/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.4.2.ufo.BOUNDED-8.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:03:53,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:03:53,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:03:53,310 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:03:53,311 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:03:53,317 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:03:53,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:03:53,325 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:03:53,329 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:03:53,338 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:03:53,339 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:03:53,341 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:03:53,342 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:03:53,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:03:53,348 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:03:53,350 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:03:53,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:03:53,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:03:53,377 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:03:53,385 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:03:53,387 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:03:53,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:03:53,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:03:53,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:03:53,403 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:03:53,404 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:03:53,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:03:53,408 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:03:53,410 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:03:53,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:03:53,411 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:03:53,412 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:03:53,415 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:03:53,416 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:03:53,417 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:03:53,417 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:03:53,418 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:03:53,418 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:03:53,419 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:03:53,420 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:03:53,421 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:03:53,429 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 23:03:53,481 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:03:53,481 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:03:53,486 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:03:53,487 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:03:53,487 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:03:53,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:03:53,488 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:03:53,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:03:53,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:03:53,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:03:53,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:03:53,490 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:03:53,490 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:03:53,490 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:03:53,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:03:53,491 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:03:53,491 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:03:53,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:03:53,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:03:53,492 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:03:53,492 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:03:53,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:03:53,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:03:53,493 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:03:53,493 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:03:53,493 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:03:53,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:03:53,494 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:03:53,494 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:03:53,494 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:03:53,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:03:53,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:03:53,980 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:03:53,982 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:03:53,982 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:03:53,983 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c [2020-10-27 23:03:54,069 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e41b1096/418bf62d18eb490595a399ba53aa2ab7/FLAG07c5e478b [2020-10-27 23:03:54,741 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:03:54,741 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c [2020-10-27 23:03:54,754 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e41b1096/418bf62d18eb490595a399ba53aa2ab7/FLAG07c5e478b [2020-10-27 23:03:55,061 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e41b1096/418bf62d18eb490595a399ba53aa2ab7 [2020-10-27 23:03:55,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:03:55,071 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:03:55,078 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:03:55,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:03:55,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:03:55,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:03:55" (1/1) ... [2020-10-27 23:03:55,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4021b417 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:03:55, skipping insertion in model container [2020-10-27 23:03:55,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:03:55" (1/1) ... [2020-10-27 23:03:55,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:03:55,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:03:55,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:03:55,391 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:03:55,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:03:55,519 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:03:55,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:03:55 WrapperNode [2020-10-27 23:03:55,521 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:03:55,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:03:55,523 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:03:55,523 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:03:55,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:03:55" (1/1) ... [2020-10-27 23:03:55,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:03:55" (1/1) ... [2020-10-27 23:03:55,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:03:55" (1/1) ... [2020-10-27 23:03:55,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:03:55" (1/1) ... [2020-10-27 23:03:55,608 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:03:55" (1/1) ... [2020-10-27 23:03:55,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:03:55" (1/1) ... [2020-10-27 23:03:55,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:03:55" (1/1) ... [2020-10-27 23:03:55,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:03:55,659 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:03:55,659 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:03:55,660 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:03:55,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:03:55" (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 23:03:55,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:03:55,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:03:55,771 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:03:55,772 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 23:03:55,772 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 23:03:55,772 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 23:03:55,772 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-27 23:03:55,772 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 23:03:55,772 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 23:03:55,773 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:03:55,773 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 23:03:55,773 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:03:55,773 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:03:55,773 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:03:55,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:03:55,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:03:55,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:03:55,774 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:03:55,774 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:03:55,775 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:03:55,775 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:03:55,775 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:03:55,775 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:03:55,775 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 23:03:55,775 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:03:55,775 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:03:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:03:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:03:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:03:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:03:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:03:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:03:55,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:03:56,830 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:03:56,830 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 23:03:56,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:03:56 BoogieIcfgContainer [2020-10-27 23:03:56,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:03:56,837 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:03:56,837 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:03:56,841 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:03:56,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:03:55" (1/3) ... [2020-10-27 23:03:56,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b9855f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:03:56, skipping insertion in model container [2020-10-27 23:03:56,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:03:55" (2/3) ... [2020-10-27 23:03:56,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b9855f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:03:56, skipping insertion in model container [2020-10-27 23:03:56,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:03:56" (3/3) ... [2020-10-27 23:03:56,846 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c [2020-10-27 23:03:56,867 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:03:56,873 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:03:56,888 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:03:56,927 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:03:56,928 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:03:56,928 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:03:56,928 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:03:56,928 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:03:56,928 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:03:56,929 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:03:56,929 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:03:56,951 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states. [2020-10-27 23:03:56,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 23:03:56,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:03:56,963 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 23:03:56,963 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:03:56,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:03:56,970 INFO L82 PathProgramCache]: Analyzing trace with hash -51277868, now seen corresponding path program 1 times [2020-10-27 23:03:56,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:03:56,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495874993] [2020-10-27 23:03:56,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:03:57,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:03:57,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:57,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:03:57,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 23:03:57,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:03:57,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 474 [2020-10-27 23:03:57,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:03:57,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:03:57,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 23:03:57,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:03:57,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 23:03:58,207 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:03:58,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:03:58,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:03:58,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:58,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:03:58,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:03:58,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:03:58,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 23:03:58,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:03:58,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:03:58,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:03:58,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:03:58,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:03:58,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:03:58,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:03:58,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:58,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:03:58,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:03:58,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:03:58,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:03:58,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:03:58,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:03:58,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:03:58,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:03:58,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:03:58,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 23:03:58,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:03:58,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:58,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:03:58,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:03:58,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:03:58,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:03:58,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:03:58,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:03:58,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:03:58,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:03:58,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:03:58,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 23:03:58,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:03:58,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:58,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:03:58,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:03:58,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:03:58,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:03:58,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:03:58,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:03:58,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:03:58,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:03:58,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:03:58,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 23:03:58,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:03:58,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:58,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:03:58,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:03:58,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:03:58,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:03:58,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:03:58,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:03:58,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:03:58,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:03:58,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:03:58,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 23:03:58,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:03:58,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:58,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:03:58,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:03:58,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:03:58,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:03:58,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:03:58,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:03:58,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:03:58,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:03:58,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:03:58,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 23:03:58,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:03:58,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:03:58,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:03:58,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:03:58,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:03:58,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:03:58,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:03:58,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:03:58,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:03:58,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:03:58,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:03:58,495 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 23:03:58,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495874993] [2020-10-27 23:03:58,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:03:58,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:03:58,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345794281] [2020-10-27 23:03:58,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:03:58,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:03:58,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:03:58,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:03:58,521 INFO L87 Difference]: Start difference. First operand 131 states. Second operand 7 states. [2020-10-27 23:03:59,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:03:59,861 INFO L93 Difference]: Finished difference Result 226 states and 331 transitions. [2020-10-27 23:03:59,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 23:03:59,863 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2020-10-27 23:03:59,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:03:59,875 INFO L225 Difference]: With dead ends: 226 [2020-10-27 23:03:59,875 INFO L226 Difference]: Without dead ends: 127 [2020-10-27 23:03:59,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:03:59,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-27 23:03:59,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 123. [2020-10-27 23:03:59,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-27 23:03:59,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 184 transitions. [2020-10-27 23:03:59,942 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 184 transitions. Word has length 57 [2020-10-27 23:03:59,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:03:59,943 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 184 transitions. [2020-10-27 23:03:59,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:03:59,943 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 184 transitions. [2020-10-27 23:03:59,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 23:03:59,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:03:59,947 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 23:03:59,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:03:59,947 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:03:59,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:03:59,948 INFO L82 PathProgramCache]: Analyzing trace with hash -2100665710, now seen corresponding path program 1 times [2020-10-27 23:03:59,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:03:59,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666239159] [2020-10-27 23:03:59,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:04:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:00,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:00,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:00,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 23:04:00,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:00,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 497 [2020-10-27 23:04:00,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:00,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:04:00,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 23:04:00,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:04:00,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:00,984 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:04:00,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:04:00,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:00,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:01,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:01,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:04:01,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:01,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 23:04:01,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:01,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:01,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:01,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:01,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:01,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:04:01,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:01,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:01,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:01,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:04:01,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:01,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 23:04:01,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:01,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:04:01,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:01,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:04:01,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:01,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 23:04:01,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:01,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:01,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:01,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:04:01,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:01,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:04:01,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:01,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:01,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:04:01,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:01,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:01,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 23:04:01,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:01,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:01,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:01,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:04:01,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:01,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:04:01,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:01,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:01,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:04:01,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:01,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:01,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 23:04:01,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:01,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:01,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:01,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:04:01,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:01,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:04:01,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:01,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:01,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:04:01,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:01,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 23:04:01,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 23:04:01,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:01,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:01,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:01,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:04:01,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:01,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:04:01,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:01,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:01,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:04:01,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:01,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 23:04:01,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 23:04:01,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:01,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:01,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:01,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:04:01,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:01,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:04:01,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:01,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:01,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:04:01,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:01,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:01,387 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 23:04:01,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666239159] [2020-10-27 23:04:01,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:04:01,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:04:01,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191696381] [2020-10-27 23:04:01,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:04:01,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:04:01,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:04:01,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:04:01,394 INFO L87 Difference]: Start difference. First operand 123 states and 184 transitions. Second operand 11 states. [2020-10-27 23:04:01,885 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 23:04:02,314 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 23:04:04,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:04:04,610 INFO L93 Difference]: Finished difference Result 228 states and 332 transitions. [2020-10-27 23:04:04,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 23:04:04,610 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-10-27 23:04:04,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:04:04,614 INFO L225 Difference]: With dead ends: 228 [2020-10-27 23:04:04,614 INFO L226 Difference]: Without dead ends: 137 [2020-10-27 23:04:04,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-27 23:04:04,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-27 23:04:04,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 123. [2020-10-27 23:04:04,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-27 23:04:04,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 160 transitions. [2020-10-27 23:04:04,640 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 160 transitions. Word has length 57 [2020-10-27 23:04:04,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:04:04,640 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 160 transitions. [2020-10-27 23:04:04,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 23:04:04,640 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 160 transitions. [2020-10-27 23:04:04,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-27 23:04:04,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:04:04,643 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 23:04:04,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:04:04,644 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:04:04,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:04:04,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1378617896, now seen corresponding path program 1 times [2020-10-27 23:04:04,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:04:04,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747037539] [2020-10-27 23:04:04,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:04:04,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:04,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:04,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:04,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:05,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:09,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:09,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 23:04:09,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 23:04:09,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 23:04:09,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:09,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:04:09,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 23:04:09,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 23:04:09,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:04:10,095 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:04:10,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:04:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:10,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:10,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:10,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:04:10,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:10,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 23:04:10,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:10,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:10,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:10,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:10,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 23:04:10,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:04:10,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:10,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:10,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:10,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 23:04:10,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:10,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 23:04:10,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:10,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:04:10,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:10,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 23:04:10,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:10,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 23:04:10,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:10,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:10,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:10,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:04:10,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:10,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:04:10,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:10,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:04:10,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:10,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:04:10,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:10,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 23:04:10,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:10,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:10,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:10,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:04:10,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:10,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:04:10,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:10,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:04:10,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:10,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:04:10,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:10,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 23:04:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:10,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:10,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:10,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:04:10,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:10,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:04:10,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:10,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:04:10,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:10,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:04:10,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:10,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 23:04:10,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:10,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:10,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:10,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:04:10,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:10,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 23:04:10,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:10,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:04:10,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:04:10,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:04:10,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:10,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 23:04:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:10,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:10,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:10,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:04:10,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:10,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:04:10,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:10,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:10,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:04:10,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:10,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:10,519 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 23:04:10,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747037539] [2020-10-27 23:04:10,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:04:10,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:04:10,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298931508] [2020-10-27 23:04:10,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:04:10,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:04:10,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:04:10,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:04:10,525 INFO L87 Difference]: Start difference. First operand 123 states and 160 transitions. Second operand 10 states. [2020-10-27 23:04:10,966 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:04:13,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:04:13,810 INFO L93 Difference]: Finished difference Result 288 states and 393 transitions. [2020-10-27 23:04:13,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 23:04:13,812 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 80 [2020-10-27 23:04:13,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:04:13,816 INFO L225 Difference]: With dead ends: 288 [2020-10-27 23:04:13,817 INFO L226 Difference]: Without dead ends: 203 [2020-10-27 23:04:13,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:04:13,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-27 23:04:13,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 193. [2020-10-27 23:04:13,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-10-27 23:04:13,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 260 transitions. [2020-10-27 23:04:13,851 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 260 transitions. Word has length 80 [2020-10-27 23:04:13,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:04:13,851 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 260 transitions. [2020-10-27 23:04:13,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:04:13,852 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 260 transitions. [2020-10-27 23:04:13,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-27 23:04:13,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:04:13,855 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 23:04:13,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:04:13,856 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:04:13,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:04:13,856 INFO L82 PathProgramCache]: Analyzing trace with hash -628088450, now seen corresponding path program 1 times [2020-10-27 23:04:13,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:04:13,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976003847] [2020-10-27 23:04:13,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:04:13,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:13,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:14,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:14,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:16,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:16,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 23:04:16,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 23:04:16,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2611 [2020-10-27 23:04:16,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:16,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:04:16,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 23:04:16,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 23:04:16,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:16,888 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:04:16,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:04:16,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:16,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:16,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:16,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:04:16,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:16,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:04:16,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:16,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:16,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:16,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:16,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:16,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:04:16,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:16,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:16,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:16,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 23:04:16,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:16,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 23:04:16,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:16,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:04:16,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:16,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 23:04:16,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:16,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 23:04:16,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:16,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:16,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:16,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:04:16,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:16,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:04:16,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:16,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:04:16,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:16,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:04:16,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:17,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 23:04:17,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:17,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:17,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:17,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:04:17,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:17,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:04:17,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:17,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:04:17,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:17,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:04:17,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:04:17,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 23:04:17,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:17,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:17,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:17,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:04:17,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:17,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:04:17,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:17,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:04:17,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:04:17,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:04:17,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:17,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 23:04:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:17,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:17,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:17,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:04:17,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:17,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:04:17,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:17,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:17,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 23:04:17,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:17,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:17,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 23:04:17,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:17,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:17,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:17,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:04:17,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:17,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:04:17,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:17,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:17,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:04:17,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:17,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:17,216 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 23:04:17,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976003847] [2020-10-27 23:04:17,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:04:17,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:04:17,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111992970] [2020-10-27 23:04:17,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:04:17,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:04:17,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:04:17,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:04:17,220 INFO L87 Difference]: Start difference. First operand 193 states and 260 transitions. Second operand 10 states. [2020-10-27 23:04:17,615 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:04:19,879 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 23:04:20,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:04:20,417 INFO L93 Difference]: Finished difference Result 491 states and 680 transitions. [2020-10-27 23:04:20,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 23:04:20,418 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 81 [2020-10-27 23:04:20,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:04:20,422 INFO L225 Difference]: With dead ends: 491 [2020-10-27 23:04:20,422 INFO L226 Difference]: Without dead ends: 336 [2020-10-27 23:04:20,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:04:20,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-10-27 23:04:20,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 321. [2020-10-27 23:04:20,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2020-10-27 23:04:20,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 440 transitions. [2020-10-27 23:04:20,488 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 440 transitions. Word has length 81 [2020-10-27 23:04:20,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:04:20,489 INFO L481 AbstractCegarLoop]: Abstraction has 321 states and 440 transitions. [2020-10-27 23:04:20,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:04:20,489 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 440 transitions. [2020-10-27 23:04:20,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 23:04:20,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:04:20,492 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 23:04:20,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:04:20,492 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:04:20,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:04:20,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1785409830, now seen corresponding path program 1 times [2020-10-27 23:04:20,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:04:20,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314797219] [2020-10-27 23:04:20,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:04:20,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:20,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:20,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:21,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:21,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 23:04:21,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 23:04:21,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1186 [2020-10-27 23:04:21,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:21,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:04:21,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 23:04:21,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 23:04:21,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:22,136 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:04:22,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:04:22,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:22,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:22,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:22,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:04:22,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:22,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:04:22,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:22,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:22,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:22,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:22,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:22,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:04:22,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:22,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:22,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:22,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 23:04:22,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:22,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 23:04:22,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:22,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:04:22,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:22,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:04:22,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:22,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 23:04:22,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:22,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:22,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:22,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:04:22,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:22,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:04:22,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:22,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:04:22,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:22,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:04:22,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:22,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 23:04:22,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:22,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:22,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:22,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:04:22,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:22,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 23:04:22,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:22,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:04:22,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:04:22,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:04:22,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:22,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 23:04:22,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:22,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:22,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:22,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:04:22,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:22,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:04:22,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:22,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:22,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 23:04:22,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:22,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:22,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 23:04:22,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:22,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:22,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:22,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:04:22,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:22,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:04:22,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:22,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:22,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 23:04:22,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:22,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:22,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 23:04:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:22,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:22,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:22,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:04:22,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:22,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:04:22,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:22,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:22,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:04:22,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:22,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:04:22,505 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 23:04:22,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314797219] [2020-10-27 23:04:22,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:04:22,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:04:22,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978882087] [2020-10-27 23:04:22,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:04:22,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:04:22,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:04:22,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:04:22,507 INFO L87 Difference]: Start difference. First operand 321 states and 440 transitions. Second operand 10 states. [2020-10-27 23:04:22,923 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:04:25,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:04:25,948 INFO L93 Difference]: Finished difference Result 859 states and 1192 transitions. [2020-10-27 23:04:25,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 23:04:25,949 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 82 [2020-10-27 23:04:25,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:04:25,953 INFO L225 Difference]: With dead ends: 859 [2020-10-27 23:04:25,953 INFO L226 Difference]: Without dead ends: 576 [2020-10-27 23:04:25,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:04:25,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2020-10-27 23:04:26,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 553. [2020-10-27 23:04:26,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2020-10-27 23:04:26,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 760 transitions. [2020-10-27 23:04:26,014 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 760 transitions. Word has length 82 [2020-10-27 23:04:26,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:04:26,014 INFO L481 AbstractCegarLoop]: Abstraction has 553 states and 760 transitions. [2020-10-27 23:04:26,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:04:26,015 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 760 transitions. [2020-10-27 23:04:26,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-27 23:04:26,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:04:26,017 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 23:04:26,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:04:26,017 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:04:26,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:04:26,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1805841370, now seen corresponding path program 1 times [2020-10-27 23:04:26,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:04:26,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287672213] [2020-10-27 23:04:26,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:04:26,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:26,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:26,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:28,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:28,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 23:04:28,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 23:04:28,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2522 [2020-10-27 23:04:28,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:28,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 23:04:28,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 23:04:28,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 23:04:28,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:28,966 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:04:28,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:04:28,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:28,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:28,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:28,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:04:28,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:28,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:04:28,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:28,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:28,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:28,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:28,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:28,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:04:28,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:28,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:29,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:29,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 23:04:29,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:29,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 23:04:29,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:29,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:04:29,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:29,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 23:04:29,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:29,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 23:04:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:29,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:29,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:29,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:04:29,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:29,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:04:29,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:29,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:04:29,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:04:29,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:04:29,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:29,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 23:04:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:29,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:29,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:29,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:04:29,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:29,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 23:04:29,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:29,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:04:29,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:04:29,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:04:29,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:29,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 23:04:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:29,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:29,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:29,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:04:29,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:29,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:04:29,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:29,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:04:29,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:04:29,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:04:29,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:29,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 23:04:29,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:29,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:29,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:29,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:04:29,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:29,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:04:29,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:29,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:04:29,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:04:29,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:04:29,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:29,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 23:04:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:29,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:29,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:29,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:04:29,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:29,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:04:29,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:29,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:04:29,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 23:04:29,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 23:04:29,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:29,658 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 23:04:29,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287672213] [2020-10-27 23:04:29,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:04:29,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-27 23:04:29,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183207278] [2020-10-27 23:04:29,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 23:04:29,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:04:29,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 23:04:29,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-27 23:04:29,664 INFO L87 Difference]: Start difference. First operand 553 states and 760 transitions. Second operand 16 states. [2020-10-27 23:04:30,154 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 23:04:30,616 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 23:04:31,048 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 23:04:31,496 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:04:32,310 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-10-27 23:04:32,804 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-10-27 23:04:33,074 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-10-27 23:04:33,360 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-10-27 23:04:34,152 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 23:04:34,856 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-10-27 23:04:35,021 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-10-27 23:04:36,233 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 23:04:36,393 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 23:04:37,502 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-10-27 23:04:37,857 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-10-27 23:04:38,097 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2020-10-27 23:04:39,450 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 23:04:39,893 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-27 23:04:40,343 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-27 23:04:43,271 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-10-27 23:04:43,635 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2020-10-27 23:04:44,975 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-10-27 23:04:45,128 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 23:04:45,490 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 23:04:45,754 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-10-27 23:04:46,009 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2020-10-27 23:04:46,533 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-10-27 23:04:46,721 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-10-27 23:04:47,177 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-27 23:04:47,408 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-10-27 23:04:51,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:04:51,317 INFO L93 Difference]: Finished difference Result 6604 states and 10034 transitions. [2020-10-27 23:04:51,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2020-10-27 23:04:51,318 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 83 [2020-10-27 23:04:51,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:04:51,367 INFO L225 Difference]: With dead ends: 6604 [2020-10-27 23:04:51,367 INFO L226 Difference]: Without dead ends: 6089 [2020-10-27 23:04:51,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2629 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=1601, Invalid=6055, Unknown=0, NotChecked=0, Total=7656 [2020-10-27 23:04:51,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6089 states. [2020-10-27 23:04:51,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6089 to 4765. [2020-10-27 23:04:51,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4765 states. [2020-10-27 23:04:51,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4765 states to 4765 states and 6676 transitions. [2020-10-27 23:04:51,895 INFO L78 Accepts]: Start accepts. Automaton has 4765 states and 6676 transitions. Word has length 83 [2020-10-27 23:04:51,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:04:51,895 INFO L481 AbstractCegarLoop]: Abstraction has 4765 states and 6676 transitions. [2020-10-27 23:04:51,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 23:04:51,895 INFO L276 IsEmpty]: Start isEmpty. Operand 4765 states and 6676 transitions. [2020-10-27 23:04:51,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-27 23:04:51,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:04:51,897 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 23:04:51,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:04:51,898 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:04:51,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:04:51,899 INFO L82 PathProgramCache]: Analyzing trace with hash -854967934, now seen corresponding path program 1 times [2020-10-27 23:04:51,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:04:51,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932597027] [2020-10-27 23:04:51,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:04:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:51,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:52,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:53,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:53,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 23:04:53,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 23:04:53,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1169 [2020-10-27 23:04:53,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:53,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 23:04:53,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-27 23:04:53,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 23:04:53,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:53,554 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:04:53,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:04:53,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:53,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:53,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:53,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:04:53,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:53,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:04:53,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:53,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:53,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:53,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:53,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:53,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:04:53,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:53,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:53,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:53,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 23:04:53,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:53,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:04:53,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:53,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:53,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:53,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:53,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:53,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 23:04:53,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:53,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:53,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:53,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:04:53,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:53,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:04:53,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:53,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:53,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:53,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:53,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:53,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 23:04:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:53,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:53,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:53,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:04:53,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:53,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:04:53,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:53,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:53,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:53,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:53,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:53,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 23:04:53,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:53,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:53,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:53,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:04:53,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:53,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:04:53,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:53,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:53,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:53,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:53,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:53,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 23:04:53,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:53,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:53,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:53,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:04:53,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:53,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:04:53,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:53,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:04:53,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:53,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:04:53,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:53,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 23:04:53,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:53,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:53,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:04:53,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:04:53,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:04:53,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:04:53,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:04:53,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:04:53,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:04:53,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 23:04:53,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:04:53,887 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 23:04:53,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932597027] [2020-10-27 23:04:53,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:04:53,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 23:04:53,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754599199] [2020-10-27 23:04:53,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 23:04:53,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:04:53,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 23:04:53,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-27 23:04:53,890 INFO L87 Difference]: Start difference. First operand 4765 states and 6676 transitions. Second operand 13 states. [2020-10-27 23:04:56,012 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 23:04:56,410 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-27 23:04:56,947 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:04:57,405 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-27 23:04:58,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:04:58,513 INFO L93 Difference]: Finished difference Result 5740 states and 8122 transitions. [2020-10-27 23:04:58,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 23:04:58,514 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 84 [2020-10-27 23:04:58,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:04:58,556 INFO L225 Difference]: With dead ends: 5740 [2020-10-27 23:04:58,556 INFO L226 Difference]: Without dead ends: 5737 [2020-10-27 23:04:58,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2020-10-27 23:04:58,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5737 states. [2020-10-27 23:04:59,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5737 to 5125. [2020-10-27 23:04:59,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5125 states. [2020-10-27 23:04:59,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5125 states to 5125 states and 7036 transitions. [2020-10-27 23:04:59,102 INFO L78 Accepts]: Start accepts. Automaton has 5125 states and 7036 transitions. Word has length 84 [2020-10-27 23:04:59,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:04:59,103 INFO L481 AbstractCegarLoop]: Abstraction has 5125 states and 7036 transitions. [2020-10-27 23:04:59,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 23:04:59,103 INFO L276 IsEmpty]: Start isEmpty. Operand 5125 states and 7036 transitions. [2020-10-27 23:04:59,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 23:04:59,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:04:59,105 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 23:04:59,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:04:59,105 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:04:59,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:04:59,106 INFO L82 PathProgramCache]: Analyzing trace with hash -771582, now seen corresponding path program 1 times [2020-10-27 23:04:59,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:04:59,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335248306] [2020-10-27 23:04:59,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:04:59,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:04:59,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:04:59,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:00,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:00,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 23:05:00,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 23:05:00,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1028 [2020-10-27 23:05:00,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:00,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:05:00,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 23:05:00,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 23:05:00,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:00,630 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:05:00,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:05:00,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:00,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:00,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:00,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:05:00,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:00,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:05:00,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:00,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:00,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:00,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:00,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:00,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:05:00,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:00,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:00,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:00,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 23:05:00,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:00,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:05:00,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:00,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:00,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:00,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 23:05:00,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:00,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 23:05:00,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:00,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:00,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:00,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:05:00,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:00,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:05:00,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:00,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:05:00,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:00,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:05:00,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:00,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 23:05:00,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:00,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:00,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:00,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:00,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:00,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:05:00,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:00,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:05:00,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:00,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 23:05:00,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:00,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 23:05:00,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:00,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:00,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:00,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:00,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:00,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:05:00,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:00,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:05:00,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:00,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 23:05:00,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:00,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 23:05:00,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:00,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:01,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:01,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:01,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:01,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:05:01,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:01,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:01,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 23:05:01,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:05:01,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:01,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 23:05:01,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:01,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:01,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:01,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:01,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:01,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:05:01,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:01,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:01,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 23:05:01,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:01,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:01,089 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 23:05:01,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335248306] [2020-10-27 23:05:01,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:05:01,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-27 23:05:01,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096626050] [2020-10-27 23:05:01,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 23:05:01,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:05:01,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 23:05:01,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-10-27 23:05:01,091 INFO L87 Difference]: Start difference. First operand 5125 states and 7036 transitions. Second operand 15 states. [2020-10-27 23:05:01,625 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-27 23:05:02,110 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-27 23:05:03,065 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-27 23:05:03,944 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-27 23:05:04,339 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-27 23:05:04,765 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-27 23:05:04,971 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-27 23:05:05,118 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-27 23:05:06,201 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-27 23:05:06,646 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-27 23:05:07,112 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 23:05:07,577 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-27 23:05:08,025 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 23:05:08,500 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 23:05:08,937 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-27 23:05:09,130 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-27 23:05:09,285 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-27 23:05:09,437 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-27 23:05:09,591 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 23:05:09,736 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-27 23:05:09,910 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 23:05:10,080 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 23:05:11,393 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-27 23:05:11,858 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 23:05:12,345 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-27 23:05:12,798 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 23:05:13,295 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-27 23:05:13,748 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-27 23:05:14,235 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-27 23:05:14,683 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-27 23:05:15,181 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-27 23:05:15,633 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-27 23:05:16,115 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-27 23:05:16,525 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-27 23:05:16,661 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-27 23:05:17,111 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-27 23:05:17,528 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-27 23:05:17,709 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-27 23:05:17,848 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 23:05:18,020 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-27 23:05:18,161 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 23:05:18,341 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-27 23:05:18,479 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 23:05:18,632 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 23:05:18,937 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 23:05:19,248 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 23:05:19,548 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 23:05:23,281 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 23:05:23,457 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 23:05:23,628 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 23:05:23,793 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 23:05:23,944 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-10-27 23:05:24,132 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 23:05:24,284 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-10-27 23:05:24,468 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 23:05:24,617 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-10-27 23:05:24,821 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 23:05:27,117 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-27 23:05:27,307 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-27 23:05:27,493 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-27 23:05:27,668 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-27 23:05:27,848 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 23:05:28,052 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 23:05:28,217 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 23:05:28,411 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 23:05:28,579 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 23:05:28,799 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 23:05:28,974 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-10-27 23:05:29,125 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 23:05:29,375 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-10-27 23:05:31,312 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-27 23:05:31,509 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-27 23:05:31,709 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-27 23:05:32,058 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 23:05:32,213 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 23:05:32,389 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 23:05:32,540 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 23:05:32,746 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 23:05:39,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:05:39,521 INFO L93 Difference]: Finished difference Result 62569 states and 89200 transitions. [2020-10-27 23:05:39,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2020-10-27 23:05:39,522 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 85 [2020-10-27 23:05:39,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:05:39,986 INFO L225 Difference]: With dead ends: 62569 [2020-10-27 23:05:39,986 INFO L226 Difference]: Without dead ends: 57482 [2020-10-27 23:05:40,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7326 ImplicationChecksByTransitivity, 23.4s TimeCoverageRelationStatistics Valid=2317, Invalid=16589, Unknown=0, NotChecked=0, Total=18906 [2020-10-27 23:05:40,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57482 states. [2020-10-27 23:05:44,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57482 to 56860. [2020-10-27 23:05:44,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56860 states. [2020-10-27 23:05:44,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56860 states to 56860 states and 74130 transitions. [2020-10-27 23:05:44,686 INFO L78 Accepts]: Start accepts. Automaton has 56860 states and 74130 transitions. Word has length 85 [2020-10-27 23:05:44,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:05:44,687 INFO L481 AbstractCegarLoop]: Abstraction has 56860 states and 74130 transitions. [2020-10-27 23:05:44,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 23:05:44,687 INFO L276 IsEmpty]: Start isEmpty. Operand 56860 states and 74130 transitions. [2020-10-27 23:05:44,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 23:05:44,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:05:44,690 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 23:05:44,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 23:05:44,691 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:05:44,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:05:44,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1770473564, now seen corresponding path program 1 times [2020-10-27 23:05:44,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:05:44,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250717237] [2020-10-27 23:05:44,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:05:44,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:44,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:44,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:45,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:45,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 23:05:45,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 23:05:45,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 525 [2020-10-27 23:05:45,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:45,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:05:45,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 23:05:45,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 23:05:45,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:45,622 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:05:45,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:05:45,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:45,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:45,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:45,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:05:45,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:45,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:05:45,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:45,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:45,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:45,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:45,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:45,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:05:45,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:45,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:45,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:45,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 23:05:45,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:45,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:05:45,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:45,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:05:45,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:05:45,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:05:45,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:45,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 23:05:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:45,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:45,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:45,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:05:45,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:45,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:05:45,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:45,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:05:45,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:05:45,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:05:45,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:45,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 23:05:45,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:45,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:45,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:45,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:45,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:45,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:05:45,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:45,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:45,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 23:05:45,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:45,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:45,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 23:05:45,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:45,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:45,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:45,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:45,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:45,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:05:45,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:45,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:45,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 23:05:45,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:45,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:45,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 23:05:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:45,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:45,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:45,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:45,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:45,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:05:45,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:45,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:45,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 23:05:45,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:45,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:45,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 23:05:45,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:05:45,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:05:45,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:05:45,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:05:45,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:05:45,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:05:45,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:05:45,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:05:45,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 23:05:45,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:05:45,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:05:45,960 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 23:05:45,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250717237] [2020-10-27 23:05:45,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:05:45,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:05:45,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940861456] [2020-10-27 23:05:45,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:05:45,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:05:45,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:05:45,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:05:45,966 INFO L87 Difference]: Start difference. First operand 56860 states and 74130 transitions. Second operand 10 states. [2020-10-27 23:05:46,378 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-27 23:05:56,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:05:56,389 INFO L93 Difference]: Finished difference Result 164643 states and 215979 transitions. [2020-10-27 23:05:56,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 23:05:56,390 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2020-10-27 23:05:56,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:05:57,236 INFO L225 Difference]: With dead ends: 164643 [2020-10-27 23:05:57,236 INFO L226 Difference]: Without dead ends: 107830 [2020-10-27 23:05:57,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:05:57,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107830 states. [2020-10-27 23:06:05,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107830 to 106678. [2020-10-27 23:06:05,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106678 states. [2020-10-27 23:06:06,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106678 states to 106678 states and 138035 transitions. [2020-10-27 23:06:06,082 INFO L78 Accepts]: Start accepts. Automaton has 106678 states and 138035 transitions. Word has length 85 [2020-10-27 23:06:06,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:06:06,083 INFO L481 AbstractCegarLoop]: Abstraction has 106678 states and 138035 transitions. [2020-10-27 23:06:06,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:06:06,083 INFO L276 IsEmpty]: Start isEmpty. Operand 106678 states and 138035 transitions. [2020-10-27 23:06:06,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-27 23:06:06,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:06:06,086 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 23:06:06,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 23:06:06,086 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:06:06,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:06:06,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1208472093, now seen corresponding path program 1 times [2020-10-27 23:06:06,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:06:06,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119546166] [2020-10-27 23:06:06,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:06:06,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:06,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:06,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:06,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 23:06:06,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:06,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-27 23:06:06,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:06,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:06:06,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 23:06:06,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 23:06:06,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:06,708 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:06:06,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:06:06,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:06,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:06,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:06,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:06:06,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:06,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:06:06,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:06,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:06:06,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:06,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:06:06,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:06,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:06:06,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:06,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:06,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:06,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 23:06:06,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:06,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:06:06,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:06,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:06:06,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:06,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 23:06:06,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:06,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 23:06:06,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:06,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:06,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:06,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:06:06,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:06,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:06:06,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:06,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:06:06,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:06:06,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:06:06,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:06,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 23:06:06,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:06,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:06,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:06,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 23:06:06,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:06,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:06:06,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:06,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:06:06,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:06,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 23:06:06,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:06,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 23:06:06,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:06,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:06,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:06,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:06:06,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:06,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:06:06,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:06,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:06:06,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:06,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 23:06:06,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:07,141 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-10-27 23:06:07,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 23:06:07,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:07,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:07,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:07,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:06:07,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:07,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:06:07,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:07,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:06:07,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:07,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 23:06:07,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:07,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 23:06:07,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:07,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:07,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:07,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:06:07,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:07,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:06:07,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:07,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:06:07,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 23:06:07,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:06:07,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:07,196 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 23:06:07,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119546166] [2020-10-27 23:06:07,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:06:07,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:06:07,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919816474] [2020-10-27 23:06:07,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:06:07,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:06:07,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:06:07,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:06:07,202 INFO L87 Difference]: Start difference. First operand 106678 states and 138035 transitions. Second operand 10 states. [2020-10-27 23:06:07,614 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 23:06:10,539 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 23:06:23,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:06:23,554 INFO L93 Difference]: Finished difference Result 302724 states and 395158 transitions. [2020-10-27 23:06:23,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:06:23,555 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 86 [2020-10-27 23:06:23,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:06:24,714 INFO L225 Difference]: With dead ends: 302724 [2020-10-27 23:06:24,714 INFO L226 Difference]: Without dead ends: 196209 [2020-10-27 23:06:24,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=160, Invalid=440, Unknown=0, NotChecked=0, Total=600 [2020-10-27 23:06:25,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196209 states. [2020-10-27 23:06:38,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196209 to 194078. [2020-10-27 23:06:38,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194078 states. [2020-10-27 23:06:39,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194078 states to 194078 states and 253123 transitions. [2020-10-27 23:06:39,256 INFO L78 Accepts]: Start accepts. Automaton has 194078 states and 253123 transitions. Word has length 86 [2020-10-27 23:06:39,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:06:39,257 INFO L481 AbstractCegarLoop]: Abstraction has 194078 states and 253123 transitions. [2020-10-27 23:06:39,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 23:06:39,257 INFO L276 IsEmpty]: Start isEmpty. Operand 194078 states and 253123 transitions. [2020-10-27 23:06:39,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-27 23:06:39,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:06:39,302 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] [2020-10-27 23:06:39,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 23:06:39,303 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:06:39,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:06:39,303 INFO L82 PathProgramCache]: Analyzing trace with hash -580994918, now seen corresponding path program 1 times [2020-10-27 23:06:39,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:06:39,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618327293] [2020-10-27 23:06:39,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:06:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:39,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:39,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:41,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:41,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-27 23:06:41,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 23:06:41,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2615 [2020-10-27 23:06:41,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:41,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 23:06:41,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 23:06:41,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-27 23:06:41,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:42,463 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-27 23:06:42,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:06:42,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:42,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:42,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:42,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:06:42,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:42,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:06:42,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:42,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:06:42,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:42,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:06:42,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:42,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:06:42,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:42,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:42,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:42,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 23:06:42,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:42,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:06:42,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:42,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:06:42,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:42,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 23:06:42,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:42,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 23:06:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:42,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:42,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:42,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:06:42,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:42,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 23:06:42,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:42,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:06:42,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:06:42,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:06:42,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:06:42,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 23:06:42,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:42,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:42,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:42,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 23:06:42,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:42,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:06:42,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:42,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:06:42,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:42,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 23:06:42,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:42,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 23:06:42,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:42,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:42,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:42,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:06:42,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:42,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:06:42,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:42,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:06:42,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:42,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 23:06:42,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:42,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 23:06:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:42,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:42,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:42,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:06:42,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:42,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:06:42,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:42,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:06:42,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:42,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 23:06:42,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:42,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 23:06:42,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:42,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:42,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:42,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:06:42,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:42,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:06:42,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:42,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:06:42,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:42,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:06:42,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:42,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 23:06:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:42,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:42,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:42,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:06:42,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:42,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 23:06:42,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:42,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:06:42,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:42,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:06:42,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:42,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 23:06:42,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:42,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:42,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:42,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:06:42,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:42,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 23:06:42,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:42,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:06:42,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:06:42,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:06:42,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:42,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 23:06:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:42,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:42,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:42,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:06:42,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:42,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:06:42,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:42,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:06:42,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:42,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:06:42,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:42,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-27 23:06:42,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:42,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:42,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:42,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:06:42,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:42,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:06:42,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:42,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:06:42,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:42,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:06:42,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:42,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 23:06:42,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:42,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:42,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:42,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:06:42,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:42,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:06:42,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:42,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:06:42,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:06:42,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:06:42,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:42,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-27 23:06:42,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:06:42,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:06:42,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:06:42,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 23:06:42,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:06:42,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:06:42,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:06:42,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:06:42,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 23:06:42,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:06:42,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:06:42,985 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 23:06:42,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618327293] [2020-10-27 23:06:42,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 23:06:42,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 23:06:42,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804758635] [2020-10-27 23:06:42,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 23:06:42,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:06:42,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 23:06:42,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-27 23:06:42,987 INFO L87 Difference]: Start difference. First operand 194078 states and 253123 transitions. Second operand 12 states. [2020-10-27 23:06:43,392 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-27 23:06:45,226 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 23:06:55,651 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-27 23:07:07,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:07:07,136 INFO L93 Difference]: Finished difference Result 445531 states and 581764 transitions. [2020-10-27 23:07:07,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 23:07:07,137 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 130 [2020-10-27 23:07:07,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:07:08,222 INFO L225 Difference]: With dead ends: 445531 [2020-10-27 23:07:08,222 INFO L226 Difference]: Without dead ends: 286504 [2020-10-27 23:07:08,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=266, Invalid=790, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 23:07:09,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286504 states. [2020-10-27 23:07:28,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286504 to 283310. [2020-10-27 23:07:28,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283310 states.