/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label23.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 21:16:46,437 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 21:16:46,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 21:16:46,497 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 21:16:46,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 21:16:46,506 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 21:16:46,509 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 21:16:46,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 21:16:46,518 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 21:16:46,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 21:16:46,522 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 21:16:46,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 21:16:46,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 21:16:46,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 21:16:46,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 21:16:46,528 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 21:16:46,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 21:16:46,530 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 21:16:46,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 21:16:46,535 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 21:16:46,537 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 21:16:46,539 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 21:16:46,540 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 21:16:46,541 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 21:16:46,545 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 21:16:46,545 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 21:16:46,545 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 21:16:46,547 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 21:16:46,547 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 21:16:46,548 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 21:16:46,549 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 21:16:46,550 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 21:16:46,551 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 21:16:46,552 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 21:16:46,553 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 21:16:46,553 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 21:16:46,554 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 21:16:46,554 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 21:16:46,555 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 21:16:46,556 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 21:16:46,557 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 21:16:46,558 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 [2020-10-26 21:16:46,597 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 21:16:46,598 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 21:16:46,599 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 21:16:46,600 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 21:16:46,600 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 21:16:46,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 21:16:46,600 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 21:16:46,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 21:16:46,601 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 21:16:46,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 21:16:46,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 21:16:46,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 21:16:46,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 21:16:46,602 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 21:16:46,602 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 21:16:46,602 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 21:16:46,602 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 21:16:46,603 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 21:16:46,603 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 21:16:46,603 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 21:16:46,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 21:16:46,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 21:16:46,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 21:16:46,604 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 21:16:46,604 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 21:16:46,604 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 21:16:46,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 21:16:46,605 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 21:16:46,605 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 21:16:46,605 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 21:16:46,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 21:16:47,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 21:16:47,007 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 21:16:47,008 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 21:16:47,009 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 21:16:47,010 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label23.c [2020-10-26 21:16:47,100 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67eebc936/23eae0950b944efea619cd66f8b323c5/FLAGcca5c0ff7 [2020-10-26 21:16:48,378 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 21:16:48,379 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label23.c [2020-10-26 21:16:48,427 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67eebc936/23eae0950b944efea619cd66f8b323c5/FLAGcca5c0ff7 [2020-10-26 21:16:48,609 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67eebc936/23eae0950b944efea619cd66f8b323c5 [2020-10-26 21:16:48,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 21:16:48,621 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 21:16:48,625 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 21:16:48,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 21:16:48,629 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 21:16:48,631 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:16:48" (1/1) ... [2020-10-26 21:16:48,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c15941e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:16:48, skipping insertion in model container [2020-10-26 21:16:48,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:16:48" (1/1) ... [2020-10-26 21:16:48,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 21:16:48,922 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 21:16:51,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:16:51,158 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 21:16:52,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:16:52,689 INFO L208 MainTranslator]: Completed translation [2020-10-26 21:16:52,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:16:52 WrapperNode [2020-10-26 21:16:52,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 21:16:52,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 21:16:52,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 21:16:52,691 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 21:16:52,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:16:52" (1/1) ... [2020-10-26 21:16:52,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:16:52" (1/1) ... [2020-10-26 21:16:52,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:16:52" (1/1) ... [2020-10-26 21:16:52,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:16:52" (1/1) ... [2020-10-26 21:16:53,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:16:52" (1/1) ... [2020-10-26 21:16:53,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:16:52" (1/1) ... [2020-10-26 21:16:53,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:16:52" (1/1) ... [2020-10-26 21:16:53,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 21:16:53,390 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 21:16:53,393 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 21:16:53,393 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 21:16:53,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:16:52" (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 [2020-10-26 21:16:53,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 21:16:53,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 21:16:53,497 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 21:16:53,497 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 21:16:53,497 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 21:16:53,497 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 21:16:53,498 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 21:16:53,498 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-26 21:16:53,498 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-26 21:16:53,498 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-26 21:16:53,499 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-26 21:16:53,499 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 21:16:53,499 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 21:16:53,499 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 21:16:53,500 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 21:16:53,501 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 21:16:53,501 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-26 21:16:53,501 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-26 21:16:53,501 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-26 21:16:53,501 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-26 21:16:53,502 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 21:16:53,502 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 21:16:53,502 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 21:16:53,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 21:16:53,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 21:16:53,503 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 21:16:53,503 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 21:16:53,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 21:16:53,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 21:16:53,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 21:16:53,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 21:16:53,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 21:16:53,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 21:17:03,501 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 21:17:03,501 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 21:17:03,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:17:03 BoogieIcfgContainer [2020-10-26 21:17:03,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 21:17:03,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 21:17:03,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 21:17:03,517 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 21:17:03,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:16:48" (1/3) ... [2020-10-26 21:17:03,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67da2744 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:17:03, skipping insertion in model container [2020-10-26 21:17:03,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:16:52" (2/3) ... [2020-10-26 21:17:03,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67da2744 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:17:03, skipping insertion in model container [2020-10-26 21:17:03,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:17:03" (3/3) ... [2020-10-26 21:17:03,521 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label23.c [2020-10-26 21:17:03,534 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 21:17:03,542 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 21:17:03,556 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 21:17:03,614 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 21:17:03,614 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 21:17:03,614 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 21:17:03,615 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 21:17:03,615 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 21:17:03,615 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 21:17:03,615 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 21:17:03,615 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 21:17:03,681 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-26 21:17:03,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1691 [2020-10-26 21:17:03,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:17:03,832 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:17:03,832 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:17:03,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:17:03,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1739260591, now seen corresponding path program 1 times [2020-10-26 21:17:03,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:17:03,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195332032] [2020-10-26 21:17:03,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:17:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:17:05,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:17:10,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:17:10,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1714 [2020-10-26 21:17:10,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:17:10,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5091 [2020-10-26 21:17:10,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:17:10,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-26 21:17:10,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:17:10,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1705 [2020-10-26 21:17:10,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-26 21:17:12,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:17:12,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:17:12,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:17:12,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:17:12,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:17:12,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:17:12,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 21:17:12,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:17:12,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:17:12,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:17:12,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:17:12,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:17:15,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:17:15,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195332032] [2020-10-26 21:17:15,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:17:15,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 21:17:15,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890949472] [2020-10-26 21:17:15,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 21:17:15,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:17:15,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 21:17:15,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 21:17:15,189 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 4 states. [2020-10-26 21:17:38,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:17:38,190 INFO L93 Difference]: Finished difference Result 6316 states and 11857 transitions. [2020-10-26 21:17:38,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 21:17:38,192 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1690 [2020-10-26 21:17:38,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:17:38,245 INFO L225 Difference]: With dead ends: 6316 [2020-10-26 21:17:38,246 INFO L226 Difference]: Without dead ends: 4026 [2020-10-26 21:17:38,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 21:17:38,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4026 states. [2020-10-26 21:17:38,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4026 to 3997. [2020-10-26 21:17:38,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3997 states. [2020-10-26 21:17:38,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3997 states to 3997 states and 6428 transitions. [2020-10-26 21:17:38,515 INFO L78 Accepts]: Start accepts. Automaton has 3997 states and 6428 transitions. Word has length 1690 [2020-10-26 21:17:38,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:17:38,521 INFO L481 AbstractCegarLoop]: Abstraction has 3997 states and 6428 transitions. [2020-10-26 21:17:38,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 21:17:38,522 INFO L276 IsEmpty]: Start isEmpty. Operand 3997 states and 6428 transitions. [2020-10-26 21:17:38,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1700 [2020-10-26 21:17:38,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:17:38,666 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:17:38,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 21:17:38,667 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:17:38,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:17:38,669 INFO L82 PathProgramCache]: Analyzing trace with hash -641337941, now seen corresponding path program 1 times [2020-10-26 21:17:38,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:17:38,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [456007011] [2020-10-26 21:17:38,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:17:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:17:38,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:17:41,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:17:43,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:17:43,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1725 [2020-10-26 21:17:43,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:17:43,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5144 [2020-10-26 21:17:43,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:17:43,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:17:43,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:17:43,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-26 21:17:43,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 21:17:45,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:17:45,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:17:45,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:17:45,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:17:45,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:17:45,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:17:45,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 21:17:45,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:17:45,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:17:45,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:17:45,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:17:45,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:17:45,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:17:45,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:17:45,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:17:45,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:17:45,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 21:17:45,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:17:45,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 21:17:45,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:17:45,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:17:45,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:17:45,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 21:17:45,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:17:46,413 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:17:46,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [456007011] [2020-10-26 21:17:46,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:17:46,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:17:46,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613013331] [2020-10-26 21:17:46,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:17:46,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:17:46,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:17:46,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:17:46,419 INFO L87 Difference]: Start difference. First operand 3997 states and 6428 transitions. Second operand 7 states. [2020-10-26 21:18:18,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:18:18,413 INFO L93 Difference]: Finished difference Result 11938 states and 19455 transitions. [2020-10-26 21:18:18,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 21:18:18,421 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1699 [2020-10-26 21:18:18,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:18:18,465 INFO L225 Difference]: With dead ends: 11938 [2020-10-26 21:18:18,466 INFO L226 Difference]: Without dead ends: 7947 [2020-10-26 21:18:18,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:18:18,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7947 states. [2020-10-26 21:18:18,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7947 to 7710. [2020-10-26 21:18:18,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7710 states. [2020-10-26 21:18:18,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7710 states to 7710 states and 11168 transitions. [2020-10-26 21:18:18,720 INFO L78 Accepts]: Start accepts. Automaton has 7710 states and 11168 transitions. Word has length 1699 [2020-10-26 21:18:18,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:18:18,721 INFO L481 AbstractCegarLoop]: Abstraction has 7710 states and 11168 transitions. [2020-10-26 21:18:18,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:18:18,721 INFO L276 IsEmpty]: Start isEmpty. Operand 7710 states and 11168 transitions. [2020-10-26 21:18:18,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1702 [2020-10-26 21:18:18,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:18:18,770 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:18:18,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 21:18:18,770 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:18:18,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:18:18,771 INFO L82 PathProgramCache]: Analyzing trace with hash 197611943, now seen corresponding path program 1 times [2020-10-26 21:18:18,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:18:18,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26609904] [2020-10-26 21:18:18,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:18:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:18:19,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:18:19,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:18:24,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:18:24,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1727 [2020-10-26 21:18:24,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:18:24,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5267 [2020-10-26 21:18:24,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:18:24,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:18:24,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:18:24,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-26 21:18:24,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:18:24,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:18:24,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:18:24,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:18:25,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:18:25,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:18:25,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:18:25,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 21:18:25,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:18:25,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:18:25,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:18:25,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:18:25,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:18:25,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:18:25,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:18:25,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:18:25,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:18:25,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 21:18:25,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:18:25,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 21:18:25,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:18:25,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:18:25,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:18:25,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 21:18:25,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:18:26,418 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:18:26,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26609904] [2020-10-26 21:18:26,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:18:26,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:18:26,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329375239] [2020-10-26 21:18:26,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:18:26,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:18:26,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:18:26,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:18:26,426 INFO L87 Difference]: Start difference. First operand 7710 states and 11168 transitions. Second operand 7 states. [2020-10-26 21:18:57,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:18:57,638 INFO L93 Difference]: Finished difference Result 23283 states and 35015 transitions. [2020-10-26 21:18:57,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 21:18:57,639 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1701 [2020-10-26 21:18:57,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:18:57,722 INFO L225 Difference]: With dead ends: 23283 [2020-10-26 21:18:57,722 INFO L226 Difference]: Without dead ends: 15579 [2020-10-26 21:18:57,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 21:18:57,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15579 states. [2020-10-26 21:18:58,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15579 to 15226. [2020-10-26 21:18:58,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15226 states. [2020-10-26 21:18:58,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15226 states to 15226 states and 19809 transitions. [2020-10-26 21:18:58,215 INFO L78 Accepts]: Start accepts. Automaton has 15226 states and 19809 transitions. Word has length 1701 [2020-10-26 21:18:58,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:18:58,220 INFO L481 AbstractCegarLoop]: Abstraction has 15226 states and 19809 transitions. [2020-10-26 21:18:58,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:18:58,220 INFO L276 IsEmpty]: Start isEmpty. Operand 15226 states and 19809 transitions. [2020-10-26 21:18:58,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1713 [2020-10-26 21:18:58,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:18:58,371 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:18:58,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 21:18:58,371 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:18:58,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:18:58,373 INFO L82 PathProgramCache]: Analyzing trace with hash 184292848, now seen corresponding path program 1 times [2020-10-26 21:18:58,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:18:58,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361723678] [2020-10-26 21:18:58,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:18:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:18:58,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:18:59,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:18:59,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:19:03,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:19:03,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1738 [2020-10-26 21:19:03,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:19:03,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5181 [2020-10-26 21:19:03,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:19:03,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:19:03,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:19:03,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-26 21:19:03,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:19:04,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:19:04,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:19:04,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:19:04,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:19:04,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:19:04,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:19:04,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 21:19:04,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:19:04,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:19:04,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:19:04,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:19:04,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:19:04,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:19:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:19:04,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:19:04,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:19:04,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-26 21:19:04,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:19:04,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 21:19:04,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:19:04,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:19:04,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:19:04,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-26 21:19:04,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:19:05,898 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:19:05,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361723678] [2020-10-26 21:19:05,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:19:05,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:19:05,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689832220] [2020-10-26 21:19:05,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:19:05,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:19:05,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:19:05,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:19:05,902 INFO L87 Difference]: Start difference. First operand 15226 states and 19809 transitions. Second operand 7 states. [2020-10-26 21:19:34,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:19:34,955 INFO L93 Difference]: Finished difference Result 38376 states and 49628 transitions. [2020-10-26 21:19:34,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 21:19:34,956 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1712 [2020-10-26 21:19:34,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:19:35,029 INFO L225 Difference]: With dead ends: 38376 [2020-10-26 21:19:35,029 INFO L226 Difference]: Without dead ends: 23156 [2020-10-26 21:19:35,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:19:35,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23156 states. [2020-10-26 21:19:35,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23156 to 22849. [2020-10-26 21:19:35,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22849 states. [2020-10-26 21:19:35,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22849 states to 22849 states and 28318 transitions. [2020-10-26 21:19:35,597 INFO L78 Accepts]: Start accepts. Automaton has 22849 states and 28318 transitions. Word has length 1712 [2020-10-26 21:19:35,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:19:35,597 INFO L481 AbstractCegarLoop]: Abstraction has 22849 states and 28318 transitions. [2020-10-26 21:19:35,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:19:35,597 INFO L276 IsEmpty]: Start isEmpty. Operand 22849 states and 28318 transitions. [2020-10-26 21:19:35,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1826 [2020-10-26 21:19:35,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:19:35,690 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:19:35,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 21:19:35,691 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:19:35,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:19:35,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1468392010, now seen corresponding path program 1 times [2020-10-26 21:19:35,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:19:35,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989039967] [2020-10-26 21:19:35,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:19:36,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:19:36,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:19:37,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:19:37,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:19:41,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:19:41,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1853 [2020-10-26 21:19:41,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:19:41,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5126 [2020-10-26 21:19:41,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:19:41,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:19:41,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-26 21:19:41,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-26 21:19:41,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:19:41,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:19:41,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:19:41,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:19:41,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:19:41,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:19:41,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:19:41,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 21:19:41,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:19:41,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:19:41,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:19:41,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:19:41,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:19:41,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:19:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:19:41,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:19:42,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:19:42,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-26 21:19:42,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:19:42,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-26 21:19:42,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:19:42,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:19:42,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:19:42,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-26 21:19:42,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:19:42,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-26 21:19:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:19:42,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:19:42,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:19:42,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-26 21:19:42,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:19:42,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 21:19:42,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:19:42,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:19:42,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:19:42,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-26 21:19:42,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:19:43,997 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 21:19:43,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989039967] [2020-10-26 21:19:43,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:19:43,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:19:44,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463749523] [2020-10-26 21:19:44,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:19:44,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:19:44,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:19:44,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:19:44,003 INFO L87 Difference]: Start difference. First operand 22849 states and 28318 transitions. Second operand 7 states. [2020-10-26 21:20:18,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:20:18,354 INFO L93 Difference]: Finished difference Result 53110 states and 69784 transitions. [2020-10-26 21:20:18,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 21:20:18,356 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1825 [2020-10-26 21:20:18,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:20:18,471 INFO L225 Difference]: With dead ends: 53110 [2020-10-26 21:20:18,472 INFO L226 Difference]: Without dead ends: 31997 [2020-10-26 21:20:18,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:20:18,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31997 states. [2020-10-26 21:20:19,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31997 to 31243. [2020-10-26 21:20:19,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31243 states. [2020-10-26 21:20:19,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31243 states to 31243 states and 39674 transitions. [2020-10-26 21:20:19,309 INFO L78 Accepts]: Start accepts. Automaton has 31243 states and 39674 transitions. Word has length 1825 [2020-10-26 21:20:19,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:20:19,310 INFO L481 AbstractCegarLoop]: Abstraction has 31243 states and 39674 transitions. [2020-10-26 21:20:19,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:20:19,310 INFO L276 IsEmpty]: Start isEmpty. Operand 31243 states and 39674 transitions. [2020-10-26 21:20:19,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1854 [2020-10-26 21:20:19,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:20:19,405 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:20:19,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 21:20:19,405 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:20:19,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:20:19,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1579396604, now seen corresponding path program 1 times [2020-10-26 21:20:19,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:20:19,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174358653] [2020-10-26 21:20:19,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:20:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:20:19,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:20:20,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:20:21,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:20:24,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:20:24,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1883 [2020-10-26 21:20:24,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:20:24,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-26 21:20:24,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:20:24,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 21:20:24,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:20:24,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-26 21:20:24,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0