/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/eca-rers2012/Problem05_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 16:20:45,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 16:20:45,416 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 16:20:45,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 16:20:45,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 16:20:45,460 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 16:20:45,462 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 16:20:45,465 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 16:20:45,467 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 16:20:45,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 16:20:45,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 16:20:45,471 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 16:20:45,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 16:20:45,473 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 16:20:45,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 16:20:45,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 16:20:45,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 16:20:45,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 16:20:45,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 16:20:45,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 16:20:45,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 16:20:45,486 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 16:20:45,488 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 16:20:45,489 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 16:20:45,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 16:20:45,506 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 16:20:45,506 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 16:20:45,507 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 16:20:45,508 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 16:20:45,509 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 16:20:45,510 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 16:20:45,511 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 16:20:45,512 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 16:20:45,512 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 16:20:45,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 16:20:45,514 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 16:20:45,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 16:20:45,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 16:20:45,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 16:20:45,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 16:20:45,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 16:20:45,518 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 16:20:45,547 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 16:20:45,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 16:20:45,549 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 16:20:45,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 16:20:45,549 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 16:20:45,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 16:20:45,550 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 16:20:45,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 16:20:45,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 16:20:45,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 16:20:45,551 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 16:20:45,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 16:20:45,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 16:20:45,551 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 16:20:45,552 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 16:20:45,552 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 16:20:45,552 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 16:20:45,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 16:20:45,553 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 16:20:45,553 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 16:20:45,553 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 16:20:45,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 16:20:45,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 16:20:45,554 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 16:20:45,554 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 16:20:45,554 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 16:20:45,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 16:20:45,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 16:20:45,555 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 16:20:45,555 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 16:20:45,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 16:20:46,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 16:20:46,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 16:20:46,015 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 16:20:46,016 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 16:20:46,017 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label52.c [2020-10-27 16:20:46,104 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c363b07b8/4bc0e38ceee54fb3a7c5e7f7e1727990/FLAG06961e5d4 [2020-10-27 16:20:47,454 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 16:20:47,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label52.c [2020-10-27 16:20:47,513 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c363b07b8/4bc0e38ceee54fb3a7c5e7f7e1727990/FLAG06961e5d4 [2020-10-27 16:20:47,657 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c363b07b8/4bc0e38ceee54fb3a7c5e7f7e1727990 [2020-10-27 16:20:47,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 16:20:47,671 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 16:20:47,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 16:20:47,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 16:20:47,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 16:20:47,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:20:47" (1/1) ... [2020-10-27 16:20:47,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b05068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:20:47, skipping insertion in model container [2020-10-27 16:20:47,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:20:47" (1/1) ... [2020-10-27 16:20:47,693 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 16:20:47,914 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 16:20:50,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:20:50,476 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 16:20:51,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:20:51,881 INFO L208 MainTranslator]: Completed translation [2020-10-27 16:20:51,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:20:51 WrapperNode [2020-10-27 16:20:51,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 16:20:51,884 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 16:20:51,884 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 16:20:51,884 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 16:20:51,900 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:20:51" (1/1) ... [2020-10-27 16:20:51,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:20:51" (1/1) ... [2020-10-27 16:20:52,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:20:51" (1/1) ... [2020-10-27 16:20:52,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:20:51" (1/1) ... [2020-10-27 16:20:52,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:20:51" (1/1) ... [2020-10-27 16:20:52,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:20:51" (1/1) ... [2020-10-27 16:20:52,605 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:20:51" (1/1) ... [2020-10-27 16:20:52,703 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 16:20:52,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 16:20:52,705 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 16:20:52,705 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 16:20:52,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:20:51" (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 16:20:52,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 16:20:52,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 16:20:52,883 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 16:20:52,883 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 16:20:52,883 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 16:20:52,883 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 16:20:52,883 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 16:20:52,883 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-27 16:20:52,883 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-27 16:20:52,884 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-27 16:20:52,884 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-27 16:20:52,884 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 16:20:52,884 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 16:20:52,884 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 16:20:52,884 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 16:20:52,885 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 16:20:52,885 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-27 16:20:52,885 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-27 16:20:52,885 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-27 16:20:52,885 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-27 16:20:52,885 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 16:20:52,886 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 16:20:52,886 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 16:20:52,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 16:20:52,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 16:20:52,886 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 16:20:52,886 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 16:20:52,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 16:20:52,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 16:20:52,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 16:20:52,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 16:20:52,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 16:20:52,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 16:21:02,759 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 16:21:02,759 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 16:21:02,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:21:02 BoogieIcfgContainer [2020-10-27 16:21:02,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 16:21:02,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 16:21:02,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 16:21:02,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 16:21:02,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:20:47" (1/3) ... [2020-10-27 16:21:02,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ba089e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:21:02, skipping insertion in model container [2020-10-27 16:21:02,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:20:51" (2/3) ... [2020-10-27 16:21:02,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ba089e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:21:02, skipping insertion in model container [2020-10-27 16:21:02,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:21:02" (3/3) ... [2020-10-27 16:21:02,777 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label52.c [2020-10-27 16:21:02,788 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 16:21:02,795 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 16:21:02,808 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 16:21:02,846 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 16:21:02,846 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 16:21:02,846 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 16:21:02,846 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 16:21:02,846 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 16:21:02,847 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 16:21:02,847 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 16:21:02,847 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 16:21:02,896 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-27 16:21:03,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1700 [2020-10-27 16:21:03,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:21:03,030 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:21:03,030 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:21:03,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:21:03,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1237586305, now seen corresponding path program 1 times [2020-10-27 16:21:03,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:21:03,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168083254] [2020-10-27 16:21:03,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:21:04,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:21:04,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:21:09,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:21:09,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1723 [2020-10-27 16:21:09,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:21:09,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5235 [2020-10-27 16:21:09,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:21:09,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 16:21:09,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 16:21:09,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1714 [2020-10-27 16:21:09,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 16:21:11,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:21:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:21:11,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:21:11,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:21:11,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:21:11,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:21:11,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 16:21:11,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:21:11,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:21:11,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:21:11,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:21:11,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 16:21:14,964 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 16:21:14,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [168083254] [2020-10-27 16:21:14,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 16:21:14,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 16:21:14,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063533805] [2020-10-27 16:21:14,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:21:14,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:21:15,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:21:15,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:21:15,005 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 5 states. [2020-10-27 16:21:52,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:21:52,994 INFO L93 Difference]: Finished difference Result 8284 states and 15705 transitions. [2020-10-27 16:21:52,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 16:21:52,997 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1699 [2020-10-27 16:21:53,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:21:53,091 INFO L225 Difference]: With dead ends: 8284 [2020-10-27 16:21:53,091 INFO L226 Difference]: Without dead ends: 5990 [2020-10-27 16:21:53,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:21:53,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5990 states. [2020-10-27 16:21:53,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5990 to 5834. [2020-10-27 16:21:53,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5834 states. [2020-10-27 16:21:53,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5834 states to 5834 states and 10150 transitions. [2020-10-27 16:21:53,403 INFO L78 Accepts]: Start accepts. Automaton has 5834 states and 10150 transitions. Word has length 1699 [2020-10-27 16:21:53,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:21:53,411 INFO L481 AbstractCegarLoop]: Abstraction has 5834 states and 10150 transitions. [2020-10-27 16:21:53,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:21:53,412 INFO L276 IsEmpty]: Start isEmpty. Operand 5834 states and 10150 transitions. [2020-10-27 16:21:53,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1733 [2020-10-27 16:21:53,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:21:53,736 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:21:53,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 16:21:53,737 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:21:53,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:21:53,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1908555200, now seen corresponding path program 1 times [2020-10-27 16:21:53,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:21:53,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081824822] [2020-10-27 16:21:53,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:21:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:21:53,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:21:54,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:21:58,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:21:58,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1760 [2020-10-27 16:21:58,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:21:58,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-27 16:21:58,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:21:58,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:21:58,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 16:21:58,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 16:21:58,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 16:22:00,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:22:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:22:00,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:22:00,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:22:00,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:22:00,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:22:00,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 16:22:00,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:22:00,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:22:00,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:22:00,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:22:00,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 16:22:00,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:22:00,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:22:00,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:22:00,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:22:00,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 16:22:00,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:22:00,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 16:22:00,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:22:00,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:22:00,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:22:00,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 16:22:00,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 16:22:00,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 16:22:00,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:22:00,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:22:00,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:22:00,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 16:22:00,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:22:00,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 16:22:00,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:22:00,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:22:00,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:22:00,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 16:22:00,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:22:01,320 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 16:22:01,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081824822] [2020-10-27 16:22:01,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:22:01,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 16:22:01,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270728665] [2020-10-27 16:22:01,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 16:22:01,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:22:01,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 16:22:01,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:22:01,328 INFO L87 Difference]: Start difference. First operand 5834 states and 10150 transitions. Second operand 7 states. [2020-10-27 16:22:47,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:22:47,500 INFO L93 Difference]: Finished difference Result 22591 states and 40498 transitions. [2020-10-27 16:22:47,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 16:22:47,501 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1732 [2020-10-27 16:22:47,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:22:47,599 INFO L225 Difference]: With dead ends: 22591 [2020-10-27 16:22:47,600 INFO L226 Difference]: Without dead ends: 16763 [2020-10-27 16:22:47,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 16:22:47,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16763 states. [2020-10-27 16:22:48,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16763 to 16746. [2020-10-27 16:22:48,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16746 states. [2020-10-27 16:22:48,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16746 states to 16746 states and 24639 transitions. [2020-10-27 16:22:48,101 INFO L78 Accepts]: Start accepts. Automaton has 16746 states and 24639 transitions. Word has length 1732 [2020-10-27 16:22:48,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:22:48,102 INFO L481 AbstractCegarLoop]: Abstraction has 16746 states and 24639 transitions. [2020-10-27 16:22:48,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 16:22:48,102 INFO L276 IsEmpty]: Start isEmpty. Operand 16746 states and 24639 transitions. [2020-10-27 16:22:48,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1732 [2020-10-27 16:22:48,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:22:48,195 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:22:48,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 16:22:48,196 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:22:48,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:22:48,199 INFO L82 PathProgramCache]: Analyzing trace with hash 609493691, now seen corresponding path program 1 times [2020-10-27 16:22:48,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:22:48,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097860136] [2020-10-27 16:22:48,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:22:48,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:22:48,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:22:49,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:22:53,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:22:53,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1757 [2020-10-27 16:22:53,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:22:53,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5328 [2020-10-27 16:22:53,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:22:53,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 16:22:53,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 16:22:53,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1711 [2020-10-27 16:22:53,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:22:55,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:22:55,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:22:55,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:22:55,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:22:55,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:22:55,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:22:55,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 16:22:55,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:22:55,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:22:55,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:22:55,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:22:55,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:22:55,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:22:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:22:55,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:22:55,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:22:55,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 16:22:55,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:22:55,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 16:22:55,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:22:55,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:22:55,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:22:55,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 16:22:55,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:22:57,835 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:22:57,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097860136] [2020-10-27 16:22:57,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:22:57,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 16:22:57,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558512080] [2020-10-27 16:22:57,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:22:57,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:22:57,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:22:57,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:22:57,839 INFO L87 Difference]: Start difference. First operand 16746 states and 24639 transitions. Second operand 5 states. [2020-10-27 16:23:26,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:23:26,281 INFO L93 Difference]: Finished difference Result 49527 states and 75502 transitions. [2020-10-27 16:23:26,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:23:26,287 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1731 [2020-10-27 16:23:26,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:23:26,451 INFO L225 Difference]: With dead ends: 49527 [2020-10-27 16:23:26,452 INFO L226 Difference]: Without dead ends: 32787 [2020-10-27 16:23:26,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:23:26,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32787 states. [2020-10-27 16:23:27,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32787 to 32779. [2020-10-27 16:23:27,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32779 states. [2020-10-27 16:23:27,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32779 states to 32779 states and 44940 transitions. [2020-10-27 16:23:27,668 INFO L78 Accepts]: Start accepts. Automaton has 32779 states and 44940 transitions. Word has length 1731 [2020-10-27 16:23:27,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:23:27,678 INFO L481 AbstractCegarLoop]: Abstraction has 32779 states and 44940 transitions. [2020-10-27 16:23:27,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:23:27,679 INFO L276 IsEmpty]: Start isEmpty. Operand 32779 states and 44940 transitions. [2020-10-27 16:23:27,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1768 [2020-10-27 16:23:27,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:23:27,868 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:23:27,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 16:23:27,868 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:23:27,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:23:27,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1048773910, now seen corresponding path program 1 times [2020-10-27 16:23:27,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:23:27,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194851978] [2020-10-27 16:23:27,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:23:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:23:28,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:23:28,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:23:28,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:23:33,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:23:33,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1795 [2020-10-27 16:23:33,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:23:33,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5160 [2020-10-27 16:23:33,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:23:33,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 16:23:33,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 16:23:33,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1303 [2020-10-27 16:23:33,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:23:39,335 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 35 [2020-10-27 16:23:39,520 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 35 [2020-10-27 16:23:39,708 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 35 [2020-10-27 16:23:39,910 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 35 [2020-10-27 16:23:40,131 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 36 [2020-10-27 16:23:40,431 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 37 [2020-10-27 16:23:40,631 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 33 [2020-10-27 16:23:40,795 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2020-10-27 16:23:40,976 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2020-10-27 16:23:41,152 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 39 [2020-10-27 16:23:41,351 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 39 [2020-10-27 16:23:41,540 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 36 [2020-10-27 16:23:41,969 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2020-10-27 16:23:42,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:23:42,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:23:42,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:23:42,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:23:42,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:23:42,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:23:42,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 16:23:42,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:23:42,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:23:42,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:23:42,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:23:42,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:23:42,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:23:42,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:23:42,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:23:42,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:23:42,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 16:23:42,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:23:42,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 16:23:42,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:23:42,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:23:42,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:23:42,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:23:42,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:23:42,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 16:23:42,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:23:42,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:23:42,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:23:42,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 16:23:42,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:23:42,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 16:23:42,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:23:42,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:23:42,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:23:42,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-27 16:23:42,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:24:09,566 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 16:24:09,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194851978] [2020-10-27 16:24:09,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:24:09,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 16:24:09,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519641488] [2020-10-27 16:24:09,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 16:24:09,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:24:09,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 16:24:09,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2020-10-27 16:24:09,572 INFO L87 Difference]: Start difference. First operand 32779 states and 44940 transitions. Second operand 23 states. [2020-10-27 16:24:12,465 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-27 16:24:12,731 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-27 16:24:26,359 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-27 16:24:26,609 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-27 16:24:27,718 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 106