/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:22:52,456 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:22:52,460 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:22:52,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:22:52,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:22:52,509 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:22:52,511 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:22:52,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:22:52,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:22:52,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:22:52,518 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:22:52,520 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:22:52,520 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:22:52,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:22:52,523 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:22:52,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:22:52,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:22:52,527 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:22:52,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:22:52,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:22:52,553 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:22:52,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:22:52,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:22:52,565 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:22:52,591 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:22:52,592 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:22:52,593 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:22:52,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:22:52,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:22:52,602 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:22:52,603 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:22:52,604 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:22:52,607 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:22:52,608 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:22:52,609 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:22:52,610 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:22:52,611 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:22:52,611 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:22:52,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:22:52,612 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:22:52,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:22:52,617 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 [2020-10-29 05:22:52,642 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:22:52,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:22:52,644 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:22:52,644 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:22:52,644 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:22:52,645 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:22:52,645 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:22:52,645 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:22:52,645 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:22:52,645 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:22:52,646 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:22:52,646 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:22:52,646 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:22:52,646 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:22:52,646 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:22:52,646 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:22:52,647 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:22:52,647 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:22:52,647 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:22:52,647 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:22:52,647 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:22:52,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:22:52,648 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:22:52,648 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:22:52,648 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:22:52,648 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:22:52,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:22:52,649 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:22:52,649 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:22:52,649 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:22:53,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:22:53,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:22:53,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:22:53,062 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:22:53,063 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:22:53,064 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label20.c [2020-10-29 05:22:53,144 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b16c1996e/94b14fb040d3467cb08404d91b79f830/FLAG87f77dd96 [2020-10-29 05:22:54,345 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:22:54,346 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label20.c [2020-10-29 05:22:54,404 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b16c1996e/94b14fb040d3467cb08404d91b79f830/FLAG87f77dd96 [2020-10-29 05:22:54,677 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b16c1996e/94b14fb040d3467cb08404d91b79f830 [2020-10-29 05:22:54,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:22:54,688 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:22:54,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:22:54,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:22:54,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:22:54,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:22:54" (1/1) ... [2020-10-29 05:22:54,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42ebd6dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:54, skipping insertion in model container [2020-10-29 05:22:54,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:22:54" (1/1) ... [2020-10-29 05:22:54,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:22:54,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:22:57,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:22:57,364 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:22:58,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:22:59,120 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:22:59,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:59 WrapperNode [2020-10-29 05:22:59,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:22:59,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:22:59,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:22:59,123 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:22:59,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:59" (1/1) ... [2020-10-29 05:22:59,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:59" (1/1) ... [2020-10-29 05:22:59,287 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:59" (1/1) ... [2020-10-29 05:22:59,287 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:59" (1/1) ... [2020-10-29 05:22:59,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:59" (1/1) ... [2020-10-29 05:22:59,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:59" (1/1) ... [2020-10-29 05:22:59,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:59" (1/1) ... [2020-10-29 05:22:59,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:22:59,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:22:59,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:22:59,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:22:59,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:59" (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 [2020-10-29 05:22:59,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:23:00,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:23:00,007 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:23:00,007 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:23:00,008 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:23:00,008 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:23:00,008 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:23:00,008 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 05:23:00,008 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-29 05:23:00,008 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-29 05:23:00,009 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-29 05:23:00,009 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:23:00,009 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:23:00,009 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:23:00,009 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:23:00,009 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:23:00,010 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 05:23:00,010 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-29 05:23:00,010 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-29 05:23:00,015 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-29 05:23:00,015 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:23:00,016 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:23:00,016 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:23:00,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:23:00,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:23:00,016 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:23:00,016 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:23:00,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:23:00,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:23:00,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:23:00,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:23:00,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:23:00,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:23:15,099 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:23:15,099 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:23:15,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:23:15 BoogieIcfgContainer [2020-10-29 05:23:15,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:23:15,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:23:15,107 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:23:15,110 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:23:15,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:22:54" (1/3) ... [2020-10-29 05:23:15,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a87e8cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:23:15, skipping insertion in model container [2020-10-29 05:23:15,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:59" (2/3) ... [2020-10-29 05:23:15,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a87e8cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:23:15, skipping insertion in model container [2020-10-29 05:23:15,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:23:15" (3/3) ... [2020-10-29 05:23:15,114 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label20.c [2020-10-29 05:23:15,127 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:23:15,134 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:23:15,148 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:23:15,188 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:23:15,189 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:23:15,189 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:23:15,189 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:23:15,189 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:23:15,189 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:23:15,189 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:23:15,189 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:23:15,253 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-29 05:23:15,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1706 [2020-10-29 05:23:15,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:23:15,436 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:23:15,437 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:23:15,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:23:15,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1920977959, now seen corresponding path program 1 times [2020-10-29 05:23:15,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:23:15,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859490861] [2020-10-29 05:23:15,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:23:16,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:23:17,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:23:21,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:23:21,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1729 [2020-10-29 05:23:21,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:23:21,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5281 [2020-10-29 05:23:21,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:23:21,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:23:21,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 05:23:21,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:23:21,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1720 [2020-10-29 05:23:21,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 05:23:23,758 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-29 05:23:23,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:23:23,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:23:23,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:23:23,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:23:23,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:23:23,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:23:23,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 05:23:23,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:23:23,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:23:23,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:23:23,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:23:23,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:23:23,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:23:26,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:23:26,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859490861] [2020-10-29 05:23:26,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:23:26,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 05:23:26,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342593610] [2020-10-29 05:23:26,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:23:26,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:23:26,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:23:26,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:23:26,758 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 5 states. [2020-10-29 05:23:26,954 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-29 05:24:02,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:24:02,490 INFO L93 Difference]: Finished difference Result 6315 states and 11856 transitions. [2020-10-29 05:24:02,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:24:02,493 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1705 [2020-10-29 05:24:02,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:24:02,559 INFO L225 Difference]: With dead ends: 6315 [2020-10-29 05:24:02,560 INFO L226 Difference]: Without dead ends: 4025 [2020-10-29 05:24:02,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:24:02,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4025 states. [2020-10-29 05:24:02,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4025 to 3998. [2020-10-29 05:24:02,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3998 states. [2020-10-29 05:24:02,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3998 states to 3998 states and 6428 transitions. [2020-10-29 05:24:02,809 INFO L78 Accepts]: Start accepts. Automaton has 3998 states and 6428 transitions. Word has length 1705 [2020-10-29 05:24:02,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:24:02,814 INFO L481 AbstractCegarLoop]: Abstraction has 3998 states and 6428 transitions. [2020-10-29 05:24:02,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:24:02,814 INFO L276 IsEmpty]: Start isEmpty. Operand 3998 states and 6428 transitions. [2020-10-29 05:24:02,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1715 [2020-10-29 05:24:02,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:24:02,959 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:24:02,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:24:02,959 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:24:02,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:24:02,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1400465757, now seen corresponding path program 1 times [2020-10-29 05:24:02,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:24:02,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831644177] [2020-10-29 05:24:02,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:24:03,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:24:03,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:24:05,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:24:08,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:24:08,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1740 [2020-10-29 05:24:08,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:24:08,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-29 05:24:08,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:24:08,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:24:08,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 05:24:08,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 05:24:08,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1717 [2020-10-29 05:24:08,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:24:10,036 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-29 05:24:10,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:24:10,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:24:10,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:24:10,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:24:10,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:24:10,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:24:10,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 05:24:10,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:24:10,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:24:10,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:24:10,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:24:10,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:24:10,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:24:10,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:24:10,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:24:10,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:24:10,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:24:10,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:24:10,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:24:10,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 05:24:10,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:24:10,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:24:10,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:24:10,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:24:10,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 05:24:10,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:24:12,867 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:24:12,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831644177] [2020-10-29 05:24:12,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:24:12,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:24:12,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591552896] [2020-10-29 05:24:12,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:24:12,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:24:12,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:24:12,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:24:12,874 INFO L87 Difference]: Start difference. First operand 3998 states and 6428 transitions. Second operand 5 states. [2020-10-29 05:24:13,163 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-29 05:24:50,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:24:50,559 INFO L93 Difference]: Finished difference Result 11577 states and 18835 transitions. [2020-10-29 05:24:50,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:24:50,561 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1714 [2020-10-29 05:24:50,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:24:50,610 INFO L225 Difference]: With dead ends: 11577 [2020-10-29 05:24:50,611 INFO L226 Difference]: Without dead ends: 7585 [2020-10-29 05:24:50,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:24:50,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7585 states. [2020-10-29 05:24:50,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7585 to 7538. [2020-10-29 05:24:50,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7538 states. [2020-10-29 05:24:50,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7538 states to 7538 states and 10590 transitions. [2020-10-29 05:24:50,916 INFO L78 Accepts]: Start accepts. Automaton has 7538 states and 10590 transitions. Word has length 1714 [2020-10-29 05:24:50,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:24:50,921 INFO L481 AbstractCegarLoop]: Abstraction has 7538 states and 10590 transitions. [2020-10-29 05:24:50,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:24:50,921 INFO L276 IsEmpty]: Start isEmpty. Operand 7538 states and 10590 transitions. [2020-10-29 05:24:50,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1721 [2020-10-29 05:24:50,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:24:50,978 INFO L422 BasicCegarLoop]: trace histogram [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, 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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] [2020-10-29 05:24:50,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:24:50,979 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:24:50,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:24:50,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1166113959, now seen corresponding path program 1 times [2020-10-29 05:24:50,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:24:50,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2063909867] [2020-10-29 05:24:50,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:24:51,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:24:51,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:24:53,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:24:56,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:24:56,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1746 [2020-10-29 05:24:56,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:24:56,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5164 [2020-10-29 05:24:56,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:24:56,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:24:56,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 05:24:56,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 05:24:56,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1692 [2020-10-29 05:24:56,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:24:58,541 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-29 05:24:58,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:24:58,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:24:58,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:24:58,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:24:58,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:24:58,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:24:58,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:24:58,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:24:58,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:24:58,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:24:58,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:24:58,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:24:58,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:24:58,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:24:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:24:58,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:24:58,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:24:58,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:24:58,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:24:58,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 05:24:58,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:24:58,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:24:58,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 05:24:58,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:24:58,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 05:24:58,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:25:15,815 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:25:15,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2063909867] [2020-10-29 05:25:15,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:25:15,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:25:15,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852515628] [2020-10-29 05:25:15,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:25:15,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:25:15,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:25:15,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:25:15,825 INFO L87 Difference]: Start difference. First operand 7538 states and 10590 transitions. Second operand 6 states. [2020-10-29 05:25:16,013 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-29 05:25:16,418 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-29 05:26:11,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:26:11,064 INFO L93 Difference]: Finished difference Result 23755 states and 34879 transitions. [2020-10-29 05:26:11,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 05:26:11,065 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1720 [2020-10-29 05:26:11,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:26:11,151 INFO L225 Difference]: With dead ends: 23755 [2020-10-29 05:26:11,152 INFO L226 Difference]: Without dead ends: 14548 [2020-10-29 05:26:11,178 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 9 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:26:11,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14548 states. [2020-10-29 05:26:11,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14548 to 14544. [2020-10-29 05:26:11,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14544 states. [2020-10-29 05:26:11,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14544 states to 14544 states and 19070 transitions. [2020-10-29 05:26:11,599 INFO L78 Accepts]: Start accepts. Automaton has 14544 states and 19070 transitions. Word has length 1720 [2020-10-29 05:26:11,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:26:11,599 INFO L481 AbstractCegarLoop]: Abstraction has 14544 states and 19070 transitions. [2020-10-29 05:26:11,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:26:11,600 INFO L276 IsEmpty]: Start isEmpty. Operand 14544 states and 19070 transitions. [2020-10-29 05:26:11,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1728 [2020-10-29 05:26:11,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:26:11,672 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:26:11,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:26:11,673 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:26:11,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:26:11,674 INFO L82 PathProgramCache]: Analyzing trace with hash -678422920, now seen corresponding path program 1 times [2020-10-29 05:26:11,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:26:11,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320470491] [2020-10-29 05:26:11,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:26:12,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:26:12,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:26:13,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:26:13,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:26:17,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:26:17,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1753 [2020-10-29 05:26:17,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:26:17,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 05:26:17,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:26:17,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:26:17,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 05:26:17,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 05:26:17,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1717 [2020-10-29 05:26:17,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:26:18,128 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-29 05:26:18,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:26:18,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:26:18,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:26:18,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:26:18,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:26:18,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:26:18,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:26:18,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:26:18,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:26:18,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:26:18,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:26:18,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:26:18,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:26:18,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:26:18,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:26:18,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:26:18,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:26:18,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 05:26:18,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:26:18,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 05:26:18,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:26:18,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:26:18,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:26:18,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:26:18,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 05:26:18,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:26:20,883 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:26:20,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320470491] [2020-10-29 05:26:20,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:26:20,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:26:20,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590655885] [2020-10-29 05:26:20,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:26:20,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:26:20,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:26:20,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:26:20,888 INFO L87 Difference]: Start difference. First operand 14544 states and 19070 transitions. Second operand 5 states. [2020-10-29 05:26:21,190 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 75