./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label40+token_ring.08.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label40+token_ring.08.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d82b800c515c04812d9c150cf365a0cfa0ea150fbe8533e2e65b2216ea091fd6 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 12:30:39,416 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 12:30:39,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 12:30:39,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 12:30:39,469 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 12:30:39,470 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 12:30:39,472 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 12:30:39,476 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 12:30:39,478 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 12:30:39,480 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 12:30:39,481 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 12:30:39,482 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 12:30:39,483 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 12:30:39,485 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 12:30:39,485 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 12:30:39,486 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 12:30:39,487 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 12:30:39,487 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 12:30:39,488 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 12:30:39,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 12:30:39,490 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 12:30:39,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 12:30:39,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 12:30:39,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 12:30:39,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 12:30:39,509 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 12:30:39,509 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 12:30:39,510 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 12:30:39,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 12:30:39,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 12:30:39,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 12:30:39,511 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 12:30:39,512 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 12:30:39,512 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 12:30:39,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 12:30:39,513 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 12:30:39,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 12:30:39,514 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 12:30:39,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 12:30:39,514 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 12:30:39,515 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 12:30:39,517 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 12:30:39,536 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 12:30:39,536 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 12:30:39,536 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 12:30:39,536 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 12:30:39,537 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 12:30:39,537 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 12:30:39,537 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 12:30:39,537 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 12:30:39,538 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 12:30:39,538 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 12:30:39,538 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 12:30:39,538 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 12:30:39,538 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 12:30:39,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 12:30:39,538 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 12:30:39,539 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 12:30:39,539 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 12:30:39,539 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 12:30:39,539 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 12:30:39,539 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 12:30:39,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 12:30:39,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 12:30:39,540 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 12:30:39,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 12:30:39,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:30:39,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 12:30:39,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 12:30:39,540 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 12:30:39,540 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 12:30:39,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 12:30:39,541 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 12:30:39,541 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 12:30:39,541 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 12:30:39,541 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 12:30:39,541 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d82b800c515c04812d9c150cf365a0cfa0ea150fbe8533e2e65b2216ea091fd6 [2021-12-22 12:30:39,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 12:30:39,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 12:30:39,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 12:30:39,706 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 12:30:39,706 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 12:30:39,707 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label40+token_ring.08.cil-1.c [2021-12-22 12:30:39,759 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7aca65c96/478d6d36690045a599ef9f2e766b65dc/FLAGb4d17cd18 [2021-12-22 12:30:40,424 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 12:30:40,425 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label40+token_ring.08.cil-1.c [2021-12-22 12:30:40,459 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7aca65c96/478d6d36690045a599ef9f2e766b65dc/FLAGb4d17cd18 [2021-12-22 12:30:40,549 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7aca65c96/478d6d36690045a599ef9f2e766b65dc [2021-12-22 12:30:40,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 12:30:40,555 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 12:30:40,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 12:30:40,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 12:30:40,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 12:30:40,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:30:40" (1/1) ... [2021-12-22 12:30:40,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@555336c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:30:40, skipping insertion in model container [2021-12-22 12:30:40,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:30:40" (1/1) ... [2021-12-22 12:30:40,566 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 12:30:40,723 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 12:30:41,897 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label40+token_ring.08.cil-1.c[377069,377082] [2021-12-22 12:30:41,930 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label40+token_ring.08.cil-1.c[383339,383352] [2021-12-22 12:30:42,114 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:30:42,122 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 12:30:42,700 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label40+token_ring.08.cil-1.c[377069,377082] [2021-12-22 12:30:42,710 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label40+token_ring.08.cil-1.c[383339,383352] [2021-12-22 12:30:42,724 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:30:42,789 INFO L208 MainTranslator]: Completed translation [2021-12-22 12:30:42,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:30:42 WrapperNode [2021-12-22 12:30:42,789 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 12:30:42,790 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 12:30:42,790 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 12:30:42,790 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 12:30:42,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:30:42" (1/1) ... [2021-12-22 12:30:42,866 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:30:42" (1/1) ... [2021-12-22 12:30:43,172 INFO L137 Inliner]: procedures = 60, calls = 65, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 12967 [2021-12-22 12:30:43,172 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 12:30:43,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 12:30:43,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 12:30:43,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 12:30:43,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:30:42" (1/1) ... [2021-12-22 12:30:43,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:30:42" (1/1) ... [2021-12-22 12:30:43,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:30:42" (1/1) ... [2021-12-22 12:30:43,224 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:30:42" (1/1) ... [2021-12-22 12:30:43,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:30:42" (1/1) ... [2021-12-22 12:30:43,534 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:30:42" (1/1) ... [2021-12-22 12:30:43,580 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:30:42" (1/1) ... [2021-12-22 12:30:43,664 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 12:30:43,666 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 12:30:43,666 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 12:30:43,666 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 12:30:43,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:30:42" (1/1) ... [2021-12-22 12:30:43,673 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:30:43,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 12:30:43,705 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 12:30:43,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 12:30:43,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 12:30:43,755 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-22 12:30:43,755 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-22 12:30:43,755 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-22 12:30:43,755 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-22 12:30:43,756 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-22 12:30:43,756 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-22 12:30:43,756 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-22 12:30:43,756 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-22 12:30:43,756 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-22 12:30:43,756 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-22 12:30:43,756 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-22 12:30:43,756 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-22 12:30:43,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 12:30:43,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 12:30:43,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 12:30:43,845 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 12:30:43,846 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 12:30:48,738 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 12:30:48,764 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 12:30:48,765 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-12-22 12:30:48,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:30:48 BoogieIcfgContainer [2021-12-22 12:30:48,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 12:30:48,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 12:30:48,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 12:30:48,781 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 12:30:48,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:30:40" (1/3) ... [2021-12-22 12:30:48,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc41fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:30:48, skipping insertion in model container [2021-12-22 12:30:48,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:30:42" (2/3) ... [2021-12-22 12:30:48,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc41fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:30:48, skipping insertion in model container [2021-12-22 12:30:48,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:30:48" (3/3) ... [2021-12-22 12:30:48,784 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label40+token_ring.08.cil-1.c [2021-12-22 12:30:48,788 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 12:30:48,788 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-22 12:30:48,830 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 12:30:48,835 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 12:30:48,835 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-22 12:30:48,870 INFO L276 IsEmpty]: Start isEmpty. Operand has 2465 states, 2434 states have (on average 1.8483976992604765) internal successors, (4499), 2437 states have internal predecessors, (4499), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-22 12:30:48,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-22 12:30:48,881 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:30:48,881 INFO L514 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] [2021-12-22 12:30:48,882 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:30:48,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:30:48,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1316356206, now seen corresponding path program 1 times [2021-12-22 12:30:48,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:30:48,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507645385] [2021-12-22 12:30:48,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:30:48,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:30:49,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:30:49,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:30:49,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:30:49,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 12:30:49,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:30:49,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-22 12:30:49,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:30:49,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 12:30:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:30:49,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 12:30:49,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:30:49,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:30:49,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:30:49,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507645385] [2021-12-22 12:30:49,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507645385] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:30:49,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:30:49,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 12:30:49,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717898802] [2021-12-22 12:30:49,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:30:49,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:30:49,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:30:49,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:30:49,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:30:49,267 INFO L87 Difference]: Start difference. First operand has 2465 states, 2434 states have (on average 1.8483976992604765) internal successors, (4499), 2437 states have internal predecessors, (4499), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:30:50,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:30:50,188 INFO L93 Difference]: Finished difference Result 5022 states and 9244 transitions. [2021-12-22 12:30:50,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 12:30:50,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-22 12:30:50,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:30:50,206 INFO L225 Difference]: With dead ends: 5022 [2021-12-22 12:30:50,206 INFO L226 Difference]: Without dead ends: 2496 [2021-12-22 12:30:50,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-22 12:30:50,215 INFO L933 BasicCegarLoop]: 4499 mSDtfsCounter, 734 mSDsluCounter, 12377 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 16876 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 12:30:50,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [754 Valid, 16876 Invalid, 547 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 12:30:50,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2496 states. [2021-12-22 12:30:50,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2496 to 2398. [2021-12-22 12:30:50,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2368 states have (on average 1.8344594594594594) internal successors, (4344), 2370 states have internal predecessors, (4344), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-22 12:30:50,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 4388 transitions. [2021-12-22 12:30:50,303 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 4388 transitions. Word has length 134 [2021-12-22 12:30:50,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:30:50,303 INFO L470 AbstractCegarLoop]: Abstraction has 2398 states and 4388 transitions. [2021-12-22 12:30:50,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:30:50,304 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 4388 transitions. [2021-12-22 12:30:50,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-22 12:30:50,306 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:30:50,306 INFO L514 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] [2021-12-22 12:30:50,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 12:30:50,307 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:30:50,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:30:50,320 INFO L85 PathProgramCache]: Analyzing trace with hash 2022952812, now seen corresponding path program 1 times [2021-12-22 12:30:50,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:30:50,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109894775] [2021-12-22 12:30:50,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:30:50,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:30:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:30:50,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:30:50,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:30:50,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 12:30:50,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:30:50,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-22 12:30:50,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:30:50,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 12:30:50,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:30:50,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 12:30:50,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:30:50,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:30:50,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:30:50,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109894775] [2021-12-22 12:30:50,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109894775] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:30:50,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:30:50,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 12:30:50,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214368861] [2021-12-22 12:30:50,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:30:50,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 12:30:50,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:30:50,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 12:30:50,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 12:30:50,495 INFO L87 Difference]: Start difference. First operand 2398 states and 4388 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:30:52,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:30:52,096 INFO L93 Difference]: Finished difference Result 3126 states and 5555 transitions. [2021-12-22 12:30:52,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 12:30:52,096 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-22 12:30:52,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:30:52,105 INFO L225 Difference]: With dead ends: 3126 [2021-12-22 12:30:52,105 INFO L226 Difference]: Without dead ends: 2865 [2021-12-22 12:30:52,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-22 12:30:52,108 INFO L933 BasicCegarLoop]: 4466 mSDtfsCounter, 5050 mSDsluCounter, 12616 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5065 SdHoareTripleChecker+Valid, 17082 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-22 12:30:52,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5065 Valid, 17082 Invalid, 1481 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [100 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-22 12:30:52,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2021-12-22 12:30:52,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 2670. [2021-12-22 12:30:52,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2616 states have (on average 1.8103975535168195) internal successors, (4736), 2619 states have internal predecessors, (4736), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2021-12-22 12:30:52,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 4817 transitions. [2021-12-22 12:30:52,167 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 4817 transitions. Word has length 134 [2021-12-22 12:30:52,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:30:52,168 INFO L470 AbstractCegarLoop]: Abstraction has 2670 states and 4817 transitions. [2021-12-22 12:30:52,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:30:52,168 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 4817 transitions. [2021-12-22 12:30:52,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-22 12:30:52,170 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:30:52,170 INFO L514 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] [2021-12-22 12:30:52,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 12:30:52,170 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:30:52,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:30:52,171 INFO L85 PathProgramCache]: Analyzing trace with hash 316449264, now seen corresponding path program 1 times [2021-12-22 12:30:52,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:30:52,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712072640] [2021-12-22 12:30:52,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:30:52,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:30:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:30:52,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:30:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:30:52,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 12:30:52,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:30:52,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-22 12:30:52,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:30:52,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 12:30:52,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:30:52,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 12:30:52,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:30:52,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:30:52,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:30:52,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712072640] [2021-12-22 12:30:52,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712072640] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:30:52,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:30:52,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:30:52,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944531014] [2021-12-22 12:30:52,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:30:52,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:30:52,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:30:52,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:30:52,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:30:52,349 INFO L87 Difference]: Start difference. First operand 2670 states and 4817 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:30:54,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:30:54,279 INFO L93 Difference]: Finished difference Result 3779 states and 6593 transitions. [2021-12-22 12:30:54,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:30:54,280 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-22 12:30:54,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:30:54,293 INFO L225 Difference]: With dead ends: 3779 [2021-12-22 12:30:54,293 INFO L226 Difference]: Without dead ends: 3246 [2021-12-22 12:30:54,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:30:54,304 INFO L933 BasicCegarLoop]: 4677 mSDtfsCounter, 5064 mSDsluCounter, 17247 mSDsCounter, 0 mSdLazyCounter, 2164 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5079 SdHoareTripleChecker+Valid, 21924 SdHoareTripleChecker+Invalid, 2232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 2164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-22 12:30:54,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5079 Valid, 21924 Invalid, 2232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 2164 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-22 12:30:54,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3246 states. [2021-12-22 12:30:54,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3246 to 2923. [2021-12-22 12:30:54,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2923 states, 2845 states have (on average 1.789103690685413) internal successors, (5090), 2849 states have internal predecessors, (5090), 56 states have call successors, (56), 18 states have call predecessors, (56), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2021-12-22 12:30:54,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 5207 transitions. [2021-12-22 12:30:54,385 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 5207 transitions. Word has length 134 [2021-12-22 12:30:54,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:30:54,385 INFO L470 AbstractCegarLoop]: Abstraction has 2923 states and 5207 transitions. [2021-12-22 12:30:54,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:30:54,386 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 5207 transitions. [2021-12-22 12:30:54,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-22 12:30:54,388 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:30:54,388 INFO L514 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] [2021-12-22 12:30:54,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 12:30:54,388 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:30:54,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:30:54,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1976631762, now seen corresponding path program 1 times [2021-12-22 12:30:54,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:30:54,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113238541] [2021-12-22 12:30:54,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:30:54,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:30:54,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:30:54,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:30:54,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:30:54,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 12:30:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:30:54,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-22 12:30:54,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:30:54,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 12:30:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:30:54,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 12:30:54,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:30:54,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:30:54,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:30:54,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113238541] [2021-12-22 12:30:54,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113238541] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:30:54,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:30:54,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:30:54,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982493715] [2021-12-22 12:30:54,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:30:54,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:30:54,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:30:54,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:30:54,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:30:54,508 INFO L87 Difference]: Start difference. First operand 2923 states and 5207 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:30:56,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:30:56,306 INFO L93 Difference]: Finished difference Result 4741 states and 8111 transitions. [2021-12-22 12:30:56,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:30:56,307 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-22 12:30:56,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:30:56,321 INFO L225 Difference]: With dead ends: 4741 [2021-12-22 12:30:56,322 INFO L226 Difference]: Without dead ends: 3955 [2021-12-22 12:30:56,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:30:56,336 INFO L933 BasicCegarLoop]: 4494 mSDtfsCounter, 5141 mSDsluCounter, 16786 mSDsCounter, 0 mSdLazyCounter, 1927 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5156 SdHoareTripleChecker+Valid, 21280 SdHoareTripleChecker+Invalid, 2026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-22 12:30:56,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5156 Valid, 21280 Invalid, 2026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1927 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-22 12:30:56,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2021-12-22 12:30:56,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 3430. [2021-12-22 12:30:56,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3430 states, 3304 states have (on average 1.7551452784503632) internal successors, (5799), 3310 states have internal predecessors, (5799), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2021-12-22 12:30:56,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3430 states to 3430 states and 5992 transitions. [2021-12-22 12:30:56,443 INFO L78 Accepts]: Start accepts. Automaton has 3430 states and 5992 transitions. Word has length 134 [2021-12-22 12:30:56,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:30:56,444 INFO L470 AbstractCegarLoop]: Abstraction has 3430 states and 5992 transitions. [2021-12-22 12:30:56,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:30:56,448 INFO L276 IsEmpty]: Start isEmpty. Operand 3430 states and 5992 transitions. [2021-12-22 12:30:56,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-22 12:30:56,449 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:30:56,449 INFO L514 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] [2021-12-22 12:30:56,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 12:30:56,450 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:30:56,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:30:56,450 INFO L85 PathProgramCache]: Analyzing trace with hash -249486800, now seen corresponding path program 1 times [2021-12-22 12:30:56,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:30:56,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346380221] [2021-12-22 12:30:56,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:30:56,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:30:56,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:30:56,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:30:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:30:56,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 12:30:56,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:30:56,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-22 12:30:56,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:30:56,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 12:30:56,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:30:56,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 12:30:56,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:30:56,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:30:56,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:30:56,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346380221] [2021-12-22 12:30:56,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346380221] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:30:56,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:30:56,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:30:56,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293424092] [2021-12-22 12:30:56,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:30:56,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:30:56,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:30:56,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:30:56,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:30:56,558 INFO L87 Difference]: Start difference. First operand 3430 states and 5992 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:30:58,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:30:58,506 INFO L93 Difference]: Finished difference Result 6592 states and 11016 transitions. [2021-12-22 12:30:58,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:30:58,506 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-22 12:30:58,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:30:58,526 INFO L225 Difference]: With dead ends: 6592 [2021-12-22 12:30:58,526 INFO L226 Difference]: Without dead ends: 5299 [2021-12-22 12:30:58,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:30:58,531 INFO L933 BasicCegarLoop]: 4665 mSDtfsCounter, 5059 mSDsluCounter, 17243 mSDsCounter, 0 mSdLazyCounter, 2167 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5074 SdHoareTripleChecker+Valid, 21908 SdHoareTripleChecker+Invalid, 2240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-22 12:30:58,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5074 Valid, 21908 Invalid, 2240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 2167 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-22 12:30:58,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5299 states. [2021-12-22 12:30:58,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5299 to 4445. [2021-12-22 12:30:58,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4445 states, 4223 states have (on average 1.7089746625621596) internal successors, (7217), 4233 states have internal predecessors, (7217), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2021-12-22 12:30:58,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4445 states to 4445 states and 7568 transitions. [2021-12-22 12:30:58,703 INFO L78 Accepts]: Start accepts. Automaton has 4445 states and 7568 transitions. Word has length 134 [2021-12-22 12:30:58,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:30:58,703 INFO L470 AbstractCegarLoop]: Abstraction has 4445 states and 7568 transitions. [2021-12-22 12:30:58,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:30:58,704 INFO L276 IsEmpty]: Start isEmpty. Operand 4445 states and 7568 transitions. [2021-12-22 12:30:58,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-22 12:30:58,706 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:30:58,707 INFO L514 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] [2021-12-22 12:30:58,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 12:30:58,707 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:30:58,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:30:58,707 INFO L85 PathProgramCache]: Analyzing trace with hash 221869550, now seen corresponding path program 1 times [2021-12-22 12:30:58,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:30:58,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748673825] [2021-12-22 12:30:58,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:30:58,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:30:58,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:30:58,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:30:58,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:30:58,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 12:30:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:30:58,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-22 12:30:58,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:30:58,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 12:30:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:30:58,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 12:30:58,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:30:58,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:30:58,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:30:58,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748673825] [2021-12-22 12:30:58,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748673825] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:30:58,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:30:58,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:30:58,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224813603] [2021-12-22 12:30:58,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:30:58,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:30:58,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:30:58,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:30:58,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:30:58,823 INFO L87 Difference]: Start difference. First operand 4445 states and 7568 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:31:00,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:31:00,937 INFO L93 Difference]: Finished difference Result 10286 states and 16830 transitions. [2021-12-22 12:31:00,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:31:00,937 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-22 12:31:00,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:31:00,977 INFO L225 Difference]: With dead ends: 10286 [2021-12-22 12:31:00,977 INFO L226 Difference]: Without dead ends: 7978 [2021-12-22 12:31:00,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:31:00,990 INFO L933 BasicCegarLoop]: 4657 mSDtfsCounter, 5054 mSDsluCounter, 17243 mSDsCounter, 0 mSdLazyCounter, 2147 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5069 SdHoareTripleChecker+Valid, 21900 SdHoareTripleChecker+Invalid, 2221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-22 12:31:00,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5069 Valid, 21900 Invalid, 2221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2147 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-22 12:31:01,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7978 states. [2021-12-22 12:31:01,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7978 to 6489. [2021-12-22 12:31:01,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6489 states, 6075 states have (on average 1.6587654320987655) internal successors, (10077), 6093 states have internal predecessors, (10077), 294 states have call successors, (294), 102 states have call predecessors, (294), 118 states have return successors, (391), 309 states have call predecessors, (391), 294 states have call successors, (391) [2021-12-22 12:31:01,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6489 states to 6489 states and 10762 transitions. [2021-12-22 12:31:01,206 INFO L78 Accepts]: Start accepts. Automaton has 6489 states and 10762 transitions. Word has length 134 [2021-12-22 12:31:01,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:31:01,207 INFO L470 AbstractCegarLoop]: Abstraction has 6489 states and 10762 transitions. [2021-12-22 12:31:01,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:31:01,207 INFO L276 IsEmpty]: Start isEmpty. Operand 6489 states and 10762 transitions. [2021-12-22 12:31:01,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-22 12:31:01,210 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:31:01,210 INFO L514 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] [2021-12-22 12:31:01,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 12:31:01,211 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:31:01,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:31:01,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1909481172, now seen corresponding path program 1 times [2021-12-22 12:31:01,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:31:01,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687342992] [2021-12-22 12:31:01,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:31:01,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:31:01,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:31:01,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:31:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:31:01,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 12:31:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:31:01,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-22 12:31:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:31:01,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 12:31:01,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:31:01,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 12:31:01,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:31:01,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:31:01,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:31:01,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687342992] [2021-12-22 12:31:01,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687342992] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:31:01,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:31:01,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:31:01,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713346650] [2021-12-22 12:31:01,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:31:01,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:31:01,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:31:01,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:31:01,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:31:01,322 INFO L87 Difference]: Start difference. First operand 6489 states and 10762 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:31:03,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:31:03,422 INFO L93 Difference]: Finished difference Result 17692 states and 28550 transitions. [2021-12-22 12:31:03,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:31:03,422 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-22 12:31:03,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:31:03,456 INFO L225 Difference]: With dead ends: 17692 [2021-12-22 12:31:03,457 INFO L226 Difference]: Without dead ends: 13340 [2021-12-22 12:31:03,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:31:03,473 INFO L933 BasicCegarLoop]: 4652 mSDtfsCounter, 5053 mSDsluCounter, 17243 mSDsCounter, 0 mSdLazyCounter, 2139 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5068 SdHoareTripleChecker+Valid, 21895 SdHoareTripleChecker+Invalid, 2213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-22 12:31:03,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5068 Valid, 21895 Invalid, 2213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2139 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-22 12:31:03,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13340 states. [2021-12-22 12:31:03,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13340 to 10590. [2021-12-22 12:31:03,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10590 states, 9792 states have (on average 1.615093954248366) internal successors, (15815), 9826 states have internal predecessors, (15815), 566 states have call successors, (566), 198 states have call predecessors, (566), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2021-12-22 12:31:03,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10590 states to 10590 states and 17222 transitions. [2021-12-22 12:31:03,857 INFO L78 Accepts]: Start accepts. Automaton has 10590 states and 17222 transitions. Word has length 134 [2021-12-22 12:31:03,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:31:03,857 INFO L470 AbstractCegarLoop]: Abstraction has 10590 states and 17222 transitions. [2021-12-22 12:31:03,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:31:03,858 INFO L276 IsEmpty]: Start isEmpty. Operand 10590 states and 17222 transitions. [2021-12-22 12:31:03,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-22 12:31:03,863 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:31:03,863 INFO L514 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] [2021-12-22 12:31:03,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 12:31:03,864 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:31:03,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:31:03,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1346901550, now seen corresponding path program 1 times [2021-12-22 12:31:03,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:31:03,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214358862] [2021-12-22 12:31:03,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:31:03,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:31:03,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:31:03,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:31:03,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:31:03,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 12:31:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:31:03,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-22 12:31:04,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:31:04,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 12:31:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:31:04,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 12:31:04,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:31:04,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:31:04,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:31:04,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214358862] [2021-12-22 12:31:04,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214358862] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:31:04,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:31:04,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:31:04,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331341603] [2021-12-22 12:31:04,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:31:04,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:31:04,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:31:04,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:31:04,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:31:04,020 INFO L87 Difference]: Start difference. First operand 10590 states and 17222 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:31:05,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:31:05,371 INFO L93 Difference]: Finished difference Result 21934 states and 35495 transitions. [2021-12-22 12:31:05,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 12:31:05,371 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-22 12:31:05,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:31:05,411 INFO L225 Difference]: With dead ends: 21934 [2021-12-22 12:31:05,411 INFO L226 Difference]: Without dead ends: 13481 [2021-12-22 12:31:05,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-22 12:31:05,435 INFO L933 BasicCegarLoop]: 4398 mSDtfsCounter, 4752 mSDsluCounter, 16508 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4768 SdHoareTripleChecker+Valid, 20906 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-22 12:31:05,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4768 Valid, 20906 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-22 12:31:05,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13481 states. [2021-12-22 12:31:05,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13481 to 10590. [2021-12-22 12:31:05,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10590 states, 9792 states have (on average 1.6117238562091503) internal successors, (15782), 9826 states have internal predecessors, (15782), 566 states have call successors, (566), 198 states have call predecessors, (566), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2021-12-22 12:31:05,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10590 states to 10590 states and 17189 transitions. [2021-12-22 12:31:05,943 INFO L78 Accepts]: Start accepts. Automaton has 10590 states and 17189 transitions. Word has length 134 [2021-12-22 12:31:05,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:31:05,943 INFO L470 AbstractCegarLoop]: Abstraction has 10590 states and 17189 transitions. [2021-12-22 12:31:05,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:31:05,944 INFO L276 IsEmpty]: Start isEmpty. Operand 10590 states and 17189 transitions. [2021-12-22 12:31:05,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-22 12:31:05,951 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:31:05,951 INFO L514 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] [2021-12-22 12:31:05,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 12:31:05,951 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:31:05,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:31:05,952 INFO L85 PathProgramCache]: Analyzing trace with hash -626263828, now seen corresponding path program 1 times [2021-12-22 12:31:05,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:31:05,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635686002] [2021-12-22 12:31:05,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:31:05,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:31:05,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:31:05,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:31:05,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:31:06,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 12:31:06,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:31:06,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-22 12:31:06,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:31:06,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 12:31:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:31:06,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 12:31:06,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:31:06,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:31:06,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:31:06,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635686002] [2021-12-22 12:31:06,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635686002] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:31:06,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:31:06,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:31:06,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974887318] [2021-12-22 12:31:06,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:31:06,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:31:06,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:31:06,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:31:06,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:31:06,068 INFO L87 Difference]: Start difference. First operand 10590 states and 17189 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:31:08,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:31:08,879 INFO L93 Difference]: Finished difference Result 32469 states and 51948 transitions. [2021-12-22 12:31:08,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:31:08,880 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-22 12:31:08,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:31:08,947 INFO L225 Difference]: With dead ends: 32469 [2021-12-22 12:31:08,947 INFO L226 Difference]: Without dead ends: 24016 [2021-12-22 12:31:08,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:31:08,976 INFO L933 BasicCegarLoop]: 4641 mSDtfsCounter, 5045 mSDsluCounter, 17243 mSDsCounter, 0 mSdLazyCounter, 2112 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5060 SdHoareTripleChecker+Valid, 21884 SdHoareTripleChecker+Invalid, 2186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-22 12:31:08,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5060 Valid, 21884 Invalid, 2186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2112 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-22 12:31:08,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24016 states. [2021-12-22 12:31:09,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24016 to 18856. [2021-12-22 12:31:09,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18856 states, 17290 states have (on average 1.5792943898207057) internal successors, (27306), 17356 states have internal predecessors, (27306), 1110 states have call successors, (1110), 390 states have call predecessors, (1110), 454 states have return successors, (1903), 1173 states have call predecessors, (1903), 1110 states have call successors, (1903) [2021-12-22 12:31:09,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18856 states to 18856 states and 30319 transitions. [2021-12-22 12:31:09,891 INFO L78 Accepts]: Start accepts. Automaton has 18856 states and 30319 transitions. Word has length 134 [2021-12-22 12:31:09,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:31:09,891 INFO L470 AbstractCegarLoop]: Abstraction has 18856 states and 30319 transitions. [2021-12-22 12:31:09,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:31:09,891 INFO L276 IsEmpty]: Start isEmpty. Operand 18856 states and 30319 transitions. [2021-12-22 12:31:09,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-22 12:31:09,900 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:31:09,900 INFO L514 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] [2021-12-22 12:31:09,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 12:31:09,900 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:31:09,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:31:09,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1526842990, now seen corresponding path program 1 times [2021-12-22 12:31:09,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:31:09,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389150898] [2021-12-22 12:31:09,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:31:09,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:31:09,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:31:09,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:31:09,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:31:09,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 12:31:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:31:09,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-22 12:31:09,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:31:09,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 12:31:09,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:31:09,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 12:31:09,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:31:09,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:31:09,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:31:09,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389150898] [2021-12-22 12:31:09,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389150898] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:31:09,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:31:09,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:31:09,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8286907] [2021-12-22 12:31:09,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:31:09,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:31:09,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:31:09,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:31:09,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:31:09,987 INFO L87 Difference]: Start difference. First operand 18856 states and 30319 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:31:14,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:31:14,790 INFO L93 Difference]: Finished difference Result 69837 states and 111398 transitions. [2021-12-22 12:31:14,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:31:14,790 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-22 12:31:14,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:31:14,949 INFO L225 Difference]: With dead ends: 69837 [2021-12-22 12:31:14,950 INFO L226 Difference]: Without dead ends: 53118 [2021-12-22 12:31:15,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-22 12:31:15,003 INFO L933 BasicCegarLoop]: 4634 mSDtfsCounter, 5374 mSDsluCounter, 17235 mSDsCounter, 0 mSdLazyCounter, 2097 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5398 SdHoareTripleChecker+Valid, 21869 SdHoareTripleChecker+Invalid, 2176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-22 12:31:15,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5398 Valid, 21869 Invalid, 2176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2097 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-22 12:31:15,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53118 states. [2021-12-22 12:31:16,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53118 to 35257. [2021-12-22 12:31:16,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35257 states, 32219 states have (on average 1.5616872032030789) internal successors, (50316), 32349 states have internal predecessors, (50316), 2134 states have call successors, (2134), 774 states have call predecessors, (2134), 902 states have return successors, (4449), 2261 states have call predecessors, (4449), 2134 states have call successors, (4449) [2021-12-22 12:31:17,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35257 states to 35257 states and 56899 transitions. [2021-12-22 12:31:17,045 INFO L78 Accepts]: Start accepts. Automaton has 35257 states and 56899 transitions. Word has length 134 [2021-12-22 12:31:17,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:31:17,045 INFO L470 AbstractCegarLoop]: Abstraction has 35257 states and 56899 transitions. [2021-12-22 12:31:17,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:31:17,046 INFO L276 IsEmpty]: Start isEmpty. Operand 35257 states and 56899 transitions. [2021-12-22 12:31:17,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-22 12:31:17,062 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:31:17,062 INFO L514 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] [2021-12-22 12:31:17,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 12:31:17,063 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:31:17,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:31:17,063 INFO L85 PathProgramCache]: Analyzing trace with hash 903561388, now seen corresponding path program 1 times [2021-12-22 12:31:17,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:31:17,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826336580] [2021-12-22 12:31:17,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:31:17,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:31:17,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:31:17,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:31:17,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:31:17,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 12:31:17,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:31:17,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-22 12:31:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:31:17,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 12:31:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:31:17,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 12:31:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:31:17,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:31:17,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:31:17,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826336580] [2021-12-22 12:31:17,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826336580] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:31:17,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:31:17,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:31:17,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098982355] [2021-12-22 12:31:17,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:31:17,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:31:17,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:31:17,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:31:17,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:31:17,177 INFO L87 Difference]: Start difference. First operand 35257 states and 56899 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:31:26,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:31:26,184 INFO L93 Difference]: Finished difference Result 134716 states and 217164 transitions. [2021-12-22 12:31:26,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:31:26,185 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-22 12:31:26,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:31:26,544 INFO L225 Difference]: With dead ends: 134716 [2021-12-22 12:31:26,545 INFO L226 Difference]: Without dead ends: 101596 [2021-12-22 12:31:26,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-22 12:31:26,639 INFO L933 BasicCegarLoop]: 4603 mSDtfsCounter, 5181 mSDsluCounter, 16806 mSDsCounter, 0 mSdLazyCounter, 2255 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5195 SdHoareTripleChecker+Valid, 21409 SdHoareTripleChecker+Invalid, 2355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 2255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-22 12:31:26,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5195 Valid, 21409 Invalid, 2355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 2255 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-22 12:31:26,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101596 states. [2021-12-22 12:31:30,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101596 to 67354. [2021-12-22 12:31:30,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67354 states, 61436 states have (on average 1.5524122664235953) internal successors, (95374), 61694 states have internal predecessors, (95374), 4118 states have call successors, (4118), 1542 states have call predecessors, (4118), 1798 states have return successors, (10935), 4373 states have call predecessors, (10935), 4118 states have call successors, (10935) [2021-12-22 12:31:30,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67354 states to 67354 states and 110427 transitions. [2021-12-22 12:31:31,001 INFO L78 Accepts]: Start accepts. Automaton has 67354 states and 110427 transitions. Word has length 134 [2021-12-22 12:31:31,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:31:31,001 INFO L470 AbstractCegarLoop]: Abstraction has 67354 states and 110427 transitions. [2021-12-22 12:31:31,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:31:31,001 INFO L276 IsEmpty]: Start isEmpty. Operand 67354 states and 110427 transitions. [2021-12-22 12:31:31,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-22 12:31:31,032 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:31:31,033 INFO L514 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] [2021-12-22 12:31:31,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 12:31:31,033 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:31:31,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:31:31,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1022002862, now seen corresponding path program 1 times [2021-12-22 12:31:31,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:31:31,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973666349] [2021-12-22 12:31:31,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:31:31,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:31:31,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:31:31,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:31:31,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:31:31,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 12:31:31,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:31:31,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-22 12:31:31,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:31:31,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 12:31:31,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:31:31,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 12:31:31,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:31:31,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:31:31,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:31:31,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973666349] [2021-12-22 12:31:31,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973666349] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:31:31,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:31:31,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:31:31,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765440763] [2021-12-22 12:31:31,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:31:31,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:31:31,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:31:31,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:31:31,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:31:31,133 INFO L87 Difference]: Start difference. First operand 67354 states and 110427 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)