./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label44+token_ring.05.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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_label44+token_ring.05.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 806c9058928482f755246f30ce94bbbe3c870162d7ccdd45454f74a5441d158a --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 19:21:56,540 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 19:21:56,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 19:21:56,590 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 19:21:56,591 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 19:21:56,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 19:21:56,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 19:21:56,597 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 19:21:56,599 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 19:21:56,603 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 19:21:56,604 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 19:21:56,606 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 19:21:56,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 19:21:56,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 19:21:56,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 19:21:56,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 19:21:56,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 19:21:56,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 19:21:56,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 19:21:56,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 19:21:56,626 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 19:21:56,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 19:21:56,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 19:21:56,629 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 19:21:56,631 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 19:21:56,635 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 19:21:56,636 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 19:21:56,636 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 19:21:56,637 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 19:21:56,638 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 19:21:56,639 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 19:21:56,639 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 19:21:56,641 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 19:21:56,641 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 19:21:56,642 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 19:21:56,643 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 19:21:56,643 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 19:21:56,643 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 19:21:56,643 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 19:21:56,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 19:21:56,645 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 19:21:56,647 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 19:21:56,649 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 19:21:56,683 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 19:21:56,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 19:21:56,684 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 19:21:56,684 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 19:21:56,684 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 19:21:56,685 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 19:21:56,685 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 19:21:56,685 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 19:21:56,686 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 19:21:56,687 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 19:21:56,687 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 19:21:56,687 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 19:21:56,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 19:21:56,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 19:21:56,688 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 19:21:56,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 19:21:56,688 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 19:21:56,688 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 19:21:56,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 19:21:56,689 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 19:21:56,690 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 19:21:56,690 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 19:21:56,690 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 19:21:56,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 19:21:56,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 19:21:56,691 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 19:21:56,691 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 19:21:56,691 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 19:21:56,691 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 19:21:56,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 19:21:56,692 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 19:21:56,692 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 19:21:56,692 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 19:21:56,693 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 806c9058928482f755246f30ce94bbbe3c870162d7ccdd45454f74a5441d158a [2022-07-19 19:21:56,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 19:21:56,949 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 19:21:56,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 19:21:56,952 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 19:21:56,953 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 19:21:56,953 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label44+token_ring.05.cil-1.c [2022-07-19 19:21:57,008 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4b7ab664/09afcffd20054fed904b1676625d754e/FLAG0e2a60d7e [2022-07-19 19:21:57,789 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 19:21:57,790 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label44+token_ring.05.cil-1.c [2022-07-19 19:21:57,835 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4b7ab664/09afcffd20054fed904b1676625d754e/FLAG0e2a60d7e [2022-07-19 19:21:58,310 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4b7ab664/09afcffd20054fed904b1676625d754e [2022-07-19 19:21:58,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 19:21:58,315 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 19:21:58,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 19:21:58,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 19:21:58,319 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 19:21:58,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 07:21:58" (1/1) ... [2022-07-19 19:21:58,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e9d6d24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:21:58, skipping insertion in model container [2022-07-19 19:21:58,321 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 07:21:58" (1/1) ... [2022-07-19 19:21:58,326 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 19:21:58,516 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 19:22:00,078 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_label44+token_ring.05.cil-1.c[377340,377353] [2022-07-19 19:22:00,119 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_label44+token_ring.05.cil-1.c[383339,383352] [2022-07-19 19:22:00,288 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 19:22:00,297 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 19:22:01,158 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_label44+token_ring.05.cil-1.c[377340,377353] [2022-07-19 19:22:01,166 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_label44+token_ring.05.cil-1.c[383339,383352] [2022-07-19 19:22:01,191 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 19:22:01,263 INFO L208 MainTranslator]: Completed translation [2022-07-19 19:22:01,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:22:01 WrapperNode [2022-07-19 19:22:01,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 19:22:01,265 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 19:22:01,265 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 19:22:01,265 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 19:22:01,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:22:01" (1/1) ... [2022-07-19 19:22:01,349 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:22:01" (1/1) ... [2022-07-19 19:22:01,807 INFO L137 Inliner]: procedures = 54, calls = 56, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 12793 [2022-07-19 19:22:01,808 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 19:22:01,808 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 19:22:01,808 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 19:22:01,809 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 19:22:01,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:22:01" (1/1) ... [2022-07-19 19:22:01,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:22:01" (1/1) ... [2022-07-19 19:22:01,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:22:01" (1/1) ... [2022-07-19 19:22:01,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:22:01" (1/1) ... [2022-07-19 19:22:02,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:22:01" (1/1) ... [2022-07-19 19:22:02,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:22:01" (1/1) ... [2022-07-19 19:22:02,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:22:01" (1/1) ... [2022-07-19 19:22:02,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 19:22:02,281 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 19:22:02,281 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 19:22:02,281 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 19:22:02,283 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:22:01" (1/1) ... [2022-07-19 19:22:02,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 19:22:02,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 19:22:02,321 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) [2022-07-19 19:22:02,341 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 [2022-07-19 19:22:02,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 19:22:02,449 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-19 19:22:02,449 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-19 19:22:02,449 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-19 19:22:02,449 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-19 19:22:02,449 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-19 19:22:02,449 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-19 19:22:02,449 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-19 19:22:02,449 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-19 19:22:02,449 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-19 19:22:02,449 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-19 19:22:02,450 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-19 19:22:02,450 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-19 19:22:02,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 19:22:02,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 19:22:02,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 19:22:02,599 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 19:22:02,600 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 19:22:08,408 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 19:22:08,435 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 19:22:08,435 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2022-07-19 19:22:08,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 07:22:08 BoogieIcfgContainer [2022-07-19 19:22:08,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 19:22:08,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 19:22:08,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 19:22:08,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 19:22:08,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 07:21:58" (1/3) ... [2022-07-19 19:22:08,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40bc99f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 07:22:08, skipping insertion in model container [2022-07-19 19:22:08,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:22:01" (2/3) ... [2022-07-19 19:22:08,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40bc99f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 07:22:08, skipping insertion in model container [2022-07-19 19:22:08,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 07:22:08" (3/3) ... [2022-07-19 19:22:08,447 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.05.cil-1.c [2022-07-19 19:22:08,459 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 19:22:08,459 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 19:22:08,541 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 19:22:08,547 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5debd8d7, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@192d3dd [2022-07-19 19:22:08,547 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 19:22:08,560 INFO L276 IsEmpty]: Start isEmpty. Operand has 2390 states, 2362 states have (on average 1.8526672311600338) internal successors, (4376), 2365 states have internal predecessors, (4376), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-19 19:22:08,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-19 19:22:08,574 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:22:08,575 INFO L195 NwaCegarLoop]: 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] [2022-07-19 19:22:08,575 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:22:08,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:22:08,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1427785225, now seen corresponding path program 1 times [2022-07-19 19:22:08,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:22:08,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109729030] [2022-07-19 19:22:08,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:22:08,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:22:08,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:08,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:22:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:08,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 19:22:08,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:08,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 19:22:08,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:08,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 19:22:08,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:08,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:22:08,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:08,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:22:08,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:22:08,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109729030] [2022-07-19 19:22:08,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109729030] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:22:08,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:22:08,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 19:22:08,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714214263] [2022-07-19 19:22:08,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:22:08,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 19:22:08,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:22:08,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 19:22:08,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 19:22:08,896 INFO L87 Difference]: Start difference. First operand has 2390 states, 2362 states have (on average 1.8526672311600338) internal successors, (4376), 2365 states have internal predecessors, (4376), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 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) [2022-07-19 19:22:09,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:22:09,811 INFO L93 Difference]: Finished difference Result 4837 states and 8925 transitions. [2022-07-19 19:22:09,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 19:22:09,814 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 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 101 [2022-07-19 19:22:09,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:22:09,852 INFO L225 Difference]: With dead ends: 4837 [2022-07-19 19:22:09,852 INFO L226 Difference]: Without dead ends: 2388 [2022-07-19 19:22:09,861 INFO L412 NwaCegarLoop]: 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 [2022-07-19 19:22:09,865 INFO L413 NwaCegarLoop]: 4361 mSDtfsCounter, 507 mSDsluCounter, 12283 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 16644 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 19:22:09,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 16644 Invalid, 398 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [46 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 19:22:09,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2022-07-19 19:22:10,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2323. [2022-07-19 19:22:10,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2323 states, 2296 states have (on average 1.84102787456446) internal successors, (4227), 2298 states have internal predecessors, (4227), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-19 19:22:10,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 4265 transitions. [2022-07-19 19:22:10,033 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 4265 transitions. Word has length 101 [2022-07-19 19:22:10,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:22:10,033 INFO L495 AbstractCegarLoop]: Abstraction has 2323 states and 4265 transitions. [2022-07-19 19:22:10,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 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) [2022-07-19 19:22:10,034 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 4265 transitions. [2022-07-19 19:22:10,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-19 19:22:10,038 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:22:10,038 INFO L195 NwaCegarLoop]: 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] [2022-07-19 19:22:10,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 19:22:10,039 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:22:10,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:22:10,040 INFO L85 PathProgramCache]: Analyzing trace with hash 990118841, now seen corresponding path program 1 times [2022-07-19 19:22:10,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:22:10,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370858390] [2022-07-19 19:22:10,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:22:10,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:22:10,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:10,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:22:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:10,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 19:22:10,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:10,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 19:22:10,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:10,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 19:22:10,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:10,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:22:10,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:10,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:22:10,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:22:10,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370858390] [2022-07-19 19:22:10,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370858390] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:22:10,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:22:10,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 19:22:10,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312786253] [2022-07-19 19:22:10,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:22:10,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 19:22:10,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:22:10,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 19:22:10,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 19:22:10,251 INFO L87 Difference]: Start difference. First operand 2323 states and 4265 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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) [2022-07-19 19:22:11,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:22:11,674 INFO L93 Difference]: Finished difference Result 2835 states and 5072 transitions. [2022-07-19 19:22:11,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 19:22:11,675 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2022-07-19 19:22:11,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:22:11,687 INFO L225 Difference]: With dead ends: 2835 [2022-07-19 19:22:11,688 INFO L226 Difference]: Without dead ends: 2646 [2022-07-19 19:22:11,690 INFO L412 NwaCegarLoop]: 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 [2022-07-19 19:22:11,691 INFO L413 NwaCegarLoop]: 4316 mSDtfsCounter, 4705 mSDsluCounter, 12377 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4717 SdHoareTripleChecker+Valid, 16693 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 19:22:11,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4717 Valid, 16693 Invalid, 1081 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 19:22:11,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2646 states. [2022-07-19 19:22:11,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646 to 2517. [2022-07-19 19:22:11,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2517 states, 2469 states have (on average 1.820980153908465) internal successors, (4496), 2472 states have internal predecessors, (4496), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2022-07-19 19:22:11,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2517 states to 2517 states and 4565 transitions. [2022-07-19 19:22:11,776 INFO L78 Accepts]: Start accepts. Automaton has 2517 states and 4565 transitions. Word has length 101 [2022-07-19 19:22:11,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:22:11,777 INFO L495 AbstractCegarLoop]: Abstraction has 2517 states and 4565 transitions. [2022-07-19 19:22:11,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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) [2022-07-19 19:22:11,778 INFO L276 IsEmpty]: Start isEmpty. Operand 2517 states and 4565 transitions. [2022-07-19 19:22:11,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-19 19:22:11,781 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:22:11,781 INFO L195 NwaCegarLoop]: 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] [2022-07-19 19:22:11,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 19:22:11,782 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:22:11,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:22:11,783 INFO L85 PathProgramCache]: Analyzing trace with hash -726765763, now seen corresponding path program 1 times [2022-07-19 19:22:11,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:22:11,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253488751] [2022-07-19 19:22:11,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:22:11,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:22:11,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:11,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:22:11,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:11,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 19:22:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:11,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 19:22:11,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:11,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 19:22:11,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:11,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:22:11,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:11,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:22:11,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:22:11,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253488751] [2022-07-19 19:22:11,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253488751] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:22:11,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:22:11,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:22:11,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621442773] [2022-07-19 19:22:11,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:22:11,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:22:11,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:22:11,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:22:11,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:22:11,915 INFO L87 Difference]: Start difference. First operand 2517 states and 4565 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-19 19:22:13,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:22:13,591 INFO L93 Difference]: Finished difference Result 3293 states and 5783 transitions. [2022-07-19 19:22:13,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:22:13,591 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-07-19 19:22:13,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:22:13,604 INFO L225 Difference]: With dead ends: 3293 [2022-07-19 19:22:13,605 INFO L226 Difference]: Without dead ends: 2910 [2022-07-19 19:22:13,607 INFO L412 NwaCegarLoop]: 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 [2022-07-19 19:22:13,608 INFO L413 NwaCegarLoop]: 4461 mSDtfsCounter, 4711 mSDsluCounter, 16808 mSDsCounter, 0 mSdLazyCounter, 1538 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4723 SdHoareTripleChecker+Valid, 21269 SdHoareTripleChecker+Invalid, 1604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 19:22:13,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4723 Valid, 21269 Invalid, 1604 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 1538 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 19:22:13,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2022-07-19 19:22:13,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 2698. [2022-07-19 19:22:13,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2698 states, 2629 states have (on average 1.8025865348041081) internal successors, (4739), 2633 states have internal predecessors, (4739), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2022-07-19 19:22:13,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2698 states to 2698 states and 4838 transitions. [2022-07-19 19:22:13,700 INFO L78 Accepts]: Start accepts. Automaton has 2698 states and 4838 transitions. Word has length 101 [2022-07-19 19:22:13,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:22:13,701 INFO L495 AbstractCegarLoop]: Abstraction has 2698 states and 4838 transitions. [2022-07-19 19:22:13,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-19 19:22:13,701 INFO L276 IsEmpty]: Start isEmpty. Operand 2698 states and 4838 transitions. [2022-07-19 19:22:13,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-19 19:22:13,703 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:22:13,703 INFO L195 NwaCegarLoop]: 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] [2022-07-19 19:22:13,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 19:22:13,704 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:22:13,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:22:13,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1689070587, now seen corresponding path program 1 times [2022-07-19 19:22:13,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:22:13,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047921055] [2022-07-19 19:22:13,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:22:13,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:22:13,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:13,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:22:13,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:13,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 19:22:13,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:13,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 19:22:13,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:13,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 19:22:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:13,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:22:13,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:13,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:22:13,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:22:13,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047921055] [2022-07-19 19:22:13,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047921055] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:22:13,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:22:13,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:22:13,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429670980] [2022-07-19 19:22:13,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:22:13,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:22:13,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:22:13,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:22:13,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:22:13,814 INFO L87 Difference]: Start difference. First operand 2698 states and 4838 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-19 19:22:15,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:22:15,429 INFO L93 Difference]: Finished difference Result 3966 states and 6824 transitions. [2022-07-19 19:22:15,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:22:15,430 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-07-19 19:22:15,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:22:15,447 INFO L225 Difference]: With dead ends: 3966 [2022-07-19 19:22:15,448 INFO L226 Difference]: Without dead ends: 3402 [2022-07-19 19:22:15,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:22:15,463 INFO L413 NwaCegarLoop]: 4449 mSDtfsCounter, 4705 mSDsluCounter, 16808 mSDsCounter, 0 mSdLazyCounter, 1527 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4717 SdHoareTripleChecker+Valid, 21257 SdHoareTripleChecker+Invalid, 1595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 19:22:15,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4717 Valid, 21257 Invalid, 1595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1527 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 19:22:15,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3402 states. [2022-07-19 19:22:15,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3402 to 3064. [2022-07-19 19:22:15,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3064 states, 2953 states have (on average 1.771757534710464) internal successors, (5232), 2959 states have internal predecessors, (5232), 75 states have call successors, (75), 30 states have call predecessors, (75), 34 states have return successors, (88), 78 states have call predecessors, (88), 75 states have call successors, (88) [2022-07-19 19:22:15,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3064 states to 3064 states and 5395 transitions. [2022-07-19 19:22:15,578 INFO L78 Accepts]: Start accepts. Automaton has 3064 states and 5395 transitions. Word has length 101 [2022-07-19 19:22:15,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:22:15,579 INFO L495 AbstractCegarLoop]: Abstraction has 3064 states and 5395 transitions. [2022-07-19 19:22:15,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-19 19:22:15,585 INFO L276 IsEmpty]: Start isEmpty. Operand 3064 states and 5395 transitions. [2022-07-19 19:22:15,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-19 19:22:15,588 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:22:15,588 INFO L195 NwaCegarLoop]: 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] [2022-07-19 19:22:15,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 19:22:15,589 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:22:15,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:22:15,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1039138759, now seen corresponding path program 1 times [2022-07-19 19:22:15,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:22:15,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661748630] [2022-07-19 19:22:15,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:22:15,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:22:15,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:15,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:22:15,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:15,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 19:22:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:15,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 19:22:15,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:15,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 19:22:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:15,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:22:15,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:15,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:22:15,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:22:15,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661748630] [2022-07-19 19:22:15,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661748630] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:22:15,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:22:15,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:22:15,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579628220] [2022-07-19 19:22:15,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:22:15,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:22:15,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:22:15,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:22:15,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:22:15,712 INFO L87 Difference]: Start difference. First operand 3064 states and 5395 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-19 19:22:17,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:22:17,304 INFO L93 Difference]: Finished difference Result 5270 states and 8833 transitions. [2022-07-19 19:22:17,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:22:17,305 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-07-19 19:22:17,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:22:17,327 INFO L225 Difference]: With dead ends: 5270 [2022-07-19 19:22:17,328 INFO L226 Difference]: Without dead ends: 4340 [2022-07-19 19:22:17,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:22:17,336 INFO L413 NwaCegarLoop]: 4444 mSDtfsCounter, 4704 mSDsluCounter, 16808 mSDsCounter, 0 mSdLazyCounter, 1519 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4716 SdHoareTripleChecker+Valid, 21252 SdHoareTripleChecker+Invalid, 1587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 19:22:17,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4716 Valid, 21252 Invalid, 1587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1519 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 19:22:17,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4340 states. [2022-07-19 19:22:17,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4340 to 3797. [2022-07-19 19:22:17,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3797 states, 3602 states have (on average 1.7262631871182677) internal successors, (6218), 3612 states have internal predecessors, (6218), 131 states have call successors, (131), 54 states have call predecessors, (131), 62 states have return successors, (166), 138 states have call predecessors, (166), 131 states have call successors, (166) [2022-07-19 19:22:17,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3797 states to 3797 states and 6515 transitions. [2022-07-19 19:22:17,501 INFO L78 Accepts]: Start accepts. Automaton has 3797 states and 6515 transitions. Word has length 101 [2022-07-19 19:22:17,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:22:17,501 INFO L495 AbstractCegarLoop]: Abstraction has 3797 states and 6515 transitions. [2022-07-19 19:22:17,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-19 19:22:17,502 INFO L276 IsEmpty]: Start isEmpty. Operand 3797 states and 6515 transitions. [2022-07-19 19:22:17,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-19 19:22:17,504 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:22:17,504 INFO L195 NwaCegarLoop]: 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] [2022-07-19 19:22:17,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 19:22:17,505 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:22:17,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:22:17,506 INFO L85 PathProgramCache]: Analyzing trace with hash -2096976837, now seen corresponding path program 1 times [2022-07-19 19:22:17,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:22:17,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911005049] [2022-07-19 19:22:17,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:22:17,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:22:17,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:17,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:22:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:17,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 19:22:17,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:17,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 19:22:17,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:17,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 19:22:17,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:17,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:22:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:17,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:22:17,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:22:17,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911005049] [2022-07-19 19:22:17,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911005049] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:22:17,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:22:17,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:22:17,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737723876] [2022-07-19 19:22:17,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:22:17,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:22:17,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:22:17,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:22:17,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:22:17,626 INFO L87 Difference]: Start difference. First operand 3797 states and 6515 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-19 19:22:19,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:22:19,234 INFO L93 Difference]: Finished difference Result 7877 states and 12867 transitions. [2022-07-19 19:22:19,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:22:19,234 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-07-19 19:22:19,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:22:19,269 INFO L225 Difference]: With dead ends: 7877 [2022-07-19 19:22:19,269 INFO L226 Difference]: Without dead ends: 6214 [2022-07-19 19:22:19,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:22:19,280 INFO L413 NwaCegarLoop]: 4439 mSDtfsCounter, 4703 mSDsluCounter, 16808 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4715 SdHoareTripleChecker+Valid, 21247 SdHoareTripleChecker+Invalid, 1579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 19:22:19,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4715 Valid, 21247 Invalid, 1579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1511 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 19:22:19,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6214 states. [2022-07-19 19:22:19,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6214 to 5270. [2022-07-19 19:22:19,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5270 states, 4907 states have (on average 1.6710821275728551) internal successors, (8200), 4925 states have internal predecessors, (8200), 243 states have call successors, (243), 102 states have call predecessors, (243), 118 states have return successors, (340), 258 states have call predecessors, (340), 243 states have call successors, (340) [2022-07-19 19:22:19,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5270 states to 5270 states and 8783 transitions. [2022-07-19 19:22:19,554 INFO L78 Accepts]: Start accepts. Automaton has 5270 states and 8783 transitions. Word has length 101 [2022-07-19 19:22:19,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:22:19,554 INFO L495 AbstractCegarLoop]: Abstraction has 5270 states and 8783 transitions. [2022-07-19 19:22:19,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-19 19:22:19,556 INFO L276 IsEmpty]: Start isEmpty. Operand 5270 states and 8783 transitions. [2022-07-19 19:22:19,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-19 19:22:19,561 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:22:19,562 INFO L195 NwaCegarLoop]: 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] [2022-07-19 19:22:19,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 19:22:19,562 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:22:19,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:22:19,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1055487993, now seen corresponding path program 1 times [2022-07-19 19:22:19,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:22:19,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894835135] [2022-07-19 19:22:19,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:22:19,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:22:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:19,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:22:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:19,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 19:22:19,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:19,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 19:22:19,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:19,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 19:22:19,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:19,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:22:19,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:19,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:22:19,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:22:19,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894835135] [2022-07-19 19:22:19,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894835135] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:22:19,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:22:19,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:22:19,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349012023] [2022-07-19 19:22:19,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:22:19,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:22:19,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:22:19,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:22:19,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:22:19,694 INFO L87 Difference]: Start difference. First operand 5270 states and 8783 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-19 19:22:21,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:22:21,476 INFO L93 Difference]: Finished difference Result 14356 states and 22887 transitions. [2022-07-19 19:22:21,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 19:22:21,476 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-07-19 19:22:21,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:22:21,533 INFO L225 Difference]: With dead ends: 14356 [2022-07-19 19:22:21,534 INFO L226 Difference]: Without dead ends: 11220 [2022-07-19 19:22:21,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 19:22:21,552 INFO L413 NwaCegarLoop]: 4319 mSDtfsCounter, 4963 mSDsluCounter, 16488 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4981 SdHoareTripleChecker+Valid, 20807 SdHoareTripleChecker+Invalid, 1437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 19:22:21,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4981 Valid, 20807 Invalid, 1437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1344 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 19:22:21,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11220 states. [2022-07-19 19:22:21,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11220 to 8183. [2022-07-19 19:22:21,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8183 states, 7500 states have (on average 1.6205333333333334) internal successors, (12154), 7534 states have internal predecessors, (12154), 451 states have call successors, (451), 198 states have call predecessors, (451), 230 states have return successors, (726), 482 states have call predecessors, (726), 451 states have call successors, (726) [2022-07-19 19:22:21,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8183 states to 8183 states and 13331 transitions. [2022-07-19 19:22:21,938 INFO L78 Accepts]: Start accepts. Automaton has 8183 states and 13331 transitions. Word has length 101 [2022-07-19 19:22:21,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:22:21,939 INFO L495 AbstractCegarLoop]: Abstraction has 8183 states and 13331 transitions. [2022-07-19 19:22:21,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-19 19:22:21,939 INFO L276 IsEmpty]: Start isEmpty. Operand 8183 states and 13331 transitions. [2022-07-19 19:22:21,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-19 19:22:21,945 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:22:21,945 INFO L195 NwaCegarLoop]: 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] [2022-07-19 19:22:21,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 19:22:21,945 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:22:21,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:22:21,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1295727739, now seen corresponding path program 1 times [2022-07-19 19:22:21,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:22:21,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152113923] [2022-07-19 19:22:21,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:22:21,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:22:21,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:21,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:22:21,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:21,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 19:22:21,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:22,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 19:22:22,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:22,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 19:22:22,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:22,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:22:22,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:22,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:22:22,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:22:22,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152113923] [2022-07-19 19:22:22,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152113923] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:22:22,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:22:22,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:22:22,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740940585] [2022-07-19 19:22:22,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:22:22,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:22:22,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:22:22,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:22:22,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:22:22,040 INFO L87 Difference]: Start difference. First operand 8183 states and 13331 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-19 19:22:24,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:22:24,109 INFO L93 Difference]: Finished difference Result 25523 states and 40429 transitions. [2022-07-19 19:22:24,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 19:22:24,109 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-07-19 19:22:24,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:22:24,192 INFO L225 Difference]: With dead ends: 25523 [2022-07-19 19:22:24,192 INFO L226 Difference]: Without dead ends: 19474 [2022-07-19 19:22:24,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 19:22:24,226 INFO L413 NwaCegarLoop]: 4502 mSDtfsCounter, 4743 mSDsluCounter, 16797 mSDsCounter, 0 mSdLazyCounter, 1721 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4754 SdHoareTripleChecker+Valid, 21299 SdHoareTripleChecker+Invalid, 1791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 19:22:24,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4754 Valid, 21299 Invalid, 1791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1721 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 19:22:24,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19474 states. [2022-07-19 19:22:25,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19474 to 13832. [2022-07-19 19:22:25,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13832 states, 12525 states have (on average 1.582435129740519) internal successors, (19820), 12591 states have internal predecessors, (19820), 851 states have call successors, (851), 390 states have call predecessors, (851), 454 states have return successors, (1644), 914 states have call predecessors, (1644), 851 states have call successors, (1644) [2022-07-19 19:22:25,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13832 states to 13832 states and 22315 transitions. [2022-07-19 19:22:25,096 INFO L78 Accepts]: Start accepts. Automaton has 13832 states and 22315 transitions. Word has length 101 [2022-07-19 19:22:25,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:22:25,096 INFO L495 AbstractCegarLoop]: Abstraction has 13832 states and 22315 transitions. [2022-07-19 19:22:25,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-19 19:22:25,097 INFO L276 IsEmpty]: Start isEmpty. Operand 13832 states and 22315 transitions. [2022-07-19 19:22:25,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-19 19:22:25,109 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:22:25,109 INFO L195 NwaCegarLoop]: 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] [2022-07-19 19:22:25,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 19:22:25,109 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:22:25,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:22:25,110 INFO L85 PathProgramCache]: Analyzing trace with hash 2134761401, now seen corresponding path program 1 times [2022-07-19 19:22:25,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:22:25,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057919021] [2022-07-19 19:22:25,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:22:25,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:22:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:25,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:22:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:25,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 19:22:25,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:25,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 19:22:25,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:25,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 19:22:25,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:25,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:22:25,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:25,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:22:25,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:22:25,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057919021] [2022-07-19 19:22:25,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057919021] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:22:25,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:22:25,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:22:25,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165837390] [2022-07-19 19:22:25,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:22:25,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:22:25,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:22:25,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:22:25,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:22:25,214 INFO L87 Difference]: Start difference. First operand 13832 states and 22315 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-19 19:22:28,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:22:28,051 INFO L93 Difference]: Finished difference Result 46786 states and 74419 transitions. [2022-07-19 19:22:28,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 19:22:28,052 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-07-19 19:22:28,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:22:28,206 INFO L225 Difference]: With dead ends: 46786 [2022-07-19 19:22:28,206 INFO L226 Difference]: Without dead ends: 35088 [2022-07-19 19:22:28,259 INFO L412 NwaCegarLoop]: 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 [2022-07-19 19:22:28,260 INFO L413 NwaCegarLoop]: 4422 mSDtfsCounter, 4835 mSDsluCounter, 16800 mSDsCounter, 0 mSdLazyCounter, 1480 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4853 SdHoareTripleChecker+Valid, 21222 SdHoareTripleChecker+Invalid, 1553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 19:22:28,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4853 Valid, 21222 Invalid, 1553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1480 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 19:22:28,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35088 states. [2022-07-19 19:22:29,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35088 to 25257. [2022-07-19 19:22:29,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25257 states, 22734 states have (on average 1.5588105920647488) internal successors, (35438), 22864 states have internal predecessors, (35438), 1619 states have call successors, (1619), 774 states have call predecessors, (1619), 902 states have return successors, (3934), 1746 states have call predecessors, (3934), 1619 states have call successors, (3934) [2022-07-19 19:22:29,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25257 states to 25257 states and 40991 transitions. [2022-07-19 19:22:29,582 INFO L78 Accepts]: Start accepts. Automaton has 25257 states and 40991 transitions. Word has length 101 [2022-07-19 19:22:29,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:22:29,582 INFO L495 AbstractCegarLoop]: Abstraction has 25257 states and 40991 transitions. [2022-07-19 19:22:29,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-19 19:22:29,583 INFO L276 IsEmpty]: Start isEmpty. Operand 25257 states and 40991 transitions. [2022-07-19 19:22:29,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-19 19:22:29,602 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:22:29,602 INFO L195 NwaCegarLoop]: 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] [2022-07-19 19:22:29,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 19:22:29,602 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:22:29,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:22:29,603 INFO L85 PathProgramCache]: Analyzing trace with hash -2133140293, now seen corresponding path program 1 times [2022-07-19 19:22:29,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:22:29,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683078647] [2022-07-19 19:22:29,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:22:29,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:22:29,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:29,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:22:29,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:29,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 19:22:29,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:29,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 19:22:29,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:29,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 19:22:29,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:29,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:22:29,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:29,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:22:29,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:22:29,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683078647] [2022-07-19 19:22:29,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683078647] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:22:29,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:22:29,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:22:29,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415240574] [2022-07-19 19:22:29,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:22:29,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:22:29,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:22:29,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:22:29,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:22:29,689 INFO L87 Difference]: Start difference. First operand 25257 states and 40991 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-19 19:22:34,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:22:34,177 INFO L93 Difference]: Finished difference Result 88545 states and 143161 transitions. [2022-07-19 19:22:34,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 19:22:34,178 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-07-19 19:22:34,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:22:34,499 INFO L225 Difference]: With dead ends: 88545 [2022-07-19 19:22:34,499 INFO L226 Difference]: Without dead ends: 65422 [2022-07-19 19:22:34,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 19:22:34,588 INFO L413 NwaCegarLoop]: 4415 mSDtfsCounter, 4798 mSDsluCounter, 16800 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4816 SdHoareTripleChecker+Valid, 21215 SdHoareTripleChecker+Invalid, 1545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 19:22:34,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4816 Valid, 21215 Invalid, 1545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 19:22:34,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65422 states. [2022-07-19 19:22:37,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65422 to 48042. [2022-07-19 19:22:37,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48042 states, 43151 states have (on average 1.5465690250515631) internal successors, (66736), 43409 states have internal predecessors, (66736), 3091 states have call successors, (3091), 1542 states have call predecessors, (3091), 1798 states have return successors, (9908), 3346 states have call predecessors, (9908), 3091 states have call successors, (9908) [2022-07-19 19:22:37,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48042 states to 48042 states and 79735 transitions. [2022-07-19 19:22:37,489 INFO L78 Accepts]: Start accepts. Automaton has 48042 states and 79735 transitions. Word has length 101 [2022-07-19 19:22:37,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:22:37,489 INFO L495 AbstractCegarLoop]: Abstraction has 48042 states and 79735 transitions. [2022-07-19 19:22:37,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-19 19:22:37,490 INFO L276 IsEmpty]: Start isEmpty. Operand 48042 states and 79735 transitions. [2022-07-19 19:22:37,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-19 19:22:37,524 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:22:37,524 INFO L195 NwaCegarLoop]: 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] [2022-07-19 19:22:37,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 19:22:37,525 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:22:37,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:22:37,526 INFO L85 PathProgramCache]: Analyzing trace with hash 84490105, now seen corresponding path program 1 times [2022-07-19 19:22:37,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:22:37,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814193297] [2022-07-19 19:22:37,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:22:37,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:22:37,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:37,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:22:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:37,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 19:22:37,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:37,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 19:22:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:37,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 19:22:37,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:37,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:22:37,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:37,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:22:37,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:22:37,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814193297] [2022-07-19 19:22:37,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814193297] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:22:37,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:22:37,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:22:37,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888620954] [2022-07-19 19:22:37,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:22:37,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:22:37,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:22:37,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:22:37,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:22:37,632 INFO L87 Difference]: Start difference. First operand 48042 states and 79735 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-19 19:22:41,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:22:41,503 INFO L93 Difference]: Finished difference Result 105804 states and 179852 transitions. [2022-07-19 19:22:41,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 19:22:41,503 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-07-19 19:22:41,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:22:41,796 INFO L225 Difference]: With dead ends: 105804 [2022-07-19 19:22:41,796 INFO L226 Difference]: Without dead ends: 59896 [2022-07-19 19:22:41,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 19:22:41,929 INFO L413 NwaCegarLoop]: 4242 mSDtfsCounter, 4508 mSDsluCounter, 16313 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4521 SdHoareTripleChecker+Valid, 20555 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 19:22:41,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4521 Valid, 20555 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 19:22:41,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59896 states. [2022-07-19 19:22:44,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59896 to 48042. [2022-07-19 19:22:44,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48042 states, 43151 states have (on average 1.5406131955226994) internal successors, (66479), 43409 states have internal predecessors, (66479), 3091 states have call successors, (3091), 1542 states have call predecessors, (3091), 1798 states have return successors, (9908), 3346 states have call predecessors, (9908), 3091 states have call successors, (9908) [2022-07-19 19:22:44,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48042 states to 48042 states and 79478 transitions. [2022-07-19 19:22:44,844 INFO L78 Accepts]: Start accepts. Automaton has 48042 states and 79478 transitions. Word has length 101 [2022-07-19 19:22:44,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:22:44,844 INFO L495 AbstractCegarLoop]: Abstraction has 48042 states and 79478 transitions. [2022-07-19 19:22:44,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-19 19:22:44,845 INFO L276 IsEmpty]: Start isEmpty. Operand 48042 states and 79478 transitions. [2022-07-19 19:22:44,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-19 19:22:44,876 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:22:44,876 INFO L195 NwaCegarLoop]: 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] [2022-07-19 19:22:44,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 19:22:44,877 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:22:44,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:22:44,877 INFO L85 PathProgramCache]: Analyzing trace with hash 971712951, now seen corresponding path program 1 times [2022-07-19 19:22:44,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:22:44,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969485210] [2022-07-19 19:22:44,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:22:44,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:22:44,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:44,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:22:44,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:44,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 19:22:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:44,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 19:22:44,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:44,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 19:22:44,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:44,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:22:44,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:44,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:22:44,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:22:44,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969485210] [2022-07-19 19:22:44,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969485210] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:22:44,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:22:44,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 19:22:44,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847543518] [2022-07-19 19:22:44,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:22:44,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 19:22:44,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:22:44,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 19:22:44,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 19:22:44,960 INFO L87 Difference]: Start difference. First operand 48042 states and 79478 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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) [2022-07-19 19:22:50,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:22:50,751 INFO L93 Difference]: Finished difference Result 133917 states and 218160 transitions. [2022-07-19 19:22:50,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 19:22:50,752 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2022-07-19 19:22:50,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:22:51,099 INFO L225 Difference]: With dead ends: 133917 [2022-07-19 19:22:51,099 INFO L226 Difference]: Without dead ends: 88010 [2022-07-19 19:22:51,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-19 19:22:51,421 INFO L413 NwaCegarLoop]: 4560 mSDtfsCounter, 4915 mSDsluCounter, 12498 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4946 SdHoareTripleChecker+Valid, 17058 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 19:22:51,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4946 Valid, 17058 Invalid, 1289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 19:22:51,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88010 states. [2022-07-19 19:22:55,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88010 to 70805. [2022-07-19 19:22:55,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70805 states, 63397 states have (on average 1.525561146426487) internal successors, (96716), 63912 states have internal predecessors, (96716), 4706 states have call successors, (4706), 2316 states have call predecessors, (4706), 2700 states have return successors, (13711), 4832 states have call predecessors, (13711), 4706 states have call successors, (13711) [2022-07-19 19:22:55,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70805 states to 70805 states and 115133 transitions. [2022-07-19 19:22:55,349 INFO L78 Accepts]: Start accepts. Automaton has 70805 states and 115133 transitions. Word has length 101 [2022-07-19 19:22:55,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:22:55,349 INFO L495 AbstractCegarLoop]: Abstraction has 70805 states and 115133 transitions. [2022-07-19 19:22:55,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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) [2022-07-19 19:22:55,350 INFO L276 IsEmpty]: Start isEmpty. Operand 70805 states and 115133 transitions. [2022-07-19 19:22:55,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-19 19:22:55,724 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:22:55,724 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:22:55,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 19:22:55,724 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:22:55,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:22:55,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1967377923, now seen corresponding path program 1 times [2022-07-19 19:22:55,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:22:55,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106914671] [2022-07-19 19:22:55,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:22:55,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:22:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:55,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:22:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:55,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 19:22:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:55,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 19:22:55,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:55,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 19:22:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:55,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 19:22:55,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:55,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 19:22:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:55,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 19:22:55,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:55,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-19 19:22:55,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:55,856 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-19 19:22:55,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:22:55,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106914671] [2022-07-19 19:22:55,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106914671] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 19:22:55,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174496314] [2022-07-19 19:22:55,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:22:55,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 19:22:55,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 19:22:55,859 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 19:22:55,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 19:22:55,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:22:56,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 19:22:56,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 19:22:56,122 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-19 19:22:56,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 19:22:56,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174496314] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:22:56,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 19:22:56,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-19 19:22:56,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586659243] [2022-07-19 19:22:56,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:22:56,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 19:22:56,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:22:56,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 19:22:56,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 19:22:56,125 INFO L87 Difference]: Start difference. First operand 70805 states and 115133 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 19:23:02,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:23:02,437 INFO L93 Difference]: Finished difference Result 206790 states and 337441 transitions. [2022-07-19 19:23:02,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 19:23:02,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 164 [2022-07-19 19:23:02,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:23:02,929 INFO L225 Difference]: With dead ends: 206790 [2022-07-19 19:23:02,929 INFO L226 Difference]: Without dead ends: 138120 [2022-07-19 19:23:03,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 19:23:03,077 INFO L413 NwaCegarLoop]: 4274 mSDtfsCounter, 4192 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4192 SdHoareTripleChecker+Valid, 4549 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 19:23:03,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4192 Valid, 4549 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 19:23:03,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138120 states.