./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.04.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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_label46+token_ring.04.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 6b2ea308b98ca1eae9030e7a6017fcc5084f411cde9353ed6e1419a4046239c4 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 19:39:37,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 19:39:37,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 19:39:37,798 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 19:39:37,799 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 19:39:37,800 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 19:39:37,802 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 19:39:37,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 19:39:37,808 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 19:39:37,813 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 19:39:37,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 19:39:37,816 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 19:39:37,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 19:39:37,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 19:39:37,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 19:39:37,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 19:39:37,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 19:39:37,825 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 19:39:37,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 19:39:37,832 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 19:39:37,834 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 19:39:37,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 19:39:37,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 19:39:37,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 19:39:37,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 19:39:37,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 19:39:37,846 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 19:39:37,846 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 19:39:37,847 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 19:39:37,848 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 19:39:37,849 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 19:39:37,849 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 19:39:37,850 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 19:39:37,851 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 19:39:37,852 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 19:39:37,853 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 19:39:37,853 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 19:39:37,853 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 19:39:37,854 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 19:39:37,854 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 19:39:37,856 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 19:39:37,857 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 19:39:37,858 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 19:39:37,885 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 19:39:37,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 19:39:37,886 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 19:39:37,887 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 19:39:37,887 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 19:39:37,888 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 19:39:37,888 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 19:39:37,888 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 19:39:37,889 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 19:39:37,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 19:39:37,890 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 19:39:37,890 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 19:39:37,890 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 19:39:37,890 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 19:39:37,891 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 19:39:37,891 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 19:39:37,891 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 19:39:37,891 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 19:39:37,891 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 19:39:37,892 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 19:39:37,892 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 19:39:37,892 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 19:39:37,892 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 19:39:37,893 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 19:39:37,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 19:39:37,893 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 19:39:37,893 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 19:39:37,894 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 19:39:37,894 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 19:39:37,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 19:39:37,895 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 19:39:37,895 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 19:39:37,895 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 19:39:37,895 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b2ea308b98ca1eae9030e7a6017fcc5084f411cde9353ed6e1419a4046239c4 [2022-07-22 19:39:38,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 19:39:38,146 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 19:39:38,148 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 19:39:38,149 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 19:39:38,150 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 19:39:38,151 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label46+token_ring.04.cil-1.c [2022-07-22 19:39:38,224 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e775c860/43119e12aba54df79d51c4695675052e/FLAG1008e436b [2022-07-22 19:39:39,013 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 19:39:39,014 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.04.cil-1.c [2022-07-22 19:39:39,058 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e775c860/43119e12aba54df79d51c4695675052e/FLAG1008e436b [2022-07-22 19:39:39,512 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e775c860/43119e12aba54df79d51c4695675052e [2022-07-22 19:39:39,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 19:39:39,514 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 19:39:39,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 19:39:39,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 19:39:39,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 19:39:39,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 07:39:39" (1/1) ... [2022-07-22 19:39:39,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64aa9c2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:39:39, skipping insertion in model container [2022-07-22 19:39:39,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 07:39:39" (1/1) ... [2022-07-22 19:39:39,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 19:39:39,715 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 19:39:41,292 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_label46+token_ring.04.cil-1.c[382357,382370] [2022-07-22 19:39:41,311 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_label46+token_ring.04.cil-1.c[383339,383352] [2022-07-22 19:39:41,469 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 19:39:41,482 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 19:39:42,228 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_label46+token_ring.04.cil-1.c[382357,382370] [2022-07-22 19:39:42,232 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_label46+token_ring.04.cil-1.c[383339,383352] [2022-07-22 19:39:42,254 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 19:39:42,336 INFO L208 MainTranslator]: Completed translation [2022-07-22 19:39:42,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:39:42 WrapperNode [2022-07-22 19:39:42,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 19:39:42,338 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 19:39:42,338 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 19:39:42,338 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 19:39:42,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:39:42" (1/1) ... [2022-07-22 19:39:42,450 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:39:42" (1/1) ... [2022-07-22 19:39:42,756 INFO L137 Inliner]: procedures = 52, calls = 53, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 12735 [2022-07-22 19:39:42,757 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 19:39:42,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 19:39:42,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 19:39:42,758 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 19:39:42,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:39:42" (1/1) ... [2022-07-22 19:39:42,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:39:42" (1/1) ... [2022-07-22 19:39:42,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:39:42" (1/1) ... [2022-07-22 19:39:42,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:39:42" (1/1) ... [2022-07-22 19:39:43,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:39:42" (1/1) ... [2022-07-22 19:39:43,319 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:39:42" (1/1) ... [2022-07-22 19:39:43,393 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:39:42" (1/1) ... [2022-07-22 19:39:43,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 19:39:43,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 19:39:43,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 19:39:43,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 19:39:43,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:39:42" (1/1) ... [2022-07-22 19:39:43,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 19:39:43,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:39:43,503 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) [2022-07-22 19:39:43,524 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 [2022-07-22 19:39:43,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 19:39:43,547 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-22 19:39:43,547 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-22 19:39:43,547 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-22 19:39:43,547 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-22 19:39:43,547 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-22 19:39:43,547 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-22 19:39:43,547 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-22 19:39:43,548 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-22 19:39:43,548 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-22 19:39:43,548 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-22 19:39:43,548 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-22 19:39:43,548 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-22 19:39:43,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 19:39:43,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 19:39:43,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 19:39:43,681 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 19:39:43,683 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 19:39:49,508 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 19:39:49,539 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 19:39:49,540 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-07-22 19:39:49,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:39:49 BoogieIcfgContainer [2022-07-22 19:39:49,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 19:39:49,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 19:39:49,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 19:39:49,549 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 19:39:49,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 07:39:39" (1/3) ... [2022-07-22 19:39:49,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16171d1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 07:39:49, skipping insertion in model container [2022-07-22 19:39:49,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:39:42" (2/3) ... [2022-07-22 19:39:49,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16171d1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 07:39:49, skipping insertion in model container [2022-07-22 19:39:49,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:39:49" (3/3) ... [2022-07-22 19:39:49,553 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.04.cil-1.c [2022-07-22 19:39:49,565 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 19:39:49,566 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 19:39:49,659 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 19:39:49,665 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@3d68ea00, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@578cde45 [2022-07-22 19:39:49,665 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 19:39:49,677 INFO L276 IsEmpty]: Start isEmpty. Operand has 2365 states, 2338 states have (on average 1.8541488451668093) internal successors, (4335), 2341 states have internal predecessors, (4335), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-07-22 19:39:49,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-22 19:39:49,691 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:39:49,692 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] [2022-07-22 19:39:49,692 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:39:49,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:39:49,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1353629608, now seen corresponding path program 1 times [2022-07-22 19:39:49,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:39:49,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502793471] [2022-07-22 19:39:49,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:39:49,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:39:49,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:49,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:39:49,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:49,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 19:39:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:49,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 19:39:50,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:50,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 19:39:50,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:50,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 19:39:50,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:50,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:39:50,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:39:50,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502793471] [2022-07-22 19:39:50,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502793471] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:39:50,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:39:50,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 19:39:50,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591316536] [2022-07-22 19:39:50,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:39:50,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 19:39:50,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:39:50,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 19:39:50,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 19:39:50,067 INFO L87 Difference]: Start difference. First operand has 2365 states, 2338 states have (on average 1.8541488451668093) internal successors, (4335), 2341 states have internal predecessors, (4335), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 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) [2022-07-22 19:39:50,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:39:50,912 INFO L93 Difference]: Finished difference Result 4778 states and 8824 transitions. [2022-07-22 19:39:50,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 19:39:50,915 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 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 90 [2022-07-22 19:39:50,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:39:50,936 INFO L225 Difference]: With dead ends: 4778 [2022-07-22 19:39:50,936 INFO L226 Difference]: Without dead ends: 2352 [2022-07-22 19:39:50,945 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 [2022-07-22 19:39:50,948 INFO L413 NwaCegarLoop]: 4315 mSDtfsCounter, 434 mSDsluCounter, 12257 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 16572 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 19:39:50,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 16572 Invalid, 343 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [44 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 19:39:50,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2022-07-22 19:39:51,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 2298. [2022-07-22 19:39:51,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2298 states, 2272 states have (on average 1.8433098591549295) internal successors, (4188), 2274 states have internal predecessors, (4188), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-07-22 19:39:51,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 4224 transitions. [2022-07-22 19:39:51,063 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 4224 transitions. Word has length 90 [2022-07-22 19:39:51,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:39:51,063 INFO L495 AbstractCegarLoop]: Abstraction has 2298 states and 4224 transitions. [2022-07-22 19:39:51,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 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) [2022-07-22 19:39:51,064 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 4224 transitions. [2022-07-22 19:39:51,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-22 19:39:51,067 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:39:51,068 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] [2022-07-22 19:39:51,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 19:39:51,068 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:39:51,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:39:51,069 INFO L85 PathProgramCache]: Analyzing trace with hash -295791530, now seen corresponding path program 1 times [2022-07-22 19:39:51,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:39:51,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496532559] [2022-07-22 19:39:51,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:39:51,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:39:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:51,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:39:51,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:51,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 19:39:51,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:51,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 19:39:51,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:51,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 19:39:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:51,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 19:39:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:51,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:39:51,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:39:51,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496532559] [2022-07-22 19:39:51,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496532559] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:39:51,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:39:51,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 19:39:51,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778164442] [2022-07-22 19:39:51,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:39:51,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 19:39:51,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:39:51,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 19:39:51,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 19:39:51,226 INFO L87 Difference]: Start difference. First operand 2298 states and 4224 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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) [2022-07-22 19:39:52,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:39:52,414 INFO L93 Difference]: Finished difference Result 2738 states and 4911 transitions. [2022-07-22 19:39:52,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 19:39:52,414 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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 90 [2022-07-22 19:39:52,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:39:52,425 INFO L225 Difference]: With dead ends: 2738 [2022-07-22 19:39:52,426 INFO L226 Difference]: Without dead ends: 2573 [2022-07-22 19:39:52,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-22 19:39:52,428 INFO L413 NwaCegarLoop]: 4266 mSDtfsCounter, 4590 mSDsluCounter, 12314 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4601 SdHoareTripleChecker+Valid, 16580 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 19:39:52,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4601 Valid, 16580 Invalid, 931 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 19:39:52,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2573 states. [2022-07-22 19:39:52,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2573 to 2466. [2022-07-22 19:39:52,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 2420 states have (on average 1.824793388429752) internal successors, (4416), 2423 states have internal predecessors, (4416), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2022-07-22 19:39:52,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 4481 transitions. [2022-07-22 19:39:52,506 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 4481 transitions. Word has length 90 [2022-07-22 19:39:52,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:39:52,507 INFO L495 AbstractCegarLoop]: Abstraction has 2466 states and 4481 transitions. [2022-07-22 19:39:52,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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) [2022-07-22 19:39:52,507 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 4481 transitions. [2022-07-22 19:39:52,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-22 19:39:52,512 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:39:52,512 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] [2022-07-22 19:39:52,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 19:39:52,513 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:39:52,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:39:52,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1470450982, now seen corresponding path program 1 times [2022-07-22 19:39:52,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:39:52,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929645094] [2022-07-22 19:39:52,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:39:52,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:39:52,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:52,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:39:52,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:52,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 19:39:52,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:52,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 19:39:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:52,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 19:39:52,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:52,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 19:39:52,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:52,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:39:52,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:39:52,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929645094] [2022-07-22 19:39:52,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929645094] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:39:52,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:39:52,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:39:52,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469546859] [2022-07-22 19:39:52,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:39:52,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:39:52,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:39:52,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:39:52,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:39:52,681 INFO L87 Difference]: Start difference. First operand 2466 states and 4481 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-22 19:39:53,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:39:53,962 INFO L93 Difference]: Finished difference Result 3131 states and 5513 transitions. [2022-07-22 19:39:53,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:39:53,963 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-22 19:39:53,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:39:53,976 INFO L225 Difference]: With dead ends: 3131 [2022-07-22 19:39:53,977 INFO L226 Difference]: Without dead ends: 2798 [2022-07-22 19:39:53,979 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 [2022-07-22 19:39:53,980 INFO L413 NwaCegarLoop]: 4389 mSDtfsCounter, 4588 mSDsluCounter, 16680 mSDsCounter, 0 mSdLazyCounter, 1311 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4599 SdHoareTripleChecker+Valid, 21069 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 19:39:53,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4599 Valid, 21069 Invalid, 1371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1311 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 19:39:53,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2022-07-22 19:39:54,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2623. [2022-07-22 19:39:54,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2623 states, 2557 states have (on average 1.8075870160344154) internal successors, (4622), 2561 states have internal predecessors, (4622), 44 states have call successors, (44), 18 states have call predecessors, (44), 20 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2022-07-22 19:39:54,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2623 states to 2623 states and 4715 transitions. [2022-07-22 19:39:54,055 INFO L78 Accepts]: Start accepts. Automaton has 2623 states and 4715 transitions. Word has length 90 [2022-07-22 19:39:54,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:39:54,056 INFO L495 AbstractCegarLoop]: Abstraction has 2623 states and 4715 transitions. [2022-07-22 19:39:54,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-22 19:39:54,057 INFO L276 IsEmpty]: Start isEmpty. Operand 2623 states and 4715 transitions. [2022-07-22 19:39:54,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-22 19:39:54,058 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:39:54,058 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] [2022-07-22 19:39:54,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 19:39:54,059 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:39:54,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:39:54,059 INFO L85 PathProgramCache]: Analyzing trace with hash -583228136, now seen corresponding path program 1 times [2022-07-22 19:39:54,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:39:54,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284941329] [2022-07-22 19:39:54,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:39:54,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:39:54,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:54,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:39:54,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:54,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 19:39:54,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:54,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 19:39:54,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:54,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 19:39:54,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:54,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 19:39:54,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:54,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:39:54,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:39:54,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284941329] [2022-07-22 19:39:54,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284941329] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:39:54,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:39:54,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:39:54,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328971435] [2022-07-22 19:39:54,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:39:54,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:39:54,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:39:54,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:39:54,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:39:54,193 INFO L87 Difference]: Start difference. First operand 2623 states and 4715 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-22 19:39:55,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:39:55,496 INFO L93 Difference]: Finished difference Result 3709 states and 6395 transitions. [2022-07-22 19:39:55,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:39:55,497 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-22 19:39:55,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:39:55,512 INFO L225 Difference]: With dead ends: 3709 [2022-07-22 19:39:55,513 INFO L226 Difference]: Without dead ends: 3219 [2022-07-22 19:39:55,517 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 [2022-07-22 19:39:55,526 INFO L413 NwaCegarLoop]: 4278 mSDtfsCounter, 4633 mSDsluCounter, 16410 mSDsCounter, 0 mSdLazyCounter, 1171 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4644 SdHoareTripleChecker+Valid, 20688 SdHoareTripleChecker+Invalid, 1254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 19:39:55,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4644 Valid, 20688 Invalid, 1254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1171 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 19:39:55,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2022-07-22 19:39:55,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 2938. [2022-07-22 19:39:55,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2938 states, 2832 states have (on average 1.7778954802259888) internal successors, (5035), 2838 states have internal predecessors, (5035), 70 states have call successors, (70), 30 states have call predecessors, (70), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2022-07-22 19:39:55,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2938 states to 2938 states and 5188 transitions. [2022-07-22 19:39:55,648 INFO L78 Accepts]: Start accepts. Automaton has 2938 states and 5188 transitions. Word has length 90 [2022-07-22 19:39:55,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:39:55,649 INFO L495 AbstractCegarLoop]: Abstraction has 2938 states and 5188 transitions. [2022-07-22 19:39:55,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-22 19:39:55,655 INFO L276 IsEmpty]: Start isEmpty. Operand 2938 states and 5188 transitions. [2022-07-22 19:39:55,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-22 19:39:55,661 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:39:55,661 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] [2022-07-22 19:39:55,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 19:39:55,662 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:39:55,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:39:55,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1800696602, now seen corresponding path program 1 times [2022-07-22 19:39:55,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:39:55,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424739679] [2022-07-22 19:39:55,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:39:55,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:39:55,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:55,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:39:55,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:55,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 19:39:55,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:55,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 19:39:55,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:55,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 19:39:55,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:55,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 19:39:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:55,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:39:55,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:39:55,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424739679] [2022-07-22 19:39:55,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424739679] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:39:55,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:39:55,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:39:55,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997779076] [2022-07-22 19:39:55,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:39:55,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:39:55,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:39:55,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:39:55,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:39:55,784 INFO L87 Difference]: Start difference. First operand 2938 states and 5188 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-22 19:39:57,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:39:57,127 INFO L93 Difference]: Finished difference Result 4824 states and 8092 transitions. [2022-07-22 19:39:57,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:39:57,128 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-22 19:39:57,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:39:57,146 INFO L225 Difference]: With dead ends: 4824 [2022-07-22 19:39:57,147 INFO L226 Difference]: Without dead ends: 4019 [2022-07-22 19:39:57,152 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 [2022-07-22 19:39:57,152 INFO L413 NwaCegarLoop]: 4377 mSDtfsCounter, 4583 mSDsluCounter, 16680 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4594 SdHoareTripleChecker+Valid, 21057 SdHoareTripleChecker+Invalid, 1375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 19:39:57,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4594 Valid, 21057 Invalid, 1375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1310 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 19:39:57,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4019 states. [2022-07-22 19:39:57,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4019 to 3569. [2022-07-22 19:39:57,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3569 states, 3383 states have (on average 1.7324859592078037) internal successors, (5861), 3393 states have internal predecessors, (5861), 122 states have call successors, (122), 54 states have call predecessors, (122), 62 states have return successors, (157), 129 states have call predecessors, (157), 122 states have call successors, (157) [2022-07-22 19:39:57,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3569 states to 3569 states and 6140 transitions. [2022-07-22 19:39:57,282 INFO L78 Accepts]: Start accepts. Automaton has 3569 states and 6140 transitions. Word has length 90 [2022-07-22 19:39:57,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:39:57,283 INFO L495 AbstractCegarLoop]: Abstraction has 3569 states and 6140 transitions. [2022-07-22 19:39:57,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-22 19:39:57,284 INFO L276 IsEmpty]: Start isEmpty. Operand 3569 states and 6140 transitions. [2022-07-22 19:39:57,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-22 19:39:57,286 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:39:57,286 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] [2022-07-22 19:39:57,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 19:39:57,287 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:39:57,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:39:57,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1877597400, now seen corresponding path program 1 times [2022-07-22 19:39:57,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:39:57,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980870593] [2022-07-22 19:39:57,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:39:57,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:39:57,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:57,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:39:57,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:57,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 19:39:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:57,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 19:39:57,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:57,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 19:39:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:57,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 19:39:57,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:57,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:39:57,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:39:57,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980870593] [2022-07-22 19:39:57,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980870593] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:39:57,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:39:57,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:39:57,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364134145] [2022-07-22 19:39:57,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:39:57,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:39:57,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:39:57,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:39:57,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:39:57,375 INFO L87 Difference]: Start difference. First operand 3569 states and 6140 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-22 19:39:58,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:39:58,731 INFO L93 Difference]: Finished difference Result 7566 states and 12260 transitions. [2022-07-22 19:39:58,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:39:58,731 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-22 19:39:58,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:39:58,763 INFO L225 Difference]: With dead ends: 7566 [2022-07-22 19:39:58,763 INFO L226 Difference]: Without dead ends: 6130 [2022-07-22 19:39:58,771 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 [2022-07-22 19:39:58,772 INFO L413 NwaCegarLoop]: 4367 mSDtfsCounter, 4752 mSDsluCounter, 16672 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4768 SdHoareTripleChecker+Valid, 21039 SdHoareTripleChecker+Invalid, 1354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 19:39:58,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4768 Valid, 21039 Invalid, 1354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 19:39:58,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6130 states. [2022-07-22 19:39:58,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6130 to 4821. [2022-07-22 19:39:58,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4821 states, 4483 states have (on average 1.677671202319875) internal successors, (7521), 4501 states have internal predecessors, (7521), 218 states have call successors, (218), 102 states have call predecessors, (218), 118 states have return successors, (315), 233 states have call predecessors, (315), 218 states have call successors, (315) [2022-07-22 19:39:58,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4821 states to 4821 states and 8054 transitions. [2022-07-22 19:39:58,985 INFO L78 Accepts]: Start accepts. Automaton has 4821 states and 8054 transitions. Word has length 90 [2022-07-22 19:39:58,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:39:58,985 INFO L495 AbstractCegarLoop]: Abstraction has 4821 states and 8054 transitions. [2022-07-22 19:39:58,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-22 19:39:58,987 INFO L276 IsEmpty]: Start isEmpty. Operand 4821 states and 8054 transitions. [2022-07-22 19:39:58,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-22 19:39:58,989 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:39:58,990 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] [2022-07-22 19:39:58,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 19:39:58,990 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:39:58,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:39:58,991 INFO L85 PathProgramCache]: Analyzing trace with hash -508912106, now seen corresponding path program 1 times [2022-07-22 19:39:58,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:39:58,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766298147] [2022-07-22 19:39:58,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:39:58,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:39:59,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:59,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:39:59,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:59,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 19:39:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:59,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 19:39:59,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:59,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 19:39:59,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:59,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 19:39:59,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:59,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:39:59,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:39:59,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766298147] [2022-07-22 19:39:59,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766298147] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:39:59,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:39:59,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:39:59,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070098392] [2022-07-22 19:39:59,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:39:59,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:39:59,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:39:59,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:39:59,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:39:59,085 INFO L87 Difference]: Start difference. First operand 4821 states and 8054 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-22 19:40:00,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:40:00,677 INFO L93 Difference]: Finished difference Result 12284 states and 19516 transitions. [2022-07-22 19:40:00,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:40:00,678 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-22 19:40:00,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:40:00,724 INFO L225 Difference]: With dead ends: 12284 [2022-07-22 19:40:00,724 INFO L226 Difference]: Without dead ends: 9596 [2022-07-22 19:40:00,738 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 [2022-07-22 19:40:00,738 INFO L413 NwaCegarLoop]: 4421 mSDtfsCounter, 4609 mSDsluCounter, 16669 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4619 SdHoareTripleChecker+Valid, 21090 SdHoareTripleChecker+Invalid, 1531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 19:40:00,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4619 Valid, 21090 Invalid, 1531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 19:40:00,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9596 states. [2022-07-22 19:40:01,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9596 to 7234. [2022-07-22 19:40:01,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7234 states, 6600 states have (on average 1.6234848484848485) internal successors, (10715), 6634 states have internal predecessors, (10715), 402 states have call successors, (402), 198 states have call predecessors, (402), 230 states have return successors, (677), 433 states have call predecessors, (677), 402 states have call successors, (677) [2022-07-22 19:40:01,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7234 states to 7234 states and 11794 transitions. [2022-07-22 19:40:01,064 INFO L78 Accepts]: Start accepts. Automaton has 7234 states and 11794 transitions. Word has length 90 [2022-07-22 19:40:01,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:40:01,064 INFO L495 AbstractCegarLoop]: Abstraction has 7234 states and 11794 transitions. [2022-07-22 19:40:01,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-22 19:40:01,066 INFO L276 IsEmpty]: Start isEmpty. Operand 7234 states and 11794 transitions. [2022-07-22 19:40:01,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-22 19:40:01,077 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:40:01,078 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] [2022-07-22 19:40:01,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 19:40:01,081 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:40:01,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:40:01,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1001538280, now seen corresponding path program 1 times [2022-07-22 19:40:01,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:40:01,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308298145] [2022-07-22 19:40:01,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:40:01,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:40:01,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:01,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:40:01,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:01,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 19:40:01,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:01,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 19:40:01,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:01,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 19:40:01,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:01,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 19:40:01,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:01,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:40:01,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:40:01,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308298145] [2022-07-22 19:40:01,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308298145] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:40:01,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:40:01,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:40:01,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436909007] [2022-07-22 19:40:01,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:40:01,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:40:01,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:40:01,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:40:01,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:40:01,166 INFO L87 Difference]: Start difference. First operand 7234 states and 11794 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-22 19:40:02,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:40:02,808 INFO L93 Difference]: Finished difference Result 21183 states and 33370 transitions. [2022-07-22 19:40:02,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:40:02,808 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-22 19:40:02,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:40:02,871 INFO L225 Difference]: With dead ends: 21183 [2022-07-22 19:40:02,871 INFO L226 Difference]: Without dead ends: 16082 [2022-07-22 19:40:02,892 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 [2022-07-22 19:40:02,893 INFO L413 NwaCegarLoop]: 4357 mSDtfsCounter, 4672 mSDsluCounter, 16672 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4688 SdHoareTripleChecker+Valid, 21029 SdHoareTripleChecker+Invalid, 1338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 19:40:02,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4688 Valid, 21029 Invalid, 1338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1267 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 19:40:02,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16082 states. [2022-07-22 19:40:03,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16082 to 12123. [2022-07-22 19:40:03,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12123 states, 10913 states have (on average 1.5802254192247778) internal successors, (17245), 10979 states have internal predecessors, (17245), 754 states have call successors, (754), 390 states have call predecessors, (754), 454 states have return successors, (1547), 817 states have call predecessors, (1547), 754 states have call successors, (1547) [2022-07-22 19:40:03,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12123 states to 12123 states and 19546 transitions. [2022-07-22 19:40:03,494 INFO L78 Accepts]: Start accepts. Automaton has 12123 states and 19546 transitions. Word has length 90 [2022-07-22 19:40:03,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:40:03,494 INFO L495 AbstractCegarLoop]: Abstraction has 12123 states and 19546 transitions. [2022-07-22 19:40:03,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-22 19:40:03,494 INFO L276 IsEmpty]: Start isEmpty. Operand 12123 states and 19546 transitions. [2022-07-22 19:40:03,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-22 19:40:03,505 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:40:03,505 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] [2022-07-22 19:40:03,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 19:40:03,506 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:40:03,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:40:03,507 INFO L85 PathProgramCache]: Analyzing trace with hash -47598122, now seen corresponding path program 1 times [2022-07-22 19:40:03,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:40:03,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503807238] [2022-07-22 19:40:03,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:40:03,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:40:03,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:03,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:40:03,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:03,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 19:40:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:03,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 19:40:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:03,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 19:40:03,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:03,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 19:40:03,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:03,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:40:03,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:40:03,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503807238] [2022-07-22 19:40:03,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503807238] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:40:03,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:40:03,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:40:03,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093227292] [2022-07-22 19:40:03,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:40:03,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:40:03,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:40:03,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:40:03,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:40:03,597 INFO L87 Difference]: Start difference. First operand 12123 states and 19546 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-22 19:40:05,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:40:05,886 INFO L93 Difference]: Finished difference Result 38598 states and 61136 transitions. [2022-07-22 19:40:05,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:40:05,886 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-22 19:40:05,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:40:06,058 INFO L225 Difference]: With dead ends: 38598 [2022-07-22 19:40:06,058 INFO L226 Difference]: Without dead ends: 28608 [2022-07-22 19:40:06,104 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 [2022-07-22 19:40:06,105 INFO L413 NwaCegarLoop]: 4352 mSDtfsCounter, 4632 mSDsluCounter, 16672 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4648 SdHoareTripleChecker+Valid, 21024 SdHoareTripleChecker+Invalid, 1330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 19:40:06,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4648 Valid, 21024 Invalid, 1330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 19:40:06,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28608 states. [2022-07-22 19:40:07,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28608 to 21868. [2022-07-22 19:40:07,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21868 states, 19538 states have (on average 1.5526154161121917) internal successors, (30335), 19668 states have internal predecessors, (30335), 1426 states have call successors, (1426), 774 states have call predecessors, (1426), 902 states have return successors, (3741), 1553 states have call predecessors, (3741), 1426 states have call successors, (3741) [2022-07-22 19:40:07,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21868 states to 21868 states and 35502 transitions. [2022-07-22 19:40:07,373 INFO L78 Accepts]: Start accepts. Automaton has 21868 states and 35502 transitions. Word has length 90 [2022-07-22 19:40:07,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:40:07,373 INFO L495 AbstractCegarLoop]: Abstraction has 21868 states and 35502 transitions. [2022-07-22 19:40:07,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-22 19:40:07,374 INFO L276 IsEmpty]: Start isEmpty. Operand 21868 states and 35502 transitions. [2022-07-22 19:40:07,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-22 19:40:07,391 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:40:07,391 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] [2022-07-22 19:40:07,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 19:40:07,392 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:40:07,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:40:07,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1263751848, now seen corresponding path program 1 times [2022-07-22 19:40:07,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:40:07,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490712425] [2022-07-22 19:40:07,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:40:07,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:40:07,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:07,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:40:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:07,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 19:40:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:07,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 19:40:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:07,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 19:40:07,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:07,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 19:40:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:07,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:40:07,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:40:07,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490712425] [2022-07-22 19:40:07,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490712425] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:40:07,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:40:07,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:40:07,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299743138] [2022-07-22 19:40:07,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:40:07,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:40:07,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:40:07,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:40:07,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:40:07,480 INFO L87 Difference]: Start difference. First operand 21868 states and 35502 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-22 19:40:10,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:40:10,758 INFO L93 Difference]: Finished difference Result 72173 states and 116654 transitions. [2022-07-22 19:40:10,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:40:10,759 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-22 19:40:10,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:40:11,135 INFO L225 Difference]: With dead ends: 72173 [2022-07-22 19:40:11,136 INFO L226 Difference]: Without dead ends: 52438 [2022-07-22 19:40:11,203 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 [2022-07-22 19:40:11,204 INFO L413 NwaCegarLoop]: 4353 mSDtfsCounter, 4577 mSDsluCounter, 16657 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4587 SdHoareTripleChecker+Valid, 21010 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 19:40:11,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4587 Valid, 21010 Invalid, 1396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 19:40:11,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52438 states. [2022-07-22 19:40:13,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52438 to 41269. [2022-07-22 19:40:13,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41269 states, 36779 states have (on average 1.5380787949645178) internal successors, (56569), 37037 states have internal predecessors, (56569), 2698 states have call successors, (2698), 1534 states have call predecessors, (2698), 1790 states have return successors, (9515), 2953 states have call predecessors, (9515), 2698 states have call successors, (9515) [2022-07-22 19:40:13,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41269 states to 41269 states and 68782 transitions. [2022-07-22 19:40:13,587 INFO L78 Accepts]: Start accepts. Automaton has 41269 states and 68782 transitions. Word has length 90 [2022-07-22 19:40:13,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:40:13,590 INFO L495 AbstractCegarLoop]: Abstraction has 41269 states and 68782 transitions. [2022-07-22 19:40:13,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-22 19:40:13,591 INFO L276 IsEmpty]: Start isEmpty. Operand 41269 states and 68782 transitions. [2022-07-22 19:40:13,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-22 19:40:13,626 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:40:13,626 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] [2022-07-22 19:40:13,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 19:40:13,627 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:40:13,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:40:13,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1995719274, now seen corresponding path program 1 times [2022-07-22 19:40:13,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:40:13,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824941572] [2022-07-22 19:40:13,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:40:13,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:40:13,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:13,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:40:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:13,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 19:40:13,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:13,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 19:40:13,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:13,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 19:40:13,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:13,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 19:40:13,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:13,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:40:13,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:40:13,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824941572] [2022-07-22 19:40:13,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824941572] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:40:13,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:40:13,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 19:40:13,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554204315] [2022-07-22 19:40:13,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:40:13,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 19:40:13,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:40:13,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 19:40:13,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 19:40:13,718 INFO L87 Difference]: Start difference. First operand 41269 states and 68782 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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) [2022-07-22 19:40:18,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:40:18,546 INFO L93 Difference]: Finished difference Result 113490 states and 185399 transitions. [2022-07-22 19:40:18,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 19:40:18,546 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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 90 [2022-07-22 19:40:18,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:40:18,886 INFO L225 Difference]: With dead ends: 113490 [2022-07-22 19:40:18,886 INFO L226 Difference]: Without dead ends: 74355 [2022-07-22 19:40:19,231 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 [2022-07-22 19:40:19,233 INFO L413 NwaCegarLoop]: 4475 mSDtfsCounter, 4774 mSDsluCounter, 12412 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4803 SdHoareTripleChecker+Valid, 16887 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 19:40:19,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4803 Valid, 16887 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 19:40:19,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74355 states. [2022-07-22 19:40:22,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74355 to 60660. [2022-07-22 19:40:22,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60660 states, 53846 states have (on average 1.5203729153511867) internal successors, (81866), 54361 states have internal predecessors, (81866), 4120 states have call successors, (4120), 2308 states have call predecessors, (4120), 2692 states have return successors, (13125), 4246 states have call predecessors, (13125), 4120 states have call successors, (13125) [2022-07-22 19:40:22,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60660 states to 60660 states and 99111 transitions. [2022-07-22 19:40:22,535 INFO L78 Accepts]: Start accepts. Automaton has 60660 states and 99111 transitions. Word has length 90 [2022-07-22 19:40:22,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:40:22,535 INFO L495 AbstractCegarLoop]: Abstraction has 60660 states and 99111 transitions. [2022-07-22 19:40:22,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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) [2022-07-22 19:40:22,535 INFO L276 IsEmpty]: Start isEmpty. Operand 60660 states and 99111 transitions. [2022-07-22 19:40:22,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 19:40:22,691 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:40:22,691 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:40:22,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 19:40:22,692 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:40:22,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:40:22,692 INFO L85 PathProgramCache]: Analyzing trace with hash 499790298, now seen corresponding path program 1 times [2022-07-22 19:40:22,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:40:22,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763302277] [2022-07-22 19:40:22,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:40:22,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:40:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:22,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:40:22,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:22,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 19:40:22,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:22,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 19:40:22,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:22,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 19:40:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:22,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 19:40:22,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:22,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 19:40:22,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:22,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:40:22,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:22,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 19:40:22,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:22,822 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 19:40:22,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:40:22,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763302277] [2022-07-22 19:40:22,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763302277] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 19:40:22,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761785897] [2022-07-22 19:40:22,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:40:22,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:40:22,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:40:22,826 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) [2022-07-22 19:40:22,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 19:40:22,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:22,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 19:40:22,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 19:40:23,017 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 19:40:23,018 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 19:40:23,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761785897] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:40:23,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 19:40:23,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-22 19:40:23,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578137138] [2022-07-22 19:40:23,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:40:23,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 19:40:23,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:40:23,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 19:40:23,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:40:23,020 INFO L87 Difference]: Start difference. First operand 60660 states and 99111 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 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) [2022-07-22 19:40:28,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:40:28,231 INFO L93 Difference]: Finished difference Result 176333 states and 288761 transitions. [2022-07-22 19:40:28,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 19:40:28,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 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 146 [2022-07-22 19:40:28,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:40:28,679 INFO L225 Difference]: With dead ends: 176333 [2022-07-22 19:40:28,679 INFO L226 Difference]: Without dead ends: 117807 [2022-07-22 19:40:28,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:40:28,804 INFO L413 NwaCegarLoop]: 4233 mSDtfsCounter, 4173 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4173 SdHoareTripleChecker+Valid, 4470 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 [2022-07-22 19:40:28,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4173 Valid, 4470 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 19:40:28,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117807 states. [2022-07-22 19:40:34,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117807 to 117033. [2022-07-22 19:40:34,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117033 states, 103621 states have (on average 1.5118653554781367) internal successors, (156661), 104649 states have internal predecessors, (156661), 8034 states have call successors, (8034), 4608 states have call predecessors, (8034), 5376 states have return successors, (25789), 8031 states have call predecessors, (25789), 8034 states have call successors, (25789) [2022-07-22 19:40:34,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117033 states to 117033 states and 190484 transitions. [2022-07-22 19:40:34,916 INFO L78 Accepts]: Start accepts. Automaton has 117033 states and 190484 transitions. Word has length 146 [2022-07-22 19:40:34,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:40:34,917 INFO L495 AbstractCegarLoop]: Abstraction has 117033 states and 190484 transitions. [2022-07-22 19:40:34,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 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) [2022-07-22 19:40:34,917 INFO L276 IsEmpty]: Start isEmpty. Operand 117033 states and 190484 transitions. [2022-07-22 19:40:35,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 19:40:35,481 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:40:35,481 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:40:35,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 19:40:35,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-22 19:40:35,695 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:40:35,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:40:35,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1368264198, now seen corresponding path program 1 times [2022-07-22 19:40:35,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:40:35,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182950953] [2022-07-22 19:40:35,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:40:35,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:40:35,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:35,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:40:35,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:35,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 19:40:35,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:35,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 19:40:35,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:35,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 19:40:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:35,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 19:40:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:35,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 19:40:35,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:35,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:40:35,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:35,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 19:40:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:35,809 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 19:40:35,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:40:35,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182950953] [2022-07-22 19:40:35,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182950953] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 19:40:35,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445366516] [2022-07-22 19:40:35,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:40:35,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:40:35,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:40:35,811 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 19:40:35,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 19:40:35,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:35,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 19:40:35,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 19:40:36,016 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 19:40:36,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 19:40:36,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445366516] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:40:36,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 19:40:36,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-22 19:40:36,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157654073] [2022-07-22 19:40:36,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:40:36,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 19:40:36,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:40:36,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 19:40:36,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:40:36,018 INFO L87 Difference]: Start difference. First operand 117033 states and 190484 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 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)