./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.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 237919602f057be6bafc5b901424d626990bfa1f459ab937d0f6252d6c0cf13c --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 18:51:14,699 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 18:51:14,730 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 18:51:14,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 18:51:14,750 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 18:51:14,751 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 18:51:14,752 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 18:51:14,753 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 18:51:14,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 18:51:14,754 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 18:51:14,755 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 18:51:14,756 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 18:51:14,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 18:51:14,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 18:51:14,757 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 18:51:14,758 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 18:51:14,759 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 18:51:14,759 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 18:51:14,760 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 18:51:14,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 18:51:14,762 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 18:51:14,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 18:51:14,763 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 18:51:14,764 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 18:51:14,765 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 18:51:14,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 18:51:14,767 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 18:51:14,767 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 18:51:14,767 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 18:51:14,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 18:51:14,768 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 18:51:14,769 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 18:51:14,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 18:51:14,769 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 18:51:14,770 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 18:51:14,771 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 18:51:14,771 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 18:51:14,771 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 18:51:14,771 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 18:51:14,772 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 18:51:14,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 18:51:14,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 18:51:14,774 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 18:51:14,787 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 18:51:14,787 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 18:51:14,787 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 18:51:14,788 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 18:51:14,788 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 18:51:14,788 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 18:51:14,789 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 18:51:14,789 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 18:51:14,789 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 18:51:14,789 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 18:51:14,789 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 18:51:14,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 18:51:14,790 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 18:51:14,790 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 18:51:14,790 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 18:51:14,790 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 18:51:14,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 18:51:14,790 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 18:51:14,791 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 18:51:14,791 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 18:51:14,791 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 18:51:14,791 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 18:51:14,791 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 18:51:14,792 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 18:51:14,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:51:14,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 18:51:14,792 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 18:51:14,792 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 18:51:14,792 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 18:51:14,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 18:51:14,793 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 18:51:14,793 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 18:51:14,793 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 18:51:14,793 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 237919602f057be6bafc5b901424d626990bfa1f459ab937d0f6252d6c0cf13c [2022-07-13 18:51:14,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 18:51:14,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 18:51:14,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 18:51:14,994 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 18:51:14,995 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 18:51:14,996 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2022-07-13 18:51:15,038 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c50102b43/9be0a98b171b423abf4658d9aa5ac85a/FLAGeb47298fa [2022-07-13 18:51:15,400 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 18:51:15,401 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2022-07-13 18:51:15,418 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c50102b43/9be0a98b171b423abf4658d9aa5ac85a/FLAGeb47298fa [2022-07-13 18:51:15,802 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c50102b43/9be0a98b171b423abf4658d9aa5ac85a [2022-07-13 18:51:15,803 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 18:51:15,805 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 18:51:15,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 18:51:15,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 18:51:15,823 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 18:51:15,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:51:15" (1/1) ... [2022-07-13 18:51:15,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3061fd70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:51:15, skipping insertion in model container [2022-07-13 18:51:15,825 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:51:15" (1/1) ... [2022-07-13 18:51:15,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 18:51:15,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 18:51:16,103 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/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[8607,8620] [2022-07-13 18:51:16,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:51:16,182 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 18:51:16,229 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/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[8607,8620] [2022-07-13 18:51:16,273 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:51:16,288 INFO L208 MainTranslator]: Completed translation [2022-07-13 18:51:16,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:51:16 WrapperNode [2022-07-13 18:51:16,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 18:51:16,289 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 18:51:16,290 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 18:51:16,290 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 18:51:16,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:51:16" (1/1) ... [2022-07-13 18:51:16,317 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:51:16" (1/1) ... [2022-07-13 18:51:16,345 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 803 [2022-07-13 18:51:16,351 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 18:51:16,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 18:51:16,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 18:51:16,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 18:51:16,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:51:16" (1/1) ... [2022-07-13 18:51:16,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:51:16" (1/1) ... [2022-07-13 18:51:16,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:51:16" (1/1) ... [2022-07-13 18:51:16,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:51:16" (1/1) ... [2022-07-13 18:51:16,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:51:16" (1/1) ... [2022-07-13 18:51:16,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:51:16" (1/1) ... [2022-07-13 18:51:16,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:51:16" (1/1) ... [2022-07-13 18:51:16,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 18:51:16,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 18:51:16,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 18:51:16,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 18:51:16,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:51:16" (1/1) ... [2022-07-13 18:51:16,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:51:16,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:51:16,423 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) [2022-07-13 18:51:16,435 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 [2022-07-13 18:51:16,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 18:51:16,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 18:51:16,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 18:51:16,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 18:51:16,603 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 18:51:16,605 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 18:51:17,104 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 18:51:17,110 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 18:51:17,111 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 18:51:17,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:51:17 BoogieIcfgContainer [2022-07-13 18:51:17,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 18:51:17,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 18:51:17,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 18:51:17,116 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 18:51:17,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:51:15" (1/3) ... [2022-07-13 18:51:17,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8eec078 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:51:17, skipping insertion in model container [2022-07-13 18:51:17,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:51:16" (2/3) ... [2022-07-13 18:51:17,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8eec078 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:51:17, skipping insertion in model container [2022-07-13 18:51:17,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:51:17" (3/3) ... [2022-07-13 18:51:17,118 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2022-07-13 18:51:17,127 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 18:51:17,127 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 18:51:17,156 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 18:51:17,160 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@6bc2f5a1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@78841107 [2022-07-13 18:51:17,160 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 18:51:17,163 INFO L276 IsEmpty]: Start isEmpty. Operand has 216 states, 214 states have (on average 1.719626168224299) internal successors, (368), 215 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:51:17,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-13 18:51:17,170 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:51:17,171 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] [2022-07-13 18:51:17,171 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:51:17,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:51:17,175 INFO L85 PathProgramCache]: Analyzing trace with hash -981857485, now seen corresponding path program 1 times [2022-07-13 18:51:17,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:51:17,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766937396] [2022-07-13 18:51:17,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:51:17,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:51:17,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:51:17,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:51:17,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:51:17,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766937396] [2022-07-13 18:51:17,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766937396] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:51:17,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:51:17,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:51:17,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481443141] [2022-07-13 18:51:17,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:51:17,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:51:17,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:51:17,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:51:17,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:51:17,469 INFO L87 Difference]: Start difference. First operand has 216 states, 214 states have (on average 1.719626168224299) internal successors, (368), 215 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:51:17,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:51:17,646 INFO L93 Difference]: Finished difference Result 868 states and 1404 transitions. [2022-07-13 18:51:17,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 18:51:17,648 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-07-13 18:51:17,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:51:17,668 INFO L225 Difference]: With dead ends: 868 [2022-07-13 18:51:17,668 INFO L226 Difference]: Without dead ends: 748 [2022-07-13 18:51:17,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-13 18:51:17,672 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 2252 mSDsluCounter, 1970 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2252 SdHoareTripleChecker+Valid, 2341 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:51:17,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2252 Valid, 2341 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:51:17,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2022-07-13 18:51:17,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 329. [2022-07-13 18:51:17,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 328 states have (on average 1.5) internal successors, (492), 328 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:51:17,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 492 transitions. [2022-07-13 18:51:17,749 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 492 transitions. Word has length 81 [2022-07-13 18:51:17,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:51:17,750 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 492 transitions. [2022-07-13 18:51:17,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:51:17,751 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 492 transitions. [2022-07-13 18:51:17,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-13 18:51:17,757 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:51:17,757 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] [2022-07-13 18:51:17,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 18:51:17,757 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:51:17,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:51:17,758 INFO L85 PathProgramCache]: Analyzing trace with hash -651776507, now seen corresponding path program 1 times [2022-07-13 18:51:17,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:51:17,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702128898] [2022-07-13 18:51:17,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:51:17,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:51:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:51:17,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:51:17,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:51:17,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702128898] [2022-07-13 18:51:17,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702128898] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:51:17,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:51:17,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:51:17,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579739828] [2022-07-13 18:51:17,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:51:17,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:51:17,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:51:17,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:51:17,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:51:17,983 INFO L87 Difference]: Start difference. First operand 329 states and 492 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:51:18,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:51:18,247 INFO L93 Difference]: Finished difference Result 1425 states and 2199 transitions. [2022-07-13 18:51:18,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 18:51:18,248 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-07-13 18:51:18,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:51:18,252 INFO L225 Difference]: With dead ends: 1425 [2022-07-13 18:51:18,252 INFO L226 Difference]: Without dead ends: 1177 [2022-07-13 18:51:18,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:51:18,254 INFO L413 NwaCegarLoop]: 873 mSDtfsCounter, 1084 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 1941 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:51:18,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1084 Valid, 1941 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:51:18,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2022-07-13 18:51:18,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1169. [2022-07-13 18:51:18,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1169 states, 1168 states have (on average 1.538527397260274) internal successors, (1797), 1168 states have internal predecessors, (1797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:51:18,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 1797 transitions. [2022-07-13 18:51:18,337 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 1797 transitions. Word has length 82 [2022-07-13 18:51:18,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:51:18,338 INFO L495 AbstractCegarLoop]: Abstraction has 1169 states and 1797 transitions. [2022-07-13 18:51:18,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:51:18,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 1797 transitions. [2022-07-13 18:51:18,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-13 18:51:18,340 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:51:18,340 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] [2022-07-13 18:51:18,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 18:51:18,340 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:51:18,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:51:18,341 INFO L85 PathProgramCache]: Analyzing trace with hash 994859382, now seen corresponding path program 1 times [2022-07-13 18:51:18,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:51:18,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358163663] [2022-07-13 18:51:18,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:51:18,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:51:18,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:51:18,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:51:18,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:51:18,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358163663] [2022-07-13 18:51:18,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358163663] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:51:18,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:51:18,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:51:18,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506083046] [2022-07-13 18:51:18,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:51:18,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:51:18,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:51:18,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:51:18,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:51:18,428 INFO L87 Difference]: Start difference. First operand 1169 states and 1797 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:51:18,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:51:18,779 INFO L93 Difference]: Finished difference Result 3077 states and 4784 transitions. [2022-07-13 18:51:18,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:51:18,779 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-07-13 18:51:18,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:51:18,786 INFO L225 Difference]: With dead ends: 3077 [2022-07-13 18:51:18,786 INFO L226 Difference]: Without dead ends: 1951 [2022-07-13 18:51:18,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:51:18,792 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 1229 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1229 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:51:18,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1229 Valid, 290 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:51:18,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1951 states. [2022-07-13 18:51:18,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1951 to 1949. [2022-07-13 18:51:18,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1949 states, 1948 states have (on average 1.5467145790554415) internal successors, (3013), 1948 states have internal predecessors, (3013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:51:18,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1949 states to 1949 states and 3013 transitions. [2022-07-13 18:51:18,934 INFO L78 Accepts]: Start accepts. Automaton has 1949 states and 3013 transitions. Word has length 83 [2022-07-13 18:51:18,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:51:18,934 INFO L495 AbstractCegarLoop]: Abstraction has 1949 states and 3013 transitions. [2022-07-13 18:51:18,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:51:18,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1949 states and 3013 transitions. [2022-07-13 18:51:18,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-13 18:51:18,937 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:51:18,937 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] [2022-07-13 18:51:18,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 18:51:18,938 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:51:18,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:51:18,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1568078791, now seen corresponding path program 1 times [2022-07-13 18:51:18,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:51:18,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750965241] [2022-07-13 18:51:18,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:51:18,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:51:18,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:51:19,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:51:19,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:51:19,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750965241] [2022-07-13 18:51:19,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750965241] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:51:19,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:51:19,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:51:19,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775875481] [2022-07-13 18:51:19,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:51:19,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:51:19,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:51:19,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:51:19,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:51:19,034 INFO L87 Difference]: Start difference. First operand 1949 states and 3013 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:51:19,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:51:19,440 INFO L93 Difference]: Finished difference Result 5453 states and 8491 transitions. [2022-07-13 18:51:19,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:51:19,441 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-07-13 18:51:19,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:51:19,450 INFO L225 Difference]: With dead ends: 5453 [2022-07-13 18:51:19,451 INFO L226 Difference]: Without dead ends: 3563 [2022-07-13 18:51:19,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:51:19,460 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 1187 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1187 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:51:19,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1187 Valid, 294 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:51:19,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3563 states. [2022-07-13 18:51:19,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3563 to 3561. [2022-07-13 18:51:19,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3561 states, 3560 states have (on average 1.548314606741573) internal successors, (5512), 3560 states have internal predecessors, (5512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:51:19,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3561 states to 3561 states and 5512 transitions. [2022-07-13 18:51:19,711 INFO L78 Accepts]: Start accepts. Automaton has 3561 states and 5512 transitions. Word has length 83 [2022-07-13 18:51:19,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:51:19,711 INFO L495 AbstractCegarLoop]: Abstraction has 3561 states and 5512 transitions. [2022-07-13 18:51:19,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:51:19,711 INFO L276 IsEmpty]: Start isEmpty. Operand 3561 states and 5512 transitions. [2022-07-13 18:51:19,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-13 18:51:19,713 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:51:19,713 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] [2022-07-13 18:51:19,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 18:51:19,714 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:51:19,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:51:19,714 INFO L85 PathProgramCache]: Analyzing trace with hash -2053901352, now seen corresponding path program 1 times [2022-07-13 18:51:19,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:51:19,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501052264] [2022-07-13 18:51:19,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:51:19,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:51:19,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:51:19,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:51:19,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:51:19,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501052264] [2022-07-13 18:51:19,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501052264] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:51:19,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:51:19,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:51:19,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067016900] [2022-07-13 18:51:19,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:51:19,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:51:19,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:51:19,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:51:19,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:51:19,761 INFO L87 Difference]: Start difference. First operand 3561 states and 5512 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:51:20,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:51:20,344 INFO L93 Difference]: Finished difference Result 10110 states and 15709 transitions. [2022-07-13 18:51:20,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:51:20,344 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-07-13 18:51:20,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:51:20,363 INFO L225 Difference]: With dead ends: 10110 [2022-07-13 18:51:20,363 INFO L226 Difference]: Without dead ends: 6631 [2022-07-13 18:51:20,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:51:20,369 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 1149 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:51:20,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1149 Valid, 296 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:51:20,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6631 states. [2022-07-13 18:51:20,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6631 to 6629. [2022-07-13 18:51:20,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6629 states, 6628 states have (on average 1.5446590223295111) internal successors, (10238), 6628 states have internal predecessors, (10238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:51:20,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6629 states to 6629 states and 10238 transitions. [2022-07-13 18:51:20,879 INFO L78 Accepts]: Start accepts. Automaton has 6629 states and 10238 transitions. Word has length 83 [2022-07-13 18:51:20,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:51:20,880 INFO L495 AbstractCegarLoop]: Abstraction has 6629 states and 10238 transitions. [2022-07-13 18:51:20,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:51:20,880 INFO L276 IsEmpty]: Start isEmpty. Operand 6629 states and 10238 transitions. [2022-07-13 18:51:20,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-13 18:51:20,883 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:51:20,883 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] [2022-07-13 18:51:20,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 18:51:20,884 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:51:20,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:51:20,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1112064425, now seen corresponding path program 1 times [2022-07-13 18:51:20,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:51:20,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339902876] [2022-07-13 18:51:20,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:51:20,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:51:20,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:51:20,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:51:20,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:51:20,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339902876] [2022-07-13 18:51:20,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339902876] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:51:20,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:51:20,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:51:20,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893696535] [2022-07-13 18:51:20,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:51:20,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:51:20,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:51:20,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:51:20,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:51:20,932 INFO L87 Difference]: Start difference. First operand 6629 states and 10238 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:51:21,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:51:21,904 INFO L93 Difference]: Finished difference Result 19043 states and 29467 transitions. [2022-07-13 18:51:21,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:51:21,904 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-07-13 18:51:21,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:51:21,953 INFO L225 Difference]: With dead ends: 19043 [2022-07-13 18:51:21,953 INFO L226 Difference]: Without dead ends: 12526 [2022-07-13 18:51:21,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:51:21,965 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 1111 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1111 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:51:21,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1111 Valid, 298 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:51:21,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12526 states. [2022-07-13 18:51:22,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12526 to 12524. [2022-07-13 18:51:22,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12524 states, 12523 states have (on average 1.5389283717958955) internal successors, (19272), 12523 states have internal predecessors, (19272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:51:22,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12524 states to 12524 states and 19272 transitions. [2022-07-13 18:51:22,853 INFO L78 Accepts]: Start accepts. Automaton has 12524 states and 19272 transitions. Word has length 83 [2022-07-13 18:51:22,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:51:22,853 INFO L495 AbstractCegarLoop]: Abstraction has 12524 states and 19272 transitions. [2022-07-13 18:51:22,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:51:22,854 INFO L276 IsEmpty]: Start isEmpty. Operand 12524 states and 19272 transitions. [2022-07-13 18:51:22,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-13 18:51:22,857 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:51:22,857 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] [2022-07-13 18:51:22,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 18:51:22,858 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:51:22,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:51:22,858 INFO L85 PathProgramCache]: Analyzing trace with hash 340452666, now seen corresponding path program 1 times [2022-07-13 18:51:22,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:51:22,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561434840] [2022-07-13 18:51:22,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:51:22,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:51:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:51:22,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:51:22,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:51:22,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561434840] [2022-07-13 18:51:22,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561434840] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:51:22,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:51:22,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:51:22,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659845230] [2022-07-13 18:51:22,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:51:22,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:51:22,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:51:22,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:51:22,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:51:22,902 INFO L87 Difference]: Start difference. First operand 12524 states and 19272 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:51:25,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:51:25,085 INFO L93 Difference]: Finished difference Result 36616 states and 56454 transitions. [2022-07-13 18:51:25,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:51:25,086 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-07-13 18:51:25,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:51:25,127 INFO L225 Difference]: With dead ends: 36616 [2022-07-13 18:51:25,128 INFO L226 Difference]: Without dead ends: 24238 [2022-07-13 18:51:25,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:51:25,146 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 1099 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:51:25,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1099 Valid, 307 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:51:25,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24238 states. [2022-07-13 18:51:26,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24238 to 24236. [2022-07-13 18:51:26,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24236 states, 24235 states have (on average 1.5354239735919126) internal successors, (37211), 24235 states have internal predecessors, (37211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:51:26,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24236 states to 24236 states and 37211 transitions. [2022-07-13 18:51:26,818 INFO L78 Accepts]: Start accepts. Automaton has 24236 states and 37211 transitions. Word has length 83 [2022-07-13 18:51:26,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:51:26,818 INFO L495 AbstractCegarLoop]: Abstraction has 24236 states and 37211 transitions. [2022-07-13 18:51:26,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:51:26,819 INFO L276 IsEmpty]: Start isEmpty. Operand 24236 states and 37211 transitions. [2022-07-13 18:51:26,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-13 18:51:26,823 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:51:26,823 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] [2022-07-13 18:51:26,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 18:51:26,823 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:51:26,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:51:26,824 INFO L85 PathProgramCache]: Analyzing trace with hash 31378129, now seen corresponding path program 1 times [2022-07-13 18:51:26,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:51:26,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639399979] [2022-07-13 18:51:26,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:51:26,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:51:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:51:26,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:51:26,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:51:26,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639399979] [2022-07-13 18:51:26,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639399979] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:51:26,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:51:26,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:51:26,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299550917] [2022-07-13 18:51:26,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:51:26,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:51:26,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:51:26,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:51:26,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:51:26,880 INFO L87 Difference]: Start difference. First operand 24236 states and 37211 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:51:30,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:51:30,294 INFO L93 Difference]: Finished difference Result 48238 states and 73820 transitions. [2022-07-13 18:51:30,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 18:51:30,295 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-07-13 18:51:30,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:51:30,465 INFO L225 Difference]: With dead ends: 48238 [2022-07-13 18:51:30,465 INFO L226 Difference]: Without dead ends: 48236 [2022-07-13 18:51:30,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:51:30,477 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 302 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:51:30,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 1233 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:51:30,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48236 states. [2022-07-13 18:51:32,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48236 to 24812. [2022-07-13 18:51:32,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24812 states, 24811 states have (on average 1.5229938333803554) internal successors, (37787), 24811 states have internal predecessors, (37787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:51:32,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24812 states to 24812 states and 37787 transitions. [2022-07-13 18:51:32,539 INFO L78 Accepts]: Start accepts. Automaton has 24812 states and 37787 transitions. Word has length 84 [2022-07-13 18:51:32,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:51:32,539 INFO L495 AbstractCegarLoop]: Abstraction has 24812 states and 37787 transitions. [2022-07-13 18:51:32,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:51:32,539 INFO L276 IsEmpty]: Start isEmpty. Operand 24812 states and 37787 transitions. [2022-07-13 18:51:32,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-13 18:51:32,545 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:51:32,545 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] [2022-07-13 18:51:32,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 18:51:32,545 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:51:32,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:51:32,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1251175856, now seen corresponding path program 1 times [2022-07-13 18:51:32,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:51:32,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224872336] [2022-07-13 18:51:32,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:51:32,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:51:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:51:32,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:51:32,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:51:32,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224872336] [2022-07-13 18:51:32,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224872336] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:51:32,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:51:32,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 18:51:32,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149164750] [2022-07-13 18:51:32,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:51:32,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 18:51:32,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:51:32,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 18:51:32,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 18:51:32,667 INFO L87 Difference]: Start difference. First operand 24812 states and 37787 transitions. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:51:42,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:51:42,460 INFO L93 Difference]: Finished difference Result 124500 states and 187951 transitions. [2022-07-13 18:51:42,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-13 18:51:42,460 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-07-13 18:51:42,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:51:42,660 INFO L225 Difference]: With dead ends: 124500 [2022-07-13 18:51:42,660 INFO L226 Difference]: Without dead ends: 100233 [2022-07-13 18:51:42,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2022-07-13 18:51:42,710 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 2630 mSDsluCounter, 1160 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2630 SdHoareTripleChecker+Valid, 1452 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 18:51:42,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2630 Valid, 1452 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1159 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 18:51:42,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100233 states. [2022-07-13 18:51:45,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100233 to 24910. [2022-07-13 18:51:45,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24910 states, 24909 states have (on average 1.5214982536432615) internal successors, (37899), 24909 states have internal predecessors, (37899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:51:45,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24910 states to 24910 states and 37899 transitions. [2022-07-13 18:51:45,913 INFO L78 Accepts]: Start accepts. Automaton has 24910 states and 37899 transitions. Word has length 85 [2022-07-13 18:51:45,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:51:45,913 INFO L495 AbstractCegarLoop]: Abstraction has 24910 states and 37899 transitions. [2022-07-13 18:51:45,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:51:45,914 INFO L276 IsEmpty]: Start isEmpty. Operand 24910 states and 37899 transitions. [2022-07-13 18:51:45,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-13 18:51:45,919 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:51:45,919 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] [2022-07-13 18:51:45,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 18:51:45,920 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:51:45,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:51:45,920 INFO L85 PathProgramCache]: Analyzing trace with hash 192213392, now seen corresponding path program 1 times [2022-07-13 18:51:45,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:51:45,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509066779] [2022-07-13 18:51:45,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:51:45,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:51:45,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:51:46,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:51:46,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:51:46,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509066779] [2022-07-13 18:51:46,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509066779] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:51:46,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:51:46,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 18:51:46,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435534247] [2022-07-13 18:51:46,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:51:46,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 18:51:46,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:51:46,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 18:51:46,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 18:51:46,020 INFO L87 Difference]: Start difference. First operand 24910 states and 37899 transitions. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:51:58,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:51:58,005 INFO L93 Difference]: Finished difference Result 124425 states and 187907 transitions. [2022-07-13 18:51:58,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-13 18:51:58,006 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-07-13 18:51:58,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:51:58,209 INFO L225 Difference]: With dead ends: 124425 [2022-07-13 18:51:58,210 INFO L226 Difference]: Without dead ends: 104922 [2022-07-13 18:51:58,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2022-07-13 18:51:58,260 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 2262 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2262 SdHoareTripleChecker+Valid, 1573 SdHoareTripleChecker+Invalid, 1280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 18:51:58,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2262 Valid, 1573 Invalid, 1280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1251 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 18:51:58,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104922 states. [2022-07-13 18:52:02,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104922 to 25196. [2022-07-13 18:52:02,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25196 states, 25195 states have (on average 1.5187140305616194) internal successors, (38264), 25195 states have internal predecessors, (38264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:52:02,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25196 states to 25196 states and 38264 transitions. [2022-07-13 18:52:02,123 INFO L78 Accepts]: Start accepts. Automaton has 25196 states and 38264 transitions. Word has length 85 [2022-07-13 18:52:02,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:52:02,123 INFO L495 AbstractCegarLoop]: Abstraction has 25196 states and 38264 transitions. [2022-07-13 18:52:02,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:52:02,124 INFO L276 IsEmpty]: Start isEmpty. Operand 25196 states and 38264 transitions. [2022-07-13 18:52:02,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-13 18:52:02,148 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:52:02,148 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] [2022-07-13 18:52:02,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 18:52:02,149 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:52:02,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:52:02,150 INFO L85 PathProgramCache]: Analyzing trace with hash -415777424, now seen corresponding path program 1 times [2022-07-13 18:52:02,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:52:02,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663257365] [2022-07-13 18:52:02,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:52:02,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:52:02,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:52:02,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:52:02,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:52:02,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663257365] [2022-07-13 18:52:02,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663257365] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:52:02,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:52:02,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:52:02,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111465737] [2022-07-13 18:52:02,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:52:02,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:52:02,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:52:02,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:52:02,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:52:02,227 INFO L87 Difference]: Start difference. First operand 25196 states and 38264 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:52:08,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:52:08,282 INFO L93 Difference]: Finished difference Result 70080 states and 106338 transitions. [2022-07-13 18:52:08,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:52:08,283 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-07-13 18:52:08,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:52:08,346 INFO L225 Difference]: With dead ends: 70080 [2022-07-13 18:52:08,347 INFO L226 Difference]: Without dead ends: 46078 [2022-07-13 18:52:08,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:52:08,372 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 263 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:52:08,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 820 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:52:08,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46078 states. [2022-07-13 18:52:14,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46078 to 46076. [2022-07-13 18:52:14,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46076 states, 46075 states have (on average 1.507455236028215) internal successors, (69456), 46075 states have internal predecessors, (69456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:52:14,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46076 states to 46076 states and 69456 transitions. [2022-07-13 18:52:14,313 INFO L78 Accepts]: Start accepts. Automaton has 46076 states and 69456 transitions. Word has length 85 [2022-07-13 18:52:14,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:52:14,314 INFO L495 AbstractCegarLoop]: Abstraction has 46076 states and 69456 transitions. [2022-07-13 18:52:14,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:52:14,314 INFO L276 IsEmpty]: Start isEmpty. Operand 46076 states and 69456 transitions. [2022-07-13 18:52:14,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-13 18:52:14,320 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:52:14,320 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] [2022-07-13 18:52:14,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 18:52:14,320 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:52:14,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:52:14,321 INFO L85 PathProgramCache]: Analyzing trace with hash -678332428, now seen corresponding path program 1 times [2022-07-13 18:52:14,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:52:14,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012297898] [2022-07-13 18:52:14,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:52:14,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:52:14,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:52:14,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:52:14,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:52:14,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012297898] [2022-07-13 18:52:14,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012297898] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:52:14,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:52:14,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:52:14,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198600859] [2022-07-13 18:52:14,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:52:14,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:52:14,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:52:14,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:52:14,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:52:14,348 INFO L87 Difference]: Start difference. First operand 46076 states and 69456 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)