./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.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/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.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 e3fe12f9ba7a27693660ab3b9c436489448c0880075d8a5a83d98427fc7a74d3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 18:23:39,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 18:23:39,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 18:23:39,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 18:23:39,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 18:23:39,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 18:23:39,833 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 18:23:39,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 18:23:39,836 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 18:23:39,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 18:23:39,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 18:23:39,841 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 18:23:39,841 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 18:23:39,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 18:23:39,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 18:23:39,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 18:23:39,845 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 18:23:39,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 18:23:39,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 18:23:39,853 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 18:23:39,854 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 18:23:39,855 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 18:23:39,855 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 18:23:39,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 18:23:39,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 18:23:39,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 18:23:39,863 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 18:23:39,864 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 18:23:39,864 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 18:23:39,865 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 18:23:39,866 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 18:23:39,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 18:23:39,867 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 18:23:39,867 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 18:23:39,868 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 18:23:39,869 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 18:23:39,869 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 18:23:39,869 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 18:23:39,869 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 18:23:39,870 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 18:23:39,870 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 18:23:39,871 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 18:23:39,872 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 18:23:39,898 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 18:23:39,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 18:23:39,899 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 18:23:39,899 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 18:23:39,900 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 18:23:39,900 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 18:23:39,900 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 18:23:39,900 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 18:23:39,901 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 18:23:39,901 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 18:23:39,901 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 18:23:39,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 18:23:39,902 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 18:23:39,902 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 18:23:39,902 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 18:23:39,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 18:23:39,902 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 18:23:39,902 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 18:23:39,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 18:23:39,903 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 18:23:39,903 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 18:23:39,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 18:23:39,903 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 18:23:39,903 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 18:23:39,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:23:39,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 18:23:39,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 18:23:39,904 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 18:23:39,904 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 18:23:39,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 18:23:39,905 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 18:23:39,905 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 18:23:39,905 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 18:23:39,905 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3fe12f9ba7a27693660ab3b9c436489448c0880075d8a5a83d98427fc7a74d3 [2022-07-13 18:23:40,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 18:23:40,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 18:23:40,101 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 18:23:40,102 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 18:23:40,102 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 18:23:40,103 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c [2022-07-13 18:23:40,170 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e7153f3b/a8fd841b4ca54a499519426e5bc9762e/FLAGf2d2cc2ff [2022-07-13 18:23:40,568 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 18:23:40,568 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c [2022-07-13 18:23:40,577 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e7153f3b/a8fd841b4ca54a499519426e5bc9762e/FLAGf2d2cc2ff [2022-07-13 18:23:40,592 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e7153f3b/a8fd841b4ca54a499519426e5bc9762e [2022-07-13 18:23:40,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 18:23:40,595 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 18:23:40,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 18:23:40,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 18:23:40,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 18:23:40,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:23:40" (1/1) ... [2022-07-13 18:23:40,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42e9d721 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:23:40, skipping insertion in model container [2022-07-13 18:23:40,602 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:23:40" (1/1) ... [2022-07-13 18:23:40,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 18:23:40,637 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 18:23:40,840 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/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c[6899,6912] [2022-07-13 18:23:40,842 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:23:40,849 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 18:23:40,913 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/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c[6899,6912] [2022-07-13 18:23:40,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:23:40,933 INFO L208 MainTranslator]: Completed translation [2022-07-13 18:23:40,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:23:40 WrapperNode [2022-07-13 18:23:40,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 18:23:40,936 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 18:23:40,937 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 18:23:40,937 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 18:23:40,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:23:40" (1/1) ... [2022-07-13 18:23:40,957 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:23:40" (1/1) ... [2022-07-13 18:23:40,991 INFO L137 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 252 [2022-07-13 18:23:40,992 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 18:23:40,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 18:23:40,992 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 18:23:40,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 18:23:40,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:23:40" (1/1) ... [2022-07-13 18:23:40,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:23:40" (1/1) ... [2022-07-13 18:23:41,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:23:40" (1/1) ... [2022-07-13 18:23:41,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:23:40" (1/1) ... [2022-07-13 18:23:41,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:23:40" (1/1) ... [2022-07-13 18:23:41,008 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:23:40" (1/1) ... [2022-07-13 18:23:41,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:23:40" (1/1) ... [2022-07-13 18:23:41,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 18:23:41,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 18:23:41,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 18:23:41,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 18:23:41,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:23:40" (1/1) ... [2022-07-13 18:23:41,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:23:41,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:23:41,073 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 18:23:41,088 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 18:23:41,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 18:23:41,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 18:23:41,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 18:23:41,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 18:23:41,216 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 18:23:41,217 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 18:23:41,533 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 18:23:41,538 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 18:23:41,538 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 18:23:41,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:23:41 BoogieIcfgContainer [2022-07-13 18:23:41,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 18:23:41,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 18:23:41,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 18:23:41,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 18:23:41,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:23:40" (1/3) ... [2022-07-13 18:23:41,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b4c6aa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:23:41, skipping insertion in model container [2022-07-13 18:23:41,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:23:40" (2/3) ... [2022-07-13 18:23:41,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b4c6aa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:23:41, skipping insertion in model container [2022-07-13 18:23:41,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:23:41" (3/3) ... [2022-07-13 18:23:41,546 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c [2022-07-13 18:23:41,555 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 18:23:41,555 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 18:23:41,594 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 18:23:41,598 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@3d5e50f8, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@36b5460 [2022-07-13 18:23:41,598 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 18:23:41,601 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 79 states have (on average 1.6708860759493671) internal successors, (132), 80 states have internal predecessors, (132), 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 18:23:41,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-13 18:23:41,606 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:23:41,607 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] [2022-07-13 18:23:41,607 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:23:41,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:23:41,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1546658209, now seen corresponding path program 1 times [2022-07-13 18:23:41,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:23:41,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754794859] [2022-07-13 18:23:41,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:23:41,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:23:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:41,743 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 18:23:41,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:23:41,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754794859] [2022-07-13 18:23:41,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754794859] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:23:41,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:23:41,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:23:41,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568041114] [2022-07-13 18:23:41,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:23:41,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:23:41,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:23:41,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:23:41,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:23:41,768 INFO L87 Difference]: Start difference. First operand has 81 states, 79 states have (on average 1.6708860759493671) internal successors, (132), 80 states have internal predecessors, (132), 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 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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 18:23:41,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:23:41,819 INFO L93 Difference]: Finished difference Result 139 states and 225 transitions. [2022-07-13 18:23:41,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:23:41,821 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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 26 [2022-07-13 18:23:41,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:23:41,827 INFO L225 Difference]: With dead ends: 139 [2022-07-13 18:23:41,827 INFO L226 Difference]: Without dead ends: 77 [2022-07-13 18:23:41,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:23:41,831 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 3 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:23:41,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 472 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:23:41,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-07-13 18:23:41,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-07-13 18:23:41,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.4210526315789473) internal successors, (108), 76 states have internal predecessors, (108), 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 18:23:41,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 108 transitions. [2022-07-13 18:23:41,854 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 108 transitions. Word has length 26 [2022-07-13 18:23:41,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:23:41,854 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 108 transitions. [2022-07-13 18:23:41,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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 18:23:41,855 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 108 transitions. [2022-07-13 18:23:41,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-13 18:23:41,856 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:23:41,856 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] [2022-07-13 18:23:41,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 18:23:41,856 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:23:41,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:23:41,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1146437097, now seen corresponding path program 1 times [2022-07-13 18:23:41,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:23:41,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130403750] [2022-07-13 18:23:41,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:23:41,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:23:41,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:41,950 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 18:23:41,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:23:41,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130403750] [2022-07-13 18:23:41,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130403750] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:23:41,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:23:41,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:23:41,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145472580] [2022-07-13 18:23:41,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:23:41,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:23:41,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:23:41,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:23:41,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:23:41,955 INFO L87 Difference]: Start difference. First operand 77 states and 108 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 18:23:41,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:23:41,981 INFO L93 Difference]: Finished difference Result 173 states and 258 transitions. [2022-07-13 18:23:41,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:23:41,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2022-07-13 18:23:41,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:23:41,984 INFO L225 Difference]: With dead ends: 173 [2022-07-13 18:23:41,986 INFO L226 Difference]: Without dead ends: 119 [2022-07-13 18:23:41,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:23:41,988 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 68 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:23:41,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 223 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:23:41,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-07-13 18:23:41,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 117. [2022-07-13 18:23:42,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.4741379310344827) internal successors, (171), 116 states have internal predecessors, (171), 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 18:23:42,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 171 transitions. [2022-07-13 18:23:42,005 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 171 transitions. Word has length 42 [2022-07-13 18:23:42,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:23:42,007 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 171 transitions. [2022-07-13 18:23:42,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 18:23:42,008 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 171 transitions. [2022-07-13 18:23:42,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-13 18:23:42,011 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:23:42,011 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] [2022-07-13 18:23:42,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 18:23:42,012 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:23:42,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:23:42,013 INFO L85 PathProgramCache]: Analyzing trace with hash 983172312, now seen corresponding path program 1 times [2022-07-13 18:23:42,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:23:42,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24661646] [2022-07-13 18:23:42,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:23:42,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:23:42,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:42,122 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 18:23:42,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:23:42,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24661646] [2022-07-13 18:23:42,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24661646] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:23:42,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:23:42,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:23:42,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785952387] [2022-07-13 18:23:42,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:23:42,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:23:42,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:23:42,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:23:42,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:23:42,128 INFO L87 Difference]: Start difference. First operand 117 states and 171 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 18:23:42,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:23:42,161 INFO L93 Difference]: Finished difference Result 281 states and 427 transitions. [2022-07-13 18:23:42,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:23:42,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 43 [2022-07-13 18:23:42,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:23:42,163 INFO L225 Difference]: With dead ends: 281 [2022-07-13 18:23:42,164 INFO L226 Difference]: Without dead ends: 187 [2022-07-13 18:23:42,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:23:42,167 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 63 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:23:42,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 214 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:23:42,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-07-13 18:23:42,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 185. [2022-07-13 18:23:42,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 1.5) internal successors, (276), 184 states have internal predecessors, (276), 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 18:23:42,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 276 transitions. [2022-07-13 18:23:42,186 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 276 transitions. Word has length 43 [2022-07-13 18:23:42,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:23:42,186 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 276 transitions. [2022-07-13 18:23:42,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 18:23:42,188 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 276 transitions. [2022-07-13 18:23:42,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-13 18:23:42,192 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:23:42,192 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] [2022-07-13 18:23:42,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 18:23:42,192 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:23:42,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:23:42,195 INFO L85 PathProgramCache]: Analyzing trace with hash -14404519, now seen corresponding path program 1 times [2022-07-13 18:23:42,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:23:42,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969826607] [2022-07-13 18:23:42,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:23:42,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:23:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:42,276 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 18:23:42,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:23:42,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969826607] [2022-07-13 18:23:42,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969826607] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:23:42,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:23:42,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:23:42,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676094182] [2022-07-13 18:23:42,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:23:42,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:23:42,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:23:42,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:23:42,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:23:42,279 INFO L87 Difference]: Start difference. First operand 185 states and 276 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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 18:23:42,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:23:42,336 INFO L93 Difference]: Finished difference Result 833 states and 1288 transitions. [2022-07-13 18:23:42,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:23:42,337 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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 44 [2022-07-13 18:23:42,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:23:42,340 INFO L225 Difference]: With dead ends: 833 [2022-07-13 18:23:42,342 INFO L226 Difference]: Without dead ends: 671 [2022-07-13 18:23:42,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 18:23:42,345 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 427 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:23:42,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 588 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:23:42,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2022-07-13 18:23:42,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 345. [2022-07-13 18:23:42,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 1.5116279069767442) internal successors, (520), 344 states have internal predecessors, (520), 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 18:23:42,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 520 transitions. [2022-07-13 18:23:42,398 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 520 transitions. Word has length 44 [2022-07-13 18:23:42,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:23:42,411 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 520 transitions. [2022-07-13 18:23:42,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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 18:23:42,412 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 520 transitions. [2022-07-13 18:23:42,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-13 18:23:42,413 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:23:42,413 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] [2022-07-13 18:23:42,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 18:23:42,414 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:23:42,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:23:42,414 INFO L85 PathProgramCache]: Analyzing trace with hash -829863502, now seen corresponding path program 1 times [2022-07-13 18:23:42,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:23:42,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202192203] [2022-07-13 18:23:42,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:23:42,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:23:42,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:42,540 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 18:23:42,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:23:42,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202192203] [2022-07-13 18:23:42,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202192203] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:23:42,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:23:42,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:23:42,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113173790] [2022-07-13 18:23:42,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:23:42,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:23:42,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:23:42,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:23:42,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:23:42,543 INFO L87 Difference]: Start difference. First operand 345 states and 520 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 18:23:42,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:23:42,625 INFO L93 Difference]: Finished difference Result 1215 states and 1847 transitions. [2022-07-13 18:23:42,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:23:42,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 45 [2022-07-13 18:23:42,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:23:42,631 INFO L225 Difference]: With dead ends: 1215 [2022-07-13 18:23:42,631 INFO L226 Difference]: Without dead ends: 893 [2022-07-13 18:23:42,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:23:42,636 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 248 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:23:42,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 364 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:23:42,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2022-07-13 18:23:42,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 889. [2022-07-13 18:23:42,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 888 states have (on average 1.509009009009009) internal successors, (1340), 888 states have internal predecessors, (1340), 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 18:23:42,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1340 transitions. [2022-07-13 18:23:42,688 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1340 transitions. Word has length 45 [2022-07-13 18:23:42,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:23:42,689 INFO L495 AbstractCegarLoop]: Abstraction has 889 states and 1340 transitions. [2022-07-13 18:23:42,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 18:23:42,691 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1340 transitions. [2022-07-13 18:23:42,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-13 18:23:42,692 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:23:42,692 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:23:42,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 18:23:42,693 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:23:42,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:23:42,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1485202410, now seen corresponding path program 1 times [2022-07-13 18:23:42,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:23:42,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956477338] [2022-07-13 18:23:42,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:23:42,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:23:42,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:42,744 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 18:23:42,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:23:42,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956477338] [2022-07-13 18:23:42,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956477338] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:23:42,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:23:42,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:23:42,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847939283] [2022-07-13 18:23:42,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:23:42,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:23:42,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:23:42,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:23:42,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:23:42,747 INFO L87 Difference]: Start difference. First operand 889 states and 1340 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 18:23:42,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:23:42,832 INFO L93 Difference]: Finished difference Result 2309 states and 3462 transitions. [2022-07-13 18:23:42,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:23:42,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 46 [2022-07-13 18:23:42,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:23:42,838 INFO L225 Difference]: With dead ends: 2309 [2022-07-13 18:23:42,838 INFO L226 Difference]: Without dead ends: 1443 [2022-07-13 18:23:42,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:23:42,842 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 70 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:23:42,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 242 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:23:42,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2022-07-13 18:23:42,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1441. [2022-07-13 18:23:42,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1440 states have (on average 1.4722222222222223) internal successors, (2120), 1440 states have internal predecessors, (2120), 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 18:23:42,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 2120 transitions. [2022-07-13 18:23:42,914 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 2120 transitions. Word has length 46 [2022-07-13 18:23:42,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:23:42,919 INFO L495 AbstractCegarLoop]: Abstraction has 1441 states and 2120 transitions. [2022-07-13 18:23:42,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 18:23:42,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 2120 transitions. [2022-07-13 18:23:42,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-13 18:23:42,920 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:23:42,920 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] [2022-07-13 18:23:42,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 18:23:42,920 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:23:42,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:23:42,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1374629896, now seen corresponding path program 1 times [2022-07-13 18:23:42,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:23:42,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011456822] [2022-07-13 18:23:42,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:23:42,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:23:42,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:43,027 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 18:23:43,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:23:43,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011456822] [2022-07-13 18:23:43,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011456822] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:23:43,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:23:43,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:23:43,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103566857] [2022-07-13 18:23:43,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:23:43,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:23:43,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:23:43,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:23:43,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:23:43,030 INFO L87 Difference]: Start difference. First operand 1441 states and 2120 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 18:23:43,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:23:43,257 INFO L93 Difference]: Finished difference Result 3051 states and 4409 transitions. [2022-07-13 18:23:43,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 18:23:43,258 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 46 [2022-07-13 18:23:43,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:23:43,266 INFO L225 Difference]: With dead ends: 3051 [2022-07-13 18:23:43,266 INFO L226 Difference]: Without dead ends: 3049 [2022-07-13 18:23:43,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:23:43,268 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 234 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:23:43,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 467 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:23:43,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3049 states. [2022-07-13 18:23:43,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3049 to 1585. [2022-07-13 18:23:43,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1584 states have (on average 1.4292929292929293) internal successors, (2264), 1584 states have internal predecessors, (2264), 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 18:23:43,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2264 transitions. [2022-07-13 18:23:43,364 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2264 transitions. Word has length 46 [2022-07-13 18:23:43,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:23:43,364 INFO L495 AbstractCegarLoop]: Abstraction has 1585 states and 2264 transitions. [2022-07-13 18:23:43,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 18:23:43,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2264 transitions. [2022-07-13 18:23:43,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-13 18:23:43,365 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:23:43,365 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] [2022-07-13 18:23:43,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 18:23:43,366 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:23:43,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:23:43,366 INFO L85 PathProgramCache]: Analyzing trace with hash -283567685, now seen corresponding path program 1 times [2022-07-13 18:23:43,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:23:43,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247860937] [2022-07-13 18:23:43,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:23:43,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:23:43,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:43,418 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 18:23:43,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:23:43,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247860937] [2022-07-13 18:23:43,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247860937] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:23:43,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:23:43,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:23:43,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696491368] [2022-07-13 18:23:43,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:23:43,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:23:43,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:23:43,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:23:43,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:23:43,421 INFO L87 Difference]: Start difference. First operand 1585 states and 2264 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 18:23:43,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:23:43,538 INFO L93 Difference]: Finished difference Result 3787 states and 5424 transitions. [2022-07-13 18:23:43,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:23:43,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 47 [2022-07-13 18:23:43,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:23:43,545 INFO L225 Difference]: With dead ends: 3787 [2022-07-13 18:23:43,545 INFO L226 Difference]: Without dead ends: 2225 [2022-07-13 18:23:43,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:23:43,548 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 53 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:23:43,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 187 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:23:43,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2225 states. [2022-07-13 18:23:43,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2225 to 2203. [2022-07-13 18:23:43,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2203 states, 2202 states have (on average 1.4178019981834695) internal successors, (3122), 2202 states have internal predecessors, (3122), 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 18:23:43,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 3122 transitions. [2022-07-13 18:23:43,668 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 3122 transitions. Word has length 47 [2022-07-13 18:23:43,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:23:43,668 INFO L495 AbstractCegarLoop]: Abstraction has 2203 states and 3122 transitions. [2022-07-13 18:23:43,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 18:23:43,668 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 3122 transitions. [2022-07-13 18:23:43,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 18:23:43,670 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:23:43,670 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:23:43,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 18:23:43,670 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:23:43,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:23:43,671 INFO L85 PathProgramCache]: Analyzing trace with hash 613343109, now seen corresponding path program 1 times [2022-07-13 18:23:43,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:23:43,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987284842] [2022-07-13 18:23:43,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:23:43,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:23:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:43,820 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:23:43,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:23:43,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987284842] [2022-07-13 18:23:43,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987284842] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:23:43,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427653927] [2022-07-13 18:23:43,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:23:43,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:23:43,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:23:43,823 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:23:43,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 18:23:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:43,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 18:23:43,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:23:44,172 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 18:23:44,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:23:44,276 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 18:23:44,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427653927] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:23:44,277 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:23:44,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4, 4] total 14 [2022-07-13 18:23:44,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174377697] [2022-07-13 18:23:44,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:23:44,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 18:23:44,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:23:44,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 18:23:44,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-13 18:23:44,279 INFO L87 Difference]: Start difference. First operand 2203 states and 3122 transitions. Second operand has 14 states, 14 states have (on average 13.571428571428571) internal successors, (190), 14 states have internal predecessors, (190), 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 18:23:47,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:23:47,801 INFO L93 Difference]: Finished difference Result 23583 states and 33190 transitions. [2022-07-13 18:23:47,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-07-13 18:23:47,802 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 13.571428571428571) internal successors, (190), 14 states have internal predecessors, (190), 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 68 [2022-07-13 18:23:47,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:23:47,861 INFO L225 Difference]: With dead ends: 23583 [2022-07-13 18:23:47,861 INFO L226 Difference]: Without dead ends: 21405 [2022-07-13 18:23:47,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1976 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1145, Invalid=4555, Unknown=0, NotChecked=0, Total=5700 [2022-07-13 18:23:47,871 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 3111 mSDsluCounter, 2243 mSDsCounter, 0 mSdLazyCounter, 2036 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3111 SdHoareTripleChecker+Valid, 2638 SdHoareTripleChecker+Invalid, 2152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:23:47,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3111 Valid, 2638 Invalid, 2152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2036 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 18:23:47,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21405 states. [2022-07-13 18:23:48,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21405 to 11491. [2022-07-13 18:23:48,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11491 states, 11490 states have (on average 1.3942558746736293) internal successors, (16020), 11490 states have internal predecessors, (16020), 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 18:23:48,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11491 states to 11491 states and 16020 transitions. [2022-07-13 18:23:48,643 INFO L78 Accepts]: Start accepts. Automaton has 11491 states and 16020 transitions. Word has length 68 [2022-07-13 18:23:48,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:23:48,644 INFO L495 AbstractCegarLoop]: Abstraction has 11491 states and 16020 transitions. [2022-07-13 18:23:48,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.571428571428571) internal successors, (190), 14 states have internal predecessors, (190), 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 18:23:48,644 INFO L276 IsEmpty]: Start isEmpty. Operand 11491 states and 16020 transitions. [2022-07-13 18:23:48,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 18:23:48,646 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:23:48,646 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:23:48,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 18:23:48,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:23:48,864 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:23:48,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:23:48,864 INFO L85 PathProgramCache]: Analyzing trace with hash 717525894, now seen corresponding path program 1 times [2022-07-13 18:23:48,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:23:48,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633153382] [2022-07-13 18:23:48,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:23:48,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:23:48,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:48,959 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:23:48,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:23:48,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633153382] [2022-07-13 18:23:48,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633153382] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:23:48,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:23:48,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:23:48,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813327656] [2022-07-13 18:23:48,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:23:48,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:23:48,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:23:48,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:23:48,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:23:48,961 INFO L87 Difference]: Start difference. First operand 11491 states and 16020 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 18:23:49,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:23:49,722 INFO L93 Difference]: Finished difference Result 25344 states and 35256 transitions. [2022-07-13 18:23:49,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:23:49,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 68 [2022-07-13 18:23:49,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:23:49,751 INFO L225 Difference]: With dead ends: 25344 [2022-07-13 18:23:49,752 INFO L226 Difference]: Without dead ends: 17126 [2022-07-13 18:23:49,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:23:49,763 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 55 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:23:49,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 247 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:23:49,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17126 states. [2022-07-13 18:23:50,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17126 to 17124. [2022-07-13 18:23:50,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17124 states, 17123 states have (on average 1.3662325527068855) internal successors, (23394), 17123 states have internal predecessors, (23394), 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 18:23:50,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17124 states to 17124 states and 23394 transitions. [2022-07-13 18:23:50,727 INFO L78 Accepts]: Start accepts. Automaton has 17124 states and 23394 transitions. Word has length 68 [2022-07-13 18:23:50,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:23:50,728 INFO L495 AbstractCegarLoop]: Abstraction has 17124 states and 23394 transitions. [2022-07-13 18:23:50,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 18:23:50,728 INFO L276 IsEmpty]: Start isEmpty. Operand 17124 states and 23394 transitions. [2022-07-13 18:23:50,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 18:23:50,731 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:23:50,731 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:23:50,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 18:23:50,731 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:23:50,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:23:50,732 INFO L85 PathProgramCache]: Analyzing trace with hash -55467066, now seen corresponding path program 1 times [2022-07-13 18:23:50,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:23:50,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049220010] [2022-07-13 18:23:50,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:23:50,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:23:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:50,752 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:23:50,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:23:50,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049220010] [2022-07-13 18:23:50,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049220010] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:23:50,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:23:50,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:23:50,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909599239] [2022-07-13 18:23:50,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:23:50,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:23:50,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:23:50,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:23:50,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:23:50,754 INFO L87 Difference]: Start difference. First operand 17124 states and 23394 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 18:23:51,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:23:51,713 INFO L93 Difference]: Finished difference Result 34411 states and 46718 transitions. [2022-07-13 18:23:51,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:23:51,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 68 [2022-07-13 18:23:51,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:23:51,746 INFO L225 Difference]: With dead ends: 34411 [2022-07-13 18:23:51,746 INFO L226 Difference]: Without dead ends: 23489 [2022-07-13 18:23:51,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:23:51,761 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 52 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:23:51,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 219 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:23:51,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23489 states. [2022-07-13 18:23:53,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23489 to 23487. [2022-07-13 18:23:53,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23487 states, 23486 states have (on average 1.3409690879672997) internal successors, (31494), 23486 states have internal predecessors, (31494), 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 18:23:53,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23487 states to 23487 states and 31494 transitions. [2022-07-13 18:23:53,217 INFO L78 Accepts]: Start accepts. Automaton has 23487 states and 31494 transitions. Word has length 68 [2022-07-13 18:23:53,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:23:53,218 INFO L495 AbstractCegarLoop]: Abstraction has 23487 states and 31494 transitions. [2022-07-13 18:23:53,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 18:23:53,218 INFO L276 IsEmpty]: Start isEmpty. Operand 23487 states and 31494 transitions. [2022-07-13 18:23:53,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 18:23:53,223 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:23:53,224 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:23:53,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 18:23:53,224 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:23:53,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:23:53,224 INFO L85 PathProgramCache]: Analyzing trace with hash 371878998, now seen corresponding path program 1 times [2022-07-13 18:23:53,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:23:53,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33789400] [2022-07-13 18:23:53,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:23:53,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:23:53,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:53,272 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-13 18:23:53,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:23:53,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33789400] [2022-07-13 18:23:53,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33789400] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:23:53,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:23:53,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:23:53,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128750458] [2022-07-13 18:23:53,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:23:53,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:23:53,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:23:53,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:23:53,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:23:53,274 INFO L87 Difference]: Start difference. First operand 23487 states and 31494 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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 18:23:54,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:23:54,689 INFO L93 Difference]: Finished difference Result 41713 states and 56042 transitions. [2022-07-13 18:23:54,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:23:54,690 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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 68 [2022-07-13 18:23:54,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:23:54,740 INFO L225 Difference]: With dead ends: 41713 [2022-07-13 18:23:54,740 INFO L226 Difference]: Without dead ends: 34619 [2022-07-13 18:23:54,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:23:54,756 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 299 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:23:54,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 459 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:23:54,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34619 states. [2022-07-13 18:23:56,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34619 to 30111. [2022-07-13 18:23:56,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30111 states, 30110 states have (on average 1.3350381932912654) internal successors, (40198), 30110 states have internal predecessors, (40198), 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 18:23:56,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30111 states to 30111 states and 40198 transitions. [2022-07-13 18:23:56,504 INFO L78 Accepts]: Start accepts. Automaton has 30111 states and 40198 transitions. Word has length 68 [2022-07-13 18:23:56,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:23:56,505 INFO L495 AbstractCegarLoop]: Abstraction has 30111 states and 40198 transitions. [2022-07-13 18:23:56,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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 18:23:56,505 INFO L276 IsEmpty]: Start isEmpty. Operand 30111 states and 40198 transitions. [2022-07-13 18:23:56,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 18:23:56,509 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:23:56,509 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:23:56,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 18:23:56,510 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:23:56,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:23:56,510 INFO L85 PathProgramCache]: Analyzing trace with hash -846517202, now seen corresponding path program 1 times [2022-07-13 18:23:56,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:23:56,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881938220] [2022-07-13 18:23:56,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:23:56,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:23:56,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:23:56,546 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-13 18:23:56,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:23:56,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881938220] [2022-07-13 18:23:56,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881938220] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:23:56,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:23:56,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:23:56,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350218720] [2022-07-13 18:23:56,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:23:56,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:23:56,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:23:56,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:23:56,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:23:56,548 INFO L87 Difference]: Start difference. First operand 30111 states and 40198 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 18:23:58,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:23:58,687 INFO L93 Difference]: Finished difference Result 51615 states and 69310 transitions. [2022-07-13 18:23:58,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:23:58,688 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 68 [2022-07-13 18:23:58,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:23:58,742 INFO L225 Difference]: With dead ends: 51615 [2022-07-13 18:23:58,743 INFO L226 Difference]: Without dead ends: 41009 [2022-07-13 18:23:58,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:23:58,760 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 296 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:23:58,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 499 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:23:58,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41009 states. [2022-07-13 18:24:00,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41009 to 37991. [2022-07-13 18:24:00,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37991 states, 37990 states have (on average 1.3299289286654383) internal successors, (50524), 37990 states have internal predecessors, (50524), 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 18:24:00,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37991 states to 37991 states and 50524 transitions. [2022-07-13 18:24:00,846 INFO L78 Accepts]: Start accepts. Automaton has 37991 states and 50524 transitions. Word has length 68 [2022-07-13 18:24:00,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:24:00,847 INFO L495 AbstractCegarLoop]: Abstraction has 37991 states and 50524 transitions. [2022-07-13 18:24:00,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 18:24:00,847 INFO L276 IsEmpty]: Start isEmpty. Operand 37991 states and 50524 transitions. [2022-07-13 18:24:00,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-13 18:24:00,851 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:24:00,852 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:24:00,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 18:24:00,852 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:24:00,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:24:00,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1063519862, now seen corresponding path program 1 times [2022-07-13 18:24:00,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:24:00,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570129863] [2022-07-13 18:24:00,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:24:00,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:24:00,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:24:00,894 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 18:24:00,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:24:00,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570129863] [2022-07-13 18:24:00,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570129863] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:24:00,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:24:00,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:24:00,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533754503] [2022-07-13 18:24:00,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:24:00,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:24:00,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:24:00,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:24:00,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:24:00,897 INFO L87 Difference]: Start difference. First operand 37991 states and 50524 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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 18:24:03,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:24:03,051 INFO L93 Difference]: Finished difference Result 50811 states and 67742 transitions. [2022-07-13 18:24:03,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:24:03,052 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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 69 [2022-07-13 18:24:03,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:24:03,104 INFO L225 Difference]: With dead ends: 50811 [2022-07-13 18:24:03,104 INFO L226 Difference]: Without dead ends: 45175 [2022-07-13 18:24:03,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:24:03,118 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 285 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:24:03,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 471 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:24:03,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45175 states. [2022-07-13 18:24:05,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45175 to 42157. [2022-07-13 18:24:05,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42157 states, 42156 states have (on average 1.327355536578423) internal successors, (55956), 42156 states have internal predecessors, (55956), 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 18:24:05,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42157 states to 42157 states and 55956 transitions. [2022-07-13 18:24:05,596 INFO L78 Accepts]: Start accepts. Automaton has 42157 states and 55956 transitions. Word has length 69 [2022-07-13 18:24:05,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:24:05,596 INFO L495 AbstractCegarLoop]: Abstraction has 42157 states and 55956 transitions. [2022-07-13 18:24:05,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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 18:24:05,597 INFO L276 IsEmpty]: Start isEmpty. Operand 42157 states and 55956 transitions. [2022-07-13 18:24:05,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-13 18:24:05,602 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:24:05,602 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:24:05,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 18:24:05,602 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:24:05,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:24:05,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1024312551, now seen corresponding path program 1 times [2022-07-13 18:24:05,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:24:05,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123871177] [2022-07-13 18:24:05,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:24:05,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:24:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:24:05,620 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:24:05,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:24:05,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123871177] [2022-07-13 18:24:05,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123871177] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:24:05,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:24:05,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:24:05,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600210157] [2022-07-13 18:24:05,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:24:05,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:24:05,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:24:05,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:24:05,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:24:05,622 INFO L87 Difference]: Start difference. First operand 42157 states and 55956 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 18:24:08,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:24:08,321 INFO L93 Difference]: Finished difference Result 77153 states and 101929 transitions. [2022-07-13 18:24:08,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:24:08,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 71 [2022-07-13 18:24:08,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:24:08,370 INFO L225 Difference]: With dead ends: 77153 [2022-07-13 18:24:08,370 INFO L226 Difference]: Without dead ends: 43070 [2022-07-13 18:24:08,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:24:08,393 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 51 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:24:08,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 245 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:24:08,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43070 states. [2022-07-13 18:24:10,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43070 to 42234. [2022-07-13 18:24:10,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42234 states, 42233 states have (on average 1.3113678876707788) internal successors, (55383), 42233 states have internal predecessors, (55383), 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 18:24:10,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42234 states to 42234 states and 55383 transitions. [2022-07-13 18:24:10,701 INFO L78 Accepts]: Start accepts. Automaton has 42234 states and 55383 transitions. Word has length 71 [2022-07-13 18:24:10,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:24:10,702 INFO L495 AbstractCegarLoop]: Abstraction has 42234 states and 55383 transitions. [2022-07-13 18:24:10,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 18:24:10,702 INFO L276 IsEmpty]: Start isEmpty. Operand 42234 states and 55383 transitions. [2022-07-13 18:24:10,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-13 18:24:10,731 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:24:10,731 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:24:10,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 18:24:10,732 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:24:10,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:24:10,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1831633139, now seen corresponding path program 1 times [2022-07-13 18:24:10,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:24:10,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069563143] [2022-07-13 18:24:10,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:24:10,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:24:10,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:24:10,772 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:24:10,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:24:10,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069563143] [2022-07-13 18:24:10,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069563143] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:24:10,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:24:10,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:24:10,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782009456] [2022-07-13 18:24:10,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:24:10,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:24:10,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:24:10,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:24:10,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:24:10,775 INFO L87 Difference]: Start difference. First operand 42234 states and 55383 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 18:24:13,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:24:13,029 INFO L93 Difference]: Finished difference Result 66730 states and 87286 transitions. [2022-07-13 18:24:13,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:24:13,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 72 [2022-07-13 18:24:13,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:24:13,081 INFO L225 Difference]: With dead ends: 66730 [2022-07-13 18:24:13,081 INFO L226 Difference]: Without dead ends: 42252 [2022-07-13 18:24:13,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:24:13,100 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 50 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:24:13,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 228 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:24:13,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42252 states. [2022-07-13 18:24:15,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42252 to 35602. [2022-07-13 18:24:15,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35602 states, 35601 states have (on average 1.299485969495239) internal successors, (46263), 35601 states have internal predecessors, (46263), 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 18:24:15,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35602 states to 35602 states and 46263 transitions. [2022-07-13 18:24:15,190 INFO L78 Accepts]: Start accepts. Automaton has 35602 states and 46263 transitions. Word has length 72 [2022-07-13 18:24:15,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:24:15,190 INFO L495 AbstractCegarLoop]: Abstraction has 35602 states and 46263 transitions. [2022-07-13 18:24:15,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 18:24:15,190 INFO L276 IsEmpty]: Start isEmpty. Operand 35602 states and 46263 transitions. [2022-07-13 18:24:15,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-13 18:24:15,211 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:24:15,212 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:24:15,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 18:24:15,212 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:24:15,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:24:15,213 INFO L85 PathProgramCache]: Analyzing trace with hash -689106483, now seen corresponding path program 1 times [2022-07-13 18:24:15,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:24:15,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696202684] [2022-07-13 18:24:15,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:24:15,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:24:15,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:24:15,258 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-13 18:24:15,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:24:15,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696202684] [2022-07-13 18:24:15,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696202684] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:24:15,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:24:15,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:24:15,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037770168] [2022-07-13 18:24:15,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:24:15,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 18:24:15,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:24:15,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 18:24:15,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:24:15,260 INFO L87 Difference]: Start difference. First operand 35602 states and 46263 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 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 18:24:18,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:24:18,262 INFO L93 Difference]: Finished difference Result 88760 states and 115042 transitions. [2022-07-13 18:24:18,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 18:24:18,262 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 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 72 [2022-07-13 18:24:18,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:24:18,337 INFO L225 Difference]: With dead ends: 88760 [2022-07-13 18:24:18,337 INFO L226 Difference]: Without dead ends: 53209 [2022-07-13 18:24:18,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-13 18:24:18,376 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 548 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:24:18,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [548 Valid, 162 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:24:18,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53209 states.