./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f02e9f77b882be24d50c19f50ce800eb05eecbc064c8c6c7833bfe76a90e6ee8 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 18:35:39,930 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 18:35:39,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 18:35:39,950 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 18:35:39,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 18:35:39,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 18:35:39,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 18:35:39,960 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 18:35:39,961 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 18:35:39,962 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 18:35:39,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 18:35:39,964 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 18:35:39,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 18:35:39,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 18:35:39,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 18:35:39,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 18:35:39,971 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 18:35:39,975 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 18:35:39,976 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 18:35:39,979 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 18:35:39,980 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 18:35:39,981 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 18:35:39,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 18:35:39,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 18:35:39,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 18:35:39,984 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 18:35:39,988 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 18:35:39,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 18:35:39,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 18:35:39,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 18:35:39,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 18:35:39,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 18:35:39,991 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 18:35:39,991 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 18:35:39,992 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 18:35:39,993 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 18:35:39,993 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 18:35:39,993 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 18:35:39,994 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 18:35:39,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 18:35:39,994 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 18:35:39,995 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 18:35:39,996 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 18:35:40,013 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 18:35:40,013 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 18:35:40,014 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 18:35:40,014 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 18:35:40,015 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 18:35:40,015 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 18:35:40,015 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 18:35:40,016 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 18:35:40,016 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 18:35:40,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 18:35:40,017 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 18:35:40,017 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 18:35:40,017 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 18:35:40,017 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 18:35:40,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 18:35:40,017 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 18:35:40,017 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 18:35:40,018 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 18:35:40,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 18:35:40,018 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 18:35:40,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 18:35:40,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 18:35:40,019 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 18:35:40,019 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 18:35:40,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:35:40,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 18:35:40,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 18:35:40,020 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 18:35:40,020 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 18:35:40,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 18:35:40,021 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 18:35:40,021 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 18:35:40,021 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 18:35:40,021 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f02e9f77b882be24d50c19f50ce800eb05eecbc064c8c6c7833bfe76a90e6ee8 [2022-07-13 18:35:40,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 18:35:40,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 18:35:40,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 18:35:40,228 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 18:35:40,228 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 18:35:40,229 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-13 18:35:40,275 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/593799012/e81f4ff551f945a4a02878fb3d00c4b7/FLAGfb750ea89 [2022-07-13 18:35:40,648 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 18:35:40,649 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-13 18:35:40,659 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/593799012/e81f4ff551f945a4a02878fb3d00c4b7/FLAGfb750ea89 [2022-07-13 18:35:40,668 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/593799012/e81f4ff551f945a4a02878fb3d00c4b7 [2022-07-13 18:35:40,670 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 18:35:40,671 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 18:35:40,672 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 18:35:40,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 18:35:40,674 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 18:35:40,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:35:40" (1/1) ... [2022-07-13 18:35:40,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b6253cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:35:40, skipping insertion in model container [2022-07-13 18:35:40,675 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:35:40" (1/1) ... [2022-07-13 18:35:40,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 18:35:40,719 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 18:35:40,957 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[14419,14432] [2022-07-13 18:35:40,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:35:41,017 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 18:35:41,088 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[14419,14432] [2022-07-13 18:35:41,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:35:41,132 INFO L208 MainTranslator]: Completed translation [2022-07-13 18:35:41,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:35:41 WrapperNode [2022-07-13 18:35:41,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 18:35:41,134 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 18:35:41,134 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 18:35:41,134 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 18:35:41,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:35:41" (1/1) ... [2022-07-13 18:35:41,149 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:35:41" (1/1) ... [2022-07-13 18:35:41,192 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1181 [2022-07-13 18:35:41,192 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 18:35:41,193 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 18:35:41,193 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 18:35:41,193 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 18:35:41,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:35:41" (1/1) ... [2022-07-13 18:35:41,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:35:41" (1/1) ... [2022-07-13 18:35:41,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:35:41" (1/1) ... [2022-07-13 18:35:41,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:35:41" (1/1) ... [2022-07-13 18:35:41,215 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:35:41" (1/1) ... [2022-07-13 18:35:41,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:35:41" (1/1) ... [2022-07-13 18:35:41,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:35:41" (1/1) ... [2022-07-13 18:35:41,228 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 18:35:41,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 18:35:41,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 18:35:41,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 18:35:41,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:35:41" (1/1) ... [2022-07-13 18:35:41,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:35:41,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:35:41,274 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 18:35:41,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 18:35:41,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 18:35:41,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 18:35:41,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 18:35:41,292 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 18:35:41,432 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 18:35:41,433 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 18:35:42,142 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 18:35:42,153 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 18:35:42,153 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 18:35:42,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:35:42 BoogieIcfgContainer [2022-07-13 18:35:42,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 18:35:42,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 18:35:42,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 18:35:42,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 18:35:42,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:35:40" (1/3) ... [2022-07-13 18:35:42,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77fe69f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:35:42, skipping insertion in model container [2022-07-13 18:35:42,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:35:41" (2/3) ... [2022-07-13 18:35:42,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77fe69f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:35:42, skipping insertion in model container [2022-07-13 18:35:42,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:35:42" (3/3) ... [2022-07-13 18:35:42,164 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-13 18:35:42,174 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 18:35:42,174 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 18:35:42,222 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 18:35:42,226 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@13a36f08, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@a4d8d63 [2022-07-13 18:35:42,226 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 18:35:42,230 INFO L276 IsEmpty]: Start isEmpty. Operand has 312 states, 310 states have (on average 1.7806451612903227) internal successors, (552), 311 states have internal predecessors, (552), 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 18:35:42,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 18:35:42,248 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:35:42,248 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:42,249 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:35:42,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:35:42,254 INFO L85 PathProgramCache]: Analyzing trace with hash 811765820, now seen corresponding path program 1 times [2022-07-13 18:35:42,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:35:42,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011699200] [2022-07-13 18:35:42,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:35:42,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:35:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:35:42,631 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 18:35:42,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:35:42,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011699200] [2022-07-13 18:35:42,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011699200] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:35:42,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:35:42,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:35:42,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863230153] [2022-07-13 18:35:42,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:35:42,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:35:42,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:35:42,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:35:42,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:35:42,659 INFO L87 Difference]: Start difference. First operand has 312 states, 310 states have (on average 1.7806451612903227) internal successors, (552), 311 states have internal predecessors, (552), 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 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 18:35:42,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:35:42,783 INFO L93 Difference]: Finished difference Result 634 states and 1113 transitions. [2022-07-13 18:35:42,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:35:42,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 146 [2022-07-13 18:35:42,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:35:42,796 INFO L225 Difference]: With dead ends: 634 [2022-07-13 18:35:42,796 INFO L226 Difference]: Without dead ends: 510 [2022-07-13 18:35:42,805 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 18:35:42,807 INFO L413 NwaCegarLoop]: 521 mSDtfsCounter, 372 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:35:42,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 919 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:35:42,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2022-07-13 18:35:42,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 508. [2022-07-13 18:35:42,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 507 states have (on average 1.4930966469428009) internal successors, (757), 507 states have internal predecessors, (757), 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 18:35:42,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 757 transitions. [2022-07-13 18:35:42,874 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 757 transitions. Word has length 146 [2022-07-13 18:35:42,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:35:42,875 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 757 transitions. [2022-07-13 18:35:42,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 18:35:42,875 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 757 transitions. [2022-07-13 18:35:42,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 18:35:42,878 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:35:42,878 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:42,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 18:35:42,879 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:35:42,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:35:42,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1665088068, now seen corresponding path program 1 times [2022-07-13 18:35:42,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:35:42,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685672667] [2022-07-13 18:35:42,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:35:42,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:35:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:35:43,012 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 18:35:43,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:35:43,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685672667] [2022-07-13 18:35:43,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685672667] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:35:43,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:35:43,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:35:43,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821396308] [2022-07-13 18:35:43,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:35:43,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:35:43,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:35:43,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:35:43,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:35:43,015 INFO L87 Difference]: Start difference. First operand 508 states and 757 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 18:35:43,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:35:43,113 INFO L93 Difference]: Finished difference Result 1104 states and 1692 transitions. [2022-07-13 18:35:43,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:35:43,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 146 [2022-07-13 18:35:43,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:35:43,117 INFO L225 Difference]: With dead ends: 1104 [2022-07-13 18:35:43,117 INFO L226 Difference]: Without dead ends: 894 [2022-07-13 18:35:43,123 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 18:35:43,124 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 283 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:35:43,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 746 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:35:43,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2022-07-13 18:35:43,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 892. [2022-07-13 18:35:43,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 892 states, 891 states have (on average 1.505050505050505) internal successors, (1341), 891 states have internal predecessors, (1341), 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 18:35:43,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1341 transitions. [2022-07-13 18:35:43,178 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1341 transitions. Word has length 146 [2022-07-13 18:35:43,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:35:43,180 INFO L495 AbstractCegarLoop]: Abstraction has 892 states and 1341 transitions. [2022-07-13 18:35:43,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 18:35:43,180 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1341 transitions. [2022-07-13 18:35:43,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 18:35:43,189 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:35:43,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:43,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 18:35:43,196 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:35:43,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:35:43,197 INFO L85 PathProgramCache]: Analyzing trace with hash -2001145712, now seen corresponding path program 1 times [2022-07-13 18:35:43,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:35:43,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079644458] [2022-07-13 18:35:43,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:35:43,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:35:43,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:35:43,391 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 18:35:43,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:35:43,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079644458] [2022-07-13 18:35:43,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079644458] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:35:43,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:35:43,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:35:43,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948205879] [2022-07-13 18:35:43,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:35:43,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:35:43,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:35:43,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:35:43,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:35:43,392 INFO L87 Difference]: Start difference. First operand 892 states and 1341 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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 18:35:43,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:35:43,546 INFO L93 Difference]: Finished difference Result 2611 states and 3916 transitions. [2022-07-13 18:35:43,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:35:43,547 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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 146 [2022-07-13 18:35:43,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:35:43,553 INFO L225 Difference]: With dead ends: 2611 [2022-07-13 18:35:43,553 INFO L226 Difference]: Without dead ends: 1728 [2022-07-13 18:35:43,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:35:43,559 INFO L413 NwaCegarLoop]: 778 mSDtfsCounter, 905 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:35:43,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 1185 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:35:43,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2022-07-13 18:35:43,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1726. [2022-07-13 18:35:43,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1725 states have (on average 1.488695652173913) internal successors, (2568), 1725 states have internal predecessors, (2568), 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 18:35:43,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2568 transitions. [2022-07-13 18:35:43,652 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2568 transitions. Word has length 146 [2022-07-13 18:35:43,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:35:43,652 INFO L495 AbstractCegarLoop]: Abstraction has 1726 states and 2568 transitions. [2022-07-13 18:35:43,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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 18:35:43,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2568 transitions. [2022-07-13 18:35:43,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-13 18:35:43,654 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:35:43,654 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:43,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 18:35:43,655 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:35:43,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:35:43,655 INFO L85 PathProgramCache]: Analyzing trace with hash -153017852, now seen corresponding path program 1 times [2022-07-13 18:35:43,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:35:43,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537660566] [2022-07-13 18:35:43,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:35:43,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:35:43,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:35:43,704 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 18:35:43,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:35:43,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537660566] [2022-07-13 18:35:43,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537660566] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:35:43,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:35:43,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:35:43,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619249682] [2022-07-13 18:35:43,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:35:43,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:35:43,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:35:43,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:35:43,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:35:43,707 INFO L87 Difference]: Start difference. First operand 1726 states and 2568 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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 18:35:43,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:35:43,865 INFO L93 Difference]: Finished difference Result 5140 states and 7642 transitions. [2022-07-13 18:35:43,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:35:43,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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 147 [2022-07-13 18:35:43,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:35:43,881 INFO L225 Difference]: With dead ends: 5140 [2022-07-13 18:35:43,881 INFO L226 Difference]: Without dead ends: 3442 [2022-07-13 18:35:43,884 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 18:35:43,884 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 442 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:35:43,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 963 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:35:43,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3442 states. [2022-07-13 18:35:43,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3442 to 1728. [2022-07-13 18:35:44,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1728 states, 1727 states have (on average 1.4881297046902142) internal successors, (2570), 1727 states have internal predecessors, (2570), 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 18:35:44,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1728 states to 1728 states and 2570 transitions. [2022-07-13 18:35:44,006 INFO L78 Accepts]: Start accepts. Automaton has 1728 states and 2570 transitions. Word has length 147 [2022-07-13 18:35:44,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:35:44,006 INFO L495 AbstractCegarLoop]: Abstraction has 1728 states and 2570 transitions. [2022-07-13 18:35:44,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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 18:35:44,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1728 states and 2570 transitions. [2022-07-13 18:35:44,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-13 18:35:44,008 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:35:44,008 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:44,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 18:35:44,009 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:35:44,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:35:44,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1214315247, now seen corresponding path program 1 times [2022-07-13 18:35:44,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:35:44,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130458752] [2022-07-13 18:35:44,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:35:44,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:35:44,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:35:44,118 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 18:35:44,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:35:44,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130458752] [2022-07-13 18:35:44,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130458752] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:35:44,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:35:44,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:35:44,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192716998] [2022-07-13 18:35:44,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:35:44,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:35:44,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:35:44,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:35:44,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:35:44,122 INFO L87 Difference]: Start difference. First operand 1728 states and 2570 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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 18:35:44,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:35:44,354 INFO L93 Difference]: Finished difference Result 5036 states and 7470 transitions. [2022-07-13 18:35:44,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:35:44,355 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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 148 [2022-07-13 18:35:44,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:35:44,365 INFO L225 Difference]: With dead ends: 5036 [2022-07-13 18:35:44,365 INFO L226 Difference]: Without dead ends: 3338 [2022-07-13 18:35:44,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:35:44,368 INFO L413 NwaCegarLoop]: 759 mSDtfsCounter, 889 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:35:44,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 1166 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:35:44,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3338 states. [2022-07-13 18:35:44,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3338 to 3336. [2022-07-13 18:35:44,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3336 states, 3335 states have (on average 1.471664167916042) internal successors, (4908), 3335 states have internal predecessors, (4908), 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 18:35:44,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3336 states to 3336 states and 4908 transitions. [2022-07-13 18:35:44,542 INFO L78 Accepts]: Start accepts. Automaton has 3336 states and 4908 transitions. Word has length 148 [2022-07-13 18:35:44,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:35:44,543 INFO L495 AbstractCegarLoop]: Abstraction has 3336 states and 4908 transitions. [2022-07-13 18:35:44,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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 18:35:44,546 INFO L276 IsEmpty]: Start isEmpty. Operand 3336 states and 4908 transitions. [2022-07-13 18:35:44,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-13 18:35:44,550 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:35:44,550 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:44,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 18:35:44,551 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:35:44,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:35:44,552 INFO L85 PathProgramCache]: Analyzing trace with hash 568493541, now seen corresponding path program 1 times [2022-07-13 18:35:44,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:35:44,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561801857] [2022-07-13 18:35:44,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:35:44,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:35:44,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:35:44,587 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 18:35:44,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:35:44,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561801857] [2022-07-13 18:35:44,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561801857] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:35:44,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:35:44,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:35:44,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014844810] [2022-07-13 18:35:44,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:35:44,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:35:44,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:35:44,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:35:44,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:35:44,589 INFO L87 Difference]: Start difference. First operand 3336 states and 4908 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 18:35:44,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:35:44,895 INFO L93 Difference]: Finished difference Result 9932 states and 14604 transitions. [2022-07-13 18:35:44,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:35:44,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 149 [2022-07-13 18:35:44,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:35:44,914 INFO L225 Difference]: With dead ends: 9932 [2022-07-13 18:35:44,914 INFO L226 Difference]: Without dead ends: 6640 [2022-07-13 18:35:44,920 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 18:35:44,921 INFO L413 NwaCegarLoop]: 524 mSDtfsCounter, 428 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:35:44,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 968 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:35:44,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6640 states. [2022-07-13 18:35:45,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6640 to 3340. [2022-07-13 18:35:45,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3340 states, 3339 states have (on average 1.47109913147649) internal successors, (4912), 3339 states have internal predecessors, (4912), 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 18:35:45,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3340 states to 3340 states and 4912 transitions. [2022-07-13 18:35:45,165 INFO L78 Accepts]: Start accepts. Automaton has 3340 states and 4912 transitions. Word has length 149 [2022-07-13 18:35:45,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:35:45,165 INFO L495 AbstractCegarLoop]: Abstraction has 3340 states and 4912 transitions. [2022-07-13 18:35:45,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 18:35:45,166 INFO L276 IsEmpty]: Start isEmpty. Operand 3340 states and 4912 transitions. [2022-07-13 18:35:45,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-13 18:35:45,169 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:35:45,169 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:45,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 18:35:45,170 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:35:45,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:35:45,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1727483410, now seen corresponding path program 1 times [2022-07-13 18:35:45,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:35:45,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109182397] [2022-07-13 18:35:45,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:35:45,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:35:45,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:35:45,282 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 18:35:45,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:35:45,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109182397] [2022-07-13 18:35:45,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109182397] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:35:45,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:35:45,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:35:45,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20602792] [2022-07-13 18:35:45,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:35:45,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:35:45,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:35:45,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:35:45,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:35:45,285 INFO L87 Difference]: Start difference. First operand 3340 states and 4912 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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 18:35:45,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:35:45,684 INFO L93 Difference]: Finished difference Result 9071 states and 13289 transitions. [2022-07-13 18:35:45,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:35:45,685 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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 150 [2022-07-13 18:35:45,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:35:45,701 INFO L225 Difference]: With dead ends: 9071 [2022-07-13 18:35:45,702 INFO L226 Difference]: Without dead ends: 5779 [2022-07-13 18:35:45,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:35:45,708 INFO L413 NwaCegarLoop]: 747 mSDtfsCounter, 884 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:35:45,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 1154 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:35:45,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5779 states. [2022-07-13 18:35:46,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5779 to 5777. [2022-07-13 18:35:46,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5777 states, 5776 states have (on average 1.4485803324099722) internal successors, (8367), 5776 states have internal predecessors, (8367), 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 18:35:46,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5777 states to 5777 states and 8367 transitions. [2022-07-13 18:35:46,153 INFO L78 Accepts]: Start accepts. Automaton has 5777 states and 8367 transitions. Word has length 150 [2022-07-13 18:35:46,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:35:46,153 INFO L495 AbstractCegarLoop]: Abstraction has 5777 states and 8367 transitions. [2022-07-13 18:35:46,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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 18:35:46,153 INFO L276 IsEmpty]: Start isEmpty. Operand 5777 states and 8367 transitions. [2022-07-13 18:35:46,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-13 18:35:46,159 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:35:46,159 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:46,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 18:35:46,160 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:35:46,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:35:46,160 INFO L85 PathProgramCache]: Analyzing trace with hash 982054470, now seen corresponding path program 1 times [2022-07-13 18:35:46,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:35:46,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008138405] [2022-07-13 18:35:46,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:35:46,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:35:46,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:35:46,188 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 18:35:46,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:35:46,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008138405] [2022-07-13 18:35:46,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008138405] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:35:46,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:35:46,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:35:46,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439582070] [2022-07-13 18:35:46,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:35:46,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:35:46,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:35:46,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:35:46,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:35:46,190 INFO L87 Difference]: Start difference. First operand 5777 states and 8367 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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 18:35:46,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:35:46,833 INFO L93 Difference]: Finished difference Result 16923 states and 24559 transitions. [2022-07-13 18:35:46,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:35:46,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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 151 [2022-07-13 18:35:46,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:35:46,870 INFO L225 Difference]: With dead ends: 16923 [2022-07-13 18:35:46,871 INFO L226 Difference]: Without dead ends: 11462 [2022-07-13 18:35:46,878 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 18:35:46,879 INFO L413 NwaCegarLoop]: 864 mSDtfsCounter, 414 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:35:46,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 1308 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:35:46,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11462 states. [2022-07-13 18:35:47,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11462 to 5785. [2022-07-13 18:35:47,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5785 states, 5784 states have (on average 1.4479598893499308) internal successors, (8375), 5784 states have internal predecessors, (8375), 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 18:35:47,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5785 states to 5785 states and 8375 transitions. [2022-07-13 18:35:47,412 INFO L78 Accepts]: Start accepts. Automaton has 5785 states and 8375 transitions. Word has length 151 [2022-07-13 18:35:47,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:35:47,412 INFO L495 AbstractCegarLoop]: Abstraction has 5785 states and 8375 transitions. [2022-07-13 18:35:47,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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 18:35:47,412 INFO L276 IsEmpty]: Start isEmpty. Operand 5785 states and 8375 transitions. [2022-07-13 18:35:47,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-13 18:35:47,418 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:35:47,418 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:47,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 18:35:47,419 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:35:47,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:35:47,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1043523012, now seen corresponding path program 1 times [2022-07-13 18:35:47,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:35:47,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067475064] [2022-07-13 18:35:47,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:35:47,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:35:47,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:35:47,499 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 18:35:47,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:35:47,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067475064] [2022-07-13 18:35:47,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067475064] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:35:47,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:35:47,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:35:47,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697876114] [2022-07-13 18:35:47,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:35:47,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:35:47,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:35:47,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:35:47,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:35:47,500 INFO L87 Difference]: Start difference. First operand 5785 states and 8375 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 18:35:48,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:35:48,285 INFO L93 Difference]: Finished difference Result 15762 states and 22719 transitions. [2022-07-13 18:35:48,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:35:48,285 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 152 [2022-07-13 18:35:48,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:35:48,302 INFO L225 Difference]: With dead ends: 15762 [2022-07-13 18:35:48,303 INFO L226 Difference]: Without dead ends: 10065 [2022-07-13 18:35:48,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:35:48,311 INFO L413 NwaCegarLoop]: 755 mSDtfsCounter, 831 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:35:48,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 1569 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:35:48,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10065 states. [2022-07-13 18:35:48,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10065 to 10063. [2022-07-13 18:35:48,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10063 states, 10062 states have (on average 1.4234744583581793) internal successors, (14323), 10062 states have internal predecessors, (14323), 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 18:35:49,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10063 states to 10063 states and 14323 transitions. [2022-07-13 18:35:49,009 INFO L78 Accepts]: Start accepts. Automaton has 10063 states and 14323 transitions. Word has length 152 [2022-07-13 18:35:49,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:35:49,009 INFO L495 AbstractCegarLoop]: Abstraction has 10063 states and 14323 transitions. [2022-07-13 18:35:49,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 18:35:49,010 INFO L276 IsEmpty]: Start isEmpty. Operand 10063 states and 14323 transitions. [2022-07-13 18:35:49,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-13 18:35:49,030 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:35:49,030 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:49,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 18:35:49,031 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:35:49,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:35:49,032 INFO L85 PathProgramCache]: Analyzing trace with hash -333116525, now seen corresponding path program 1 times [2022-07-13 18:35:49,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:35:49,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189066608] [2022-07-13 18:35:49,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:35:49,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:35:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:35:49,098 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 18:35:49,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:35:49,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189066608] [2022-07-13 18:35:49,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189066608] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:35:49,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:35:49,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:35:49,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232383560] [2022-07-13 18:35:49,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:35:49,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:35:49,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:35:49,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:35:49,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:35:49,100 INFO L87 Difference]: Start difference. First operand 10063 states and 14323 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 18:35:49,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:35:49,761 INFO L93 Difference]: Finished difference Result 18550 states and 26416 transitions. [2022-07-13 18:35:49,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:35:49,762 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 152 [2022-07-13 18:35:49,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:35:49,774 INFO L225 Difference]: With dead ends: 18550 [2022-07-13 18:35:49,775 INFO L226 Difference]: Without dead ends: 8561 [2022-07-13 18:35:49,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:35:49,786 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 65 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:35:49,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1390 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:35:49,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8561 states. [2022-07-13 18:35:50,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8561 to 8561. [2022-07-13 18:35:50,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8561 states, 8560 states have (on average 1.424766355140187) internal successors, (12196), 8560 states have internal predecessors, (12196), 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 18:35:50,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8561 states to 8561 states and 12196 transitions. [2022-07-13 18:35:50,548 INFO L78 Accepts]: Start accepts. Automaton has 8561 states and 12196 transitions. Word has length 152 [2022-07-13 18:35:50,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:35:50,548 INFO L495 AbstractCegarLoop]: Abstraction has 8561 states and 12196 transitions. [2022-07-13 18:35:50,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 18:35:50,549 INFO L276 IsEmpty]: Start isEmpty. Operand 8561 states and 12196 transitions. [2022-07-13 18:35:50,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-13 18:35:50,557 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:35:50,557 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:50,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 18:35:50,558 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:35:50,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:35:50,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1970649822, now seen corresponding path program 1 times [2022-07-13 18:35:50,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:35:50,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990070816] [2022-07-13 18:35:50,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:35:50,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:35:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:35:50,604 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 18:35:50,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:35:50,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990070816] [2022-07-13 18:35:50,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990070816] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:35:50,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:35:50,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:35:50,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926716789] [2022-07-13 18:35:50,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:35:50,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:35:50,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:35:50,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:35:50,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:35:50,607 INFO L87 Difference]: Start difference. First operand 8561 states and 12196 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 18:35:51,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:35:51,833 INFO L93 Difference]: Finished difference Result 23111 states and 33322 transitions. [2022-07-13 18:35:51,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:35:51,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 158 [2022-07-13 18:35:51,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:35:51,865 INFO L225 Difference]: With dead ends: 23111 [2022-07-13 18:35:51,865 INFO L226 Difference]: Without dead ends: 15939 [2022-07-13 18:35:51,877 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 18:35:51,878 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 306 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:35:51,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 778 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:35:51,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15939 states. [2022-07-13 18:35:53,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15939 to 15937. [2022-07-13 18:35:53,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15937 states, 15936 states have (on average 1.4254518072289157) internal successors, (22716), 15936 states have internal predecessors, (22716), 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 18:35:53,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15937 states to 15937 states and 22716 transitions. [2022-07-13 18:35:53,071 INFO L78 Accepts]: Start accepts. Automaton has 15937 states and 22716 transitions. Word has length 158 [2022-07-13 18:35:53,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:35:53,071 INFO L495 AbstractCegarLoop]: Abstraction has 15937 states and 22716 transitions. [2022-07-13 18:35:53,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 18:35:53,072 INFO L276 IsEmpty]: Start isEmpty. Operand 15937 states and 22716 transitions. [2022-07-13 18:35:53,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-13 18:35:53,085 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:35:53,086 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:53,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 18:35:53,086 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:35:53,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:35:53,087 INFO L85 PathProgramCache]: Analyzing trace with hash 242334909, now seen corresponding path program 1 times [2022-07-13 18:35:53,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:35:53,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059923279] [2022-07-13 18:35:53,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:35:53,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:35:53,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:35:53,148 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 18:35:53,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:35:53,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059923279] [2022-07-13 18:35:53,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059923279] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:35:53,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:35:53,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:35:53,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642988964] [2022-07-13 18:35:53,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:35:53,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:35:53,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:35:53,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:35:53,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:35:53,151 INFO L87 Difference]: Start difference. First operand 15937 states and 22716 transitions. Second operand has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 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 18:35:55,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:35:55,806 INFO L93 Difference]: Finished difference Result 34001 states and 51958 transitions. [2022-07-13 18:35:55,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:35:55,806 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 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 158 [2022-07-13 18:35:55,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:35:55,849 INFO L225 Difference]: With dead ends: 34001 [2022-07-13 18:35:55,850 INFO L226 Difference]: Without dead ends: 27797 [2022-07-13 18:35:55,860 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 18:35:55,861 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 1004 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 1413 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:35:55,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1004 Valid, 1413 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:35:55,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27797 states. [2022-07-13 18:35:57,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27797 to 22427. [2022-07-13 18:35:57,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22427 states, 22426 states have (on average 1.4789975920806206) internal successors, (33168), 22426 states have internal predecessors, (33168), 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 18:35:57,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22427 states to 22427 states and 33168 transitions. [2022-07-13 18:35:57,774 INFO L78 Accepts]: Start accepts. Automaton has 22427 states and 33168 transitions. Word has length 158 [2022-07-13 18:35:57,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:35:57,774 INFO L495 AbstractCegarLoop]: Abstraction has 22427 states and 33168 transitions. [2022-07-13 18:35:57,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 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 18:35:57,775 INFO L276 IsEmpty]: Start isEmpty. Operand 22427 states and 33168 transitions. [2022-07-13 18:35:57,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-13 18:35:57,788 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:35:57,788 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:57,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 18:35:57,789 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:35:57,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:35:57,789 INFO L85 PathProgramCache]: Analyzing trace with hash 76678749, now seen corresponding path program 1 times [2022-07-13 18:35:57,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:35:57,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548934568] [2022-07-13 18:35:57,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:35:57,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:35:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:35:57,837 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 18:35:57,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:35:57,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548934568] [2022-07-13 18:35:57,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548934568] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:35:57,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:35:57,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:35:57,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263345573] [2022-07-13 18:35:57,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:35:57,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:35:57,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:35:57,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:35:57,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:35:57,839 INFO L87 Difference]: Start difference. First operand 22427 states and 33168 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 18:36:01,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:36:01,178 INFO L93 Difference]: Finished difference Result 52446 states and 79337 transitions. [2022-07-13 18:36:01,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:36:01,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 158 [2022-07-13 18:36:01,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:36:01,240 INFO L225 Difference]: With dead ends: 52446 [2022-07-13 18:36:01,240 INFO L226 Difference]: Without dead ends: 38996 [2022-07-13 18:36:01,264 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 18:36:01,269 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 268 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:36:01,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 730 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:36:01,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38996 states. [2022-07-13 18:36:04,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38996 to 38994. [2022-07-13 18:36:04,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38994 states, 38993 states have (on average 1.474341548483061) internal successors, (57489), 38993 states have internal predecessors, (57489), 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 18:36:04,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38994 states to 38994 states and 57489 transitions. [2022-07-13 18:36:04,808 INFO L78 Accepts]: Start accepts. Automaton has 38994 states and 57489 transitions. Word has length 158 [2022-07-13 18:36:04,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:36:04,808 INFO L495 AbstractCegarLoop]: Abstraction has 38994 states and 57489 transitions. [2022-07-13 18:36:04,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 18:36:04,808 INFO L276 IsEmpty]: Start isEmpty. Operand 38994 states and 57489 transitions. [2022-07-13 18:36:04,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-13 18:36:04,830 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:36:04,831 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:36:04,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 18:36:04,831 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:36:04,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:36:04,831 INFO L85 PathProgramCache]: Analyzing trace with hash 871068425, now seen corresponding path program 1 times [2022-07-13 18:36:04,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:36:04,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595663860] [2022-07-13 18:36:04,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:36:04,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:36:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:36:04,966 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 18:36:04,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:36:04,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595663860] [2022-07-13 18:36:04,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595663860] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:36:04,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:36:04,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 18:36:04,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493222287] [2022-07-13 18:36:04,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:36:04,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 18:36:04,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:36:04,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 18:36:04,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:36:04,968 INFO L87 Difference]: Start difference. First operand 38994 states and 57489 transitions. Second operand has 8 states, 8 states have (on average 19.75) internal successors, (158), 8 states have internal predecessors, (158), 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 18:36:08,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:36:08,292 INFO L93 Difference]: Finished difference Result 53202 states and 80177 transitions. [2022-07-13 18:36:08,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:36:08,293 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.75) internal successors, (158), 8 states have internal predecessors, (158), 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 158 [2022-07-13 18:36:08,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:36:08,361 INFO L225 Difference]: With dead ends: 53202 [2022-07-13 18:36:08,362 INFO L226 Difference]: Without dead ends: 38996 [2022-07-13 18:36:08,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-07-13 18:36:08,387 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 2321 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2321 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:36:08,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2321 Valid, 1264 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:36:08,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38996 states. [2022-07-13 18:36:12,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38996 to 38994. [2022-07-13 18:36:12,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38994 states, 38993 states have (on average 1.4668017336445003) internal successors, (57195), 38993 states have internal predecessors, (57195), 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 18:36:12,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38994 states to 38994 states and 57195 transitions. [2022-07-13 18:36:12,312 INFO L78 Accepts]: Start accepts. Automaton has 38994 states and 57195 transitions. Word has length 158 [2022-07-13 18:36:12,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:36:12,312 INFO L495 AbstractCegarLoop]: Abstraction has 38994 states and 57195 transitions. [2022-07-13 18:36:12,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.75) internal successors, (158), 8 states have internal predecessors, (158), 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 18:36:12,313 INFO L276 IsEmpty]: Start isEmpty. Operand 38994 states and 57195 transitions. [2022-07-13 18:36:12,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-13 18:36:12,332 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:36:12,333 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:36:12,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 18:36:12,333 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:36:12,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:36:12,333 INFO L85 PathProgramCache]: Analyzing trace with hash 331313387, now seen corresponding path program 1 times [2022-07-13 18:36:12,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:36:12,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618174353] [2022-07-13 18:36:12,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:36:12,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:36:12,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:36:12,433 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 18:36:12,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:36:12,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618174353] [2022-07-13 18:36:12,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618174353] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:36:12,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:36:12,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:36:12,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302977540] [2022-07-13 18:36:12,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:36:12,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:36:12,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:36:12,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:36:12,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:36:12,435 INFO L87 Difference]: Start difference. First operand 38994 states and 57195 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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 18:36:18,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:36:18,553 INFO L93 Difference]: Finished difference Result 102444 states and 150132 transitions. [2022-07-13 18:36:18,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 18:36:18,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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 158 [2022-07-13 18:36:18,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:36:18,671 INFO L225 Difference]: With dead ends: 102444 [2022-07-13 18:36:18,671 INFO L226 Difference]: Without dead ends: 63584 [2022-07-13 18:36:18,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:36:18,714 INFO L413 NwaCegarLoop]: 763 mSDtfsCounter, 890 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:36:18,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 1162 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:36:18,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63584 states. [2022-07-13 18:36:25,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63584 to 63582. [2022-07-13 18:36:25,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63582 states, 63581 states have (on average 1.4484987653544297) internal successors, (92097), 63581 states have internal predecessors, (92097), 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 18:36:25,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63582 states to 63582 states and 92097 transitions. [2022-07-13 18:36:25,582 INFO L78 Accepts]: Start accepts. Automaton has 63582 states and 92097 transitions. Word has length 158 [2022-07-13 18:36:25,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:36:25,582 INFO L495 AbstractCegarLoop]: Abstraction has 63582 states and 92097 transitions. [2022-07-13 18:36:25,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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 18:36:25,583 INFO L276 IsEmpty]: Start isEmpty. Operand 63582 states and 92097 transitions. [2022-07-13 18:36:25,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-13 18:36:25,616 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:36:25,616 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:36:25,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 18:36:25,616 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:36:25,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:36:25,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1081823353, now seen corresponding path program 1 times [2022-07-13 18:36:25,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:36:25,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667806294] [2022-07-13 18:36:25,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:36:25,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:36:25,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:36:25,671 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 18:36:25,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:36:25,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667806294] [2022-07-13 18:36:25,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667806294] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:36:25,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:36:25,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:36:25,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751075254] [2022-07-13 18:36:25,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:36:25,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 18:36:25,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:36:25,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 18:36:25,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 18:36:25,673 INFO L87 Difference]: Start difference. First operand 63582 states and 92097 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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)