./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.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 c39b660f273ecbdfa60a013e46dad0637949d26902d1f41ae3834ad8e3310564 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 18:06:15,832 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 18:06:15,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 18:06:15,880 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 18:06:15,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 18:06:15,882 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 18:06:15,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 18:06:15,886 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 18:06:15,888 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 18:06:15,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 18:06:15,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 18:06:15,891 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 18:06:15,892 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 18:06:15,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 18:06:15,899 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 18:06:15,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 18:06:15,904 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 18:06:15,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 18:06:15,907 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 18:06:15,908 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 18:06:15,913 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 18:06:15,914 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 18:06:15,915 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 18:06:15,916 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 18:06:15,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 18:06:15,920 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 18:06:15,922 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 18:06:15,922 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 18:06:15,923 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 18:06:15,924 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 18:06:15,925 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 18:06:15,926 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 18:06:15,927 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 18:06:15,927 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 18:06:15,928 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 18:06:15,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 18:06:15,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 18:06:15,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 18:06:15,930 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 18:06:15,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 18:06:15,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 18:06:15,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 18:06:15,934 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 18:06:15,966 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 18:06:15,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 18:06:15,967 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 18:06:15,968 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 18:06:15,968 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 18:06:15,968 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 18:06:15,969 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 18:06:15,969 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 18:06:15,969 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 18:06:15,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 18:06:15,970 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 18:06:15,971 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 18:06:15,971 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 18:06:15,971 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 18:06:15,971 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 18:06:15,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 18:06:15,971 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 18:06:15,972 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 18:06:15,972 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 18:06:15,972 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 18:06:15,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 18:06:15,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 18:06:15,973 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 18:06:15,973 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 18:06:15,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 18:06:15,973 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 18:06:15,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 18:06:15,974 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 18:06:15,974 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 18:06:15,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 18:06:15,974 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 18:06:15,974 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 18:06:15,975 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 18:06:15,975 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c39b660f273ecbdfa60a013e46dad0637949d26902d1f41ae3834ad8e3310564 [2022-07-19 18:06:16,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 18:06:16,201 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 18:06:16,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 18:06:16,204 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 18:06:16,205 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 18:06:16,206 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-07-19 18:06:16,272 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d531f6cc/f82cd112a8f7437bb480d974d544c900/FLAG31dc5dfbe [2022-07-19 18:06:16,677 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 18:06:16,678 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-07-19 18:06:16,690 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d531f6cc/f82cd112a8f7437bb480d974d544c900/FLAG31dc5dfbe [2022-07-19 18:06:16,702 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d531f6cc/f82cd112a8f7437bb480d974d544c900 [2022-07-19 18:06:16,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 18:06:16,706 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 18:06:16,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 18:06:16,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 18:06:16,711 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 18:06:16,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 06:06:16" (1/1) ... [2022-07-19 18:06:16,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d4a5b7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:06:16, skipping insertion in model container [2022-07-19 18:06:16,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 06:06:16" (1/1) ... [2022-07-19 18:06:16,719 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 18:06:16,756 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 18:06:16,937 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7469,7482] [2022-07-19 18:06:16,968 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 18:06:16,982 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 18:06:17,019 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7469,7482] [2022-07-19 18:06:17,049 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 18:06:17,066 INFO L208 MainTranslator]: Completed translation [2022-07-19 18:06:17,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:06:17 WrapperNode [2022-07-19 18:06:17,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 18:06:17,067 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 18:06:17,068 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 18:06:17,068 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 18:06:17,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:06:17" (1/1) ... [2022-07-19 18:06:17,092 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:06:17" (1/1) ... [2022-07-19 18:06:17,129 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 610 [2022-07-19 18:06:17,129 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 18:06:17,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 18:06:17,130 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 18:06:17,130 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 18:06:17,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:06:17" (1/1) ... [2022-07-19 18:06:17,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:06:17" (1/1) ... [2022-07-19 18:06:17,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:06:17" (1/1) ... [2022-07-19 18:06:17,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:06:17" (1/1) ... [2022-07-19 18:06:17,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:06:17" (1/1) ... [2022-07-19 18:06:17,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:06:17" (1/1) ... [2022-07-19 18:06:17,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:06:17" (1/1) ... [2022-07-19 18:06:17,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 18:06:17,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 18:06:17,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 18:06:17,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 18:06:17,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:06:17" (1/1) ... [2022-07-19 18:06:17,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 18:06:17,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 18:06:17,229 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 18:06:17,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 18:06:17,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 18:06:17,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 18:06:17,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 18:06:17,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 18:06:17,389 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 18:06:17,404 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 18:06:17,909 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 18:06:17,917 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 18:06:17,918 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 18:06:17,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 06:06:17 BoogieIcfgContainer [2022-07-19 18:06:17,922 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 18:06:17,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 18:06:17,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 18:06:17,927 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 18:06:17,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 06:06:16" (1/3) ... [2022-07-19 18:06:17,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e57aa97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 06:06:17, skipping insertion in model container [2022-07-19 18:06:17,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:06:17" (2/3) ... [2022-07-19 18:06:17,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e57aa97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 06:06:17, skipping insertion in model container [2022-07-19 18:06:17,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 06:06:17" (3/3) ... [2022-07-19 18:06:17,930 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-07-19 18:06:17,942 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 18:06:17,943 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 18:06:17,986 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 18:06:17,992 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@42387bf9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4dadea9e [2022-07-19 18:06:17,992 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 18:06:17,996 INFO L276 IsEmpty]: Start isEmpty. Operand has 162 states, 160 states have (on average 1.70625) internal successors, (273), 161 states have internal predecessors, (273), 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) [2022-07-19 18:06:18,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-19 18:06:18,003 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:06:18,003 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] [2022-07-19 18:06:18,004 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:06:18,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:06:18,008 INFO L85 PathProgramCache]: Analyzing trace with hash 985312972, now seen corresponding path program 1 times [2022-07-19 18:06:18,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:06:18,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760671713] [2022-07-19 18:06:18,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:06:18,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:06:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:06:18,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:06:18,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:06:18,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760671713] [2022-07-19 18:06:18,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760671713] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:06:18,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:06:18,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 18:06:18,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958743817] [2022-07-19 18:06:18,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:06:18,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:06:18,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:06:18,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:06:18,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:06:18,326 INFO L87 Difference]: Start difference. First operand has 162 states, 160 states have (on average 1.70625) internal successors, (273), 161 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2022-07-19 18:06:18,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:06:18,595 INFO L93 Difference]: Finished difference Result 517 states and 836 transitions. [2022-07-19 18:06:18,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 18:06:18,599 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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 50 [2022-07-19 18:06:18,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:06:18,619 INFO L225 Difference]: With dead ends: 517 [2022-07-19 18:06:18,622 INFO L226 Difference]: Without dead ends: 438 [2022-07-19 18:06:18,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:06:18,629 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 913 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 18:06:18,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [913 Valid, 1288 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 18:06:18,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-07-19 18:06:18,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 256. [2022-07-19 18:06:18,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 1.4980392156862745) internal successors, (382), 255 states have internal predecessors, (382), 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) [2022-07-19 18:06:18,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 382 transitions. [2022-07-19 18:06:18,711 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 382 transitions. Word has length 50 [2022-07-19 18:06:18,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:06:18,712 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 382 transitions. [2022-07-19 18:06:18,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2022-07-19 18:06:18,712 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 382 transitions. [2022-07-19 18:06:18,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-19 18:06:18,714 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:06:18,714 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] [2022-07-19 18:06:18,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 18:06:18,715 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:06:18,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:06:18,717 INFO L85 PathProgramCache]: Analyzing trace with hash -722006169, now seen corresponding path program 1 times [2022-07-19 18:06:18,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:06:18,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178019925] [2022-07-19 18:06:18,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:06:18,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:06:18,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:06:18,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:06:18,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:06:18,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178019925] [2022-07-19 18:06:18,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178019925] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:06:18,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:06:18,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:06:18,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034803881] [2022-07-19 18:06:18,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:06:18,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:06:18,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:06:18,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:06:18,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:06:18,812 INFO L87 Difference]: Start difference. First operand 256 states and 382 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2022-07-19 18:06:18,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:06:18,888 INFO L93 Difference]: Finished difference Result 628 states and 954 transitions. [2022-07-19 18:06:18,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:06:18,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 53 [2022-07-19 18:06:18,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:06:18,891 INFO L225 Difference]: With dead ends: 628 [2022-07-19 18:06:18,892 INFO L226 Difference]: Without dead ends: 430 [2022-07-19 18:06:18,893 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 [2022-07-19 18:06:18,895 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 158 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:06:18,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 420 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:06:18,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2022-07-19 18:06:18,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 428. [2022-07-19 18:06:18,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 1.484777517564403) internal successors, (634), 427 states have internal predecessors, (634), 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) [2022-07-19 18:06:18,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 634 transitions. [2022-07-19 18:06:18,949 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 634 transitions. Word has length 53 [2022-07-19 18:06:18,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:06:18,950 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 634 transitions. [2022-07-19 18:06:18,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2022-07-19 18:06:18,951 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 634 transitions. [2022-07-19 18:06:18,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-19 18:06:18,953 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:06:18,953 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] [2022-07-19 18:06:18,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 18:06:18,954 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:06:18,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:06:18,956 INFO L85 PathProgramCache]: Analyzing trace with hash -695460410, now seen corresponding path program 1 times [2022-07-19 18:06:18,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:06:18,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628142634] [2022-07-19 18:06:18,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:06:18,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:06:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:06:19,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:06:19,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:06:19,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628142634] [2022-07-19 18:06:19,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628142634] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:06:19,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:06:19,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:06:19,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38857575] [2022-07-19 18:06:19,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:06:19,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:06:19,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:06:19,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:06:19,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:06:19,024 INFO L87 Difference]: Start difference. First operand 428 states and 634 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2022-07-19 18:06:19,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:06:19,103 INFO L93 Difference]: Finished difference Result 1078 states and 1615 transitions. [2022-07-19 18:06:19,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:06:19,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 53 [2022-07-19 18:06:19,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:06:19,107 INFO L225 Difference]: With dead ends: 1078 [2022-07-19 18:06:19,107 INFO L226 Difference]: Without dead ends: 750 [2022-07-19 18:06:19,111 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 [2022-07-19 18:06:19,116 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 157 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:06:19,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 434 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:06:19,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2022-07-19 18:06:19,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 748. [2022-07-19 18:06:19,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 747 states have (on average 1.4725568942436413) internal successors, (1100), 747 states have internal predecessors, (1100), 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) [2022-07-19 18:06:19,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 1100 transitions. [2022-07-19 18:06:19,173 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 1100 transitions. Word has length 53 [2022-07-19 18:06:19,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:06:19,175 INFO L495 AbstractCegarLoop]: Abstraction has 748 states and 1100 transitions. [2022-07-19 18:06:19,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2022-07-19 18:06:19,176 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1100 transitions. [2022-07-19 18:06:19,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-19 18:06:19,180 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:06:19,181 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] [2022-07-19 18:06:19,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 18:06:19,181 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:06:19,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:06:19,182 INFO L85 PathProgramCache]: Analyzing trace with hash -272648633, now seen corresponding path program 1 times [2022-07-19 18:06:19,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:06:19,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295841642] [2022-07-19 18:06:19,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:06:19,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:06:19,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:06:19,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:06:19,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:06:19,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295841642] [2022-07-19 18:06:19,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295841642] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:06:19,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:06:19,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:06:19,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502309269] [2022-07-19 18:06:19,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:06:19,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:06:19,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:06:19,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:06:19,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:06:19,245 INFO L87 Difference]: Start difference. First operand 748 states and 1100 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2022-07-19 18:06:19,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:06:19,336 INFO L93 Difference]: Finished difference Result 1859 states and 2747 transitions. [2022-07-19 18:06:19,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:06:19,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 53 [2022-07-19 18:06:19,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:06:19,343 INFO L225 Difference]: With dead ends: 1859 [2022-07-19 18:06:19,343 INFO L226 Difference]: Without dead ends: 1295 [2022-07-19 18:06:19,345 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 [2022-07-19 18:06:19,353 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 144 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:06:19,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 434 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:06:19,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2022-07-19 18:06:19,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 1293. [2022-07-19 18:06:19,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 1292 states have (on average 1.4504643962848298) internal successors, (1874), 1292 states have internal predecessors, (1874), 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) [2022-07-19 18:06:19,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 1874 transitions. [2022-07-19 18:06:19,462 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 1874 transitions. Word has length 53 [2022-07-19 18:06:19,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:06:19,462 INFO L495 AbstractCegarLoop]: Abstraction has 1293 states and 1874 transitions. [2022-07-19 18:06:19,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2022-07-19 18:06:19,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 1874 transitions. [2022-07-19 18:06:19,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-19 18:06:19,464 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:06:19,465 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] [2022-07-19 18:06:19,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 18:06:19,465 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:06:19,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:06:19,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1724922721, now seen corresponding path program 1 times [2022-07-19 18:06:19,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:06:19,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104870508] [2022-07-19 18:06:19,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:06:19,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:06:19,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:06:19,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:06:19,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:06:19,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104870508] [2022-07-19 18:06:19,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104870508] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:06:19,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:06:19,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 18:06:19,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483762165] [2022-07-19 18:06:19,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:06:19,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:06:19,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:06:19,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:06:19,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:06:19,597 INFO L87 Difference]: Start difference. First operand 1293 states and 1874 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2022-07-19 18:06:19,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:06:19,790 INFO L93 Difference]: Finished difference Result 2516 states and 3713 transitions. [2022-07-19 18:06:19,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 18:06:19,790 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 54 [2022-07-19 18:06:19,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:06:19,802 INFO L225 Difference]: With dead ends: 2516 [2022-07-19 18:06:19,802 INFO L226 Difference]: Without dead ends: 2150 [2022-07-19 18:06:19,803 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 [2022-07-19 18:06:19,804 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 634 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:06:19,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [634 Valid, 1128 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:06:19,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2150 states. [2022-07-19 18:06:19,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2150 to 1745. [2022-07-19 18:06:19,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1745 states, 1744 states have (on average 1.4581422018348624) internal successors, (2543), 1744 states have internal predecessors, (2543), 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) [2022-07-19 18:06:19,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1745 states to 1745 states and 2543 transitions. [2022-07-19 18:06:19,924 INFO L78 Accepts]: Start accepts. Automaton has 1745 states and 2543 transitions. Word has length 54 [2022-07-19 18:06:19,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:06:19,925 INFO L495 AbstractCegarLoop]: Abstraction has 1745 states and 2543 transitions. [2022-07-19 18:06:19,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2022-07-19 18:06:19,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1745 states and 2543 transitions. [2022-07-19 18:06:19,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-19 18:06:19,930 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:06:19,930 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] [2022-07-19 18:06:19,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 18:06:19,931 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:06:19,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:06:19,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1943574737, now seen corresponding path program 1 times [2022-07-19 18:06:19,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:06:19,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921841161] [2022-07-19 18:06:19,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:06:19,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:06:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:06:20,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:06:20,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:06:20,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921841161] [2022-07-19 18:06:20,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921841161] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:06:20,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:06:20,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 18:06:20,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130212415] [2022-07-19 18:06:20,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:06:20,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:06:20,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:06:20,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:06:20,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:06:20,006 INFO L87 Difference]: Start difference. First operand 1745 states and 2543 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2022-07-19 18:06:20,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:06:20,231 INFO L93 Difference]: Finished difference Result 2968 states and 4382 transitions. [2022-07-19 18:06:20,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 18:06:20,232 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 54 [2022-07-19 18:06:20,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:06:20,243 INFO L225 Difference]: With dead ends: 2968 [2022-07-19 18:06:20,243 INFO L226 Difference]: Without dead ends: 2602 [2022-07-19 18:06:20,244 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 [2022-07-19 18:06:20,246 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 624 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:06:20,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 1029 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:06:20,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2602 states. [2022-07-19 18:06:20,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2602 to 2091. [2022-07-19 18:06:20,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2091 states, 2090 states have (on average 1.4631578947368422) internal successors, (3058), 2090 states have internal predecessors, (3058), 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) [2022-07-19 18:06:20,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2091 states to 2091 states and 3058 transitions. [2022-07-19 18:06:20,392 INFO L78 Accepts]: Start accepts. Automaton has 2091 states and 3058 transitions. Word has length 54 [2022-07-19 18:06:20,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:06:20,393 INFO L495 AbstractCegarLoop]: Abstraction has 2091 states and 3058 transitions. [2022-07-19 18:06:20,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2022-07-19 18:06:20,394 INFO L276 IsEmpty]: Start isEmpty. Operand 2091 states and 3058 transitions. [2022-07-19 18:06:20,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-19 18:06:20,395 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:06:20,395 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] [2022-07-19 18:06:20,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 18:06:20,395 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:06:20,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:06:20,396 INFO L85 PathProgramCache]: Analyzing trace with hash -867408349, now seen corresponding path program 1 times [2022-07-19 18:06:20,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:06:20,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116234881] [2022-07-19 18:06:20,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:06:20,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:06:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:06:20,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:06:20,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:06:20,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116234881] [2022-07-19 18:06:20,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116234881] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:06:20,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:06:20,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 18:06:20,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268248471] [2022-07-19 18:06:20,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:06:20,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:06:20,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:06:20,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:06:20,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:06:20,483 INFO L87 Difference]: Start difference. First operand 2091 states and 3058 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2022-07-19 18:06:20,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:06:20,746 INFO L93 Difference]: Finished difference Result 3367 states and 4972 transitions. [2022-07-19 18:06:20,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 18:06:20,746 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 54 [2022-07-19 18:06:20,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:06:20,757 INFO L225 Difference]: With dead ends: 3367 [2022-07-19 18:06:20,758 INFO L226 Difference]: Without dead ends: 3001 [2022-07-19 18:06:20,760 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 [2022-07-19 18:06:20,761 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 628 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:06:20,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [628 Valid, 1128 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:06:20,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3001 states. [2022-07-19 18:06:20,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3001 to 2382. [2022-07-19 18:06:20,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2382 states, 2381 states have (on average 1.4666106677866442) internal successors, (3492), 2381 states have internal predecessors, (3492), 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) [2022-07-19 18:06:20,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 3492 transitions. [2022-07-19 18:06:20,929 INFO L78 Accepts]: Start accepts. Automaton has 2382 states and 3492 transitions. Word has length 54 [2022-07-19 18:06:20,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:06:20,929 INFO L495 AbstractCegarLoop]: Abstraction has 2382 states and 3492 transitions. [2022-07-19 18:06:20,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2022-07-19 18:06:20,930 INFO L276 IsEmpty]: Start isEmpty. Operand 2382 states and 3492 transitions. [2022-07-19 18:06:20,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-19 18:06:20,931 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:06:20,931 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] [2022-07-19 18:06:20,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 18:06:20,932 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:06:20,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:06:20,932 INFO L85 PathProgramCache]: Analyzing trace with hash -554993830, now seen corresponding path program 1 times [2022-07-19 18:06:20,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:06:20,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296531944] [2022-07-19 18:06:20,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:06:20,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:06:20,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:06:20,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:06:20,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:06:20,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296531944] [2022-07-19 18:06:20,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296531944] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:06:20,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:06:20,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:06:20,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949811349] [2022-07-19 18:06:20,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:06:20,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:06:20,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:06:20,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:06:20,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:06:20,979 INFO L87 Difference]: Start difference. First operand 2382 states and 3492 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 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) [2022-07-19 18:06:21,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:06:21,371 INFO L93 Difference]: Finished difference Result 5669 states and 8297 transitions. [2022-07-19 18:06:21,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 18:06:21,372 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 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 58 [2022-07-19 18:06:21,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:06:21,384 INFO L225 Difference]: With dead ends: 5669 [2022-07-19 18:06:21,384 INFO L226 Difference]: Without dead ends: 3315 [2022-07-19 18:06:21,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:06:21,388 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 888 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 18:06:21,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 208 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 18:06:21,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3315 states. [2022-07-19 18:06:21,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3315 to 3288. [2022-07-19 18:06:21,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3288 states, 3287 states have (on average 1.4432613325220567) internal successors, (4744), 3287 states have internal predecessors, (4744), 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) [2022-07-19 18:06:21,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3288 states to 3288 states and 4744 transitions. [2022-07-19 18:06:21,645 INFO L78 Accepts]: Start accepts. Automaton has 3288 states and 4744 transitions. Word has length 58 [2022-07-19 18:06:21,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:06:21,645 INFO L495 AbstractCegarLoop]: Abstraction has 3288 states and 4744 transitions. [2022-07-19 18:06:21,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 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) [2022-07-19 18:06:21,646 INFO L276 IsEmpty]: Start isEmpty. Operand 3288 states and 4744 transitions. [2022-07-19 18:06:21,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-19 18:06:21,647 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:06:21,648 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] [2022-07-19 18:06:21,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 18:06:21,648 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:06:21,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:06:21,649 INFO L85 PathProgramCache]: Analyzing trace with hash 500702524, now seen corresponding path program 1 times [2022-07-19 18:06:21,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:06:21,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130237551] [2022-07-19 18:06:21,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:06:21,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:06:21,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:06:21,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:06:21,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:06:21,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130237551] [2022-07-19 18:06:21,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130237551] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:06:21,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:06:21,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:06:21,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135848554] [2022-07-19 18:06:21,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:06:21,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:06:21,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:06:21,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:06:21,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:06:21,711 INFO L87 Difference]: Start difference. First operand 3288 states and 4744 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 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) [2022-07-19 18:06:22,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:06:22,189 INFO L93 Difference]: Finished difference Result 7833 states and 11294 transitions. [2022-07-19 18:06:22,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 18:06:22,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 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 58 [2022-07-19 18:06:22,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:06:22,207 INFO L225 Difference]: With dead ends: 7833 [2022-07-19 18:06:22,208 INFO L226 Difference]: Without dead ends: 4591 [2022-07-19 18:06:22,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:06:22,215 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 876 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:06:22,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 226 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:06:22,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4591 states. [2022-07-19 18:06:22,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4591 to 4566. [2022-07-19 18:06:22,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4566 states, 4565 states have (on average 1.4297918948521358) internal successors, (6527), 4565 states have internal predecessors, (6527), 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) [2022-07-19 18:06:22,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4566 states to 4566 states and 6527 transitions. [2022-07-19 18:06:22,596 INFO L78 Accepts]: Start accepts. Automaton has 4566 states and 6527 transitions. Word has length 58 [2022-07-19 18:06:22,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:06:22,596 INFO L495 AbstractCegarLoop]: Abstraction has 4566 states and 6527 transitions. [2022-07-19 18:06:22,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 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) [2022-07-19 18:06:22,597 INFO L276 IsEmpty]: Start isEmpty. Operand 4566 states and 6527 transitions. [2022-07-19 18:06:22,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-19 18:06:22,599 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:06:22,599 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] [2022-07-19 18:06:22,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 18:06:22,600 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:06:22,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:06:22,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1531409244, now seen corresponding path program 1 times [2022-07-19 18:06:22,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:06:22,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756696820] [2022-07-19 18:06:22,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:06:22,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:06:22,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:06:22,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:06:22,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:06:22,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756696820] [2022-07-19 18:06:22,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756696820] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:06:22,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:06:22,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:06:22,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629538531] [2022-07-19 18:06:22,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:06:22,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:06:22,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:06:22,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:06:22,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:06:22,657 INFO L87 Difference]: Start difference. First operand 4566 states and 6527 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 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) [2022-07-19 18:06:23,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:06:23,361 INFO L93 Difference]: Finished difference Result 10822 states and 15448 transitions. [2022-07-19 18:06:23,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 18:06:23,362 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 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 59 [2022-07-19 18:06:23,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:06:23,384 INFO L225 Difference]: With dead ends: 10822 [2022-07-19 18:06:23,385 INFO L226 Difference]: Without dead ends: 6338 [2022-07-19 18:06:23,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:06:23,392 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 831 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 18:06:23,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 228 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 18:06:23,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6338 states. [2022-07-19 18:06:23,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6338 to 6303. [2022-07-19 18:06:23,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6303 states, 6302 states have (on average 1.4136781973976515) internal successors, (8909), 6302 states have internal predecessors, (8909), 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) [2022-07-19 18:06:23,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6303 states to 6303 states and 8909 transitions. [2022-07-19 18:06:23,937 INFO L78 Accepts]: Start accepts. Automaton has 6303 states and 8909 transitions. Word has length 59 [2022-07-19 18:06:23,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:06:23,937 INFO L495 AbstractCegarLoop]: Abstraction has 6303 states and 8909 transitions. [2022-07-19 18:06:23,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 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) [2022-07-19 18:06:23,938 INFO L276 IsEmpty]: Start isEmpty. Operand 6303 states and 8909 transitions. [2022-07-19 18:06:23,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-19 18:06:23,940 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:06:23,941 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] [2022-07-19 18:06:23,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 18:06:23,941 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:06:23,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:06:23,942 INFO L85 PathProgramCache]: Analyzing trace with hash -97252013, now seen corresponding path program 1 times [2022-07-19 18:06:23,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:06:23,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147267432] [2022-07-19 18:06:23,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:06:23,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:06:23,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:06:24,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:06:24,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:06:24,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147267432] [2022-07-19 18:06:24,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147267432] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:06:24,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:06:24,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 18:06:24,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875615452] [2022-07-19 18:06:24,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:06:24,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 18:06:24,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:06:24,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 18:06:24,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:06:24,037 INFO L87 Difference]: Start difference. First operand 6303 states and 8909 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 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) [2022-07-19 18:06:26,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:06:26,035 INFO L93 Difference]: Finished difference Result 24311 states and 34246 transitions. [2022-07-19 18:06:26,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 18:06:26,036 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 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 60 [2022-07-19 18:06:26,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:06:26,087 INFO L225 Difference]: With dead ends: 24311 [2022-07-19 18:06:26,088 INFO L226 Difference]: Without dead ends: 21033 [2022-07-19 18:06:26,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-19 18:06:26,103 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 2032 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2032 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 18:06:26,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2032 Valid, 343 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 18:06:26,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21033 states. [2022-07-19 18:06:26,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21033 to 6323. [2022-07-19 18:06:26,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6323 states, 6322 states have (on average 1.4130022144890857) internal successors, (8933), 6322 states have internal predecessors, (8933), 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) [2022-07-19 18:06:26,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6323 states to 6323 states and 8933 transitions. [2022-07-19 18:06:26,894 INFO L78 Accepts]: Start accepts. Automaton has 6323 states and 8933 transitions. Word has length 60 [2022-07-19 18:06:26,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:06:26,894 INFO L495 AbstractCegarLoop]: Abstraction has 6323 states and 8933 transitions. [2022-07-19 18:06:26,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 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) [2022-07-19 18:06:26,895 INFO L276 IsEmpty]: Start isEmpty. Operand 6323 states and 8933 transitions. [2022-07-19 18:06:26,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-19 18:06:26,898 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:06:26,898 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] [2022-07-19 18:06:26,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 18:06:26,898 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:06:26,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:06:26,899 INFO L85 PathProgramCache]: Analyzing trace with hash -172891724, now seen corresponding path program 1 times [2022-07-19 18:06:26,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:06:26,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167949097] [2022-07-19 18:06:26,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:06:26,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:06:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:06:26,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:06:26,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:06:26,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167949097] [2022-07-19 18:06:26,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167949097] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:06:26,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:06:26,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 18:06:26,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287639907] [2022-07-19 18:06:26,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:06:26,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 18:06:26,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:06:26,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 18:06:26,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:06:26,961 INFO L87 Difference]: Start difference. First operand 6323 states and 8933 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 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) [2022-07-19 18:06:29,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:06:29,742 INFO L93 Difference]: Finished difference Result 28525 states and 40259 transitions. [2022-07-19 18:06:29,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 18:06:29,743 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 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 60 [2022-07-19 18:06:29,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:06:29,803 INFO L225 Difference]: With dead ends: 28525 [2022-07-19 18:06:29,803 INFO L226 Difference]: Without dead ends: 25419 [2022-07-19 18:06:29,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-19 18:06:29,817 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 2323 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2323 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 18:06:29,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2323 Valid, 388 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 18:06:29,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25419 states. [2022-07-19 18:06:30,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25419 to 6417. [2022-07-19 18:06:30,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6417 states, 6416 states have (on average 1.4111596009975063) internal successors, (9054), 6416 states have internal predecessors, (9054), 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) [2022-07-19 18:06:30,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6417 states to 6417 states and 9054 transitions. [2022-07-19 18:06:30,743 INFO L78 Accepts]: Start accepts. Automaton has 6417 states and 9054 transitions. Word has length 60 [2022-07-19 18:06:30,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:06:30,743 INFO L495 AbstractCegarLoop]: Abstraction has 6417 states and 9054 transitions. [2022-07-19 18:06:30,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 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) [2022-07-19 18:06:30,744 INFO L276 IsEmpty]: Start isEmpty. Operand 6417 states and 9054 transitions. [2022-07-19 18:06:30,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-19 18:06:30,747 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:06:30,747 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] [2022-07-19 18:06:30,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 18:06:30,748 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:06:30,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:06:30,748 INFO L85 PathProgramCache]: Analyzing trace with hash -2054897963, now seen corresponding path program 1 times [2022-07-19 18:06:30,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:06:30,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286101164] [2022-07-19 18:06:30,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:06:30,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:06:30,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:06:30,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:06:30,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:06:30,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286101164] [2022-07-19 18:06:30,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286101164] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:06:30,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:06:30,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 18:06:30,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544322604] [2022-07-19 18:06:30,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:06:30,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 18:06:30,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:06:30,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 18:06:30,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:06:30,816 INFO L87 Difference]: Start difference. First operand 6417 states and 9054 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 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) [2022-07-19 18:06:34,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:06:34,727 INFO L93 Difference]: Finished difference Result 34344 states and 48423 transitions. [2022-07-19 18:06:34,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 18:06:34,731 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 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 60 [2022-07-19 18:06:34,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:06:34,793 INFO L225 Difference]: With dead ends: 34344 [2022-07-19 18:06:34,793 INFO L226 Difference]: Without dead ends: 31246 [2022-07-19 18:06:34,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-19 18:06:34,808 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 2695 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2695 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 18:06:34,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2695 Valid, 410 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 18:06:34,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31246 states. [2022-07-19 18:06:35,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31246 to 6473. [2022-07-19 18:06:35,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6473 states, 6472 states have (on average 1.409610630407911) internal successors, (9123), 6472 states have internal predecessors, (9123), 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) [2022-07-19 18:06:35,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6473 states to 6473 states and 9123 transitions. [2022-07-19 18:06:35,785 INFO L78 Accepts]: Start accepts. Automaton has 6473 states and 9123 transitions. Word has length 60 [2022-07-19 18:06:35,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:06:35,785 INFO L495 AbstractCegarLoop]: Abstraction has 6473 states and 9123 transitions. [2022-07-19 18:06:35,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 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) [2022-07-19 18:06:35,786 INFO L276 IsEmpty]: Start isEmpty. Operand 6473 states and 9123 transitions. [2022-07-19 18:06:35,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-19 18:06:35,790 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:06:35,790 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] [2022-07-19 18:06:35,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 18:06:35,790 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:06:35,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:06:35,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1036507303, now seen corresponding path program 1 times [2022-07-19 18:06:35,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:06:35,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367275629] [2022-07-19 18:06:35,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:06:35,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:06:35,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:06:35,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:06:35,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:06:35,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367275629] [2022-07-19 18:06:35,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367275629] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:06:35,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:06:35,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 18:06:35,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965350488] [2022-07-19 18:06:35,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:06:35,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 18:06:35,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:06:35,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 18:06:35,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-19 18:06:35,978 INFO L87 Difference]: Start difference. First operand 6473 states and 9123 transitions. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:06:39,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:06:39,918 INFO L93 Difference]: Finished difference Result 24418 states and 34421 transitions. [2022-07-19 18:06:39,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-19 18:06:39,919 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-07-19 18:06:39,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:06:39,949 INFO L225 Difference]: With dead ends: 24418 [2022-07-19 18:06:39,950 INFO L226 Difference]: Without dead ends: 19216 [2022-07-19 18:06:39,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2022-07-19 18:06:39,966 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 2010 mSDsluCounter, 1302 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2010 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 18:06:39,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2010 Valid, 1549 Invalid, 1226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 18:06:39,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19216 states. [2022-07-19 18:06:40,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19216 to 6341. [2022-07-19 18:06:40,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6341 states, 6340 states have (on average 1.407570977917981) internal successors, (8924), 6340 states have internal predecessors, (8924), 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) [2022-07-19 18:06:40,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6341 states to 6341 states and 8924 transitions. [2022-07-19 18:06:40,982 INFO L78 Accepts]: Start accepts. Automaton has 6341 states and 8924 transitions. Word has length 62 [2022-07-19 18:06:40,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:06:40,982 INFO L495 AbstractCegarLoop]: Abstraction has 6341 states and 8924 transitions. [2022-07-19 18:06:40,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:06:40,982 INFO L276 IsEmpty]: Start isEmpty. Operand 6341 states and 8924 transitions. [2022-07-19 18:06:40,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-19 18:06:40,985 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:06:40,986 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] [2022-07-19 18:06:40,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 18:06:40,986 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:06:40,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:06:40,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1459319080, now seen corresponding path program 1 times [2022-07-19 18:06:40,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:06:40,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244984666] [2022-07-19 18:06:40,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:06:40,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:06:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:06:41,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:06:41,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:06:41,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244984666] [2022-07-19 18:06:41,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244984666] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:06:41,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:06:41,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 18:06:41,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181917981] [2022-07-19 18:06:41,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:06:41,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 18:06:41,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:06:41,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 18:06:41,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-19 18:06:41,163 INFO L87 Difference]: Start difference. First operand 6341 states and 8924 transitions. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:06:45,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:06:45,152 INFO L93 Difference]: Finished difference Result 24550 states and 34500 transitions. [2022-07-19 18:06:45,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-19 18:06:45,153 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-07-19 18:06:45,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:06:45,180 INFO L225 Difference]: With dead ends: 24550 [2022-07-19 18:06:45,181 INFO L226 Difference]: Without dead ends: 19255 [2022-07-19 18:06:45,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2022-07-19 18:06:45,194 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 1926 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 1312 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1926 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 18:06:45,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1926 Valid, 1584 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1312 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 18:06:45,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19255 states. [2022-07-19 18:06:46,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19255 to 6144. [2022-07-19 18:06:46,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6144 states, 6143 states have (on average 1.4061533452710402) internal successors, (8638), 6143 states have internal predecessors, (8638), 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) [2022-07-19 18:06:46,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6144 states to 6144 states and 8638 transitions. [2022-07-19 18:06:46,275 INFO L78 Accepts]: Start accepts. Automaton has 6144 states and 8638 transitions. Word has length 62 [2022-07-19 18:06:46,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:06:46,276 INFO L495 AbstractCegarLoop]: Abstraction has 6144 states and 8638 transitions. [2022-07-19 18:06:46,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:06:46,276 INFO L276 IsEmpty]: Start isEmpty. Operand 6144 states and 8638 transitions. [2022-07-19 18:06:46,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-19 18:06:46,279 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:06:46,280 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] [2022-07-19 18:06:46,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 18:06:46,280 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:06:46,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:06:46,281 INFO L85 PathProgramCache]: Analyzing trace with hash 2010042985, now seen corresponding path program 1 times [2022-07-19 18:06:46,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:06:46,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80046315] [2022-07-19 18:06:46,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:06:46,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:06:46,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:06:46,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:06:46,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:06:46,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80046315] [2022-07-19 18:06:46,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80046315] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:06:46,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:06:46,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 18:06:46,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923069273] [2022-07-19 18:06:46,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:06:46,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 18:06:46,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:06:46,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 18:06:46,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-19 18:06:46,436 INFO L87 Difference]: Start difference. First operand 6144 states and 8638 transitions. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:06:50,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:06:50,119 INFO L93 Difference]: Finished difference Result 21217 states and 29874 transitions. [2022-07-19 18:06:50,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 18:06:50,119 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-07-19 18:06:50,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:06:50,139 INFO L225 Difference]: With dead ends: 21217 [2022-07-19 18:06:50,140 INFO L226 Difference]: Without dead ends: 15981 [2022-07-19 18:06:50,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2022-07-19 18:06:50,146 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 2094 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2094 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 18:06:50,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2094 Valid, 1309 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 958 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 18:06:50,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15981 states. [2022-07-19 18:06:51,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15981 to 6003. [2022-07-19 18:06:51,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6003 states, 6002 states have (on average 1.406697767410863) internal successors, (8443), 6002 states have internal predecessors, (8443), 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) [2022-07-19 18:06:51,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6003 states to 6003 states and 8443 transitions. [2022-07-19 18:06:51,298 INFO L78 Accepts]: Start accepts. Automaton has 6003 states and 8443 transitions. Word has length 62 [2022-07-19 18:06:51,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:06:51,298 INFO L495 AbstractCegarLoop]: Abstraction has 6003 states and 8443 transitions. [2022-07-19 18:06:51,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:06:51,299 INFO L276 IsEmpty]: Start isEmpty. Operand 6003 states and 8443 transitions. [2022-07-19 18:06:51,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-19 18:06:51,302 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:06:51,302 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] [2022-07-19 18:06:51,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 18:06:51,302 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:06:51,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:06:51,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1983119998, now seen corresponding path program 1 times [2022-07-19 18:06:51,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:06:51,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428011813] [2022-07-19 18:06:51,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:06:51,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:06:51,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:06:51,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:06:51,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:06:51,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428011813] [2022-07-19 18:06:51,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428011813] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:06:51,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:06:51,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:06:51,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894762567] [2022-07-19 18:06:51,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:06:51,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:06:51,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:06:51,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:06:51,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:06:51,339 INFO L87 Difference]: Start difference. First operand 6003 states and 8443 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2022-07-19 18:06:52,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:06:52,447 INFO L93 Difference]: Finished difference Result 9060 states and 12752 transitions. [2022-07-19 18:06:52,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:06:52,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2022-07-19 18:06:52,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:06:52,456 INFO L225 Difference]: With dead ends: 9060 [2022-07-19 18:06:52,456 INFO L226 Difference]: Without dead ends: 5806 [2022-07-19 18:06:52,460 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 [2022-07-19 18:06:52,460 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 148 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:06:52,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 521 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:06:52,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5806 states. [2022-07-19 18:06:53,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5806 to 5804. [2022-07-19 18:06:53,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5804 states, 5803 states have (on average 1.387558159572635) internal successors, (8052), 5803 states have internal predecessors, (8052), 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) [2022-07-19 18:06:53,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5804 states to 5804 states and 8052 transitions. [2022-07-19 18:06:53,459 INFO L78 Accepts]: Start accepts. Automaton has 5804 states and 8052 transitions. Word has length 63 [2022-07-19 18:06:53,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:06:53,459 INFO L495 AbstractCegarLoop]: Abstraction has 5804 states and 8052 transitions. [2022-07-19 18:06:53,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2022-07-19 18:06:53,460 INFO L276 IsEmpty]: Start isEmpty. Operand 5804 states and 8052 transitions. [2022-07-19 18:06:53,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-19 18:06:53,462 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:06:53,462 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] [2022-07-19 18:06:53,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 18:06:53,463 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:06:53,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:06:53,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1051173576, now seen corresponding path program 1 times [2022-07-19 18:06:53,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:06:53,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293176341] [2022-07-19 18:06:53,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:06:53,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:06:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:06:53,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:06:53,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:06:53,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293176341] [2022-07-19 18:06:53,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293176341] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:06:53,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:06:53,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:06:53,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771109509] [2022-07-19 18:06:53,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:06:53,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:06:53,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:06:53,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:06:53,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:06:53,494 INFO L87 Difference]: Start difference. First operand 5804 states and 8052 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2022-07-19 18:06:54,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:06:54,445 INFO L93 Difference]: Finished difference Result 8092 states and 11221 transitions. [2022-07-19 18:06:54,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:06:54,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2022-07-19 18:06:54,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:06:54,451 INFO L225 Difference]: With dead ends: 8092 [2022-07-19 18:06:54,451 INFO L226 Difference]: Without dead ends: 5023 [2022-07-19 18:06:54,453 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 [2022-07-19 18:06:54,454 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 134 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:06:54,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 513 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:06:54,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5023 states. [2022-07-19 18:06:55,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5023 to 5021. [2022-07-19 18:06:55,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5021 states, 5020 states have (on average 1.3629482071713148) internal successors, (6842), 5020 states have internal predecessors, (6842), 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) [2022-07-19 18:06:55,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5021 states to 5021 states and 6842 transitions. [2022-07-19 18:06:55,317 INFO L78 Accepts]: Start accepts. Automaton has 5021 states and 6842 transitions. Word has length 63 [2022-07-19 18:06:55,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:06:55,318 INFO L495 AbstractCegarLoop]: Abstraction has 5021 states and 6842 transitions. [2022-07-19 18:06:55,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2022-07-19 18:06:55,318 INFO L276 IsEmpty]: Start isEmpty. Operand 5021 states and 6842 transitions. [2022-07-19 18:06:55,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-19 18:06:55,320 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:06:55,321 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] [2022-07-19 18:06:55,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 18:06:55,321 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:06:55,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:06:55,322 INFO L85 PathProgramCache]: Analyzing trace with hash -125701859, now seen corresponding path program 1 times [2022-07-19 18:06:55,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:06:55,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435008851] [2022-07-19 18:06:55,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:06:55,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:06:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:06:55,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:06:55,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:06:55,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435008851] [2022-07-19 18:06:55,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435008851] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:06:55,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:06:55,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:06:55,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490274764] [2022-07-19 18:06:55,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:06:55,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:06:55,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:06:55,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:06:55,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:06:55,351 INFO L87 Difference]: Start difference. First operand 5021 states and 6842 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2022-07-19 18:06:56,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:06:56,275 INFO L93 Difference]: Finished difference Result 6625 states and 9028 transitions. [2022-07-19 18:06:56,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:06:56,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2022-07-19 18:06:56,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:06:56,282 INFO L225 Difference]: With dead ends: 6625 [2022-07-19 18:06:56,283 INFO L226 Difference]: Without dead ends: 3867 [2022-07-19 18:06:56,286 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 [2022-07-19 18:06:56,287 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 146 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:06:56,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 524 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:06:56,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3867 states. [2022-07-19 18:06:56,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3867 to 3865. [2022-07-19 18:06:56,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3865 states, 3864 states have (on average 1.3382505175983437) internal successors, (5171), 3864 states have internal predecessors, (5171), 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) [2022-07-19 18:06:56,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3865 states to 3865 states and 5171 transitions. [2022-07-19 18:06:56,961 INFO L78 Accepts]: Start accepts. Automaton has 3865 states and 5171 transitions. Word has length 63 [2022-07-19 18:06:56,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:06:56,961 INFO L495 AbstractCegarLoop]: Abstraction has 3865 states and 5171 transitions. [2022-07-19 18:06:56,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2022-07-19 18:06:56,961 INFO L276 IsEmpty]: Start isEmpty. Operand 3865 states and 5171 transitions. [2022-07-19 18:06:56,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-19 18:06:56,963 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:06:56,963 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] [2022-07-19 18:06:56,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 18:06:56,963 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:06:56,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:06:56,964 INFO L85 PathProgramCache]: Analyzing trace with hash 666404545, now seen corresponding path program 1 times [2022-07-19 18:06:56,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:06:56,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418473080] [2022-07-19 18:06:56,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:06:56,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:06:56,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:06:56,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:06:56,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:06:56,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418473080] [2022-07-19 18:06:56,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418473080] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:06:56,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:06:56,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:06:56,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688668946] [2022-07-19 18:06:56,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:06:56,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:06:56,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:06:56,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:06:56,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:06:56,990 INFO L87 Difference]: Start difference. First operand 3865 states and 5171 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2022-07-19 18:06:58,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:06:58,006 INFO L93 Difference]: Finished difference Result 7116 states and 9579 transitions. [2022-07-19 18:06:58,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:06:58,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2022-07-19 18:06:58,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:06:58,015 INFO L225 Difference]: With dead ends: 7116 [2022-07-19 18:06:58,015 INFO L226 Difference]: Without dead ends: 5197 [2022-07-19 18:06:58,019 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 [2022-07-19 18:06:58,020 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 171 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:06:58,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 343 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:06:58,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5197 states. [2022-07-19 18:06:58,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5197 to 3680. [2022-07-19 18:06:58,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3680 states, 3679 states have (on average 1.337048110899701) internal successors, (4919), 3679 states have internal predecessors, (4919), 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) [2022-07-19 18:06:58,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3680 states to 3680 states and 4919 transitions. [2022-07-19 18:06:58,728 INFO L78 Accepts]: Start accepts. Automaton has 3680 states and 4919 transitions. Word has length 64 [2022-07-19 18:06:58,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:06:58,728 INFO L495 AbstractCegarLoop]: Abstraction has 3680 states and 4919 transitions. [2022-07-19 18:06:58,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2022-07-19 18:06:58,729 INFO L276 IsEmpty]: Start isEmpty. Operand 3680 states and 4919 transitions. [2022-07-19 18:06:58,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-19 18:06:58,731 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:06:58,731 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] [2022-07-19 18:06:58,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 18:06:58,731 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:06:58,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:06:58,732 INFO L85 PathProgramCache]: Analyzing trace with hash 859970200, now seen corresponding path program 1 times [2022-07-19 18:06:58,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:06:58,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819491460] [2022-07-19 18:06:58,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:06:58,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:06:58,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:06:59,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:06:59,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:06:59,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819491460] [2022-07-19 18:06:59,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819491460] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:06:59,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:06:59,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-07-19 18:06:59,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581276369] [2022-07-19 18:06:59,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:06:59,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-19 18:06:59,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:06:59,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-19 18:06:59,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-07-19 18:06:59,283 INFO L87 Difference]: Start difference. First operand 3680 states and 4919 transitions. Second operand has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 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) [2022-07-19 18:07:04,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:07:04,230 INFO L93 Difference]: Finished difference Result 7604 states and 10239 transitions. [2022-07-19 18:07:04,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-19 18:07:04,231 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 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 64 [2022-07-19 18:07:04,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:07:04,238 INFO L225 Difference]: With dead ends: 7604 [2022-07-19 18:07:04,238 INFO L226 Difference]: Without dead ends: 7537 [2022-07-19 18:07:04,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=382, Invalid=1780, Unknown=0, NotChecked=0, Total=2162 [2022-07-19 18:07:04,240 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 2436 mSDsluCounter, 6151 mSDsCounter, 0 mSdLazyCounter, 3620 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2436 SdHoareTripleChecker+Valid, 6590 SdHoareTripleChecker+Invalid, 3657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 3620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-19 18:07:04,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2436 Valid, 6590 Invalid, 3657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 3620 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-19 18:07:04,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7537 states. [2022-07-19 18:07:04,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7537 to 3692. [2022-07-19 18:07:04,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3692 states, 3691 states have (on average 1.3367651043077757) internal successors, (4934), 3691 states have internal predecessors, (4934), 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) [2022-07-19 18:07:04,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3692 states to 3692 states and 4934 transitions. [2022-07-19 18:07:04,944 INFO L78 Accepts]: Start accepts. Automaton has 3692 states and 4934 transitions. Word has length 64 [2022-07-19 18:07:04,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:07:04,944 INFO L495 AbstractCegarLoop]: Abstraction has 3692 states and 4934 transitions. [2022-07-19 18:07:04,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 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) [2022-07-19 18:07:04,944 INFO L276 IsEmpty]: Start isEmpty. Operand 3692 states and 4934 transitions. [2022-07-19 18:07:04,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-19 18:07:04,946 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:07:04,947 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] [2022-07-19 18:07:04,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 18:07:04,947 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:07:04,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:07:04,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1948770272, now seen corresponding path program 1 times [2022-07-19 18:07:04,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:07:04,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984148912] [2022-07-19 18:07:04,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:07:04,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:07:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:07:05,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:07:05,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:07:05,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984148912] [2022-07-19 18:07:05,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984148912] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:07:05,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:07:05,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-07-19 18:07:05,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063281647] [2022-07-19 18:07:05,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:07:05,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-19 18:07:05,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:07:05,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-19 18:07:05,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=458, Unknown=0, NotChecked=0, Total=506 [2022-07-19 18:07:05,517 INFO L87 Difference]: Start difference. First operand 3692 states and 4934 transitions. Second operand has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 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) [2022-07-19 18:07:10,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:07:10,502 INFO L93 Difference]: Finished difference Result 7070 states and 9522 transitions. [2022-07-19 18:07:10,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-19 18:07:10,503 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 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 64 [2022-07-19 18:07:10,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:07:10,511 INFO L225 Difference]: With dead ends: 7070 [2022-07-19 18:07:10,511 INFO L226 Difference]: Without dead ends: 7003 [2022-07-19 18:07:10,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=432, Invalid=1730, Unknown=0, NotChecked=0, Total=2162 [2022-07-19 18:07:10,513 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 1703 mSDsluCounter, 5620 mSDsCounter, 0 mSdLazyCounter, 3432 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1703 SdHoareTripleChecker+Valid, 6053 SdHoareTripleChecker+Invalid, 3454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 18:07:10,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1703 Valid, 6053 Invalid, 3454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 3432 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-19 18:07:10,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7003 states. [2022-07-19 18:07:11,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7003 to 3692. [2022-07-19 18:07:11,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3692 states, 3691 states have (on average 1.3364941750203196) internal successors, (4933), 3691 states have internal predecessors, (4933), 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) [2022-07-19 18:07:11,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3692 states to 3692 states and 4933 transitions. [2022-07-19 18:07:11,229 INFO L78 Accepts]: Start accepts. Automaton has 3692 states and 4933 transitions. Word has length 64 [2022-07-19 18:07:11,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:07:11,229 INFO L495 AbstractCegarLoop]: Abstraction has 3692 states and 4933 transitions. [2022-07-19 18:07:11,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 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) [2022-07-19 18:07:11,229 INFO L276 IsEmpty]: Start isEmpty. Operand 3692 states and 4933 transitions. [2022-07-19 18:07:11,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-19 18:07:11,230 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:07:11,231 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] [2022-07-19 18:07:11,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 18:07:11,231 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:07:11,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:07:11,231 INFO L85 PathProgramCache]: Analyzing trace with hash 682523932, now seen corresponding path program 1 times [2022-07-19 18:07:11,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:07:11,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717855913] [2022-07-19 18:07:11,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:07:11,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:07:11,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:07:11,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:07:11,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:07:11,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717855913] [2022-07-19 18:07:11,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717855913] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:07:11,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:07:11,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-07-19 18:07:11,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070607288] [2022-07-19 18:07:11,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:07:11,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-19 18:07:11,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:07:11,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-19 18:07:11,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-07-19 18:07:11,844 INFO L87 Difference]: Start difference. First operand 3692 states and 4933 transitions. Second operand has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 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) [2022-07-19 18:07:16,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:07:16,626 INFO L93 Difference]: Finished difference Result 7502 states and 10092 transitions. [2022-07-19 18:07:16,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-19 18:07:16,627 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 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 64 [2022-07-19 18:07:16,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:07:16,635 INFO L225 Difference]: With dead ends: 7502 [2022-07-19 18:07:16,635 INFO L226 Difference]: Without dead ends: 7435 [2022-07-19 18:07:16,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=345, Invalid=1461, Unknown=0, NotChecked=0, Total=1806 [2022-07-19 18:07:16,638 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 2500 mSDsluCounter, 6815 mSDsCounter, 0 mSdLazyCounter, 4197 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2500 SdHoareTripleChecker+Valid, 7311 SdHoareTripleChecker+Invalid, 4237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 4197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-19 18:07:16,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2500 Valid, 7311 Invalid, 4237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 4197 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-19 18:07:16,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7435 states. [2022-07-19 18:07:17,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7435 to 3698. [2022-07-19 18:07:17,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3698 states, 3697 states have (on average 1.3362185555856099) internal successors, (4940), 3697 states have internal predecessors, (4940), 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) [2022-07-19 18:07:17,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3698 states to 3698 states and 4940 transitions. [2022-07-19 18:07:17,418 INFO L78 Accepts]: Start accepts. Automaton has 3698 states and 4940 transitions. Word has length 64 [2022-07-19 18:07:17,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:07:17,418 INFO L495 AbstractCegarLoop]: Abstraction has 3698 states and 4940 transitions. [2022-07-19 18:07:17,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 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) [2022-07-19 18:07:17,418 INFO L276 IsEmpty]: Start isEmpty. Operand 3698 states and 4940 transitions. [2022-07-19 18:07:17,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-19 18:07:17,419 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:07:17,419 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] [2022-07-19 18:07:17,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 18:07:17,420 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:07:17,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:07:17,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1079669093, now seen corresponding path program 1 times [2022-07-19 18:07:17,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:07:17,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751824844] [2022-07-19 18:07:17,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:07:17,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:07:17,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:07:17,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:07:17,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:07:17,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751824844] [2022-07-19 18:07:17,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751824844] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:07:17,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:07:17,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:07:17,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450887615] [2022-07-19 18:07:17,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:07:17,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:07:17,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:07:17,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:07:17,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:07:17,447 INFO L87 Difference]: Start difference. First operand 3698 states and 4940 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2022-07-19 18:07:18,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:07:18,557 INFO L93 Difference]: Finished difference Result 6782 states and 9122 transitions. [2022-07-19 18:07:18,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:07:18,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2022-07-19 18:07:18,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:07:18,566 INFO L225 Difference]: With dead ends: 6782 [2022-07-19 18:07:18,566 INFO L226 Difference]: Without dead ends: 4960 [2022-07-19 18:07:18,569 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 [2022-07-19 18:07:18,570 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 173 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:07:18,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 344 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:07:18,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4960 states. [2022-07-19 18:07:19,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4960 to 3488. [2022-07-19 18:07:19,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3488 states, 3487 states have (on average 1.335818755377115) internal successors, (4658), 3487 states have internal predecessors, (4658), 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) [2022-07-19 18:07:19,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3488 states to 3488 states and 4658 transitions. [2022-07-19 18:07:19,321 INFO L78 Accepts]: Start accepts. Automaton has 3488 states and 4658 transitions. Word has length 64 [2022-07-19 18:07:19,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:07:19,321 INFO L495 AbstractCegarLoop]: Abstraction has 3488 states and 4658 transitions. [2022-07-19 18:07:19,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2022-07-19 18:07:19,321 INFO L276 IsEmpty]: Start isEmpty. Operand 3488 states and 4658 transitions. [2022-07-19 18:07:19,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-19 18:07:19,322 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:07:19,323 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] [2022-07-19 18:07:19,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-19 18:07:19,323 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:07:19,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:07:19,323 INFO L85 PathProgramCache]: Analyzing trace with hash 2017308149, now seen corresponding path program 1 times [2022-07-19 18:07:19,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:07:19,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733018776] [2022-07-19 18:07:19,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:07:19,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:07:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:07:19,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:07:19,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:07:19,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733018776] [2022-07-19 18:07:19,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733018776] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:07:19,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:07:19,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:07:19,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306099409] [2022-07-19 18:07:19,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:07:19,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:07:19,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:07:19,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:07:19,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:07:19,344 INFO L87 Difference]: Start difference. First operand 3488 states and 4658 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2022-07-19 18:07:20,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:07:20,389 INFO L93 Difference]: Finished difference Result 6445 states and 8659 transitions. [2022-07-19 18:07:20,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:07:20,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2022-07-19 18:07:20,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:07:20,394 INFO L225 Difference]: With dead ends: 6445 [2022-07-19 18:07:20,394 INFO L226 Difference]: Without dead ends: 4645 [2022-07-19 18:07:20,397 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 [2022-07-19 18:07:20,397 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 166 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:07:20,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 331 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:07:20,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4645 states. [2022-07-19 18:07:21,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4645 to 3269. [2022-07-19 18:07:21,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3269 states, 3268 states have (on average 1.3347613219094248) internal successors, (4362), 3268 states have internal predecessors, (4362), 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) [2022-07-19 18:07:21,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3269 states to 3269 states and 4362 transitions. [2022-07-19 18:07:21,150 INFO L78 Accepts]: Start accepts. Automaton has 3269 states and 4362 transitions. Word has length 64 [2022-07-19 18:07:21,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:07:21,150 INFO L495 AbstractCegarLoop]: Abstraction has 3269 states and 4362 transitions. [2022-07-19 18:07:21,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2022-07-19 18:07:21,150 INFO L276 IsEmpty]: Start isEmpty. Operand 3269 states and 4362 transitions. [2022-07-19 18:07:21,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 18:07:21,152 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:07:21,152 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] [2022-07-19 18:07:21,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-19 18:07:21,153 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:07:21,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:07:21,154 INFO L85 PathProgramCache]: Analyzing trace with hash 144276108, now seen corresponding path program 1 times [2022-07-19 18:07:21,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:07:21,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428429438] [2022-07-19 18:07:21,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:07:21,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:07:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:07:21,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:07:21,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:07:21,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428429438] [2022-07-19 18:07:21,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428429438] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:07:21,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:07:21,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-19 18:07:21,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320563795] [2022-07-19 18:07:21,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:07:21,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 18:07:21,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:07:21,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 18:07:21,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-07-19 18:07:21,428 INFO L87 Difference]: Start difference. First operand 3269 states and 4362 transitions. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 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) [2022-07-19 18:07:24,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:07:24,326 INFO L93 Difference]: Finished difference Result 7419 states and 9996 transitions. [2022-07-19 18:07:24,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 18:07:24,327 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 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 65 [2022-07-19 18:07:24,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:07:24,334 INFO L225 Difference]: With dead ends: 7419 [2022-07-19 18:07:24,334 INFO L226 Difference]: Without dead ends: 7071 [2022-07-19 18:07:24,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2022-07-19 18:07:24,336 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 1501 mSDsluCounter, 2654 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1501 SdHoareTripleChecker+Valid, 3060 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 18:07:24,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1501 Valid, 3060 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 18:07:24,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7071 states. [2022-07-19 18:07:25,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7071 to 3203. [2022-07-19 18:07:25,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3203 states, 3202 states have (on average 1.3357276702061212) internal successors, (4277), 3202 states have internal predecessors, (4277), 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) [2022-07-19 18:07:25,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3203 states to 3203 states and 4277 transitions. [2022-07-19 18:07:25,145 INFO L78 Accepts]: Start accepts. Automaton has 3203 states and 4277 transitions. Word has length 65 [2022-07-19 18:07:25,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:07:25,145 INFO L495 AbstractCegarLoop]: Abstraction has 3203 states and 4277 transitions. [2022-07-19 18:07:25,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 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) [2022-07-19 18:07:25,145 INFO L276 IsEmpty]: Start isEmpty. Operand 3203 states and 4277 transitions. [2022-07-19 18:07:25,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 18:07:25,147 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:07:25,147 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] [2022-07-19 18:07:25,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-19 18:07:25,147 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:07:25,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:07:25,147 INFO L85 PathProgramCache]: Analyzing trace with hash 402441546, now seen corresponding path program 1 times [2022-07-19 18:07:25,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:07:25,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769704310] [2022-07-19 18:07:25,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:07:25,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:07:25,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:07:25,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:07:25,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:07:25,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769704310] [2022-07-19 18:07:25,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769704310] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:07:25,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:07:25,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-19 18:07:25,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700351398] [2022-07-19 18:07:25,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:07:25,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-19 18:07:25,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:07:25,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-19 18:07:25,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-07-19 18:07:25,498 INFO L87 Difference]: Start difference. First operand 3203 states and 4277 transitions. Second operand has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 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) [2022-07-19 18:07:30,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:07:30,183 INFO L93 Difference]: Finished difference Result 8369 states and 11302 transitions. [2022-07-19 18:07:30,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-19 18:07:30,184 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 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 65 [2022-07-19 18:07:30,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:07:30,191 INFO L225 Difference]: With dead ends: 8369 [2022-07-19 18:07:30,191 INFO L226 Difference]: Without dead ends: 8044 [2022-07-19 18:07:30,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=378, Invalid=1344, Unknown=0, NotChecked=0, Total=1722 [2022-07-19 18:07:30,193 INFO L413 NwaCegarLoop]: 678 mSDtfsCounter, 2039 mSDsluCounter, 5738 mSDsCounter, 0 mSdLazyCounter, 1833 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2039 SdHoareTripleChecker+Valid, 6416 SdHoareTripleChecker+Invalid, 1864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:07:30,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2039 Valid, 6416 Invalid, 1864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1833 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 18:07:30,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8044 states. [2022-07-19 18:07:31,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8044 to 3142. [2022-07-19 18:07:31,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3142 states, 3141 states have (on average 1.3358802929003502) internal successors, (4196), 3141 states have internal predecessors, (4196), 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) [2022-07-19 18:07:31,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3142 states to 3142 states and 4196 transitions. [2022-07-19 18:07:31,142 INFO L78 Accepts]: Start accepts. Automaton has 3142 states and 4196 transitions. Word has length 65 [2022-07-19 18:07:31,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:07:31,142 INFO L495 AbstractCegarLoop]: Abstraction has 3142 states and 4196 transitions. [2022-07-19 18:07:31,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 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) [2022-07-19 18:07:31,142 INFO L276 IsEmpty]: Start isEmpty. Operand 3142 states and 4196 transitions. [2022-07-19 18:07:31,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-19 18:07:31,144 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:07:31,144 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] [2022-07-19 18:07:31,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-19 18:07:31,144 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:07:31,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:07:31,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1563174538, now seen corresponding path program 1 times [2022-07-19 18:07:31,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:07:31,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303329721] [2022-07-19 18:07:31,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:07:31,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:07:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:07:31,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:07:31,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:07:31,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303329721] [2022-07-19 18:07:31,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303329721] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:07:31,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:07:31,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 18:07:31,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134929985] [2022-07-19 18:07:31,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:07:31,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:07:31,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:07:31,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:07:31,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:07:31,197 INFO L87 Difference]: Start difference. First operand 3142 states and 4196 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-19 18:07:32,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:07:32,222 INFO L93 Difference]: Finished difference Result 3148 states and 4199 transitions. [2022-07-19 18:07:32,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 18:07:32,223 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-07-19 18:07:32,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:07:32,225 INFO L225 Difference]: With dead ends: 3148 [2022-07-19 18:07:32,225 INFO L226 Difference]: Without dead ends: 2705 [2022-07-19 18:07:32,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:07:32,226 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 422 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:07:32,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 752 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:07:32,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2705 states. [2022-07-19 18:07:33,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2705 to 2701. [2022-07-19 18:07:33,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2701 states, 2700 states have (on average 1.3403703703703704) internal successors, (3619), 2700 states have internal predecessors, (3619), 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) [2022-07-19 18:07:33,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2701 states to 2701 states and 3619 transitions. [2022-07-19 18:07:33,056 INFO L78 Accepts]: Start accepts. Automaton has 2701 states and 3619 transitions. Word has length 69 [2022-07-19 18:07:33,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:07:33,057 INFO L495 AbstractCegarLoop]: Abstraction has 2701 states and 3619 transitions. [2022-07-19 18:07:33,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-19 18:07:33,057 INFO L276 IsEmpty]: Start isEmpty. Operand 2701 states and 3619 transitions. [2022-07-19 18:07:33,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-19 18:07:33,058 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:07:33,058 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:07:33,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-19 18:07:33,058 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:07:33,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:07:33,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1535111263, now seen corresponding path program 1 times [2022-07-19 18:07:33,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:07:33,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143331683] [2022-07-19 18:07:33,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:07:33,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:07:33,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:07:33,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:07:33,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:07:33,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143331683] [2022-07-19 18:07:33,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143331683] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:07:33,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:07:33,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:07:33,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737000781] [2022-07-19 18:07:33,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:07:33,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:07:33,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:07:33,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:07:33,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:07:33,090 INFO L87 Difference]: Start difference. First operand 2701 states and 3619 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:07:34,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:07:34,776 INFO L93 Difference]: Finished difference Result 6990 states and 9463 transitions. [2022-07-19 18:07:34,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:07:34,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-07-19 18:07:34,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:07:34,781 INFO L225 Difference]: With dead ends: 6990 [2022-07-19 18:07:34,781 INFO L226 Difference]: Without dead ends: 4682 [2022-07-19 18:07:34,784 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 [2022-07-19 18:07:34,784 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 113 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:07:34,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 426 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:07:34,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4682 states. [2022-07-19 18:07:36,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4682 to 4386. [2022-07-19 18:07:36,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4386 states, 4385 states have (on average 1.3388825541619156) internal successors, (5871), 4385 states have internal predecessors, (5871), 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) [2022-07-19 18:07:36,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4386 states to 4386 states and 5871 transitions. [2022-07-19 18:07:36,225 INFO L78 Accepts]: Start accepts. Automaton has 4386 states and 5871 transitions. Word has length 72 [2022-07-19 18:07:36,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:07:36,225 INFO L495 AbstractCegarLoop]: Abstraction has 4386 states and 5871 transitions. [2022-07-19 18:07:36,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:07:36,226 INFO L276 IsEmpty]: Start isEmpty. Operand 4386 states and 5871 transitions. [2022-07-19 18:07:36,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-19 18:07:36,227 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:07:36,227 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] [2022-07-19 18:07:36,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-19 18:07:36,227 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:07:36,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:07:36,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1480821562, now seen corresponding path program 1 times [2022-07-19 18:07:36,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:07:36,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684428177] [2022-07-19 18:07:36,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:07:36,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:07:36,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:07:36,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:07:36,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:07:36,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684428177] [2022-07-19 18:07:36,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684428177] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:07:36,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:07:36,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:07:36,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542293516] [2022-07-19 18:07:36,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:07:36,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:07:36,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:07:36,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:07:36,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:07:36,258 INFO L87 Difference]: Start difference. First operand 4386 states and 5871 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2022-07-19 18:07:39,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:07:39,012 INFO L93 Difference]: Finished difference Result 11938 states and 16077 transitions. [2022-07-19 18:07:39,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:07:39,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 73 [2022-07-19 18:07:39,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:07:39,021 INFO L225 Difference]: With dead ends: 11938 [2022-07-19 18:07:39,021 INFO L226 Difference]: Without dead ends: 7957 [2022-07-19 18:07:39,024 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 [2022-07-19 18:07:39,025 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 103 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:07:39,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 418 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:07:39,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7957 states. [2022-07-19 18:07:41,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7957 to 7367. [2022-07-19 18:07:41,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7367 states, 7366 states have (on average 1.3349171870757535) internal successors, (9833), 7366 states have internal predecessors, (9833), 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) [2022-07-19 18:07:41,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7367 states to 7367 states and 9833 transitions. [2022-07-19 18:07:41,558 INFO L78 Accepts]: Start accepts. Automaton has 7367 states and 9833 transitions. Word has length 73 [2022-07-19 18:07:41,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:07:41,558 INFO L495 AbstractCegarLoop]: Abstraction has 7367 states and 9833 transitions. [2022-07-19 18:07:41,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2022-07-19 18:07:41,558 INFO L276 IsEmpty]: Start isEmpty. Operand 7367 states and 9833 transitions. [2022-07-19 18:07:41,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-19 18:07:41,560 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:07:41,560 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] [2022-07-19 18:07:41,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-19 18:07:41,560 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:07:41,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:07:41,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1423402598, now seen corresponding path program 1 times [2022-07-19 18:07:41,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:07:41,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151183594] [2022-07-19 18:07:41,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:07:41,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:07:41,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:07:41,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:07:41,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:07:41,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151183594] [2022-07-19 18:07:41,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151183594] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:07:41,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:07:41,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:07:41,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870215644] [2022-07-19 18:07:41,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:07:41,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:07:41,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:07:41,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:07:41,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:07:41,590 INFO L87 Difference]: Start difference. First operand 7367 states and 9833 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2022-07-19 18:07:46,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:07:46,277 INFO L93 Difference]: Finished difference Result 20471 states and 27331 transitions. [2022-07-19 18:07:46,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:07:46,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 74 [2022-07-19 18:07:46,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:07:46,292 INFO L225 Difference]: With dead ends: 20471 [2022-07-19 18:07:46,292 INFO L226 Difference]: Without dead ends: 13509 [2022-07-19 18:07:46,299 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 [2022-07-19 18:07:46,299 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 93 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:07:46,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 408 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:07:46,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13509 states. [2022-07-19 18:07:50,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13509 to 12331. [2022-07-19 18:07:50,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12331 states, 12330 states have (on average 1.3220600162206002) internal successors, (16301), 12330 states have internal predecessors, (16301), 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) [2022-07-19 18:07:50,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12331 states to 12331 states and 16301 transitions. [2022-07-19 18:07:50,625 INFO L78 Accepts]: Start accepts. Automaton has 12331 states and 16301 transitions. Word has length 74 [2022-07-19 18:07:50,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:07:50,625 INFO L495 AbstractCegarLoop]: Abstraction has 12331 states and 16301 transitions. [2022-07-19 18:07:50,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2022-07-19 18:07:50,626 INFO L276 IsEmpty]: Start isEmpty. Operand 12331 states and 16301 transitions. [2022-07-19 18:07:50,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-19 18:07:50,649 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:07:50,649 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] [2022-07-19 18:07:50,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-19 18:07:50,650 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:07:50,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:07:50,650 INFO L85 PathProgramCache]: Analyzing trace with hash 2071973989, now seen corresponding path program 1 times [2022-07-19 18:07:50,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:07:50,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12772074] [2022-07-19 18:07:50,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:07:50,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:07:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:07:50,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:07:50,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:07:50,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12772074] [2022-07-19 18:07:50,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12772074] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:07:50,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:07:50,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 18:07:50,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858615259] [2022-07-19 18:07:50,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:07:50,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 18:07:50,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:07:50,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 18:07:50,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 18:07:50,736 INFO L87 Difference]: Start difference. First operand 12331 states and 16301 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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) [2022-07-19 18:08:01,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:08:01,023 INFO L93 Difference]: Finished difference Result 26363 states and 34333 transitions. [2022-07-19 18:08:01,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 18:08:01,024 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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 77 [2022-07-19 18:08:01,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:08:01,056 INFO L225 Difference]: With dead ends: 26363 [2022-07-19 18:08:01,057 INFO L226 Difference]: Without dead ends: 26361 [2022-07-19 18:08:01,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-19 18:08:01,063 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 327 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:08:01,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 980 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:08:01,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26361 states. [2022-07-19 18:08:06,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26361 to 13603. [2022-07-19 18:08:06,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13603 states, 13602 states have (on average 1.2919423614174386) internal successors, (17573), 13602 states have internal predecessors, (17573), 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) [2022-07-19 18:08:06,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13603 states to 13603 states and 17573 transitions. [2022-07-19 18:08:06,441 INFO L78 Accepts]: Start accepts. Automaton has 13603 states and 17573 transitions. Word has length 77 [2022-07-19 18:08:06,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:08:06,441 INFO L495 AbstractCegarLoop]: Abstraction has 13603 states and 17573 transitions. [2022-07-19 18:08:06,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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) [2022-07-19 18:08:06,442 INFO L276 IsEmpty]: Start isEmpty. Operand 13603 states and 17573 transitions. [2022-07-19 18:08:06,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-19 18:08:06,443 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:08:06,443 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] [2022-07-19 18:08:06,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-19 18:08:06,443 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:08:06,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:08:06,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1914492299, now seen corresponding path program 1 times [2022-07-19 18:08:06,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:08:06,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671966648] [2022-07-19 18:08:06,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:08:06,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:08:06,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:08:06,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:08:06,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:08:06,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671966648] [2022-07-19 18:08:06,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671966648] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:08:06,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:08:06,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:08:06,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927386950] [2022-07-19 18:08:06,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:08:06,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:08:06,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:08:06,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:08:06,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:08:06,474 INFO L87 Difference]: Start difference. First operand 13603 states and 17573 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2022-07-19 18:08:14,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:08:14,339 INFO L93 Difference]: Finished difference Result 33419 states and 42967 transitions. [2022-07-19 18:08:14,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:08:14,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2022-07-19 18:08:14,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:08:14,375 INFO L225 Difference]: With dead ends: 33419 [2022-07-19 18:08:14,375 INFO L226 Difference]: Without dead ends: 20221 [2022-07-19 18:08:14,391 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 [2022-07-19 18:08:14,392 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 129 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:08:14,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 338 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:08:14,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20221 states. [2022-07-19 18:08:22,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20221 to 20219. [2022-07-19 18:08:22,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20219 states, 20218 states have (on average 1.2678306459590465) internal successors, (25633), 20218 states have internal predecessors, (25633), 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) [2022-07-19 18:08:22,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20219 states to 20219 states and 25633 transitions. [2022-07-19 18:08:22,588 INFO L78 Accepts]: Start accepts. Automaton has 20219 states and 25633 transitions. Word has length 78 [2022-07-19 18:08:22,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:08:22,589 INFO L495 AbstractCegarLoop]: Abstraction has 20219 states and 25633 transitions. [2022-07-19 18:08:22,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2022-07-19 18:08:22,589 INFO L276 IsEmpty]: Start isEmpty. Operand 20219 states and 25633 transitions. [2022-07-19 18:08:22,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-19 18:08:22,593 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:08:22,593 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:08:22,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-19 18:08:22,594 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:08:22,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:08:22,594 INFO L85 PathProgramCache]: Analyzing trace with hash 660908331, now seen corresponding path program 1 times [2022-07-19 18:08:22,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:08:22,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394269465] [2022-07-19 18:08:22,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:08:22,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:08:22,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:08:22,717 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:08:22,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:08:22,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394269465] [2022-07-19 18:08:22,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394269465] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 18:08:22,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848527552] [2022-07-19 18:08:22,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:08:22,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 18:08:22,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 18:08:22,720 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 18:08:22,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 18:08:22,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:08:22,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-19 18:08:22,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 18:08:24,130 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:08:24,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 18:08:25,281 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:08:25,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848527552] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 18:08:25,281 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 18:08:25,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 31 [2022-07-19 18:08:25,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728178906] [2022-07-19 18:08:25,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 18:08:25,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-19 18:08:25,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:08:25,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-19 18:08:25,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=878, Unknown=0, NotChecked=0, Total=992 [2022-07-19 18:08:25,283 INFO L87 Difference]: Start difference. First operand 20219 states and 25633 transitions. Second operand has 32 states, 32 states have (on average 8.0) internal successors, (256), 31 states have internal predecessors, (256), 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)