./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-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 9674251da7d9ff9045cc98880d6752b693163f5c0467dc21f0f16b64a076bd08 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 11:58:52,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 11:58:52,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 11:58:52,980 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 11:58:52,991 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 11:58:52,993 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 11:58:52,994 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 11:58:52,995 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 11:58:52,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 11:58:53,000 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 11:58:53,000 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 11:58:53,001 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 11:58:53,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 11:58:53,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 11:58:53,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 11:58:53,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 11:58:53,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 11:58:53,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 11:58:53,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 11:58:53,014 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 11:58:53,016 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 11:58:53,016 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 11:58:53,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 11:58:53,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 11:58:53,020 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 11:58:53,020 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 11:58:53,020 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 11:58:53,021 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 11:58:53,021 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 11:58:53,022 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 11:58:53,022 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 11:58:53,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 11:58:53,023 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 11:58:53,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 11:58:53,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 11:58:53,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 11:58:53,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 11:58:53,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 11:58:53,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 11:58:53,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 11:58:53,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 11:58:53,028 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 11:58:53,045 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 11:58:53,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 11:58:53,045 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 11:58:53,045 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 11:58:53,046 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 11:58:53,046 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 11:58:53,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 11:58:53,047 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 11:58:53,047 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 11:58:53,047 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 11:58:53,047 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 11:58:53,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 11:58:53,047 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 11:58:53,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 11:58:53,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 11:58:53,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 11:58:53,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 11:58:53,048 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 11:58:53,048 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 11:58:53,048 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 11:58:53,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 11:58:53,049 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 11:58:53,049 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 11:58:53,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 11:58:53,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 11:58:53,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 11:58:53,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 11:58:53,049 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 11:58:53,050 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 11:58:53,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 11:58:53,050 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 11:58:53,050 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 11:58:53,050 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 11:58:53,050 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 11:58:53,050 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9674251da7d9ff9045cc98880d6752b693163f5c0467dc21f0f16b64a076bd08 [2021-12-22 11:58:53,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 11:58:53,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 11:58:53,274 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 11:58:53,275 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 11:58:53,275 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 11:58:53,276 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-12-22 11:58:53,334 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ed7ce1f0/8617844243134bb7af7ec63d001207b0/FLAGc51838ee0 [2021-12-22 11:58:53,813 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 11:58:53,813 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-12-22 11:58:53,826 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ed7ce1f0/8617844243134bb7af7ec63d001207b0/FLAGc51838ee0 [2021-12-22 11:58:53,838 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ed7ce1f0/8617844243134bb7af7ec63d001207b0 [2021-12-22 11:58:53,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 11:58:53,842 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 11:58:53,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 11:58:53,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 11:58:53,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 11:58:53,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:58:53" (1/1) ... [2021-12-22 11:58:53,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@751736de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:58:53, skipping insertion in model container [2021-12-22 11:58:53,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:58:53" (1/1) ... [2021-12-22 11:58:53,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 11:58:53,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 11:58:54,111 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14166,14179] [2021-12-22 11:58:54,122 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15226,15239] [2021-12-22 11:58:54,170 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[26532,26545] [2021-12-22 11:58:54,175 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[27179,27192] [2021-12-22 11:58:54,181 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[28412,28425] [2021-12-22 11:58:54,197 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 11:58:54,211 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 11:58:54,278 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14166,14179] [2021-12-22 11:58:54,282 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15226,15239] [2021-12-22 11:58:54,322 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[26532,26545] [2021-12-22 11:58:54,325 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[27179,27192] [2021-12-22 11:58:54,330 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[28412,28425] [2021-12-22 11:58:54,343 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 11:58:54,354 INFO L208 MainTranslator]: Completed translation [2021-12-22 11:58:54,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:58:54 WrapperNode [2021-12-22 11:58:54,355 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 11:58:54,356 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 11:58:54,356 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 11:58:54,356 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 11:58:54,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:58:54" (1/1) ... [2021-12-22 11:58:54,383 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:58:54" (1/1) ... [2021-12-22 11:58:54,423 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1558 [2021-12-22 11:58:54,424 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 11:58:54,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 11:58:54,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 11:58:54,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 11:58:54,437 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:58:54" (1/1) ... [2021-12-22 11:58:54,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:58:54" (1/1) ... [2021-12-22 11:58:54,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:58:54" (1/1) ... [2021-12-22 11:58:54,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:58:54" (1/1) ... [2021-12-22 11:58:54,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:58:54" (1/1) ... [2021-12-22 11:58:54,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:58:54" (1/1) ... [2021-12-22 11:58:54,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:58:54" (1/1) ... [2021-12-22 11:58:54,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 11:58:54,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 11:58:54,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 11:58:54,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 11:58:54,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:58:54" (1/1) ... [2021-12-22 11:58:54,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 11:58:54,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:58:54,528 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) [2021-12-22 11:58:54,535 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 [2021-12-22 11:58:54,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 11:58:54,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 11:58:54,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 11:58:54,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 11:58:54,723 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 11:58:54,725 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 11:58:55,513 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 11:58:55,520 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 11:58:55,520 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 11:58:55,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:58:55 BoogieIcfgContainer [2021-12-22 11:58:55,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 11:58:55,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 11:58:55,523 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 11:58:55,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 11:58:55,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:58:53" (1/3) ... [2021-12-22 11:58:55,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7049246f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:58:55, skipping insertion in model container [2021-12-22 11:58:55,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:58:54" (2/3) ... [2021-12-22 11:58:55,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7049246f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:58:55, skipping insertion in model container [2021-12-22 11:58:55,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:58:55" (3/3) ... [2021-12-22 11:58:55,528 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-12-22 11:58:55,531 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 11:58:55,531 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-12-22 11:58:55,562 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 11:58:55,566 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 11:58:55,566 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-12-22 11:58:55,582 INFO L276 IsEmpty]: Start isEmpty. Operand has 377 states, 371 states have (on average 1.8274932614555257) internal successors, (678), 376 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:58:55,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-22 11:58:55,591 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:58:55,591 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:58:55,592 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-22 11:58:55,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:58:55,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1203570768, now seen corresponding path program 1 times [2021-12-22 11:58:55,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:58:55,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301874038] [2021-12-22 11:58:55,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:58:55,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:58:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:58:56,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 11:58:56,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:58:56,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301874038] [2021-12-22 11:58:56,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301874038] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:58:56,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:58:56,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 11:58:56,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623997062] [2021-12-22 11:58:56,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:58:56,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 11:58:56,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:58:56,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 11:58:56,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 11:58:56,137 INFO L87 Difference]: Start difference. First operand has 377 states, 371 states have (on average 1.8274932614555257) internal successors, (678), 376 states have internal predecessors, (678), 0 states have call successors, (0), 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 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:58:56,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:58:56,331 INFO L93 Difference]: Finished difference Result 1100 states and 1983 transitions. [2021-12-22 11:58:56,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 11:58:56,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2021-12-22 11:58:56,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:58:56,352 INFO L225 Difference]: With dead ends: 1100 [2021-12-22 11:58:56,353 INFO L226 Difference]: Without dead ends: 726 [2021-12-22 11:58:56,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 11:58:56,366 INFO L933 BasicCegarLoop]: 1178 mSDtfsCounter, 1376 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1376 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 11:58:56,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1376 Valid, 1801 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 11:58:56,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2021-12-22 11:58:56,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 701. [2021-12-22 11:58:56,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 696 states have (on average 1.4425287356321839) internal successors, (1004), 700 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:58:56,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1004 transitions. [2021-12-22 11:58:56,478 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1004 transitions. Word has length 139 [2021-12-22 11:58:56,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:58:56,478 INFO L470 AbstractCegarLoop]: Abstraction has 701 states and 1004 transitions. [2021-12-22 11:58:56,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:58:56,479 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1004 transitions. [2021-12-22 11:58:56,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-22 11:58:56,489 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:58:56,489 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:58:56,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 11:58:56,490 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-22 11:58:56,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:58:56,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1141139268, now seen corresponding path program 1 times [2021-12-22 11:58:56,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:58:56,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073849852] [2021-12-22 11:58:56,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:58:56,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:58:56,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:58:56,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 11:58:56,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:58:56,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073849852] [2021-12-22 11:58:56,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073849852] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:58:56,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:58:56,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 11:58:56,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569225006] [2021-12-22 11:58:56,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:58:56,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 11:58:56,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:58:56,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 11:58:56,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 11:58:56,586 INFO L87 Difference]: Start difference. First operand 701 states and 1004 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:58:56,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:58:56,650 INFO L93 Difference]: Finished difference Result 2065 states and 2950 transitions. [2021-12-22 11:58:56,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 11:58:56,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2021-12-22 11:58:56,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:58:56,656 INFO L225 Difference]: With dead ends: 2065 [2021-12-22 11:58:56,656 INFO L226 Difference]: Without dead ends: 1392 [2021-12-22 11:58:56,658 INFO L932 BasicCegarLoop]: 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 [2021-12-22 11:58:56,659 INFO L933 BasicCegarLoop]: 1060 mSDtfsCounter, 526 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 11:58:56,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [526 Valid, 1588 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 11:58:56,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2021-12-22 11:58:56,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 703. [2021-12-22 11:58:56,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 698 states have (on average 1.4412607449856734) internal successors, (1006), 702 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:58:56,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1006 transitions. [2021-12-22 11:58:56,705 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1006 transitions. Word has length 140 [2021-12-22 11:58:56,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:58:56,706 INFO L470 AbstractCegarLoop]: Abstraction has 703 states and 1006 transitions. [2021-12-22 11:58:56,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:58:56,707 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1006 transitions. [2021-12-22 11:58:56,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-22 11:58:56,708 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:58:56,709 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:58:56,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 11:58:56,712 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-22 11:58:56,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:58:56,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1084924930, now seen corresponding path program 1 times [2021-12-22 11:58:56,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:58:56,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579564407] [2021-12-22 11:58:56,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:58:56,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:58:56,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:58:56,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 11:58:56,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:58:56,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579564407] [2021-12-22 11:58:56,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579564407] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:58:56,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:58:56,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 11:58:56,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681316431] [2021-12-22 11:58:56,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:58:56,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 11:58:56,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:58:56,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 11:58:56,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 11:58:56,800 INFO L87 Difference]: Start difference. First operand 703 states and 1006 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:58:56,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:58:56,910 INFO L93 Difference]: Finished difference Result 1889 states and 2711 transitions. [2021-12-22 11:58:56,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 11:58:56,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 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 141 [2021-12-22 11:58:56,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:58:56,915 INFO L225 Difference]: With dead ends: 1889 [2021-12-22 11:58:56,915 INFO L226 Difference]: Without dead ends: 1364 [2021-12-22 11:58:56,917 INFO L932 BasicCegarLoop]: 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 [2021-12-22 11:58:56,919 INFO L933 BasicCegarLoop]: 985 mSDtfsCounter, 463 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 11:58:56,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 1478 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 11:58:56,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2021-12-22 11:58:56,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1339. [2021-12-22 11:58:56,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1339 states, 1334 states have (on average 1.4295352323838082) internal successors, (1907), 1338 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:58:56,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 1907 transitions. [2021-12-22 11:58:56,985 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 1907 transitions. Word has length 141 [2021-12-22 11:58:56,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:58:56,986 INFO L470 AbstractCegarLoop]: Abstraction has 1339 states and 1907 transitions. [2021-12-22 11:58:56,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:58:56,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 1907 transitions. [2021-12-22 11:58:56,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-22 11:58:56,988 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:58:56,988 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:58:56,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 11:58:56,989 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-22 11:58:56,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:58:56,990 INFO L85 PathProgramCache]: Analyzing trace with hash -980453119, now seen corresponding path program 1 times [2021-12-22 11:58:56,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:58:56,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916242896] [2021-12-22 11:58:56,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:58:56,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:58:57,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:58:57,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 11:58:57,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:58:57,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916242896] [2021-12-22 11:58:57,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916242896] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:58:57,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:58:57,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 11:58:57,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128757527] [2021-12-22 11:58:57,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:58:57,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 11:58:57,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:58:57,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 11:58:57,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 11:58:57,131 INFO L87 Difference]: Start difference. First operand 1339 states and 1907 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:58:57,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:58:57,316 INFO L93 Difference]: Finished difference Result 3750 states and 5334 transitions. [2021-12-22 11:58:57,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 11:58:57,316 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 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 141 [2021-12-22 11:58:57,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:58:57,323 INFO L225 Difference]: With dead ends: 3750 [2021-12-22 11:58:57,324 INFO L226 Difference]: Without dead ends: 2425 [2021-12-22 11:58:57,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 11:58:57,326 INFO L933 BasicCegarLoop]: 920 mSDtfsCounter, 1573 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1573 SdHoareTripleChecker+Valid, 1399 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 11:58:57,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1573 Valid, 1399 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 11:58:57,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2021-12-22 11:58:57,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2403. [2021-12-22 11:58:57,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2403 states, 2398 states have (on average 1.4132610508757297) internal successors, (3389), 2402 states have internal predecessors, (3389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:58:57,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2403 states to 2403 states and 3389 transitions. [2021-12-22 11:58:57,444 INFO L78 Accepts]: Start accepts. Automaton has 2403 states and 3389 transitions. Word has length 141 [2021-12-22 11:58:57,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:58:57,445 INFO L470 AbstractCegarLoop]: Abstraction has 2403 states and 3389 transitions. [2021-12-22 11:58:57,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:58:57,445 INFO L276 IsEmpty]: Start isEmpty. Operand 2403 states and 3389 transitions. [2021-12-22 11:58:57,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-22 11:58:57,448 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:58:57,448 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:58:57,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 11:58:57,448 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-22 11:58:57,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:58:57,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1926899985, now seen corresponding path program 1 times [2021-12-22 11:58:57,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:58:57,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559448753] [2021-12-22 11:58:57,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:58:57,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:58:57,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:58:57,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 11:58:57,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:58:57,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559448753] [2021-12-22 11:58:57,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559448753] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:58:57,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:58:57,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 11:58:57,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7863157] [2021-12-22 11:58:57,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:58:57,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 11:58:57,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:58:57,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 11:58:57,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 11:58:57,525 INFO L87 Difference]: Start difference. First operand 2403 states and 3389 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:58:57,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:58:57,789 INFO L93 Difference]: Finished difference Result 7000 states and 9834 transitions. [2021-12-22 11:58:57,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 11:58:57,790 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 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 141 [2021-12-22 11:58:57,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:58:57,802 INFO L225 Difference]: With dead ends: 7000 [2021-12-22 11:58:57,803 INFO L226 Difference]: Without dead ends: 4653 [2021-12-22 11:58:57,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 11:58:57,806 INFO L933 BasicCegarLoop]: 926 mSDtfsCounter, 1057 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 11:58:57,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1057 Valid, 1417 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 11:58:57,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4653 states. [2021-12-22 11:58:58,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4653 to 4626. [2021-12-22 11:58:58,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4626 states, 4621 states have (on average 1.396018177883575) internal successors, (6451), 4625 states have internal predecessors, (6451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:58:58,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4626 states to 4626 states and 6451 transitions. [2021-12-22 11:58:58,066 INFO L78 Accepts]: Start accepts. Automaton has 4626 states and 6451 transitions. Word has length 141 [2021-12-22 11:58:58,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:58:58,066 INFO L470 AbstractCegarLoop]: Abstraction has 4626 states and 6451 transitions. [2021-12-22 11:58:58,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:58:58,068 INFO L276 IsEmpty]: Start isEmpty. Operand 4626 states and 6451 transitions. [2021-12-22 11:58:58,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-22 11:58:58,072 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:58:58,072 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:58:58,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 11:58:58,073 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-22 11:58:58,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:58:58,073 INFO L85 PathProgramCache]: Analyzing trace with hash 349588475, now seen corresponding path program 1 times [2021-12-22 11:58:58,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:58:58,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125959746] [2021-12-22 11:58:58,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:58:58,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:58:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:58:58,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 11:58:58,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:58:58,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125959746] [2021-12-22 11:58:58,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125959746] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:58:58,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:58:58,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 11:58:58,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258572054] [2021-12-22 11:58:58,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:58:58,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 11:58:58,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:58:58,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 11:58:58,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 11:58:58,110 INFO L87 Difference]: Start difference. First operand 4626 states and 6451 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:58:58,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:58:58,546 INFO L93 Difference]: Finished difference Result 13726 states and 19120 transitions. [2021-12-22 11:58:58,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 11:58:58,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2021-12-22 11:58:58,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:58:58,573 INFO L225 Difference]: With dead ends: 13726 [2021-12-22 11:58:58,573 INFO L226 Difference]: Without dead ends: 9191 [2021-12-22 11:58:58,580 INFO L932 BasicCegarLoop]: 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 [2021-12-22 11:58:58,581 INFO L933 BasicCegarLoop]: 609 mSDtfsCounter, 512 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 11:58:58,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [512 Valid, 1137 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 11:58:58,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9191 states. [2021-12-22 11:58:58,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9191 to 4636. [2021-12-22 11:58:58,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4636 states, 4631 states have (on average 1.3951630317426043) internal successors, (6461), 4635 states have internal predecessors, (6461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:58:58,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4636 states to 4636 states and 6461 transitions. [2021-12-22 11:58:58,879 INFO L78 Accepts]: Start accepts. Automaton has 4636 states and 6461 transitions. Word has length 142 [2021-12-22 11:58:58,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:58:58,879 INFO L470 AbstractCegarLoop]: Abstraction has 4636 states and 6461 transitions. [2021-12-22 11:58:58,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:58:58,879 INFO L276 IsEmpty]: Start isEmpty. Operand 4636 states and 6461 transitions. [2021-12-22 11:58:58,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-22 11:58:58,884 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:58:58,884 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:58:58,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 11:58:58,884 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-22 11:58:58,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:58:58,885 INFO L85 PathProgramCache]: Analyzing trace with hash -88637170, now seen corresponding path program 1 times [2021-12-22 11:58:58,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:58:58,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863190790] [2021-12-22 11:58:58,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:58:58,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:58:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:58:58,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 11:58:58,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:58:58,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863190790] [2021-12-22 11:58:58,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863190790] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:58:58,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:58:58,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 11:58:58,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438998997] [2021-12-22 11:58:58,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:58:59,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 11:58:59,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:58:59,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 11:58:59,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 11:58:59,001 INFO L87 Difference]: Start difference. First operand 4636 states and 6461 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:58:59,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:58:59,552 INFO L93 Difference]: Finished difference Result 13426 states and 18670 transitions. [2021-12-22 11:58:59,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 11:58:59,553 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2021-12-22 11:58:59,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:58:59,578 INFO L225 Difference]: With dead ends: 13426 [2021-12-22 11:58:59,578 INFO L226 Difference]: Without dead ends: 8891 [2021-12-22 11:58:59,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 11:58:59,587 INFO L933 BasicCegarLoop]: 915 mSDtfsCounter, 1051 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 1406 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 11:58:59,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1051 Valid, 1406 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 11:58:59,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8891 states. [2021-12-22 11:59:00,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8891 to 8864. [2021-12-22 11:59:00,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8864 states, 8859 states have (on average 1.379275313240772) internal successors, (12219), 8863 states have internal predecessors, (12219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:59:00,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8864 states to 8864 states and 12219 transitions. [2021-12-22 11:59:00,109 INFO L78 Accepts]: Start accepts. Automaton has 8864 states and 12219 transitions. Word has length 143 [2021-12-22 11:59:00,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:59:00,111 INFO L470 AbstractCegarLoop]: Abstraction has 8864 states and 12219 transitions. [2021-12-22 11:59:00,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:59:00,111 INFO L276 IsEmpty]: Start isEmpty. Operand 8864 states and 12219 transitions. [2021-12-22 11:59:00,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-22 11:59:00,121 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:59:00,121 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:59:00,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 11:59:00,122 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-22 11:59:00,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:59:00,123 INFO L85 PathProgramCache]: Analyzing trace with hash -845151558, now seen corresponding path program 1 times [2021-12-22 11:59:00,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:59:00,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309204510] [2021-12-22 11:59:00,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:59:00,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:59:00,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:59:00,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 11:59:00,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:59:00,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309204510] [2021-12-22 11:59:00,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309204510] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:59:00,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:59:00,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 11:59:00,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698181935] [2021-12-22 11:59:00,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:59:00,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 11:59:00,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:59:00,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 11:59:00,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 11:59:00,152 INFO L87 Difference]: Start difference. First operand 8864 states and 12219 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:59:01,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:59:01,144 INFO L93 Difference]: Finished difference Result 25440 states and 35201 transitions. [2021-12-22 11:59:01,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 11:59:01,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 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 144 [2021-12-22 11:59:01,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:59:01,171 INFO L225 Difference]: With dead ends: 25440 [2021-12-22 11:59:01,171 INFO L226 Difference]: Without dead ends: 17451 [2021-12-22 11:59:01,184 INFO L932 BasicCegarLoop]: 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 [2021-12-22 11:59:01,185 INFO L933 BasicCegarLoop]: 615 mSDtfsCounter, 498 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 11:59:01,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [498 Valid, 1143 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 11:59:01,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17451 states. [2021-12-22 11:59:01,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17451 to 8884. [2021-12-22 11:59:01,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8884 states, 8879 states have (on average 1.3784209933551075) internal successors, (12239), 8883 states have internal predecessors, (12239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:59:01,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8884 states to 8884 states and 12239 transitions. [2021-12-22 11:59:01,777 INFO L78 Accepts]: Start accepts. Automaton has 8884 states and 12239 transitions. Word has length 144 [2021-12-22 11:59:01,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:59:01,777 INFO L470 AbstractCegarLoop]: Abstraction has 8884 states and 12239 transitions. [2021-12-22 11:59:01,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:59:01,778 INFO L276 IsEmpty]: Start isEmpty. Operand 8884 states and 12239 transitions. [2021-12-22 11:59:01,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-22 11:59:01,785 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:59:01,786 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:59:01,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 11:59:01,786 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-22 11:59:01,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:59:01,787 INFO L85 PathProgramCache]: Analyzing trace with hash -319371603, now seen corresponding path program 1 times [2021-12-22 11:59:01,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:59:01,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560713280] [2021-12-22 11:59:01,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:59:01,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:59:01,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:59:01,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 11:59:01,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:59:01,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560713280] [2021-12-22 11:59:01,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560713280] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:59:01,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:59:01,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 11:59:01,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054809807] [2021-12-22 11:59:01,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:59:01,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 11:59:01,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:59:01,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 11:59:01,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 11:59:01,854 INFO L87 Difference]: Start difference. First operand 8884 states and 12239 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:59:02,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:59:02,192 INFO L93 Difference]: Finished difference Result 14105 states and 19475 transitions. [2021-12-22 11:59:02,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 11:59:02,192 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2021-12-22 11:59:02,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:59:02,201 INFO L225 Difference]: With dead ends: 14105 [2021-12-22 11:59:02,202 INFO L226 Difference]: Without dead ends: 5741 [2021-12-22 11:59:02,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 11:59:02,214 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 65 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 11:59:02,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 1642 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 11:59:02,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5741 states. [2021-12-22 11:59:02,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5741 to 5741. [2021-12-22 11:59:02,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5741 states, 5736 states have (on average 1.3718619246861925) internal successors, (7869), 5740 states have internal predecessors, (7869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:59:02,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5741 states to 5741 states and 7869 transitions. [2021-12-22 11:59:02,563 INFO L78 Accepts]: Start accepts. Automaton has 5741 states and 7869 transitions. Word has length 145 [2021-12-22 11:59:02,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:59:02,563 INFO L470 AbstractCegarLoop]: Abstraction has 5741 states and 7869 transitions. [2021-12-22 11:59:02,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:59:02,563 INFO L276 IsEmpty]: Start isEmpty. Operand 5741 states and 7869 transitions. [2021-12-22 11:59:02,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-22 11:59:02,568 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:59:02,569 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:59:02,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 11:59:02,569 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-22 11:59:02,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:59:02,570 INFO L85 PathProgramCache]: Analyzing trace with hash -14967049, now seen corresponding path program 1 times [2021-12-22 11:59:02,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:59:02,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149509485] [2021-12-22 11:59:02,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:59:02,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:59:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:59:02,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 11:59:02,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:59:02,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149509485] [2021-12-22 11:59:02,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149509485] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:59:02,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:59:02,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 11:59:02,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617589157] [2021-12-22 11:59:02,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:59:02,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 11:59:02,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:59:02,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 11:59:02,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 11:59:02,603 INFO L87 Difference]: Start difference. First operand 5741 states and 7869 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:59:03,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:59:03,338 INFO L93 Difference]: Finished difference Result 15336 states and 21177 transitions. [2021-12-22 11:59:03,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 11:59:03,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2021-12-22 11:59:03,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:59:03,354 INFO L225 Difference]: With dead ends: 15336 [2021-12-22 11:59:03,354 INFO L226 Difference]: Without dead ends: 10681 [2021-12-22 11:59:03,361 INFO L932 BasicCegarLoop]: 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 [2021-12-22 11:59:03,362 INFO L933 BasicCegarLoop]: 1004 mSDtfsCounter, 449 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 11:59:03,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [449 Valid, 1486 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 11:59:03,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10681 states. [2021-12-22 11:59:04,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10681 to 10661. [2021-12-22 11:59:04,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10661 states, 10656 states have (on average 1.3578265765765767) internal successors, (14469), 10660 states have internal predecessors, (14469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:59:04,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10661 states to 10661 states and 14469 transitions. [2021-12-22 11:59:04,197 INFO L78 Accepts]: Start accepts. Automaton has 10661 states and 14469 transitions. Word has length 153 [2021-12-22 11:59:04,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:59:04,197 INFO L470 AbstractCegarLoop]: Abstraction has 10661 states and 14469 transitions. [2021-12-22 11:59:04,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:59:04,197 INFO L276 IsEmpty]: Start isEmpty. Operand 10661 states and 14469 transitions. [2021-12-22 11:59:04,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-22 11:59:04,207 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:59:04,208 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:59:04,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 11:59:04,208 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-22 11:59:04,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:59:04,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1413245894, now seen corresponding path program 1 times [2021-12-22 11:59:04,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:59:04,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531339567] [2021-12-22 11:59:04,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:59:04,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:59:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:59:04,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 11:59:04,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:59:04,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531339567] [2021-12-22 11:59:04,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531339567] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:59:04,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:59:04,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 11:59:04,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870615094] [2021-12-22 11:59:04,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:59:04,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 11:59:04,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:59:04,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 11:59:04,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 11:59:04,262 INFO L87 Difference]: Start difference. First operand 10661 states and 14469 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:59:05,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:59:05,627 INFO L93 Difference]: Finished difference Result 28545 states and 39231 transitions. [2021-12-22 11:59:05,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 11:59:05,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2021-12-22 11:59:05,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:59:05,656 INFO L225 Difference]: With dead ends: 28545 [2021-12-22 11:59:05,657 INFO L226 Difference]: Without dead ends: 20276 [2021-12-22 11:59:05,667 INFO L932 BasicCegarLoop]: 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 [2021-12-22 11:59:05,668 INFO L933 BasicCegarLoop]: 423 mSDtfsCounter, 392 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 11:59:05,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [392 Valid, 827 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 11:59:05,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20276 states. [2021-12-22 11:59:06,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20276 to 20243. [2021-12-22 11:59:06,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20243 states, 20238 states have (on average 1.3573969759857694) internal successors, (27471), 20242 states have internal predecessors, (27471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:59:06,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20243 states to 20243 states and 27471 transitions. [2021-12-22 11:59:06,949 INFO L78 Accepts]: Start accepts. Automaton has 20243 states and 27471 transitions. Word has length 153 [2021-12-22 11:59:06,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:59:06,951 INFO L470 AbstractCegarLoop]: Abstraction has 20243 states and 27471 transitions. [2021-12-22 11:59:06,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:59:06,951 INFO L276 IsEmpty]: Start isEmpty. Operand 20243 states and 27471 transitions. [2021-12-22 11:59:06,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-22 11:59:06,966 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:59:06,966 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:59:06,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 11:59:06,967 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-22 11:59:06,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:59:06,967 INFO L85 PathProgramCache]: Analyzing trace with hash 424086943, now seen corresponding path program 1 times [2021-12-22 11:59:06,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:59:06,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24945481] [2021-12-22 11:59:06,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:59:06,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:59:06,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:59:07,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 11:59:07,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:59:07,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24945481] [2021-12-22 11:59:07,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24945481] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:59:07,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:59:07,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 11:59:07,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642816968] [2021-12-22 11:59:07,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:59:07,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 11:59:07,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:59:07,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 11:59:07,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 11:59:07,042 INFO L87 Difference]: Start difference. First operand 20243 states and 27471 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:59:09,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:59:09,541 INFO L93 Difference]: Finished difference Result 38202 states and 53840 transitions. [2021-12-22 11:59:09,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 11:59:09,541 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2021-12-22 11:59:09,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:59:09,585 INFO L225 Difference]: With dead ends: 38202 [2021-12-22 11:59:09,586 INFO L226 Difference]: Without dead ends: 31621 [2021-12-22 11:59:09,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 11:59:09,598 INFO L933 BasicCegarLoop]: 497 mSDtfsCounter, 672 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 11:59:09,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [672 Valid, 971 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 11:59:09,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31621 states. [2021-12-22 11:59:11,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31621 to 31619. [2021-12-22 11:59:11,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31619 states, 31614 states have (on average 1.3705004112102233) internal successors, (43327), 31618 states have internal predecessors, (43327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:59:11,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31619 states to 31619 states and 43327 transitions. [2021-12-22 11:59:11,924 INFO L78 Accepts]: Start accepts. Automaton has 31619 states and 43327 transitions. Word has length 153 [2021-12-22 11:59:11,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:59:11,924 INFO L470 AbstractCegarLoop]: Abstraction has 31619 states and 43327 transitions. [2021-12-22 11:59:11,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:59:11,924 INFO L276 IsEmpty]: Start isEmpty. Operand 31619 states and 43327 transitions. [2021-12-22 11:59:11,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-22 11:59:11,952 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:59:11,952 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:59:11,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-22 11:59:11,953 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-22 11:59:11,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:59:11,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1804095396, now seen corresponding path program 1 times [2021-12-22 11:59:11,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:59:11,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221013291] [2021-12-22 11:59:11,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:59:11,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:59:11,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:59:12,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 11:59:12,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:59:12,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221013291] [2021-12-22 11:59:12,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221013291] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:59:12,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:59:12,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 11:59:12,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635739241] [2021-12-22 11:59:12,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:59:12,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 11:59:12,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:59:12,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 11:59:12,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 11:59:12,011 INFO L87 Difference]: Start difference. First operand 31619 states and 43327 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:59:15,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:59:15,737 INFO L93 Difference]: Finished difference Result 58386 states and 83248 transitions. [2021-12-22 11:59:15,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 11:59:15,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2021-12-22 11:59:15,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:59:15,804 INFO L225 Difference]: With dead ends: 58386 [2021-12-22 11:59:15,805 INFO L226 Difference]: Without dead ends: 45677 [2021-12-22 11:59:15,830 INFO L932 BasicCegarLoop]: 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 [2021-12-22 11:59:15,831 INFO L933 BasicCegarLoop]: 502 mSDtfsCounter, 306 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 11:59:15,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 839 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 11:59:15,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45677 states. [2021-12-22 11:59:19,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45677 to 45675. [2021-12-22 11:59:19,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45675 states, 45670 states have (on average 1.38119115393037) internal successors, (63079), 45674 states have internal predecessors, (63079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:59:19,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45675 states to 45675 states and 63079 transitions. [2021-12-22 11:59:19,716 INFO L78 Accepts]: Start accepts. Automaton has 45675 states and 63079 transitions. Word has length 153 [2021-12-22 11:59:19,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:59:19,717 INFO L470 AbstractCegarLoop]: Abstraction has 45675 states and 63079 transitions. [2021-12-22 11:59:19,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:59:19,717 INFO L276 IsEmpty]: Start isEmpty. Operand 45675 states and 63079 transitions. [2021-12-22 11:59:19,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-22 11:59:19,744 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:59:19,744 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:59:19,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-22 11:59:19,745 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-22 11:59:19,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:59:19,745 INFO L85 PathProgramCache]: Analyzing trace with hash -345875771, now seen corresponding path program 1 times [2021-12-22 11:59:19,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:59:19,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583343324] [2021-12-22 11:59:19,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:59:19,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:59:19,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:59:19,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 11:59:19,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:59:19,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583343324] [2021-12-22 11:59:19,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583343324] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:59:19,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:59:19,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 11:59:19,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724041751] [2021-12-22 11:59:19,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:59:19,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 11:59:19,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:59:19,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 11:59:19,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 11:59:19,810 INFO L87 Difference]: Start difference. First operand 45675 states and 63079 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:59:22,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:59:22,657 INFO L93 Difference]: Finished difference Result 72831 states and 100555 transitions. [2021-12-22 11:59:22,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 11:59:22,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2021-12-22 11:59:22,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:59:22,714 INFO L225 Difference]: With dead ends: 72831 [2021-12-22 11:59:22,715 INFO L226 Difference]: Without dead ends: 37198 [2021-12-22 11:59:22,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 11:59:22,751 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 53 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 11:59:22,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 1631 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 11:59:22,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37198 states. [2021-12-22 11:59:26,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37198 to 37198. [2021-12-22 11:59:26,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37198 states, 37193 states have (on average 1.3766300110235796) internal successors, (51201), 37197 states have internal predecessors, (51201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:59:26,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37198 states to 37198 states and 51201 transitions. [2021-12-22 11:59:26,495 INFO L78 Accepts]: Start accepts. Automaton has 37198 states and 51201 transitions. Word has length 153 [2021-12-22 11:59:26,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:59:26,495 INFO L470 AbstractCegarLoop]: Abstraction has 37198 states and 51201 transitions. [2021-12-22 11:59:26,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:59:26,496 INFO L276 IsEmpty]: Start isEmpty. Operand 37198 states and 51201 transitions. [2021-12-22 11:59:26,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-12-22 11:59:26,519 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:59:26,520 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:59:26,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-22 11:59:26,520 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-22 11:59:26,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:59:26,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1760858661, now seen corresponding path program 1 times [2021-12-22 11:59:26,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:59:26,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282935636] [2021-12-22 11:59:26,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:59:26,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:59:26,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:59:26,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 11:59:26,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:59:26,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282935636] [2021-12-22 11:59:26,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282935636] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:59:26,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:59:26,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 11:59:26,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051862399] [2021-12-22 11:59:26,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:59:26,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 11:59:26,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:59:26,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 11:59:26,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-22 11:59:26,636 INFO L87 Difference]: Start difference. First operand 37198 states and 51201 transitions. Second operand has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:59:31,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:59:31,333 INFO L93 Difference]: Finished difference Result 75651 states and 106363 transitions. [2021-12-22 11:59:31,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 11:59:31,334 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 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 159 [2021-12-22 11:59:31,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:59:31,434 INFO L225 Difference]: With dead ends: 75651 [2021-12-22 11:59:31,434 INFO L226 Difference]: Without dead ends: 60149 [2021-12-22 11:59:31,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-12-22 11:59:31,464 INFO L933 BasicCegarLoop]: 605 mSDtfsCounter, 1695 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1695 SdHoareTripleChecker+Valid, 1245 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 11:59:31,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1695 Valid, 1245 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 11:59:31,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60149 states. [2021-12-22 11:59:36,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60149 to 60147. [2021-12-22 11:59:36,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60147 states, 60142 states have (on average 1.3571713611120348) internal successors, (81623), 60146 states have internal predecessors, (81623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:59:36,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60147 states to 60147 states and 81623 transitions. [2021-12-22 11:59:36,653 INFO L78 Accepts]: Start accepts. Automaton has 60147 states and 81623 transitions. Word has length 159 [2021-12-22 11:59:36,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:59:36,653 INFO L470 AbstractCegarLoop]: Abstraction has 60147 states and 81623 transitions. [2021-12-22 11:59:36,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:59:36,653 INFO L276 IsEmpty]: Start isEmpty. Operand 60147 states and 81623 transitions. [2021-12-22 11:59:36,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-12-22 11:59:36,701 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:59:36,702 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:59:36,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-22 11:59:36,702 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-22 11:59:36,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:59:36,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1384607787, now seen corresponding path program 1 times [2021-12-22 11:59:36,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:59:36,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724059111] [2021-12-22 11:59:36,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:59:36,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:59:36,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:59:36,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 11:59:36,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:59:36,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724059111] [2021-12-22 11:59:36,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724059111] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:59:36,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:59:36,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 11:59:36,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86357096] [2021-12-22 11:59:36,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:59:36,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 11:59:36,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:59:36,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 11:59:36,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 11:59:36,773 INFO L87 Difference]: Start difference. First operand 60147 states and 81623 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:59:41,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:59:41,320 INFO L93 Difference]: Finished difference Result 111555 states and 151448 transitions. [2021-12-22 11:59:41,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 11:59:41,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 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 159 [2021-12-22 11:59:41,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:59:41,407 INFO L225 Difference]: With dead ends: 111555 [2021-12-22 11:59:41,407 INFO L226 Difference]: Without dead ends: 51466 [2021-12-22 11:59:41,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 11:59:41,454 INFO L933 BasicCegarLoop]: 563 mSDtfsCounter, 45 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 1618 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 11:59:41,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 1618 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 11:59:41,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51466 states. [2021-12-22 11:59:45,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51466 to 51466. [2021-12-22 11:59:46,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51466 states, 51461 states have (on average 1.3582713122558832) internal successors, (69898), 51465 states have internal predecessors, (69898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:59:46,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51466 states to 51466 states and 69898 transitions. [2021-12-22 11:59:46,090 INFO L78 Accepts]: Start accepts. Automaton has 51466 states and 69898 transitions. Word has length 159 [2021-12-22 11:59:46,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:59:46,091 INFO L470 AbstractCegarLoop]: Abstraction has 51466 states and 69898 transitions. [2021-12-22 11:59:46,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:59:46,091 INFO L276 IsEmpty]: Start isEmpty. Operand 51466 states and 69898 transitions. [2021-12-22 11:59:46,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-12-22 11:59:46,132 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:59:46,132 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:59:46,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-22 11:59:46,132 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-12-22 11:59:46,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:59:46,133 INFO L85 PathProgramCache]: Analyzing trace with hash 388359894, now seen corresponding path program 1 times [2021-12-22 11:59:46,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:59:46,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167765104] [2021-12-22 11:59:46,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:59:46,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:59:46,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:59:46,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 11:59:46,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:59:46,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167765104] [2021-12-22 11:59:46,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167765104] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:59:46,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:59:46,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-22 11:59:46,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291454702] [2021-12-22 11:59:46,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:59:46,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-22 11:59:46,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:59:46,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-22 11:59:46,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-22 11:59:46,402 INFO L87 Difference]: Start difference. First operand 51466 states and 69898 transitions. Second operand has 16 states, 16 states have (on average 10.3125) internal successors, (165), 16 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 11:59:57,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:59:57,856 INFO L93 Difference]: Finished difference Result 107079 states and 151009 transitions. [2021-12-22 11:59:57,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-22 11:59:57,857 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.3125) internal successors, (165), 16 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2021-12-22 11:59:57,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:59:57,998 INFO L225 Difference]: With dead ends: 107079 [2021-12-22 11:59:57,998 INFO L226 Difference]: Without dead ends: 95463 [2021-12-22 11:59:58,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=443, Invalid=1197, Unknown=0, NotChecked=0, Total=1640 [2021-12-22 11:59:58,036 INFO L933 BasicCegarLoop]: 539 mSDtfsCounter, 8057 mSDsluCounter, 6050 mSDsCounter, 0 mSdLazyCounter, 1407 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8057 SdHoareTripleChecker+Valid, 6589 SdHoareTripleChecker+Invalid, 1652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 1407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-22 11:59:58,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8057 Valid, 6589 Invalid, 1652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 1407 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-22 11:59:58,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95463 states.