./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fbc1afdc0c527a20ea946075190a27bee4243d56a1bede1487b2df57b3410a93 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 13:47:04,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 13:47:04,789 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 13:47:04,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 13:47:04,835 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 13:47:04,836 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 13:47:04,837 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 13:47:04,838 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 13:47:04,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 13:47:04,851 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 13:47:04,852 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 13:47:04,853 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 13:47:04,853 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 13:47:04,854 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 13:47:04,855 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 13:47:04,859 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 13:47:04,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 13:47:04,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 13:47:04,865 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 13:47:04,869 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 13:47:04,871 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 13:47:04,874 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 13:47:04,875 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 13:47:04,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 13:47:04,879 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 13:47:04,881 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 13:47:04,882 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 13:47:04,882 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 13:47:04,883 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 13:47:04,884 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 13:47:04,884 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 13:47:04,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 13:47:04,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 13:47:04,886 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 13:47:04,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 13:47:04,888 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 13:47:04,888 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 13:47:04,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 13:47:04,889 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 13:47:04,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 13:47:04,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 13:47:04,891 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 13:47:04,915 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 13:47:04,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 13:47:04,918 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 13:47:04,918 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 13:47:04,919 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 13:47:04,919 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 13:47:04,919 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 13:47:04,919 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 13:47:04,920 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 13:47:04,920 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 13:47:04,920 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 13:47:04,921 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 13:47:04,921 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 13:47:04,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 13:47:04,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 13:47:04,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 13:47:04,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 13:47:04,921 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 13:47:04,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 13:47:04,922 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 13:47:04,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 13:47:04,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 13:47:04,922 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 13:47:04,922 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 13:47:04,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:47:04,923 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 13:47:04,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 13:47:04,923 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 13:47:04,923 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 13:47:04,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 13:47:04,924 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 13:47:04,924 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 13:47:04,924 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 13:47:04,924 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 13:47:04,924 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fbc1afdc0c527a20ea946075190a27bee4243d56a1bede1487b2df57b3410a93 [2021-12-21 13:47:05,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 13:47:05,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 13:47:05,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 13:47:05,157 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 13:47:05,158 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 13:47:05,159 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2021-12-21 13:47:05,210 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e17679140/92c335a8b25f4bd4b49b841c39f8bb08/FLAG32d9563cb [2021-12-21 13:47:05,597 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 13:47:05,600 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2021-12-21 13:47:05,611 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e17679140/92c335a8b25f4bd4b49b841c39f8bb08/FLAG32d9563cb [2021-12-21 13:47:05,951 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e17679140/92c335a8b25f4bd4b49b841c39f8bb08 [2021-12-21 13:47:05,955 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 13:47:05,957 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 13:47:05,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 13:47:05,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 13:47:05,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 13:47:05,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:47:05" (1/1) ... [2021-12-21 13:47:05,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1df0bb51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:47:05, skipping insertion in model container [2021-12-21 13:47:05,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:47:05" (1/1) ... [2021-12-21 13:47:05,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 13:47:06,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 13:47:06,288 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c[10019,10032] [2021-12-21 13:47:06,363 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:47:06,379 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 13:47:06,455 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c[10019,10032] [2021-12-21 13:47:06,491 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:47:06,502 INFO L208 MainTranslator]: Completed translation [2021-12-21 13:47:06,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:47:06 WrapperNode [2021-12-21 13:47:06,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 13:47:06,504 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 13:47:06,505 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 13:47:06,505 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 13:47:06,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:47:06" (1/1) ... [2021-12-21 13:47:06,527 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:47:06" (1/1) ... [2021-12-21 13:47:06,556 INFO L137 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 957 [2021-12-21 13:47:06,566 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 13:47:06,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 13:47:06,567 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 13:47:06,567 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 13:47:06,573 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:47:06" (1/1) ... [2021-12-21 13:47:06,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:47:06" (1/1) ... [2021-12-21 13:47:06,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:47:06" (1/1) ... [2021-12-21 13:47:06,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:47:06" (1/1) ... [2021-12-21 13:47:06,604 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:47:06" (1/1) ... [2021-12-21 13:47:06,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:47:06" (1/1) ... [2021-12-21 13:47:06,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:47:06" (1/1) ... [2021-12-21 13:47:06,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 13:47:06,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 13:47:06,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 13:47:06,635 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 13:47:06,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:47:06" (1/1) ... [2021-12-21 13:47:06,641 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:47:06,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:47:06,660 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) [2021-12-21 13:47:06,666 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 [2021-12-21 13:47:06,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 13:47:06,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 13:47:06,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 13:47:06,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 13:47:06,761 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 13:47:06,762 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 13:47:07,346 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 13:47:07,359 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 13:47:07,359 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 13:47:07,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:47:07 BoogieIcfgContainer [2021-12-21 13:47:07,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 13:47:07,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 13:47:07,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 13:47:07,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 13:47:07,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:47:05" (1/3) ... [2021-12-21 13:47:07,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ecf24b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:47:07, skipping insertion in model container [2021-12-21 13:47:07,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:47:06" (2/3) ... [2021-12-21 13:47:07,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ecf24b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:47:07, skipping insertion in model container [2021-12-21 13:47:07,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:47:07" (3/3) ... [2021-12-21 13:47:07,370 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2021-12-21 13:47:07,373 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 13:47:07,374 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 13:47:07,418 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 13:47:07,424 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 [2021-12-21 13:47:07,424 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 13:47:07,444 INFO L276 IsEmpty]: Start isEmpty. Operand has 259 states, 257 states have (on average 1.7237354085603114) internal successors, (443), 258 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:47:07,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-21 13:47:07,460 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:47:07,461 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] [2021-12-21 13:47:07,462 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:47:07,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:47:07,466 INFO L85 PathProgramCache]: Analyzing trace with hash 891906329, now seen corresponding path program 1 times [2021-12-21 13:47:07,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:47:07,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912314720] [2021-12-21 13:47:07,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:47:07,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:47:07,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:47:07,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:47:07,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:47:07,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912314720] [2021-12-21 13:47:07,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912314720] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:47:07,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:47:07,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 13:47:07,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586872116] [2021-12-21 13:47:07,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:47:07,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 13:47:07,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:47:07,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 13:47:07,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 13:47:07,892 INFO L87 Difference]: Start difference. First operand has 259 states, 257 states have (on average 1.7237354085603114) internal successors, (443), 258 states have internal predecessors, (443), 0 states have call successors, (0), 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 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:47:08,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:47:08,212 INFO L93 Difference]: Finished difference Result 1164 states and 1888 transitions. [2021-12-21 13:47:08,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 13:47:08,214 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2021-12-21 13:47:08,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:47:08,232 INFO L225 Difference]: With dead ends: 1164 [2021-12-21 13:47:08,232 INFO L226 Difference]: Without dead ends: 1023 [2021-12-21 13:47:08,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:47:08,242 INFO L933 BasicCegarLoop]: 450 mSDtfsCounter, 3889 mSDsluCounter, 3535 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3889 SdHoareTripleChecker+Valid, 3985 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 13:47:08,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3889 Valid, 3985 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 13:47:08,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2021-12-21 13:47:08,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 396. [2021-12-21 13:47:08,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 1.5012658227848101) internal successors, (593), 395 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:47:08,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 593 transitions. [2021-12-21 13:47:08,323 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 593 transitions. Word has length 97 [2021-12-21 13:47:08,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:47:08,324 INFO L470 AbstractCegarLoop]: Abstraction has 396 states and 593 transitions. [2021-12-21 13:47:08,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:47:08,324 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 593 transitions. [2021-12-21 13:47:08,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-21 13:47:08,331 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:47:08,331 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] [2021-12-21 13:47:08,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 13:47:08,332 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:47:08,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:47:08,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1536603989, now seen corresponding path program 1 times [2021-12-21 13:47:08,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:47:08,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44961906] [2021-12-21 13:47:08,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:47:08,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:47:08,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:47:08,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:47:08,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:47:08,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44961906] [2021-12-21 13:47:08,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44961906] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:47:08,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:47:08,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 13:47:08,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459617381] [2021-12-21 13:47:08,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:47:08,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 13:47:08,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:47:08,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 13:47:08,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-12-21 13:47:08,585 INFO L87 Difference]: Start difference. First operand 396 states and 593 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:47:08,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:47:08,947 INFO L93 Difference]: Finished difference Result 1973 states and 3057 transitions. [2021-12-21 13:47:08,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 13:47:08,947 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2021-12-21 13:47:08,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:47:08,953 INFO L225 Difference]: With dead ends: 1973 [2021-12-21 13:47:08,953 INFO L226 Difference]: Without dead ends: 1677 [2021-12-21 13:47:08,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-12-21 13:47:08,955 INFO L933 BasicCegarLoop]: 755 mSDtfsCounter, 2742 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2742 SdHoareTripleChecker+Valid, 2104 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 13:47:08,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2742 Valid, 2104 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 13:47:08,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1677 states. [2021-12-21 13:47:09,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1677 to 1667. [2021-12-21 13:47:09,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1666 states have (on average 1.546218487394958) internal successors, (2576), 1666 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:47:09,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 2576 transitions. [2021-12-21 13:47:09,088 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 2576 transitions. Word has length 98 [2021-12-21 13:47:09,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:47:09,088 INFO L470 AbstractCegarLoop]: Abstraction has 1667 states and 2576 transitions. [2021-12-21 13:47:09,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:47:09,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 2576 transitions. [2021-12-21 13:47:09,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-21 13:47:09,090 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:47:09,090 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] [2021-12-21 13:47:09,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 13:47:09,091 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:47:09,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:47:09,091 INFO L85 PathProgramCache]: Analyzing trace with hash 520748387, now seen corresponding path program 1 times [2021-12-21 13:47:09,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:47:09,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279923976] [2021-12-21 13:47:09,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:47:09,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:47:09,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:47:09,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:47:09,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:47:09,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279923976] [2021-12-21 13:47:09,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279923976] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:47:09,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:47:09,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 13:47:09,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491888760] [2021-12-21 13:47:09,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:47:09,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:47:09,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:47:09,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:47:09,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 13:47:09,162 INFO L87 Difference]: Start difference. First operand 1667 states and 2576 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:47:09,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:47:09,591 INFO L93 Difference]: Finished difference Result 4413 states and 6892 transitions. [2021-12-21 13:47:09,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 13:47:09,592 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2021-12-21 13:47:09,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:47:09,600 INFO L225 Difference]: With dead ends: 4413 [2021-12-21 13:47:09,600 INFO L226 Difference]: Without dead ends: 2867 [2021-12-21 13:47:09,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:47:09,603 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 1388 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1388 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 13:47:09,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1388 Valid, 357 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 13:47:09,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2867 states. [2021-12-21 13:47:09,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2867 to 2865. [2021-12-21 13:47:09,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2865 states, 2864 states have (on average 1.5534217877094971) internal successors, (4449), 2864 states have internal predecessors, (4449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:47:09,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2865 states to 2865 states and 4449 transitions. [2021-12-21 13:47:09,841 INFO L78 Accepts]: Start accepts. Automaton has 2865 states and 4449 transitions. Word has length 99 [2021-12-21 13:47:09,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:47:09,842 INFO L470 AbstractCegarLoop]: Abstraction has 2865 states and 4449 transitions. [2021-12-21 13:47:09,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:47:09,842 INFO L276 IsEmpty]: Start isEmpty. Operand 2865 states and 4449 transitions. [2021-12-21 13:47:09,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-21 13:47:09,844 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:47:09,844 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] [2021-12-21 13:47:09,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 13:47:09,844 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:47:09,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:47:09,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1043155442, now seen corresponding path program 1 times [2021-12-21 13:47:09,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:47:09,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625063443] [2021-12-21 13:47:09,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:47:09,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:47:09,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:47:09,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:47:09,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:47:09,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625063443] [2021-12-21 13:47:09,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625063443] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:47:09,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:47:09,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 13:47:09,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424224072] [2021-12-21 13:47:09,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:47:09,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:47:09,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:47:09,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:47:09,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 13:47:09,901 INFO L87 Difference]: Start difference. First operand 2865 states and 4449 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:47:10,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:47:10,474 INFO L93 Difference]: Finished difference Result 7872 states and 12314 transitions. [2021-12-21 13:47:10,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 13:47:10,475 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2021-12-21 13:47:10,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:47:10,493 INFO L225 Difference]: With dead ends: 7872 [2021-12-21 13:47:10,493 INFO L226 Difference]: Without dead ends: 5165 [2021-12-21 13:47:10,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:47:10,507 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 1346 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1346 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 13:47:10,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1346 Valid, 361 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 13:47:10,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5165 states. [2021-12-21 13:47:10,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5165 to 5163. [2021-12-21 13:47:10,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5163 states, 5162 states have (on average 1.5561797752808988) internal successors, (8033), 5162 states have internal predecessors, (8033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:47:10,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5163 states to 5163 states and 8033 transitions. [2021-12-21 13:47:10,968 INFO L78 Accepts]: Start accepts. Automaton has 5163 states and 8033 transitions. Word has length 99 [2021-12-21 13:47:10,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:47:10,968 INFO L470 AbstractCegarLoop]: Abstraction has 5163 states and 8033 transitions. [2021-12-21 13:47:10,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:47:10,969 INFO L276 IsEmpty]: Start isEmpty. Operand 5163 states and 8033 transitions. [2021-12-21 13:47:10,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-21 13:47:10,971 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:47:10,972 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] [2021-12-21 13:47:10,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 13:47:10,972 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:47:10,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:47:10,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1397069631, now seen corresponding path program 1 times [2021-12-21 13:47:10,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:47:10,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224072866] [2021-12-21 13:47:10,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:47:10,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:47:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:47:11,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:47:11,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:47:11,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224072866] [2021-12-21 13:47:11,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224072866] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:47:11,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:47:11,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 13:47:11,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951893335] [2021-12-21 13:47:11,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:47:11,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:47:11,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:47:11,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:47:11,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 13:47:11,025 INFO L87 Difference]: Start difference. First operand 5163 states and 8033 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:47:11,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:47:11,915 INFO L93 Difference]: Finished difference Result 14689 states and 22985 transitions. [2021-12-21 13:47:11,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 13:47:11,916 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2021-12-21 13:47:11,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:47:11,946 INFO L225 Difference]: With dead ends: 14689 [2021-12-21 13:47:11,946 INFO L226 Difference]: Without dead ends: 9725 [2021-12-21 13:47:11,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:47:11,955 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 1334 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1334 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 13:47:11,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1334 Valid, 370 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 13:47:11,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9725 states. [2021-12-21 13:47:12,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9725 to 9723. [2021-12-21 13:47:12,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9723 states, 9722 states have (on average 1.5584241925529727) internal successors, (15151), 9722 states have internal predecessors, (15151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:47:12,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9723 states to 9723 states and 15151 transitions. [2021-12-21 13:47:12,698 INFO L78 Accepts]: Start accepts. Automaton has 9723 states and 15151 transitions. Word has length 99 [2021-12-21 13:47:12,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:47:12,698 INFO L470 AbstractCegarLoop]: Abstraction has 9723 states and 15151 transitions. [2021-12-21 13:47:12,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:47:12,699 INFO L276 IsEmpty]: Start isEmpty. Operand 9723 states and 15151 transitions. [2021-12-21 13:47:12,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-21 13:47:12,701 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:47:12,701 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] [2021-12-21 13:47:12,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 13:47:12,702 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:47:12,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:47:12,702 INFO L85 PathProgramCache]: Analyzing trace with hash 2146829076, now seen corresponding path program 1 times [2021-12-21 13:47:12,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:47:12,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932316128] [2021-12-21 13:47:12,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:47:12,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:47:12,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:47:12,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:47:12,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:47:12,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932316128] [2021-12-21 13:47:12,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932316128] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:47:12,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:47:12,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 13:47:12,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22346521] [2021-12-21 13:47:12,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:47:12,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:47:12,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:47:12,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:47:12,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 13:47:12,779 INFO L87 Difference]: Start difference. First operand 9723 states and 15151 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:47:14,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:47:14,407 INFO L93 Difference]: Finished difference Result 28649 states and 44743 transitions. [2021-12-21 13:47:14,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 13:47:14,408 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2021-12-21 13:47:14,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:47:14,454 INFO L225 Difference]: With dead ends: 28649 [2021-12-21 13:47:14,454 INFO L226 Difference]: Without dead ends: 19017 [2021-12-21 13:47:14,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:47:14,468 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 1402 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1402 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 13:47:14,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1402 Valid, 355 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 13:47:14,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19017 states. [2021-12-21 13:47:15,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19017 to 19015. [2021-12-21 13:47:15,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19015 states, 19014 states have (on average 1.554380982433996) internal successors, (29555), 19014 states have internal predecessors, (29555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:47:15,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19015 states to 19015 states and 29555 transitions. [2021-12-21 13:47:15,816 INFO L78 Accepts]: Start accepts. Automaton has 19015 states and 29555 transitions. Word has length 99 [2021-12-21 13:47:15,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:47:15,817 INFO L470 AbstractCegarLoop]: Abstraction has 19015 states and 29555 transitions. [2021-12-21 13:47:15,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:47:15,817 INFO L276 IsEmpty]: Start isEmpty. Operand 19015 states and 29555 transitions. [2021-12-21 13:47:15,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-21 13:47:15,821 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:47:15,821 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] [2021-12-21 13:47:15,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 13:47:15,821 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:47:15,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:47:15,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1517888763, now seen corresponding path program 1 times [2021-12-21 13:47:15,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:47:15,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093361519] [2021-12-21 13:47:15,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:47:15,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:47:15,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:47:15,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:47:15,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:47:15,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093361519] [2021-12-21 13:47:15,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093361519] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:47:15,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:47:15,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 13:47:15,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274501297] [2021-12-21 13:47:15,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:47:15,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:47:15,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:47:15,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:47:15,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 13:47:15,864 INFO L87 Difference]: Start difference. First operand 19015 states and 29555 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:47:18,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:47:18,939 INFO L93 Difference]: Finished difference Result 56572 states and 88040 transitions. [2021-12-21 13:47:18,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 13:47:18,939 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2021-12-21 13:47:18,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:47:19,000 INFO L225 Difference]: With dead ends: 56572 [2021-12-21 13:47:19,000 INFO L226 Difference]: Without dead ends: 37625 [2021-12-21 13:47:19,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:47:19,033 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 1424 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1424 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 13:47:19,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1424 Valid, 355 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 13:47:19,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37625 states. [2021-12-21 13:47:21,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37625 to 37623. [2021-12-21 13:47:21,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37623 states, 37622 states have (on average 1.548030407740152) internal successors, (58240), 37622 states have internal predecessors, (58240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:47:21,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37623 states to 37623 states and 58240 transitions. [2021-12-21 13:47:21,835 INFO L78 Accepts]: Start accepts. Automaton has 37623 states and 58240 transitions. Word has length 99 [2021-12-21 13:47:21,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:47:21,836 INFO L470 AbstractCegarLoop]: Abstraction has 37623 states and 58240 transitions. [2021-12-21 13:47:21,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:47:21,837 INFO L276 IsEmpty]: Start isEmpty. Operand 37623 states and 58240 transitions. [2021-12-21 13:47:21,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-21 13:47:21,844 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:47:21,844 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] [2021-12-21 13:47:21,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 13:47:21,844 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:47:21,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:47:21,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1740503754, now seen corresponding path program 1 times [2021-12-21 13:47:21,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:47:21,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841355550] [2021-12-21 13:47:21,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:47:21,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:47:21,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:47:21,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:47:21,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:47:21,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841355550] [2021-12-21 13:47:21,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841355550] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:47:21,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:47:21,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 13:47:21,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021700519] [2021-12-21 13:47:21,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:47:21,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:47:21,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:47:21,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:47:21,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 13:47:21,885 INFO L87 Difference]: Start difference. First operand 37623 states and 58240 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:47:27,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:47:27,481 INFO L93 Difference]: Finished difference Result 107195 states and 166076 transitions. [2021-12-21 13:47:27,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 13:47:27,482 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2021-12-21 13:47:27,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:47:27,619 INFO L225 Difference]: With dead ends: 107195 [2021-12-21 13:47:27,619 INFO L226 Difference]: Without dead ends: 69624 [2021-12-21 13:47:27,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:47:27,670 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 1450 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1450 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 13:47:27,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1450 Valid, 353 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 13:47:27,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69624 states. [2021-12-21 13:47:33,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69624 to 69622. [2021-12-21 13:47:33,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69622 states, 69621 states have (on average 1.5395498484652619) internal successors, (107185), 69621 states have internal predecessors, (107185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:47:33,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69622 states to 69622 states and 107185 transitions. [2021-12-21 13:47:33,760 INFO L78 Accepts]: Start accepts. Automaton has 69622 states and 107185 transitions. Word has length 99 [2021-12-21 13:47:33,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:47:33,760 INFO L470 AbstractCegarLoop]: Abstraction has 69622 states and 107185 transitions. [2021-12-21 13:47:33,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:47:33,761 INFO L276 IsEmpty]: Start isEmpty. Operand 69622 states and 107185 transitions. [2021-12-21 13:47:33,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-21 13:47:33,771 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:47:33,771 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] [2021-12-21 13:47:33,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 13:47:33,772 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:47:33,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:47:33,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1377652457, now seen corresponding path program 1 times [2021-12-21 13:47:33,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:47:33,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522271627] [2021-12-21 13:47:33,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:47:33,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:47:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:47:34,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:47:34,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:47:34,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522271627] [2021-12-21 13:47:34,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522271627] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:47:34,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:47:34,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 13:47:34,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917230419] [2021-12-21 13:47:34,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:47:34,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:47:34,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:47:34,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:47:34,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 13:47:34,113 INFO L87 Difference]: Start difference. First operand 69622 states and 107185 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)