./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem17_label08.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bfef182-1684-4ba7-80b4-57b12434a970/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bfef182-1684-4ba7-80b4-57b12434a970/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bfef182-1684-4ba7-80b4-57b12434a970/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bfef182-1684-4ba7-80b4-57b12434a970/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem17_label08.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bfef182-1684-4ba7-80b4-57b12434a970/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bfef182-1684-4ba7-80b4-57b12434a970/bin/uautomizer-ZsLfNo2U6R --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 9e8eccafd5332366d591fd0f563128386bcd6073a7941113bfddd094bb357fdc --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 18:07:22,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:07:22,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:07:22,721 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:07:22,721 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:07:22,722 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:07:22,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:07:22,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:07:22,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:07:22,728 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:07:22,729 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:07:22,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:07:22,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:07:22,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:07:22,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:07:22,735 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:07:22,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:07:22,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:07:22,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:07:22,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:07:22,742 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:07:22,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:07:22,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:07:22,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:07:22,749 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:07:22,749 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:07:22,749 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:07:22,750 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:07:22,751 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:07:22,752 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:07:22,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:07:22,753 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:07:22,754 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:07:22,755 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:07:22,756 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:07:22,757 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:07:22,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:07:22,758 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:07:22,758 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:07:22,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:07:22,760 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:07:22,761 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bfef182-1684-4ba7-80b4-57b12434a970/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 18:07:22,783 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:07:22,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:07:22,784 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:07:22,785 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:07:22,785 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:07:22,786 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:07:22,786 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:07:22,787 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:07:22,787 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:07:22,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:07:22,787 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:07:22,788 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:07:22,788 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:07:22,788 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:07:22,788 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:07:22,789 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:07:22,789 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:07:22,789 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:07:22,789 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:07:22,789 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:07:22,790 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:07:22,790 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:07:22,790 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:07:22,790 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:07:22,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:07:22,791 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:07:22,791 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:07:22,791 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:07:22,792 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:07:22,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:07:22,792 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:07:22,792 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:07:22,793 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:07:22,793 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:07:22,793 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bfef182-1684-4ba7-80b4-57b12434a970/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bfef182-1684-4ba7-80b4-57b12434a970/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e8eccafd5332366d591fd0f563128386bcd6073a7941113bfddd094bb357fdc [2022-11-25 18:07:23,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:07:23,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:07:23,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:07:23,115 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:07:23,116 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:07:23,117 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bfef182-1684-4ba7-80b4-57b12434a970/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/eca-rers2012/Problem17_label08.c [2022-11-25 18:07:26,167 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:07:26,657 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:07:26,657 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bfef182-1684-4ba7-80b4-57b12434a970/sv-benchmarks/c/eca-rers2012/Problem17_label08.c [2022-11-25 18:07:26,679 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bfef182-1684-4ba7-80b4-57b12434a970/bin/uautomizer-ZsLfNo2U6R/data/7ea6be276/ed53837031a54037a69e7eb02b7ee8ac/FLAG708bade3e [2022-11-25 18:07:26,699 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bfef182-1684-4ba7-80b4-57b12434a970/bin/uautomizer-ZsLfNo2U6R/data/7ea6be276/ed53837031a54037a69e7eb02b7ee8ac [2022-11-25 18:07:26,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:07:26,705 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:07:26,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:07:26,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:07:26,711 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:07:26,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:07:26" (1/1) ... [2022-11-25 18:07:26,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ec1de2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:07:26, skipping insertion in model container [2022-11-25 18:07:26,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:07:26" (1/1) ... [2022-11-25 18:07:26,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:07:26,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:07:27,095 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bfef182-1684-4ba7-80b4-57b12434a970/sv-benchmarks/c/eca-rers2012/Problem17_label08.c[8572,8585] [2022-11-25 18:07:27,889 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:07:27,901 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:07:27,980 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bfef182-1684-4ba7-80b4-57b12434a970/sv-benchmarks/c/eca-rers2012/Problem17_label08.c[8572,8585] [2022-11-25 18:07:28,315 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:07:28,336 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:07:28,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:07:28 WrapperNode [2022-11-25 18:07:28,337 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:07:28,338 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:07:28,338 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:07:28,338 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:07:28,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:07:28" (1/1) ... [2022-11-25 18:07:28,416 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:07:28" (1/1) ... [2022-11-25 18:07:28,760 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2611 [2022-11-25 18:07:28,760 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:07:28,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:07:28,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:07:28,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:07:28,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:07:28" (1/1) ... [2022-11-25 18:07:28,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:07:28" (1/1) ... [2022-11-25 18:07:28,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:07:28" (1/1) ... [2022-11-25 18:07:28,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:07:28" (1/1) ... [2022-11-25 18:07:28,929 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:07:28" (1/1) ... [2022-11-25 18:07:28,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:07:28" (1/1) ... [2022-11-25 18:07:28,991 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:07:28" (1/1) ... [2022-11-25 18:07:29,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:07:28" (1/1) ... [2022-11-25 18:07:29,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:07:29,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:07:29,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:07:29,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:07:29,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:07:28" (1/1) ... [2022-11-25 18:07:29,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:07:29,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bfef182-1684-4ba7-80b4-57b12434a970/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:07:29,120 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bfef182-1684-4ba7-80b4-57b12434a970/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:07:29,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bfef182-1684-4ba7-80b4-57b12434a970/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:07:29,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:07:29,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:07:29,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:07:29,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:07:29,364 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:07:29,367 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:07:33,945 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:07:33,966 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:07:33,973 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 18:07:33,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:07:33 BoogieIcfgContainer [2022-11-25 18:07:33,978 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:07:33,981 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:07:33,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:07:33,985 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:07:33,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:07:26" (1/3) ... [2022-11-25 18:07:33,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59589f1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:07:33, skipping insertion in model container [2022-11-25 18:07:33,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:07:28" (2/3) ... [2022-11-25 18:07:33,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59589f1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:07:33, skipping insertion in model container [2022-11-25 18:07:33,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:07:33" (3/3) ... [2022-11-25 18:07:33,995 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label08.c [2022-11-25 18:07:34,018 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:07:34,018 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 18:07:34,120 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:07:34,132 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@31098c78, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:07:34,133 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 18:07:34,144 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:07:34,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-25 18:07:34,160 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:07:34,161 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:07:34,162 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:07:34,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:07:34,172 INFO L85 PathProgramCache]: Analyzing trace with hash -2074400678, now seen corresponding path program 1 times [2022-11-25 18:07:34,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:07:34,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552845941] [2022-11-25 18:07:34,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:07:34,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:07:34,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:34,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:07:34,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:07:34,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552845941] [2022-11-25 18:07:34,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552845941] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:07:34,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:07:34,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:07:34,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036970469] [2022-11-25 18:07:34,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:07:34,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:07:34,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:07:34,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:07:34,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:07:34,694 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:07:38,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:07:38,663 INFO L93 Difference]: Finished difference Result 1642 states and 3024 transitions. [2022-11-25 18:07:38,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:07:38,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-25 18:07:38,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:07:38,690 INFO L225 Difference]: With dead ends: 1642 [2022-11-25 18:07:38,691 INFO L226 Difference]: Without dead ends: 975 [2022-11-25 18:07:38,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:07:38,702 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 432 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-25 18:07:38,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 550 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-25 18:07:38,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2022-11-25 18:07:38,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 972. [2022-11-25 18:07:38,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 1.5077239958805355) internal successors, (1464), 971 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:07:38,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1464 transitions. [2022-11-25 18:07:38,838 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1464 transitions. Word has length 58 [2022-11-25 18:07:38,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:07:38,839 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 1464 transitions. [2022-11-25 18:07:38,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:07:38,840 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1464 transitions. [2022-11-25 18:07:38,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-25 18:07:38,846 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:07:38,847 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:07:38,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:07:38,847 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:07:38,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:07:38,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1002261606, now seen corresponding path program 1 times [2022-11-25 18:07:38,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:07:38,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004496075] [2022-11-25 18:07:38,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:07:38,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:07:38,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:39,323 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:07:39,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:07:39,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004496075] [2022-11-25 18:07:39,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004496075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:07:39,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:07:39,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:07:39,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559882768] [2022-11-25 18:07:39,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:07:39,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:07:39,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:07:39,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:07:39,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:07:39,327 INFO L87 Difference]: Start difference. First operand 972 states and 1464 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:07:43,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:07:43,028 INFO L93 Difference]: Finished difference Result 2814 states and 4242 transitions. [2022-11-25 18:07:43,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:07:43,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2022-11-25 18:07:43,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:07:43,042 INFO L225 Difference]: With dead ends: 2814 [2022-11-25 18:07:43,042 INFO L226 Difference]: Without dead ends: 1844 [2022-11-25 18:07:43,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:07:43,047 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 433 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-25 18:07:43,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 921 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-25 18:07:43,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2022-11-25 18:07:43,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1842. [2022-11-25 18:07:43,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1841 states have (on average 1.3601303639326452) internal successors, (2504), 1841 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:07:43,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2504 transitions. [2022-11-25 18:07:43,111 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2504 transitions. Word has length 128 [2022-11-25 18:07:43,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:07:43,112 INFO L495 AbstractCegarLoop]: Abstraction has 1842 states and 2504 transitions. [2022-11-25 18:07:43,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:07:43,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2504 transitions. [2022-11-25 18:07:43,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-25 18:07:43,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:07:43,119 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:07:43,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 18:07:43,120 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:07:43,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:07:43,121 INFO L85 PathProgramCache]: Analyzing trace with hash -433901431, now seen corresponding path program 1 times [2022-11-25 18:07:43,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:07:43,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938053458] [2022-11-25 18:07:43,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:07:43,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:07:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:43,464 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:07:43,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:07:43,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938053458] [2022-11-25 18:07:43,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938053458] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:07:43,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:07:43,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:07:43,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869524590] [2022-11-25 18:07:43,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:07:43,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:07:43,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:07:43,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:07:43,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:07:43,476 INFO L87 Difference]: Start difference. First operand 1842 states and 2504 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:07:46,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:07:46,431 INFO L93 Difference]: Finished difference Result 5395 states and 7326 transitions. [2022-11-25 18:07:46,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:07:46,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2022-11-25 18:07:46,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:07:46,441 INFO L225 Difference]: With dead ends: 5395 [2022-11-25 18:07:46,441 INFO L226 Difference]: Without dead ends: 2701 [2022-11-25 18:07:46,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:07:46,454 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 368 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-25 18:07:46,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-25 18:07:46,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2022-11-25 18:07:46,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 2701. [2022-11-25 18:07:46,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2701 states, 2700 states have (on average 1.191851851851852) internal successors, (3218), 2700 states have internal predecessors, (3218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:07:46,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2701 states to 2701 states and 3218 transitions. [2022-11-25 18:07:46,527 INFO L78 Accepts]: Start accepts. Automaton has 2701 states and 3218 transitions. Word has length 150 [2022-11-25 18:07:46,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:07:46,529 INFO L495 AbstractCegarLoop]: Abstraction has 2701 states and 3218 transitions. [2022-11-25 18:07:46,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:07:46,530 INFO L276 IsEmpty]: Start isEmpty. Operand 2701 states and 3218 transitions. [2022-11-25 18:07:46,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-25 18:07:46,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:07:46,548 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:07:46,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 18:07:46,548 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:07:46,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:07:46,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1641598275, now seen corresponding path program 1 times [2022-11-25 18:07:46,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:07:46,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936616500] [2022-11-25 18:07:46,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:07:46,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:07:46,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:46,921 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:07:46,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:07:46,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936616500] [2022-11-25 18:07:46,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936616500] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:07:46,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:07:46,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:07:46,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166976271] [2022-11-25 18:07:46,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:07:46,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:07:46,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:07:46,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:07:46,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:07:46,926 INFO L87 Difference]: Start difference. First operand 2701 states and 3218 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:07:49,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:07:49,560 INFO L93 Difference]: Finished difference Result 7108 states and 8598 transitions. [2022-11-25 18:07:49,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:07:49,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 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 210 [2022-11-25 18:07:49,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:07:49,575 INFO L225 Difference]: With dead ends: 7108 [2022-11-25 18:07:49,575 INFO L226 Difference]: Without dead ends: 4409 [2022-11-25 18:07:49,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:07:49,580 INFO L413 NwaCegarLoop]: 726 mSDtfsCounter, 496 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-25 18:07:49,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 784 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-25 18:07:49,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4409 states. [2022-11-25 18:07:49,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4409 to 4409. [2022-11-25 18:07:49,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4409 states, 4408 states have (on average 1.1705989110707804) internal successors, (5160), 4408 states have internal predecessors, (5160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:07:49,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4409 states to 4409 states and 5160 transitions. [2022-11-25 18:07:49,669 INFO L78 Accepts]: Start accepts. Automaton has 4409 states and 5160 transitions. Word has length 210 [2022-11-25 18:07:49,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:07:49,671 INFO L495 AbstractCegarLoop]: Abstraction has 4409 states and 5160 transitions. [2022-11-25 18:07:49,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:07:49,671 INFO L276 IsEmpty]: Start isEmpty. Operand 4409 states and 5160 transitions. [2022-11-25 18:07:49,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-11-25 18:07:49,676 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:07:49,676 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:07:49,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 18:07:49,677 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:07:49,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:07:49,678 INFO L85 PathProgramCache]: Analyzing trace with hash 734182776, now seen corresponding path program 1 times [2022-11-25 18:07:49,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:07:49,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977546968] [2022-11-25 18:07:49,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:07:49,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:07:49,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:50,043 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-25 18:07:50,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:07:50,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977546968] [2022-11-25 18:07:50,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977546968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:07:50,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:07:50,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:07:50,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7014986] [2022-11-25 18:07:50,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:07:50,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:07:50,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:07:50,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:07:50,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:07:50,047 INFO L87 Difference]: Start difference. First operand 4409 states and 5160 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 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) [2022-11-25 18:07:52,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:07:52,956 INFO L93 Difference]: Finished difference Result 10936 states and 12970 transitions. [2022-11-25 18:07:52,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:07:52,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 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 212 [2022-11-25 18:07:52,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:07:52,984 INFO L225 Difference]: With dead ends: 10936 [2022-11-25 18:07:52,985 INFO L226 Difference]: Without dead ends: 6528 [2022-11-25 18:07:52,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:07:52,992 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 393 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-25 18:07:52,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 444 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-25 18:07:53,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6528 states. [2022-11-25 18:07:53,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6528 to 4382. [2022-11-25 18:07:53,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 4381 states have (on average 1.1684546907098836) internal successors, (5119), 4381 states have internal predecessors, (5119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:07:53,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 5119 transitions. [2022-11-25 18:07:53,117 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 5119 transitions. Word has length 212 [2022-11-25 18:07:53,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:07:53,119 INFO L495 AbstractCegarLoop]: Abstraction has 4382 states and 5119 transitions. [2022-11-25 18:07:53,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 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) [2022-11-25 18:07:53,124 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 5119 transitions. [2022-11-25 18:07:53,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-11-25 18:07:53,130 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:07:53,131 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:07:53,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 18:07:53,133 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:07:53,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:07:53,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1597642430, now seen corresponding path program 1 times [2022-11-25 18:07:53,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:07:53,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069071568] [2022-11-25 18:07:53,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:07:53,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:07:53,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:53,721 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-25 18:07:53,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:07:53,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069071568] [2022-11-25 18:07:53,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069071568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:07:53,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:07:53,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:07:53,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163251016] [2022-11-25 18:07:53,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:07:53,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:07:53,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:07:53,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:07:53,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:07:53,726 INFO L87 Difference]: Start difference. First operand 4382 states and 5119 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:07:57,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:07:57,245 INFO L93 Difference]: Finished difference Result 10045 states and 11706 transitions. [2022-11-25 18:07:57,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:07:57,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 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 278 [2022-11-25 18:07:57,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:07:57,274 INFO L225 Difference]: With dead ends: 10045 [2022-11-25 18:07:57,275 INFO L226 Difference]: Without dead ends: 5665 [2022-11-25 18:07:57,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:07:57,284 INFO L413 NwaCegarLoop]: 833 mSDtfsCounter, 378 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-25 18:07:57,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 894 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-25 18:07:57,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5665 states. [2022-11-25 18:07:57,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5665 to 5234. [2022-11-25 18:07:57,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5234 states, 5233 states have (on average 1.1587999235620103) internal successors, (6064), 5233 states have internal predecessors, (6064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:07:57,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 6064 transitions. [2022-11-25 18:07:57,409 INFO L78 Accepts]: Start accepts. Automaton has 5234 states and 6064 transitions. Word has length 278 [2022-11-25 18:07:57,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:07:57,410 INFO L495 AbstractCegarLoop]: Abstraction has 5234 states and 6064 transitions. [2022-11-25 18:07:57,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:07:57,411 INFO L276 IsEmpty]: Start isEmpty. Operand 5234 states and 6064 transitions. [2022-11-25 18:07:57,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2022-11-25 18:07:57,417 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:07:57,418 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:07:57,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 18:07:57,418 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:07:57,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:07:57,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1503094523, now seen corresponding path program 1 times [2022-11-25 18:07:57,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:07:57,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867674497] [2022-11-25 18:07:57,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:07:57,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:07:57,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:07:58,054 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 300 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-25 18:07:58,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:07:58,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867674497] [2022-11-25 18:07:58,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867674497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:07:58,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:07:58,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:07:58,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820017960] [2022-11-25 18:07:58,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:07:58,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:07:58,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:07:58,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:07:58,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:07:58,057 INFO L87 Difference]: Start difference. First operand 5234 states and 6064 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:01,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:08:01,297 INFO L93 Difference]: Finished difference Result 13051 states and 15223 transitions. [2022-11-25 18:08:01,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:08:01,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 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 290 [2022-11-25 18:08:01,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:08:01,321 INFO L225 Difference]: With dead ends: 13051 [2022-11-25 18:08:01,321 INFO L226 Difference]: Without dead ends: 7391 [2022-11-25 18:08:01,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:08:01,328 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 495 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:08:01,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 629 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-25 18:08:01,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7391 states. [2022-11-25 18:08:01,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7391 to 6959. [2022-11-25 18:08:01,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6959 states, 6958 states have (on average 1.1636964645012935) internal successors, (8097), 6958 states have internal predecessors, (8097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:01,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6959 states to 6959 states and 8097 transitions. [2022-11-25 18:08:01,531 INFO L78 Accepts]: Start accepts. Automaton has 6959 states and 8097 transitions. Word has length 290 [2022-11-25 18:08:01,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:08:01,532 INFO L495 AbstractCegarLoop]: Abstraction has 6959 states and 8097 transitions. [2022-11-25 18:08:01,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:01,533 INFO L276 IsEmpty]: Start isEmpty. Operand 6959 states and 8097 transitions. [2022-11-25 18:08:01,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2022-11-25 18:08:01,539 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:08:01,540 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:08:01,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 18:08:01,540 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:08:01,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:08:01,541 INFO L85 PathProgramCache]: Analyzing trace with hash 9506808, now seen corresponding path program 1 times [2022-11-25 18:08:01,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:08:01,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42455149] [2022-11-25 18:08:01,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:08:01,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:08:01,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:08:01,835 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-25 18:08:01,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:08:01,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42455149] [2022-11-25 18:08:01,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42455149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:08:01,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:08:01,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:08:01,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720048884] [2022-11-25 18:08:01,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:08:01,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:08:01,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:08:01,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:08:01,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:08:01,840 INFO L87 Difference]: Start difference. First operand 6959 states and 8097 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:04,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:08:04,468 INFO L93 Difference]: Finished difference Result 17316 states and 20393 transitions. [2022-11-25 18:08:04,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:08:04,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 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 295 [2022-11-25 18:08:04,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:08:04,500 INFO L225 Difference]: With dead ends: 17316 [2022-11-25 18:08:04,500 INFO L226 Difference]: Without dead ends: 10359 [2022-11-25 18:08:04,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:08:04,509 INFO L413 NwaCegarLoop]: 774 mSDtfsCounter, 379 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-25 18:08:04,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 841 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-25 18:08:04,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10359 states. [2022-11-25 18:08:04,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10359 to 9509. [2022-11-25 18:08:04,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9509 states, 9508 states have (on average 1.141459823306689) internal successors, (10853), 9508 states have internal predecessors, (10853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:04,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9509 states to 9509 states and 10853 transitions. [2022-11-25 18:08:04,741 INFO L78 Accepts]: Start accepts. Automaton has 9509 states and 10853 transitions. Word has length 295 [2022-11-25 18:08:04,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:08:04,742 INFO L495 AbstractCegarLoop]: Abstraction has 9509 states and 10853 transitions. [2022-11-25 18:08:04,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:04,743 INFO L276 IsEmpty]: Start isEmpty. Operand 9509 states and 10853 transitions. [2022-11-25 18:08:04,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2022-11-25 18:08:04,753 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:08:04,753 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:08:04,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 18:08:04,754 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:08:04,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:08:04,755 INFO L85 PathProgramCache]: Analyzing trace with hash -881276880, now seen corresponding path program 1 times [2022-11-25 18:08:04,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:08:04,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369290178] [2022-11-25 18:08:04,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:08:04,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:08:04,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:08:05,241 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 300 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-25 18:08:05,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:08:05,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369290178] [2022-11-25 18:08:05,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369290178] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:08:05,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:08:05,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:08:05,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630532858] [2022-11-25 18:08:05,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:08:05,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:08:05,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:08:05,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:08:05,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:08:05,246 INFO L87 Difference]: Start difference. First operand 9509 states and 10853 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:08,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:08:08,307 INFO L93 Difference]: Finished difference Result 22432 states and 25678 transitions. [2022-11-25 18:08:08,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:08:08,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 313 [2022-11-25 18:08:08,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:08:08,336 INFO L225 Difference]: With dead ends: 22432 [2022-11-25 18:08:08,337 INFO L226 Difference]: Without dead ends: 12493 [2022-11-25 18:08:08,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:08:08,349 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 444 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 1506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-25 18:08:08,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 294 Invalid, 1506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-25 18:08:08,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12493 states. [2022-11-25 18:08:08,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12493 to 11637. [2022-11-25 18:08:08,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11637 states, 11636 states have (on average 1.1473014781711928) internal successors, (13350), 11636 states have internal predecessors, (13350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:08,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11637 states to 11637 states and 13350 transitions. [2022-11-25 18:08:08,564 INFO L78 Accepts]: Start accepts. Automaton has 11637 states and 13350 transitions. Word has length 313 [2022-11-25 18:08:08,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:08:08,565 INFO L495 AbstractCegarLoop]: Abstraction has 11637 states and 13350 transitions. [2022-11-25 18:08:08,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:08,566 INFO L276 IsEmpty]: Start isEmpty. Operand 11637 states and 13350 transitions. [2022-11-25 18:08:08,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-11-25 18:08:08,574 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:08:08,575 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:08:08,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 18:08:08,575 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:08:08,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:08:08,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1943349219, now seen corresponding path program 1 times [2022-11-25 18:08:08,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:08:08,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60096187] [2022-11-25 18:08:08,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:08:08,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:08:08,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:08:09,257 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-25 18:08:09,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:08:09,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60096187] [2022-11-25 18:08:09,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60096187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:08:09,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:08:09,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:08:09,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691296037] [2022-11-25 18:08:09,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:08:09,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:08:09,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:08:09,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:08:09,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:08:09,261 INFO L87 Difference]: Start difference. First operand 11637 states and 13350 transitions. Second operand has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:14,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:08:14,395 INFO L93 Difference]: Finished difference Result 41232 states and 47494 transitions. [2022-11-25 18:08:14,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:08:14,395 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 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 318 [2022-11-25 18:08:14,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:08:14,447 INFO L225 Difference]: With dead ends: 41232 [2022-11-25 18:08:14,448 INFO L226 Difference]: Without dead ends: 28316 [2022-11-25 18:08:14,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:08:14,466 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 867 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 2613 mSolverCounterSat, 489 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 3102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 489 IncrementalHoareTripleChecker+Valid, 2613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-25 18:08:14,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 302 Invalid, 3102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [489 Valid, 2613 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-25 18:08:14,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28316 states. [2022-11-25 18:08:14,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28316 to 27841. [2022-11-25 18:08:14,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27841 states, 27840 states have (on average 1.135308908045977) internal successors, (31607), 27840 states have internal predecessors, (31607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:15,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27841 states to 27841 states and 31607 transitions. [2022-11-25 18:08:15,028 INFO L78 Accepts]: Start accepts. Automaton has 27841 states and 31607 transitions. Word has length 318 [2022-11-25 18:08:15,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:08:15,029 INFO L495 AbstractCegarLoop]: Abstraction has 27841 states and 31607 transitions. [2022-11-25 18:08:15,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:15,029 INFO L276 IsEmpty]: Start isEmpty. Operand 27841 states and 31607 transitions. [2022-11-25 18:08:15,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2022-11-25 18:08:15,038 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:08:15,040 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:08:15,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 18:08:15,040 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:08:15,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:08:15,041 INFO L85 PathProgramCache]: Analyzing trace with hash 2094585251, now seen corresponding path program 1 times [2022-11-25 18:08:15,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:08:15,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390209124] [2022-11-25 18:08:15,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:08:15,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:08:15,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:08:15,525 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-25 18:08:15,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:08:15,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390209124] [2022-11-25 18:08:15,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390209124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:08:15,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:08:15,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:08:15,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122385298] [2022-11-25 18:08:15,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:08:15,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:08:15,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:08:15,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:08:15,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:08:15,530 INFO L87 Difference]: Start difference. First operand 27841 states and 31607 transitions. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:19,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:08:19,239 INFO L93 Difference]: Finished difference Result 71054 states and 80878 transitions. [2022-11-25 18:08:19,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:08:19,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 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 347 [2022-11-25 18:08:19,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:08:19,300 INFO L225 Difference]: With dead ends: 71054 [2022-11-25 18:08:19,301 INFO L226 Difference]: Without dead ends: 42777 [2022-11-25 18:08:19,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:08:19,326 INFO L413 NwaCegarLoop]: 654 mSDtfsCounter, 449 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 1549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-25 18:08:19,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 704 Invalid, 1549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 1317 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-25 18:08:19,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42777 states. [2022-11-25 18:08:19,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42777 to 41033. [2022-11-25 18:08:20,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41033 states, 41032 states have (on average 1.122514135309027) internal successors, (46059), 41032 states have internal predecessors, (46059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:20,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41033 states to 41033 states and 46059 transitions. [2022-11-25 18:08:20,108 INFO L78 Accepts]: Start accepts. Automaton has 41033 states and 46059 transitions. Word has length 347 [2022-11-25 18:08:20,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:08:20,109 INFO L495 AbstractCegarLoop]: Abstraction has 41033 states and 46059 transitions. [2022-11-25 18:08:20,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:20,109 INFO L276 IsEmpty]: Start isEmpty. Operand 41033 states and 46059 transitions. [2022-11-25 18:08:20,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2022-11-25 18:08:20,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:08:20,125 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:08:20,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 18:08:20,125 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:08:20,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:08:20,126 INFO L85 PathProgramCache]: Analyzing trace with hash 886548778, now seen corresponding path program 1 times [2022-11-25 18:08:20,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:08:20,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159477252] [2022-11-25 18:08:20,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:08:20,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:08:20,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:08:20,677 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-11-25 18:08:20,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:08:20,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159477252] [2022-11-25 18:08:20,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159477252] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:08:20,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:08:20,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:08:20,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619457492] [2022-11-25 18:08:20,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:08:20,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:08:20,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:08:20,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:08:20,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:08:20,680 INFO L87 Difference]: Start difference. First operand 41033 states and 46059 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:23,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:08:23,445 INFO L93 Difference]: Finished difference Result 91426 states and 102896 transitions. [2022-11-25 18:08:23,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:08:23,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 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 391 [2022-11-25 18:08:23,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:08:23,621 INFO L225 Difference]: With dead ends: 91426 [2022-11-25 18:08:23,622 INFO L226 Difference]: Without dead ends: 49966 [2022-11-25 18:08:23,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:08:23,672 INFO L413 NwaCegarLoop]: 676 mSDtfsCounter, 440 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-25 18:08:23,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 727 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-25 18:08:23,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49966 states. [2022-11-25 18:08:24,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49966 to 49959. [2022-11-25 18:08:24,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49959 states, 49958 states have (on average 1.1129548821009647) internal successors, (55601), 49958 states have internal predecessors, (55601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:24,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49959 states to 49959 states and 55601 transitions. [2022-11-25 18:08:24,738 INFO L78 Accepts]: Start accepts. Automaton has 49959 states and 55601 transitions. Word has length 391 [2022-11-25 18:08:24,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:08:24,739 INFO L495 AbstractCegarLoop]: Abstraction has 49959 states and 55601 transitions. [2022-11-25 18:08:24,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:24,740 INFO L276 IsEmpty]: Start isEmpty. Operand 49959 states and 55601 transitions. [2022-11-25 18:08:24,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2022-11-25 18:08:24,764 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:08:24,765 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:08:24,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 18:08:24,765 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:08:24,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:08:24,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1094283383, now seen corresponding path program 1 times [2022-11-25 18:08:24,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:08:24,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666538223] [2022-11-25 18:08:24,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:08:24,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:08:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:08:25,565 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 244 proven. 82 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-25 18:08:25,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:08:25,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666538223] [2022-11-25 18:08:25,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666538223] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:08:25,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796930900] [2022-11-25 18:08:25,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:08:25,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:08:25,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bfef182-1684-4ba7-80b4-57b12434a970/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:08:25,571 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bfef182-1684-4ba7-80b4-57b12434a970/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:08:25,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bfef182-1684-4ba7-80b4-57b12434a970/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 18:08:25,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:08:25,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:08:25,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:08:26,792 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 244 proven. 82 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-25 18:08:26,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:08:27,301 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 326 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-25 18:08:27,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796930900] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 18:08:27,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:08:27,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2022-11-25 18:08:27,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580867838] [2022-11-25 18:08:27,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:08:27,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:08:27,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:08:27,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:08:27,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:08:27,306 INFO L87 Difference]: Start difference. First operand 49959 states and 55601 transitions. Second operand has 4 states, 4 states have (on average 84.75) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:32,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:08:32,040 INFO L93 Difference]: Finished difference Result 120772 states and 134197 transitions. [2022-11-25 18:08:32,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:08:32,041 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 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 394 [2022-11-25 18:08:32,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:08:32,111 INFO L225 Difference]: With dead ends: 120772 [2022-11-25 18:08:32,111 INFO L226 Difference]: Without dead ends: 69946 [2022-11-25 18:08:32,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 789 GetRequests, 783 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:08:32,140 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 859 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 2111 mSolverCounterSat, 691 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 2802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 691 IncrementalHoareTripleChecker+Valid, 2111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:08:32,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 144 Invalid, 2802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [691 Valid, 2111 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-25 18:08:32,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69946 states. [2022-11-25 18:08:33,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69946 to 67818. [2022-11-25 18:08:33,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67818 states, 67817 states have (on average 1.0979105534010647) internal successors, (74457), 67817 states have internal predecessors, (74457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:33,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67818 states to 67818 states and 74457 transitions. [2022-11-25 18:08:33,290 INFO L78 Accepts]: Start accepts. Automaton has 67818 states and 74457 transitions. Word has length 394 [2022-11-25 18:08:33,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:08:33,290 INFO L495 AbstractCegarLoop]: Abstraction has 67818 states and 74457 transitions. [2022-11-25 18:08:33,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:33,291 INFO L276 IsEmpty]: Start isEmpty. Operand 67818 states and 74457 transitions. [2022-11-25 18:08:33,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2022-11-25 18:08:33,304 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:08:33,305 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:08:33,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bfef182-1684-4ba7-80b4-57b12434a970/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 18:08:33,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bfef182-1684-4ba7-80b4-57b12434a970/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-25 18:08:33,511 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:08:33,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:08:33,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1101543085, now seen corresponding path program 1 times [2022-11-25 18:08:33,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:08:33,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459604734] [2022-11-25 18:08:33,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:08:33,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:08:33,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:08:34,348 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 356 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-25 18:08:34,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:08:34,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459604734] [2022-11-25 18:08:34,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459604734] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:08:34,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:08:34,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:08:34,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205825910] [2022-11-25 18:08:34,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:08:34,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:08:34,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:08:34,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:08:34,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:08:34,352 INFO L87 Difference]: Start difference. First operand 67818 states and 74457 transitions. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:36,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:08:36,931 INFO L93 Difference]: Finished difference Result 139463 states and 153018 transitions. [2022-11-25 18:08:36,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:08:36,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 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 424 [2022-11-25 18:08:36,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:08:37,000 INFO L225 Difference]: With dead ends: 139463 [2022-11-25 18:08:37,000 INFO L226 Difference]: Without dead ends: 71647 [2022-11-25 18:08:37,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:08:37,022 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 358 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 1251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:08:37,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 349 Invalid, 1251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-25 18:08:37,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71647 states. [2022-11-25 18:08:37,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71647 to 70791. [2022-11-25 18:08:37,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70791 states, 70790 states have (on average 1.09598813391722) internal successors, (77585), 70790 states have internal predecessors, (77585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:38,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70791 states to 70791 states and 77585 transitions. [2022-11-25 18:08:38,178 INFO L78 Accepts]: Start accepts. Automaton has 70791 states and 77585 transitions. Word has length 424 [2022-11-25 18:08:38,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:08:38,179 INFO L495 AbstractCegarLoop]: Abstraction has 70791 states and 77585 transitions. [2022-11-25 18:08:38,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:38,179 INFO L276 IsEmpty]: Start isEmpty. Operand 70791 states and 77585 transitions. [2022-11-25 18:08:38,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2022-11-25 18:08:38,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:08:38,189 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:08:38,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 18:08:38,189 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:08:38,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:08:38,190 INFO L85 PathProgramCache]: Analyzing trace with hash 186174739, now seen corresponding path program 1 times [2022-11-25 18:08:38,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:08:38,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650969776] [2022-11-25 18:08:38,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:08:38,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:08:38,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:08:38,535 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 423 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-11-25 18:08:38,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:08:38,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650969776] [2022-11-25 18:08:38,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650969776] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:08:38,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:08:38,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:08:38,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671701663] [2022-11-25 18:08:38,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:08:38,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:08:38,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:08:38,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:08:38,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:08:38,541 INFO L87 Difference]: Start difference. First operand 70791 states and 77585 transitions. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:41,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:08:41,504 INFO L93 Difference]: Finished difference Result 148384 states and 162924 transitions. [2022-11-25 18:08:41,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:08:41,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 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 433 [2022-11-25 18:08:41,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:08:41,608 INFO L225 Difference]: With dead ends: 148384 [2022-11-25 18:08:41,608 INFO L226 Difference]: Without dead ends: 76741 [2022-11-25 18:08:41,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:08:41,651 INFO L413 NwaCegarLoop]: 586 mSDtfsCounter, 448 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 1425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-25 18:08:41,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 611 Invalid, 1425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-25 18:08:41,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76741 states. [2022-11-25 18:08:42,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76741 to 66506. [2022-11-25 18:08:42,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66506 states, 66505 states have (on average 1.0966694233516276) internal successors, (72934), 66505 states have internal predecessors, (72934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:42,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66506 states to 66506 states and 72934 transitions. [2022-11-25 18:08:42,682 INFO L78 Accepts]: Start accepts. Automaton has 66506 states and 72934 transitions. Word has length 433 [2022-11-25 18:08:42,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:08:42,683 INFO L495 AbstractCegarLoop]: Abstraction has 66506 states and 72934 transitions. [2022-11-25 18:08:42,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:42,683 INFO L276 IsEmpty]: Start isEmpty. Operand 66506 states and 72934 transitions. [2022-11-25 18:08:42,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-11-25 18:08:42,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:08:42,691 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:08:42,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 18:08:42,691 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:08:42,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:08:42,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1324595424, now seen corresponding path program 1 times [2022-11-25 18:08:42,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:08:42,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46981953] [2022-11-25 18:08:42,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:08:42,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:08:42,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:08:44,097 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 382 proven. 56 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-11-25 18:08:44,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:08:44,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46981953] [2022-11-25 18:08:44,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46981953] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:08:44,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246260129] [2022-11-25 18:08:44,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:08:44,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:08:44,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bfef182-1684-4ba7-80b4-57b12434a970/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:08:44,100 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bfef182-1684-4ba7-80b4-57b12434a970/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:08:44,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bfef182-1684-4ba7-80b4-57b12434a970/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 18:08:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:08:44,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 18:08:44,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:08:44,814 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 441 proven. 82 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-25 18:08:44,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:08:45,985 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 441 proven. 82 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-11-25 18:08:45,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246260129] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:08:45,986 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:08:45,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2022-11-25 18:08:45,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354079104] [2022-11-25 18:08:45,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:08:45,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 18:08:45,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:08:45,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 18:08:45,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:08:45,990 INFO L87 Difference]: Start difference. First operand 66506 states and 72934 transitions. Second operand has 9 states, 9 states have (on average 83.66666666666667) internal successors, (753), 9 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:07,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:09:07,798 INFO L93 Difference]: Finished difference Result 180301 states and 197151 transitions. [2022-11-25 18:09:07,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-25 18:09:07,799 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 83.66666666666667) internal successors, (753), 9 states have internal predecessors, (753), 0 states have call successors, (0), 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 438 [2022-11-25 18:09:07,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:09:07,921 INFO L225 Difference]: With dead ends: 180301 [2022-11-25 18:09:07,921 INFO L226 Difference]: Without dead ends: 112947 [2022-11-25 18:09:07,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 909 GetRequests, 887 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=150, Invalid=402, Unknown=0, NotChecked=0, Total=552 [2022-11-25 18:09:07,944 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 9360 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 15722 mSolverCounterSat, 1903 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9360 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 17625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1903 IncrementalHoareTripleChecker+Valid, 15722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2022-11-25 18:09:07,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9360 Valid, 490 Invalid, 17625 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1903 Valid, 15722 Invalid, 0 Unknown, 0 Unchecked, 20.3s Time] [2022-11-25 18:09:08,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112947 states. [2022-11-25 18:09:09,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112947 to 97577. [2022-11-25 18:09:09,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97577 states, 97576 states have (on average 1.08705009428548) internal successors, (106070), 97576 states have internal predecessors, (106070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:09,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97577 states to 97577 states and 106070 transitions. [2022-11-25 18:09:09,612 INFO L78 Accepts]: Start accepts. Automaton has 97577 states and 106070 transitions. Word has length 438 [2022-11-25 18:09:09,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:09:09,612 INFO L495 AbstractCegarLoop]: Abstraction has 97577 states and 106070 transitions. [2022-11-25 18:09:09,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 83.66666666666667) internal successors, (753), 9 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:09,613 INFO L276 IsEmpty]: Start isEmpty. Operand 97577 states and 106070 transitions. [2022-11-25 18:09:09,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2022-11-25 18:09:09,620 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:09:09,620 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:09:09,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bfef182-1684-4ba7-80b4-57b12434a970/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 18:09:09,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bfef182-1684-4ba7-80b4-57b12434a970/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-25 18:09:09,822 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:09:09,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:09,823 INFO L85 PathProgramCache]: Analyzing trace with hash 515143898, now seen corresponding path program 1 times [2022-11-25 18:09:09,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:09:09,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897163964] [2022-11-25 18:09:09,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:09:09,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:09:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:11,549 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:09:11,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:09:11,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897163964] [2022-11-25 18:09:11,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897163964] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:09:11,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:09:11,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:09:11,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203786304] [2022-11-25 18:09:11,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:09:11,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:09:11,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:09:11,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:09:11,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:09:11,554 INFO L87 Difference]: Start difference. First operand 97577 states and 106070 transitions. Second operand has 4 states, 4 states have (on average 117.75) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:16,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:09:16,218 INFO L93 Difference]: Finished difference Result 107819 states and 116831 transitions. [2022-11-25 18:09:16,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:09:16,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 117.75) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 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 471 [2022-11-25 18:09:16,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:09:16,343 INFO L225 Difference]: With dead ends: 107819 [2022-11-25 18:09:16,343 INFO L226 Difference]: Without dead ends: 107392 [2022-11-25 18:09:16,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:09:16,366 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 427 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 2303 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 2427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 2303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:09:16,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 301 Invalid, 2427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 2303 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-25 18:09:16,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107392 states. [2022-11-25 18:09:17,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107392 to 97577. [2022-11-25 18:09:17,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97577 states, 97576 states have (on average 1.087039845863737) internal successors, (106069), 97576 states have internal predecessors, (106069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:18,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97577 states to 97577 states and 106069 transitions. [2022-11-25 18:09:18,065 INFO L78 Accepts]: Start accepts. Automaton has 97577 states and 106069 transitions. Word has length 471 [2022-11-25 18:09:18,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:09:18,065 INFO L495 AbstractCegarLoop]: Abstraction has 97577 states and 106069 transitions. [2022-11-25 18:09:18,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.75) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:18,066 INFO L276 IsEmpty]: Start isEmpty. Operand 97577 states and 106069 transitions. [2022-11-25 18:09:18,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2022-11-25 18:09:18,074 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:09:18,075 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:09:18,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 18:09:18,075 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:09:18,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:18,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1587292591, now seen corresponding path program 1 times [2022-11-25 18:09:18,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:09:18,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308984688] [2022-11-25 18:09:18,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:09:18,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:09:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:18,997 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 367 proven. 0 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2022-11-25 18:09:18,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:09:18,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308984688] [2022-11-25 18:09:18,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308984688] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:09:18,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:09:18,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:09:18,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880031761] [2022-11-25 18:09:18,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:09:18,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:09:18,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:09:19,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:09:19,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:09:19,000 INFO L87 Difference]: Start difference. First operand 97577 states and 106069 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:21,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:09:21,367 INFO L93 Difference]: Finished difference Result 188335 states and 204404 transitions. [2022-11-25 18:09:21,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:09:21,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 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 487 [2022-11-25 18:09:21,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:09:21,465 INFO L225 Difference]: With dead ends: 188335 [2022-11-25 18:09:21,465 INFO L226 Difference]: Without dead ends: 91609 [2022-11-25 18:09:21,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:09:21,487 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 588 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-25 18:09:21,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [588 Valid, 94 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-25 18:09:21,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91609 states. [2022-11-25 18:09:22,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91609 to 91592. [2022-11-25 18:09:22,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91592 states, 91591 states have (on average 1.0825299428983197) internal successors, (99150), 91591 states have internal predecessors, (99150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:22,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91592 states to 91592 states and 99150 transitions. [2022-11-25 18:09:22,825 INFO L78 Accepts]: Start accepts. Automaton has 91592 states and 99150 transitions. Word has length 487 [2022-11-25 18:09:22,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:09:22,826 INFO L495 AbstractCegarLoop]: Abstraction has 91592 states and 99150 transitions. [2022-11-25 18:09:22,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:22,826 INFO L276 IsEmpty]: Start isEmpty. Operand 91592 states and 99150 transitions. [2022-11-25 18:09:22,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2022-11-25 18:09:22,834 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:09:22,834 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:09:22,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-25 18:09:22,835 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:09:22,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:22,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1062405964, now seen corresponding path program 1 times [2022-11-25 18:09:22,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:09:22,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981019297] [2022-11-25 18:09:22,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:09:22,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:09:23,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:23,590 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-11-25 18:09:23,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:09:23,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981019297] [2022-11-25 18:09:23,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981019297] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:09:23,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:09:23,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:09:23,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047487042] [2022-11-25 18:09:23,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:09:23,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:09:23,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:09:23,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:09:23,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:09:23,595 INFO L87 Difference]: Start difference. First operand 91592 states and 99150 transitions. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:27,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:09:27,143 INFO L93 Difference]: Finished difference Result 181052 states and 196042 transitions. [2022-11-25 18:09:27,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:09:27,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 501 [2022-11-25 18:09:27,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:09:27,275 INFO L225 Difference]: With dead ends: 181052 [2022-11-25 18:09:27,275 INFO L226 Difference]: Without dead ends: 90311 [2022-11-25 18:09:27,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:09:27,318 INFO L413 NwaCegarLoop]: 632 mSDtfsCounter, 431 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-25 18:09:27,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 686 Invalid, 1276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-25 18:09:27,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90311 states. [2022-11-25 18:09:28,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90311 to 88609. [2022-11-25 18:09:28,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88609 states, 88608 states have (on average 1.0687861141206212) internal successors, (94703), 88608 states have internal predecessors, (94703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:28,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88609 states to 88609 states and 94703 transitions. [2022-11-25 18:09:28,902 INFO L78 Accepts]: Start accepts. Automaton has 88609 states and 94703 transitions. Word has length 501 [2022-11-25 18:09:28,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:09:28,903 INFO L495 AbstractCegarLoop]: Abstraction has 88609 states and 94703 transitions. [2022-11-25 18:09:28,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:28,903 INFO L276 IsEmpty]: Start isEmpty. Operand 88609 states and 94703 transitions. [2022-11-25 18:09:28,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2022-11-25 18:09:28,912 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:09:28,912 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:09:28,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-25 18:09:28,913 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:09:28,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:28,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1384033671, now seen corresponding path program 1 times [2022-11-25 18:09:28,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:09:28,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661650586] [2022-11-25 18:09:28,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:09:28,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:09:29,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:29,590 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 223 proven. 0 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2022-11-25 18:09:29,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:09:29,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661650586] [2022-11-25 18:09:29,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661650586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:09:29,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:09:29,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:09:29,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435332697] [2022-11-25 18:09:29,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:09:29,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:09:29,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:09:29,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:09:29,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:09:29,595 INFO L87 Difference]: Start difference. First operand 88609 states and 94703 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:33,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:09:33,301 INFO L93 Difference]: Finished difference Result 184892 states and 197657 transitions. [2022-11-25 18:09:33,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:09:33,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 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 507 [2022-11-25 18:09:33,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:09:33,415 INFO L225 Difference]: With dead ends: 184892 [2022-11-25 18:09:33,416 INFO L226 Difference]: Without dead ends: 95429 [2022-11-25 18:09:33,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:09:33,446 INFO L413 NwaCegarLoop]: 717 mSDtfsCounter, 390 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 1364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-25 18:09:33,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 764 Invalid, 1364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1231 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-25 18:09:33,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95429 states. [2022-11-25 18:09:34,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95429 to 91153. [2022-11-25 18:09:35,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91153 states, 91152 states have (on average 1.066449447077409) internal successors, (97209), 91152 states have internal predecessors, (97209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:35,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91153 states to 91153 states and 97209 transitions. [2022-11-25 18:09:35,160 INFO L78 Accepts]: Start accepts. Automaton has 91153 states and 97209 transitions. Word has length 507 [2022-11-25 18:09:35,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:09:35,161 INFO L495 AbstractCegarLoop]: Abstraction has 91153 states and 97209 transitions. [2022-11-25 18:09:35,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:35,161 INFO L276 IsEmpty]: Start isEmpty. Operand 91153 states and 97209 transitions. [2022-11-25 18:09:35,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2022-11-25 18:09:35,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:09:35,183 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:09:35,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-25 18:09:35,184 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:09:35,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:35,184 INFO L85 PathProgramCache]: Analyzing trace with hash 18735335, now seen corresponding path program 1 times [2022-11-25 18:09:35,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:09:35,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984483653] [2022-11-25 18:09:35,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:09:35,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:09:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:36,503 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 488 proven. 56 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-11-25 18:09:36,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:09:36,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984483653] [2022-11-25 18:09:36,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984483653] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:09:36,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173488510] [2022-11-25 18:09:36,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:09:36,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:09:36,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bfef182-1684-4ba7-80b4-57b12434a970/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:36,507 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bfef182-1684-4ba7-80b4-57b12434a970/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:09:36,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bfef182-1684-4ba7-80b4-57b12434a970/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 18:09:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:36,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:09:36,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:09:36,957 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 223 proven. 0 refuted. 0 times theorem prover too weak. 566 trivial. 0 not checked. [2022-11-25 18:09:36,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:09:36,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173488510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:09:36,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:09:36,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2022-11-25 18:09:36,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364918383] [2022-11-25 18:09:36,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:09:36,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:09:36,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:09:36,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:09:36,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:09:36,965 INFO L87 Difference]: Start difference. First operand 91153 states and 97209 transitions. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:40,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:09:40,048 INFO L93 Difference]: Finished difference Result 92438 states and 98531 transitions. [2022-11-25 18:09:40,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:09:40,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 574 [2022-11-25 18:09:40,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:09:40,157 INFO L225 Difference]: With dead ends: 92438 [2022-11-25 18:09:40,157 INFO L226 Difference]: Without dead ends: 92011 [2022-11-25 18:09:40,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 574 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:09:40,185 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 416 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 1303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-25 18:09:40,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 287 Invalid, 1303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-25 18:09:40,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92011 states. [2022-11-25 18:09:41,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92011 to 91153. [2022-11-25 18:09:41,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91153 states, 91152 states have (on average 1.0659338248200807) internal successors, (97162), 91152 states have internal predecessors, (97162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:41,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91153 states to 91153 states and 97162 transitions. [2022-11-25 18:09:41,557 INFO L78 Accepts]: Start accepts. Automaton has 91153 states and 97162 transitions. Word has length 574 [2022-11-25 18:09:41,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:09:41,558 INFO L495 AbstractCegarLoop]: Abstraction has 91153 states and 97162 transitions. [2022-11-25 18:09:41,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:41,558 INFO L276 IsEmpty]: Start isEmpty. Operand 91153 states and 97162 transitions. [2022-11-25 18:09:41,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2022-11-25 18:09:41,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:09:41,834 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:09:41,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bfef182-1684-4ba7-80b4-57b12434a970/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 18:09:42,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bfef182-1684-4ba7-80b4-57b12434a970/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-25 18:09:42,036 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:09:42,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:42,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1727057822, now seen corresponding path program 1 times [2022-11-25 18:09:42,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:09:42,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464445852] [2022-11-25 18:09:42,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:09:42,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:09:42,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:42,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 847 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2022-11-25 18:09:42,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:09:42,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464445852] [2022-11-25 18:09:42,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464445852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:09:42,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:09:42,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:09:42,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550836986] [2022-11-25 18:09:42,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:09:42,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:09:42,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:09:42,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:09:42,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:09:42,769 INFO L87 Difference]: Start difference. First operand 91153 states and 97162 transitions. Second operand has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:48,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:09:48,500 INFO L93 Difference]: Finished difference Result 205288 states and 218825 transitions. [2022-11-25 18:09:48,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:09:48,504 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 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 598 [2022-11-25 18:09:48,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:09:48,643 INFO L225 Difference]: With dead ends: 205288 [2022-11-25 18:09:48,643 INFO L226 Difference]: Without dead ends: 114987 [2022-11-25 18:09:48,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:09:48,686 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 728 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 2260 mSolverCounterSat, 441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 2701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 2260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-25 18:09:48,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 183 Invalid, 2701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [441 Valid, 2260 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-25 18:09:48,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114987 states. [2022-11-25 18:09:50,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114987 to 107754. [2022-11-25 18:09:50,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107754 states, 107753 states have (on average 1.0635620353957662) internal successors, (114602), 107753 states have internal predecessors, (114602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:50,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107754 states to 107754 states and 114602 transitions. [2022-11-25 18:09:50,778 INFO L78 Accepts]: Start accepts. Automaton has 107754 states and 114602 transitions. Word has length 598 [2022-11-25 18:09:50,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:09:50,779 INFO L495 AbstractCegarLoop]: Abstraction has 107754 states and 114602 transitions. [2022-11-25 18:09:50,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:50,779 INFO L276 IsEmpty]: Start isEmpty. Operand 107754 states and 114602 transitions. [2022-11-25 18:09:50,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2022-11-25 18:09:50,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:09:50,796 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:09:50,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-25 18:09:50,796 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:09:50,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:50,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1593823497, now seen corresponding path program 1 times [2022-11-25 18:09:50,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:09:50,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789693734] [2022-11-25 18:09:50,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:09:50,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:09:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:51,950 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 530 proven. 72 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-25 18:09:51,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:09:51,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789693734] [2022-11-25 18:09:51,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789693734] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:09:51,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830298290] [2022-11-25 18:09:51,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:09:51,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:09:51,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bfef182-1684-4ba7-80b4-57b12434a970/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:51,958 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bfef182-1684-4ba7-80b4-57b12434a970/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:09:51,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bfef182-1684-4ba7-80b4-57b12434a970/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 18:09:52,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:52,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 18:09:52,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:09:52,964 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 382 proven. 56 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-11-25 18:09:52,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:09:53,309 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 438 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-11-25 18:09:53,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830298290] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 18:09:53,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:09:53,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 8 [2022-11-25 18:09:53,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327195395] [2022-11-25 18:09:53,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:09:53,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:09:53,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:09:53,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:09:53,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:09:53,315 INFO L87 Difference]: Start difference. First operand 107754 states and 114602 transitions. Second operand has 4 states, 4 states have (on average 115.75) internal successors, (463), 4 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:59,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:09:59,367 INFO L93 Difference]: Finished difference Result 232964 states and 248245 transitions. [2022-11-25 18:09:59,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:09:59,368 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 115.75) internal successors, (463), 4 states have internal predecessors, (463), 0 states have call successors, (0), 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 625 [2022-11-25 18:09:59,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:09:59,534 INFO L225 Difference]: With dead ends: 232964 [2022-11-25 18:09:59,534 INFO L226 Difference]: Without dead ends: 125212 [2022-11-25 18:09:59,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1253 GetRequests, 1246 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:09:59,579 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 944 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 2118 mSolverCounterSat, 609 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 2727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 609 IncrementalHoareTripleChecker+Valid, 2118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-25 18:09:59,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [944 Valid, 116 Invalid, 2727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [609 Valid, 2118 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-25 18:09:59,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125212 states. [2022-11-25 18:10:01,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125212 to 121789. [2022-11-25 18:10:01,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121789 states, 121788 states have (on average 1.067633921240188) internal successors, (130025), 121788 states have internal predecessors, (130025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:10:01,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121789 states to 121789 states and 130025 transitions. [2022-11-25 18:10:01,845 INFO L78 Accepts]: Start accepts. Automaton has 121789 states and 130025 transitions. Word has length 625 [2022-11-25 18:10:01,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:10:01,845 INFO L495 AbstractCegarLoop]: Abstraction has 121789 states and 130025 transitions. [2022-11-25 18:10:01,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 115.75) internal successors, (463), 4 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:10:01,846 INFO L276 IsEmpty]: Start isEmpty. Operand 121789 states and 130025 transitions. [2022-11-25 18:10:01,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2022-11-25 18:10:01,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:10:01,874 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:10:01,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bfef182-1684-4ba7-80b4-57b12434a970/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 18:10:02,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3bfef182-1684-4ba7-80b4-57b12434a970/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:10:02,081 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:10:02,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:10:02,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1367998462, now seen corresponding path program 1 times [2022-11-25 18:10:02,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:10:02,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003099922] [2022-11-25 18:10:02,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:10:02,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:10:02,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:10:03,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 633 proven. 0 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2022-11-25 18:10:03,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:10:03,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003099922] [2022-11-25 18:10:03,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003099922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:10:03,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:10:03,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:10:03,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790017680] [2022-11-25 18:10:03,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:10:03,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:10:03,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:10:03,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:10:03,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:10:03,304 INFO L87 Difference]: Start difference. First operand 121789 states and 130025 transitions. Second operand has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)