./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8 --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 d0915623dd1f4682f183de0ff6ce6338d2670547f36e90f5eb8f63b75b82ebb3 --- 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-2329fc7 [2022-12-13 18:48:39,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:48:39,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:48:39,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:48:39,658 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:48:39,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:48:39,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:48:39,661 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:48:39,662 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:48:39,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:48:39,664 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:48:39,664 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:48:39,665 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:48:39,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:48:39,666 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:48:39,667 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:48:39,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:48:39,668 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:48:39,670 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:48:39,671 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:48:39,672 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:48:39,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:48:39,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:48:39,674 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:48:39,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:48:39,677 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:48:39,677 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:48:39,678 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:48:39,678 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:48:39,679 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:48:39,679 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:48:39,680 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:48:39,680 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:48:39,681 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:48:39,681 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:48:39,681 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:48:39,682 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:48:39,682 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:48:39,682 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:48:39,683 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:48:39,683 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:48:39,684 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 18:48:39,698 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:48:39,698 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:48:39,699 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:48:39,699 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:48:39,699 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:48:39,699 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:48:39,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:48:39,700 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:48:39,700 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:48:39,700 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:48:39,701 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:48:39,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:48:39,701 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:48:39,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:48:39,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 18:48:39,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:48:39,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 18:48:39,702 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:48:39,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 18:48:39,702 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:48:39,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 18:48:39,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:48:39,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:48:39,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:48:39,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:48:39,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:48:39,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:48:39,703 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 18:48:39,703 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:48:39,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:48:39,704 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:48:39,704 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 18:48:39,704 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:48:39,704 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:48:39,704 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:48:39,704 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_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d0915623dd1f4682f183de0ff6ce6338d2670547f36e90f5eb8f63b75b82ebb3 [2022-12-13 18:48:39,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:48:39,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:48:39,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:48:39,894 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:48:39,895 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:48:39,896 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label05.c [2022-12-13 18:48:42,502 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:48:42,842 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:48:42,842 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label05.c [2022-12-13 18:48:42,876 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/data/df02401c8/1834c2e6396d4df0aecac94bcedd47e5/FLAG72f1378cb [2022-12-13 18:48:42,890 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/data/df02401c8/1834c2e6396d4df0aecac94bcedd47e5 [2022-12-13 18:48:42,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:48:42,894 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:48:42,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:48:42,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:48:42,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:48:42,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:48:42" (1/1) ... [2022-12-13 18:48:42,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e3690b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:48:42, skipping insertion in model container [2022-12-13 18:48:42,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:48:42" (1/1) ... [2022-12-13 18:48:42,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:48:43,014 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:48:43,315 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_aa22fa71-08ce-4da1-932a-ce56526bb6ba/sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label05.c[15547,15560] [2022-12-13 18:48:43,354 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_aa22fa71-08ce-4da1-932a-ce56526bb6ba/sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label05.c[22483,22496] [2022-12-13 18:48:43,865 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:48:43,874 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:48:43,896 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_aa22fa71-08ce-4da1-932a-ce56526bb6ba/sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label05.c[15547,15560] [2022-12-13 18:48:43,903 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_aa22fa71-08ce-4da1-932a-ce56526bb6ba/sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label05.c[22483,22496] [2022-12-13 18:48:44,253 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:48:44,269 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:48:44,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:48:44 WrapperNode [2022-12-13 18:48:44,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:48:44,270 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:48:44,270 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:48:44,271 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:48:44,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:48:44" (1/1) ... [2022-12-13 18:48:44,314 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:48:44" (1/1) ... [2022-12-13 18:48:44,544 INFO L138 Inliner]: procedures = 38, calls = 23, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 5124 [2022-12-13 18:48:44,544 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:48:44,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:48:44,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:48:44,545 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:48:44,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:48:44" (1/1) ... [2022-12-13 18:48:44,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:48:44" (1/1) ... [2022-12-13 18:48:44,587 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:48:44" (1/1) ... [2022-12-13 18:48:44,587 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:48:44" (1/1) ... [2022-12-13 18:48:44,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:48:44" (1/1) ... [2022-12-13 18:48:44,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:48:44" (1/1) ... [2022-12-13 18:48:44,734 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:48:44" (1/1) ... [2022-12-13 18:48:44,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:48:44" (1/1) ... [2022-12-13 18:48:44,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:48:44,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:48:44,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:48:44,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:48:44,828 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:48:44" (1/1) ... [2022-12-13 18:48:44,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:48:44,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:48:44,856 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:48:44,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:48:44,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:48:44,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:48:44,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:48:44,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:48:44,970 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:48:44,972 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:48:48,361 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:48:48,373 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:48:48,374 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 18:48:48,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:48:48 BoogieIcfgContainer [2022-12-13 18:48:48,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:48:48,379 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:48:48,379 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:48:48,382 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:48:48,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:48:42" (1/3) ... [2022-12-13 18:48:48,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c92a14e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:48:48, skipping insertion in model container [2022-12-13 18:48:48,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:48:44" (2/3) ... [2022-12-13 18:48:48,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c92a14e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:48:48, skipping insertion in model container [2022-12-13 18:48:48,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:48:48" (3/3) ... [2022-12-13 18:48:48,385 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label05.c [2022-12-13 18:48:48,402 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:48:48,402 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 18:48:48,455 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:48:48,460 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;@39ec5513, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:48:48,460 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 18:48:48,466 INFO L276 IsEmpty]: Start isEmpty. Operand has 916 states, 913 states have (on average 1.9036144578313252) internal successors, (1738), 915 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:48,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-13 18:48:48,471 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:48:48,472 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] [2022-12-13 18:48:48,472 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:48:48,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:48:48,476 INFO L85 PathProgramCache]: Analyzing trace with hash -2028897015, now seen corresponding path program 1 times [2022-12-13 18:48:48,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:48:48,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35894895] [2022-12-13 18:48:48,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:48:48,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:48:48,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:48:48,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:48:48,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:48:48,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35894895] [2022-12-13 18:48:48,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35894895] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:48:48,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:48:48,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:48:48,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935315730] [2022-12-13 18:48:48,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:48:48,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 18:48:48,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:48:48,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 18:48:48,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 18:48:48,669 INFO L87 Difference]: Start difference. First operand has 916 states, 913 states have (on average 1.9036144578313252) internal successors, (1738), 915 states have internal predecessors, (1738), 0 states have call successors, (0), 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 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:48,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:48:48,736 INFO L93 Difference]: Finished difference Result 1784 states and 3386 transitions. [2022-12-13 18:48:48,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 18:48:48,738 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-12-13 18:48:48,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:48:48,753 INFO L225 Difference]: With dead ends: 1784 [2022-12-13 18:48:48,753 INFO L226 Difference]: Without dead ends: 850 [2022-12-13 18:48:48,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 18:48:48,761 INFO L413 NwaCegarLoop]: 1669 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:48:48,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1669 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:48:48,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2022-12-13 18:48:48,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 850. [2022-12-13 18:48:48,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 848 states have (on average 1.892688679245283) internal successors, (1605), 849 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:48,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1605 transitions. [2022-12-13 18:48:48,814 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1605 transitions. Word has length 26 [2022-12-13 18:48:48,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:48:48,814 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1605 transitions. [2022-12-13 18:48:48,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:48,815 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1605 transitions. [2022-12-13 18:48:48,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-13 18:48:48,815 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:48:48,815 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] [2022-12-13 18:48:48,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:48:48,816 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:48:48,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:48:48,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1448421831, now seen corresponding path program 1 times [2022-12-13 18:48:48,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:48:48,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424337174] [2022-12-13 18:48:48,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:48:48,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:48:48,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:48:48,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:48:48,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:48:48,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424337174] [2022-12-13 18:48:48,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424337174] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:48:48,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:48:48,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 18:48:48,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610847697] [2022-12-13 18:48:48,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:48:48,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:48:48,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:48:48,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:48:48,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:48:48,972 INFO L87 Difference]: Start difference. First operand 850 states and 1605 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:49,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:48:49,108 INFO L93 Difference]: Finished difference Result 904 states and 1689 transitions. [2022-12-13 18:48:49,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:48:49,109 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-12-13 18:48:49,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:48:49,113 INFO L225 Difference]: With dead ends: 904 [2022-12-13 18:48:49,113 INFO L226 Difference]: Without dead ends: 850 [2022-12-13 18:48:49,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:48:49,115 INFO L413 NwaCegarLoop]: 1603 mSDtfsCounter, 3 mSDsluCounter, 4766 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6369 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:48:49,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6369 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:48:49,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2022-12-13 18:48:49,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 850. [2022-12-13 18:48:49,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 848 states have (on average 1.8455188679245282) internal successors, (1565), 849 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:49,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1565 transitions. [2022-12-13 18:48:49,145 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1565 transitions. Word has length 26 [2022-12-13 18:48:49,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:48:49,145 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1565 transitions. [2022-12-13 18:48:49,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:49,146 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1565 transitions. [2022-12-13 18:48:49,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-13 18:48:49,147 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:48:49,147 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:48:49,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 18:48:49,148 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:48:49,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:48:49,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1160737563, now seen corresponding path program 1 times [2022-12-13 18:48:49,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:48:49,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089061248] [2022-12-13 18:48:49,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:48:49,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:48:49,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:48:49,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:48:49,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:48:49,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089061248] [2022-12-13 18:48:49,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089061248] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:48:49,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:48:49,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:48:49,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238165873] [2022-12-13 18:48:49,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:48:49,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:48:49,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:48:49,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:48:49,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:48:49,337 INFO L87 Difference]: Start difference. First operand 850 states and 1565 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:54,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:48:54,837 INFO L93 Difference]: Finished difference Result 3105 states and 5874 transitions. [2022-12-13 18:48:54,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:48:54,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-12-13 18:48:54,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:48:54,842 INFO L225 Difference]: With dead ends: 3105 [2022-12-13 18:48:54,842 INFO L226 Difference]: Without dead ends: 2352 [2022-12-13 18:48:54,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:48:54,844 INFO L413 NwaCegarLoop]: 801 mSDtfsCounter, 2445 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2445 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 6507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-12-13 18:48:54,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2445 Valid, 819 Invalid, 6507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-12-13 18:48:54,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2022-12-13 18:48:54,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 2352. [2022-12-13 18:48:54,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2352 states, 2350 states have (on average 1.565531914893617) internal successors, (3679), 2351 states have internal predecessors, (3679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:54,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2352 states to 2352 states and 3679 transitions. [2022-12-13 18:48:54,888 INFO L78 Accepts]: Start accepts. Automaton has 2352 states and 3679 transitions. Word has length 60 [2022-12-13 18:48:54,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:48:54,888 INFO L495 AbstractCegarLoop]: Abstraction has 2352 states and 3679 transitions. [2022-12-13 18:48:54,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:54,888 INFO L276 IsEmpty]: Start isEmpty. Operand 2352 states and 3679 transitions. [2022-12-13 18:48:54,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 18:48:54,890 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:48:54,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:48:54,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 18:48:54,891 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:48:54,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:48:54,891 INFO L85 PathProgramCache]: Analyzing trace with hash -295358701, now seen corresponding path program 1 times [2022-12-13 18:48:54,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:48:54,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362289067] [2022-12-13 18:48:54,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:48:54,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:48:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:48:55,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:48:55,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:48:55,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362289067] [2022-12-13 18:48:55,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362289067] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:48:55,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:48:55,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 18:48:55,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305843813] [2022-12-13 18:48:55,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:48:55,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 18:48:55,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:48:55,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 18:48:55,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:48:55,045 INFO L87 Difference]: Start difference. First operand 2352 states and 3679 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:55,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:48:55,270 INFO L93 Difference]: Finished difference Result 2952 states and 4639 transitions. [2022-12-13 18:48:55,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 18:48:55,271 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-12-13 18:48:55,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:48:55,276 INFO L225 Difference]: With dead ends: 2952 [2022-12-13 18:48:55,277 INFO L226 Difference]: Without dead ends: 2902 [2022-12-13 18:48:55,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2022-12-13 18:48:55,279 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 9855 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9855 SdHoareTripleChecker+Valid, 3085 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:48:55,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9855 Valid, 3085 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:48:55,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2902 states. [2022-12-13 18:48:55,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2902 to 2400. [2022-12-13 18:48:55,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2400 states, 2398 states have (on average 1.5663052543786489) internal successors, (3756), 2399 states have internal predecessors, (3756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:55,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2400 states to 2400 states and 3756 transitions. [2022-12-13 18:48:55,320 INFO L78 Accepts]: Start accepts. Automaton has 2400 states and 3756 transitions. Word has length 65 [2022-12-13 18:48:55,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:48:55,321 INFO L495 AbstractCegarLoop]: Abstraction has 2400 states and 3756 transitions. [2022-12-13 18:48:55,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:55,321 INFO L276 IsEmpty]: Start isEmpty. Operand 2400 states and 3756 transitions. [2022-12-13 18:48:55,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-13 18:48:55,322 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:48:55,322 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:48:55,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 18:48:55,322 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:48:55,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:48:55,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1787564125, now seen corresponding path program 1 times [2022-12-13 18:48:55,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:48:55,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136006495] [2022-12-13 18:48:55,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:48:55,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:48:55,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:48:55,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:48:55,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:48:55,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136006495] [2022-12-13 18:48:55,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136006495] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:48:55,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:48:55,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:48:55,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577854109] [2022-12-13 18:48:55,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:48:55,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:48:55,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:48:55,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:48:55,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:48:55,381 INFO L87 Difference]: Start difference. First operand 2400 states and 3756 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:55,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:48:55,424 INFO L93 Difference]: Finished difference Result 2585 states and 4051 transitions. [2022-12-13 18:48:55,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:48:55,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-12-13 18:48:55,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:48:55,430 INFO L225 Difference]: With dead ends: 2585 [2022-12-13 18:48:55,430 INFO L226 Difference]: Without dead ends: 2487 [2022-12-13 18:48:55,431 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 [2022-12-13 18:48:55,432 INFO L413 NwaCegarLoop]: 1561 mSDtfsCounter, 1492 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 1634 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:48:55,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 1634 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:48:55,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2487 states. [2022-12-13 18:48:55,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2487 to 2483. [2022-12-13 18:48:55,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2483 states, 2481 states have (on average 1.5663039097138252) internal successors, (3886), 2482 states have internal predecessors, (3886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:55,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2483 states to 2483 states and 3886 transitions. [2022-12-13 18:48:55,478 INFO L78 Accepts]: Start accepts. Automaton has 2483 states and 3886 transitions. Word has length 67 [2022-12-13 18:48:55,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:48:55,478 INFO L495 AbstractCegarLoop]: Abstraction has 2483 states and 3886 transitions. [2022-12-13 18:48:55,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:55,479 INFO L276 IsEmpty]: Start isEmpty. Operand 2483 states and 3886 transitions. [2022-12-13 18:48:55,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-13 18:48:55,480 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:48:55,480 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:48:55,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 18:48:55,480 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:48:55,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:48:55,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1721070613, now seen corresponding path program 1 times [2022-12-13 18:48:55,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:48:55,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532817752] [2022-12-13 18:48:55,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:48:55,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:48:55,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:48:55,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:48:55,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:48:55,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532817752] [2022-12-13 18:48:55,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532817752] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:48:55,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:48:55,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 18:48:55,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519384947] [2022-12-13 18:48:55,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:48:55,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 18:48:55,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:48:55,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 18:48:55,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:48:55,748 INFO L87 Difference]: Start difference. First operand 2483 states and 3886 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:55,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:48:55,921 INFO L93 Difference]: Finished difference Result 2666 states and 4174 transitions. [2022-12-13 18:48:55,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 18:48:55,921 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-12-13 18:48:55,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:48:55,926 INFO L225 Difference]: With dead ends: 2666 [2022-12-13 18:48:55,927 INFO L226 Difference]: Without dead ends: 2485 [2022-12-13 18:48:55,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-12-13 18:48:55,928 INFO L413 NwaCegarLoop]: 1557 mSDtfsCounter, 9010 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9010 SdHoareTripleChecker+Valid, 1940 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:48:55,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9010 Valid, 1940 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:48:55,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2485 states. [2022-12-13 18:48:55,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2485 to 2483. [2022-12-13 18:48:55,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2483 states, 2481 states have (on average 1.5654977831519548) internal successors, (3884), 2482 states have internal predecessors, (3884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:55,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2483 states to 2483 states and 3884 transitions. [2022-12-13 18:48:55,969 INFO L78 Accepts]: Start accepts. Automaton has 2483 states and 3884 transitions. Word has length 67 [2022-12-13 18:48:55,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:48:55,970 INFO L495 AbstractCegarLoop]: Abstraction has 2483 states and 3884 transitions. [2022-12-13 18:48:55,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:55,970 INFO L276 IsEmpty]: Start isEmpty. Operand 2483 states and 3884 transitions. [2022-12-13 18:48:55,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-13 18:48:55,970 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:48:55,971 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:48:55,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 18:48:55,971 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:48:55,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:48:55,971 INFO L85 PathProgramCache]: Analyzing trace with hash 2066662853, now seen corresponding path program 1 times [2022-12-13 18:48:55,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:48:55,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674989612] [2022-12-13 18:48:55,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:48:55,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:48:55,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:48:56,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:48:56,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:48:56,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674989612] [2022-12-13 18:48:56,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674989612] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:48:56,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:48:56,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 18:48:56,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266474928] [2022-12-13 18:48:56,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:48:56,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:48:56,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:48:56,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:48:56,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:48:56,099 INFO L87 Difference]: Start difference. First operand 2483 states and 3884 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:56,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:48:56,184 INFO L93 Difference]: Finished difference Result 2660 states and 4158 transitions. [2022-12-13 18:48:56,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:48:56,184 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-12-13 18:48:56,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:48:56,189 INFO L225 Difference]: With dead ends: 2660 [2022-12-13 18:48:56,189 INFO L226 Difference]: Without dead ends: 2658 [2022-12-13 18:48:56,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:48:56,191 INFO L413 NwaCegarLoop]: 1635 mSDtfsCounter, 211 mSDsluCounter, 4697 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 6332 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:48:56,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 6332 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:48:56,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2658 states. [2022-12-13 18:48:56,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2658 to 2489. [2022-12-13 18:48:56,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2489 states, 2487 states have (on average 1.5637314032971452) internal successors, (3889), 2488 states have internal predecessors, (3889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:56,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2489 states to 2489 states and 3889 transitions. [2022-12-13 18:48:56,233 INFO L78 Accepts]: Start accepts. Automaton has 2489 states and 3889 transitions. Word has length 68 [2022-12-13 18:48:56,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:48:56,233 INFO L495 AbstractCegarLoop]: Abstraction has 2489 states and 3889 transitions. [2022-12-13 18:48:56,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:56,233 INFO L276 IsEmpty]: Start isEmpty. Operand 2489 states and 3889 transitions. [2022-12-13 18:48:56,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-13 18:48:56,234 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:48:56,234 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:48:56,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 18:48:56,234 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:48:56,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:48:56,234 INFO L85 PathProgramCache]: Analyzing trace with hash 279342091, now seen corresponding path program 1 times [2022-12-13 18:48:56,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:48:56,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596789149] [2022-12-13 18:48:56,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:48:56,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:48:56,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:48:56,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:48:56,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:48:56,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596789149] [2022-12-13 18:48:56,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596789149] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:48:56,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:48:56,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:48:56,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91116323] [2022-12-13 18:48:56,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:48:56,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:48:56,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:48:56,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:48:56,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:48:56,291 INFO L87 Difference]: Start difference. First operand 2489 states and 3889 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:56,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:48:56,341 INFO L93 Difference]: Finished difference Result 2847 states and 4441 transitions. [2022-12-13 18:48:56,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:48:56,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-12-13 18:48:56,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:48:56,346 INFO L225 Difference]: With dead ends: 2847 [2022-12-13 18:48:56,346 INFO L226 Difference]: Without dead ends: 2660 [2022-12-13 18:48:56,347 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 [2022-12-13 18:48:56,347 INFO L413 NwaCegarLoop]: 1612 mSDtfsCounter, 1505 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:48:56,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1505 Valid, 1701 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:48:56,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2022-12-13 18:48:56,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 2658. [2022-12-13 18:48:56,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2658 states, 2656 states have (on average 1.5609939759036144) internal successors, (4146), 2657 states have internal predecessors, (4146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:56,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2658 states to 2658 states and 4146 transitions. [2022-12-13 18:48:56,402 INFO L78 Accepts]: Start accepts. Automaton has 2658 states and 4146 transitions. Word has length 69 [2022-12-13 18:48:56,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:48:56,402 INFO L495 AbstractCegarLoop]: Abstraction has 2658 states and 4146 transitions. [2022-12-13 18:48:56,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:56,403 INFO L276 IsEmpty]: Start isEmpty. Operand 2658 states and 4146 transitions. [2022-12-13 18:48:56,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-13 18:48:56,403 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:48:56,403 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:48:56,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 18:48:56,403 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:48:56,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:48:56,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1517604107, now seen corresponding path program 1 times [2022-12-13 18:48:56,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:48:56,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115632250] [2022-12-13 18:48:56,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:48:56,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:48:56,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:48:56,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:48:56,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:48:56,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115632250] [2022-12-13 18:48:56,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115632250] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:48:56,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:48:56,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:48:56,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847949575] [2022-12-13 18:48:56,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:48:56,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:48:56,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:48:56,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:48:56,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:48:56,442 INFO L87 Difference]: Start difference. First operand 2658 states and 4146 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:56,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:48:56,528 INFO L93 Difference]: Finished difference Result 3338 states and 5184 transitions. [2022-12-13 18:48:56,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:48:56,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-12-13 18:48:56,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:48:56,534 INFO L225 Difference]: With dead ends: 3338 [2022-12-13 18:48:56,534 INFO L226 Difference]: Without dead ends: 2982 [2022-12-13 18:48:56,535 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 [2022-12-13 18:48:56,536 INFO L413 NwaCegarLoop]: 1610 mSDtfsCounter, 1503 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 1703 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:48:56,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1503 Valid, 1703 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:48:56,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2982 states. [2022-12-13 18:48:56,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2982 to 2980. [2022-12-13 18:48:56,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2980 states, 2978 states have (on average 1.5540631296171927) internal successors, (4628), 2979 states have internal predecessors, (4628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:56,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2980 states to 2980 states and 4628 transitions. [2022-12-13 18:48:56,617 INFO L78 Accepts]: Start accepts. Automaton has 2980 states and 4628 transitions. Word has length 69 [2022-12-13 18:48:56,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:48:56,617 INFO L495 AbstractCegarLoop]: Abstraction has 2980 states and 4628 transitions. [2022-12-13 18:48:56,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:56,617 INFO L276 IsEmpty]: Start isEmpty. Operand 2980 states and 4628 transitions. [2022-12-13 18:48:56,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-13 18:48:56,618 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:48:56,618 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:48:56,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 18:48:56,618 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:48:56,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:48:56,618 INFO L85 PathProgramCache]: Analyzing trace with hash -697864693, now seen corresponding path program 1 times [2022-12-13 18:48:56,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:48:56,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007380773] [2022-12-13 18:48:56,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:48:56,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:48:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:48:56,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:48:56,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:48:56,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007380773] [2022-12-13 18:48:56,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007380773] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:48:56,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:48:56,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:48:56,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982268525] [2022-12-13 18:48:56,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:48:56,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:48:56,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:48:56,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:48:56,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:48:56,653 INFO L87 Difference]: Start difference. First operand 2980 states and 4628 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:56,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:48:56,847 INFO L93 Difference]: Finished difference Result 4272 states and 6574 transitions. [2022-12-13 18:48:56,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:48:56,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-12-13 18:48:56,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:48:56,855 INFO L225 Difference]: With dead ends: 4272 [2022-12-13 18:48:56,855 INFO L226 Difference]: Without dead ends: 3594 [2022-12-13 18:48:56,856 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 [2022-12-13 18:48:56,857 INFO L413 NwaCegarLoop]: 1608 mSDtfsCounter, 1501 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1501 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:48:56,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1501 Valid, 1705 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:48:56,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3594 states. [2022-12-13 18:48:56,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3594 to 3592. [2022-12-13 18:48:56,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3592 states, 3590 states have (on average 1.5398328690807799) internal successors, (5528), 3591 states have internal predecessors, (5528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:56,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3592 states to 3592 states and 5528 transitions. [2022-12-13 18:48:56,992 INFO L78 Accepts]: Start accepts. Automaton has 3592 states and 5528 transitions. Word has length 69 [2022-12-13 18:48:56,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:48:56,992 INFO L495 AbstractCegarLoop]: Abstraction has 3592 states and 5528 transitions. [2022-12-13 18:48:56,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:56,992 INFO L276 IsEmpty]: Start isEmpty. Operand 3592 states and 5528 transitions. [2022-12-13 18:48:56,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-13 18:48:56,992 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:48:56,993 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:48:56,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 18:48:56,993 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:48:56,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:48:56,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1083068171, now seen corresponding path program 1 times [2022-12-13 18:48:56,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:48:56,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311320326] [2022-12-13 18:48:56,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:48:56,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:48:57,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:48:57,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:48:57,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:48:57,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311320326] [2022-12-13 18:48:57,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311320326] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:48:57,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:48:57,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:48:57,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777888187] [2022-12-13 18:48:57,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:48:57,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:48:57,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:48:57,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:48:57,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:48:57,026 INFO L87 Difference]: Start difference. First operand 3592 states and 5528 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:57,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:48:57,245 INFO L93 Difference]: Finished difference Result 6044 states and 9162 transitions. [2022-12-13 18:48:57,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:48:57,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-12-13 18:48:57,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:48:57,255 INFO L225 Difference]: With dead ends: 6044 [2022-12-13 18:48:57,255 INFO L226 Difference]: Without dead ends: 4754 [2022-12-13 18:48:57,256 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 [2022-12-13 18:48:57,257 INFO L413 NwaCegarLoop]: 1606 mSDtfsCounter, 1499 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 1707 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:48:57,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1499 Valid, 1707 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:48:57,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4754 states. [2022-12-13 18:48:57,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4754 to 4752. [2022-12-13 18:48:57,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4752 states, 4750 states have (on average 1.5157894736842106) internal successors, (7200), 4751 states have internal predecessors, (7200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:57,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4752 states to 4752 states and 7200 transitions. [2022-12-13 18:48:57,497 INFO L78 Accepts]: Start accepts. Automaton has 4752 states and 7200 transitions. Word has length 69 [2022-12-13 18:48:57,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:48:57,497 INFO L495 AbstractCegarLoop]: Abstraction has 4752 states and 7200 transitions. [2022-12-13 18:48:57,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:57,497 INFO L276 IsEmpty]: Start isEmpty. Operand 4752 states and 7200 transitions. [2022-12-13 18:48:57,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-13 18:48:57,497 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:48:57,498 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:48:57,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 18:48:57,498 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:48:57,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:48:57,498 INFO L85 PathProgramCache]: Analyzing trace with hash 15485707, now seen corresponding path program 1 times [2022-12-13 18:48:57,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:48:57,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089419974] [2022-12-13 18:48:57,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:48:57,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:48:57,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:48:57,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:48:57,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:48:57,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089419974] [2022-12-13 18:48:57,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089419974] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:48:57,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:48:57,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:48:57,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094509954] [2022-12-13 18:48:57,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:48:57,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:48:57,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:48:57,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:48:57,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:48:57,532 INFO L87 Difference]: Start difference. First operand 4752 states and 7200 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:57,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:48:57,991 INFO L93 Difference]: Finished difference Result 9396 states and 13954 transitions. [2022-12-13 18:48:57,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:48:57,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-12-13 18:48:57,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:48:58,001 INFO L225 Difference]: With dead ends: 9396 [2022-12-13 18:48:58,001 INFO L226 Difference]: Without dead ends: 6946 [2022-12-13 18:48:58,004 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 [2022-12-13 18:48:58,004 INFO L413 NwaCegarLoop]: 1622 mSDtfsCounter, 1507 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1707 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:48:58,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 1707 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:48:58,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6946 states. [2022-12-13 18:48:58,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6946 to 6944. [2022-12-13 18:48:58,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6944 states, 6942 states have (on average 1.4819936617689426) internal successors, (10288), 6943 states have internal predecessors, (10288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:58,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6944 states to 6944 states and 10288 transitions. [2022-12-13 18:48:58,437 INFO L78 Accepts]: Start accepts. Automaton has 6944 states and 10288 transitions. Word has length 69 [2022-12-13 18:48:58,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:48:58,437 INFO L495 AbstractCegarLoop]: Abstraction has 6944 states and 10288 transitions. [2022-12-13 18:48:58,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:58,438 INFO L276 IsEmpty]: Start isEmpty. Operand 6944 states and 10288 transitions. [2022-12-13 18:48:58,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-13 18:48:58,438 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:48:58,438 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:48:58,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 18:48:58,439 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:48:58,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:48:58,439 INFO L85 PathProgramCache]: Analyzing trace with hash -2036636858, now seen corresponding path program 1 times [2022-12-13 18:48:58,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:48:58,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928864498] [2022-12-13 18:48:58,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:48:58,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:48:58,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:48:58,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:48:58,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:48:58,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928864498] [2022-12-13 18:48:58,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928864498] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:48:58,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:48:58,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:48:58,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949204720] [2022-12-13 18:48:58,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:48:58,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:48:58,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:48:58,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:48:58,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:48:58,482 INFO L87 Difference]: Start difference. First operand 6944 states and 10288 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:59,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:48:59,178 INFO L93 Difference]: Finished difference Result 11815 states and 17398 transitions. [2022-12-13 18:48:59,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:48:59,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-12-13 18:48:59,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:48:59,189 INFO L225 Difference]: With dead ends: 11815 [2022-12-13 18:48:59,189 INFO L226 Difference]: Without dead ends: 9188 [2022-12-13 18:48:59,192 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 [2022-12-13 18:48:59,193 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 1506 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:48:59,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1506 Valid, 1708 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:48:59,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9188 states. [2022-12-13 18:48:59,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9188 to 9186. [2022-12-13 18:48:59,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9186 states, 9184 states have (on average 1.4653745644599303) internal successors, (13458), 9185 states have internal predecessors, (13458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:59,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9186 states to 9186 states and 13458 transitions. [2022-12-13 18:48:59,875 INFO L78 Accepts]: Start accepts. Automaton has 9186 states and 13458 transitions. Word has length 71 [2022-12-13 18:48:59,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:48:59,875 INFO L495 AbstractCegarLoop]: Abstraction has 9186 states and 13458 transitions. [2022-12-13 18:48:59,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:48:59,875 INFO L276 IsEmpty]: Start isEmpty. Operand 9186 states and 13458 transitions. [2022-12-13 18:48:59,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 18:48:59,877 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:48:59,877 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 18:48:59,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 18:48:59,877 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:48:59,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:48:59,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1790597010, now seen corresponding path program 1 times [2022-12-13 18:48:59,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:48:59,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072916698] [2022-12-13 18:48:59,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:48:59,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:48:59,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:48:59,990 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 18:48:59,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:48:59,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072916698] [2022-12-13 18:48:59,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072916698] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:48:59,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:48:59,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 18:48:59,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054345639] [2022-12-13 18:48:59,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:48:59,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 18:48:59,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:48:59,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 18:48:59,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:48:59,992 INFO L87 Difference]: Start difference. First operand 9186 states and 13458 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:49:04,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:49:04,432 INFO L93 Difference]: Finished difference Result 51920 states and 74585 transitions. [2022-12-13 18:49:04,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 18:49:04,433 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 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 90 [2022-12-13 18:49:04,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:49:04,485 INFO L225 Difference]: With dead ends: 51920 [2022-12-13 18:49:04,485 INFO L226 Difference]: Without dead ends: 45038 [2022-12-13 18:49:04,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 18:49:04,497 INFO L413 NwaCegarLoop]: 1642 mSDtfsCounter, 8109 mSDsluCounter, 2226 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8109 SdHoareTripleChecker+Valid, 3868 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:49:04,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8109 Valid, 3868 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:49:04,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45038 states. [2022-12-13 18:49:06,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45038 to 16066. [2022-12-13 18:49:06,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16066 states, 16064 states have (on average 1.4453436254980079) internal successors, (23218), 16065 states have internal predecessors, (23218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:49:06,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16066 states to 16066 states and 23218 transitions. [2022-12-13 18:49:06,292 INFO L78 Accepts]: Start accepts. Automaton has 16066 states and 23218 transitions. Word has length 90 [2022-12-13 18:49:06,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:49:06,292 INFO L495 AbstractCegarLoop]: Abstraction has 16066 states and 23218 transitions. [2022-12-13 18:49:06,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:49:06,292 INFO L276 IsEmpty]: Start isEmpty. Operand 16066 states and 23218 transitions. [2022-12-13 18:49:06,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 18:49:06,294 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:49:06,294 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 18:49:06,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 18:49:06,295 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:49:06,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:49:06,295 INFO L85 PathProgramCache]: Analyzing trace with hash -552334994, now seen corresponding path program 1 times [2022-12-13 18:49:06,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:49:06,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800482023] [2022-12-13 18:49:06,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:49:06,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:49:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:49:06,404 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 18:49:06,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:49:06,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800482023] [2022-12-13 18:49:06,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800482023] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:49:06,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:49:06,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 18:49:06,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183880225] [2022-12-13 18:49:06,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:49:06,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 18:49:06,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:49:06,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 18:49:06,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:49:06,406 INFO L87 Difference]: Start difference. First operand 16066 states and 23218 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:49:12,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:49:12,576 INFO L93 Difference]: Finished difference Result 58800 states and 84345 transitions. [2022-12-13 18:49:12,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 18:49:12,577 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 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 90 [2022-12-13 18:49:12,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:49:12,642 INFO L225 Difference]: With dead ends: 58800 [2022-12-13 18:49:12,642 INFO L226 Difference]: Without dead ends: 51918 [2022-12-13 18:49:12,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 18:49:12,654 INFO L413 NwaCegarLoop]: 1639 mSDtfsCounter, 8158 mSDsluCounter, 2154 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8158 SdHoareTripleChecker+Valid, 3793 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:49:12,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8158 Valid, 3793 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:49:12,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51918 states. [2022-12-13 18:49:15,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51918 to 26402. [2022-12-13 18:49:15,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26402 states, 26400 states have (on average 1.4309848484848484) internal successors, (37778), 26401 states have internal predecessors, (37778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:49:15,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26402 states to 26402 states and 37778 transitions. [2022-12-13 18:49:15,770 INFO L78 Accepts]: Start accepts. Automaton has 26402 states and 37778 transitions. Word has length 90 [2022-12-13 18:49:15,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:49:15,771 INFO L495 AbstractCegarLoop]: Abstraction has 26402 states and 37778 transitions. [2022-12-13 18:49:15,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:49:15,771 INFO L276 IsEmpty]: Start isEmpty. Operand 26402 states and 37778 transitions. [2022-12-13 18:49:15,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 18:49:15,773 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:49:15,773 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 18:49:15,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 18:49:15,773 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:49:15,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:49:15,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1527163502, now seen corresponding path program 1 times [2022-12-13 18:49:15,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:49:15,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093109014] [2022-12-13 18:49:15,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:49:15,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:49:15,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:49:15,881 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 18:49:15,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:49:15,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093109014] [2022-12-13 18:49:15,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093109014] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:49:15,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:49:15,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 18:49:15,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177154193] [2022-12-13 18:49:15,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:49:15,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 18:49:15,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:49:15,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 18:49:15,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:49:15,883 INFO L87 Difference]: Start difference. First operand 26402 states and 37778 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:49:23,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:49:23,124 INFO L93 Difference]: Finished difference Result 65680 states and 94105 transitions. [2022-12-13 18:49:23,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 18:49:23,125 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 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 90 [2022-12-13 18:49:23,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:49:23,194 INFO L225 Difference]: With dead ends: 65680 [2022-12-13 18:49:23,194 INFO L226 Difference]: Without dead ends: 58798 [2022-12-13 18:49:23,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 18:49:23,209 INFO L413 NwaCegarLoop]: 1636 mSDtfsCounter, 8204 mSDsluCounter, 2182 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8204 SdHoareTripleChecker+Valid, 3818 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:49:23,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8204 Valid, 3818 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:49:23,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58798 states. [2022-12-13 18:49:27,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58798 to 33282. [2022-12-13 18:49:27,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33282 states, 33280 states have (on average 1.4284254807692307) internal successors, (47538), 33281 states have internal predecessors, (47538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:49:27,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33282 states to 33282 states and 47538 transitions. [2022-12-13 18:49:27,627 INFO L78 Accepts]: Start accepts. Automaton has 33282 states and 47538 transitions. Word has length 90 [2022-12-13 18:49:27,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:49:27,627 INFO L495 AbstractCegarLoop]: Abstraction has 33282 states and 47538 transitions. [2022-12-13 18:49:27,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:49:27,628 INFO L276 IsEmpty]: Start isEmpty. Operand 33282 states and 47538 transitions. [2022-12-13 18:49:27,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 18:49:27,630 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:49:27,630 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 18:49:27,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 18:49:27,630 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:49:27,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:49:27,631 INFO L85 PathProgramCache]: Analyzing trace with hash -986870930, now seen corresponding path program 1 times [2022-12-13 18:49:27,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:49:27,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193780896] [2022-12-13 18:49:27,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:49:27,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:49:27,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:49:27,736 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 18:49:27,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:49:27,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193780896] [2022-12-13 18:49:27,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193780896] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:49:27,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:49:27,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 18:49:27,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45965248] [2022-12-13 18:49:27,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:49:27,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 18:49:27,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:49:27,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 18:49:27,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:49:27,738 INFO L87 Difference]: Start difference. First operand 33282 states and 47538 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:49:35,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:49:35,813 INFO L93 Difference]: Finished difference Result 72560 states and 103865 transitions. [2022-12-13 18:49:35,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 18:49:35,814 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 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 90 [2022-12-13 18:49:35,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:49:35,888 INFO L225 Difference]: With dead ends: 72560 [2022-12-13 18:49:35,888 INFO L226 Difference]: Without dead ends: 65678 [2022-12-13 18:49:35,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 18:49:35,903 INFO L413 NwaCegarLoop]: 1641 mSDtfsCounter, 8112 mSDsluCounter, 2247 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8112 SdHoareTripleChecker+Valid, 3888 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:49:35,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8112 Valid, 3888 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:49:35,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65678 states. [2022-12-13 18:49:40,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65678 to 40162. [2022-12-13 18:49:40,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40162 states, 40160 states have (on average 1.4267430278884463) internal successors, (57298), 40161 states have internal predecessors, (57298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:49:41,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40162 states to 40162 states and 57298 transitions. [2022-12-13 18:49:41,032 INFO L78 Accepts]: Start accepts. Automaton has 40162 states and 57298 transitions. Word has length 90 [2022-12-13 18:49:41,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:49:41,032 INFO L495 AbstractCegarLoop]: Abstraction has 40162 states and 57298 transitions. [2022-12-13 18:49:41,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:49:41,032 INFO L276 IsEmpty]: Start isEmpty. Operand 40162 states and 57298 transitions. [2022-12-13 18:49:41,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 18:49:41,034 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:49:41,034 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 18:49:41,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 18:49:41,035 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:49:41,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:49:41,035 INFO L85 PathProgramCache]: Analyzing trace with hash -2054453394, now seen corresponding path program 1 times [2022-12-13 18:49:41,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:49:41,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406000107] [2022-12-13 18:49:41,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:49:41,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:49:41,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:49:41,129 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 18:49:41,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:49:41,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406000107] [2022-12-13 18:49:41,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406000107] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:49:41,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:49:41,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 18:49:41,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108847162] [2022-12-13 18:49:41,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:49:41,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 18:49:41,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:49:41,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 18:49:41,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:49:41,131 INFO L87 Difference]: Start difference. First operand 40162 states and 57298 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:49:51,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:49:51,159 INFO L93 Difference]: Finished difference Result 79440 states and 113625 transitions. [2022-12-13 18:49:51,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 18:49:51,160 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 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 90 [2022-12-13 18:49:51,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:49:51,253 INFO L225 Difference]: With dead ends: 79440 [2022-12-13 18:49:51,253 INFO L226 Difference]: Without dead ends: 72558 [2022-12-13 18:49:51,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 18:49:51,268 INFO L413 NwaCegarLoop]: 1642 mSDtfsCounter, 8044 mSDsluCounter, 2425 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8044 SdHoareTripleChecker+Valid, 4067 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:49:51,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8044 Valid, 4067 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:49:51,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72558 states. [2022-12-13 18:49:57,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72558 to 47042. [2022-12-13 18:49:57,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47042 states, 47040 states have (on average 1.4255527210884353) internal successors, (67058), 47041 states have internal predecessors, (67058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:49:57,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47042 states to 47042 states and 67058 transitions. [2022-12-13 18:49:57,851 INFO L78 Accepts]: Start accepts. Automaton has 47042 states and 67058 transitions. Word has length 90 [2022-12-13 18:49:57,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:49:57,851 INFO L495 AbstractCegarLoop]: Abstraction has 47042 states and 67058 transitions. [2022-12-13 18:49:57,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:49:57,852 INFO L276 IsEmpty]: Start isEmpty. Operand 47042 states and 67058 transitions. [2022-12-13 18:49:57,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-12-13 18:49:57,854 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:49:57,854 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 18:49:57,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 18:49:57,854 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:49:57,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:49:57,855 INFO L85 PathProgramCache]: Analyzing trace with hash 168958598, now seen corresponding path program 1 times [2022-12-13 18:49:57,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:49:57,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686222729] [2022-12-13 18:49:57,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:49:57,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:49:57,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:49:57,907 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:49:57,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:49:57,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686222729] [2022-12-13 18:49:57,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686222729] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:49:57,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:49:57,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:49:57,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915196018] [2022-12-13 18:49:57,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:49:57,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:49:57,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:49:57,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:49:57,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:49:57,909 INFO L87 Difference]: Start difference. First operand 47042 states and 67058 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:50:02,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:50:02,515 INFO L93 Difference]: Finished difference Result 78684 states and 112427 transitions. [2022-12-13 18:50:02,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:50:02,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2022-12-13 18:50:02,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:50:02,549 INFO L225 Difference]: With dead ends: 78684 [2022-12-13 18:50:02,549 INFO L226 Difference]: Without dead ends: 33946 [2022-12-13 18:50:02,568 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 [2022-12-13 18:50:02,569 INFO L413 NwaCegarLoop]: 1613 mSDtfsCounter, 58 mSDsluCounter, 1550 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 3163 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:50:02,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3163 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:50:02,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33946 states. [2022-12-13 18:50:07,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33946 to 33944. [2022-12-13 18:50:07,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33944 states, 33942 states have (on average 1.4304401626303695) internal successors, (48552), 33943 states have internal predecessors, (48552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:50:07,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33944 states to 33944 states and 48552 transitions. [2022-12-13 18:50:07,195 INFO L78 Accepts]: Start accepts. Automaton has 33944 states and 48552 transitions. Word has length 92 [2022-12-13 18:50:07,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:50:07,196 INFO L495 AbstractCegarLoop]: Abstraction has 33944 states and 48552 transitions. [2022-12-13 18:50:07,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:50:07,196 INFO L276 IsEmpty]: Start isEmpty. Operand 33944 states and 48552 transitions. [2022-12-13 18:50:07,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-12-13 18:50:07,197 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:50:07,197 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 18:50:07,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 18:50:07,197 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:50:07,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:50:07,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1616712425, now seen corresponding path program 1 times [2022-12-13 18:50:07,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:50:07,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263695748] [2022-12-13 18:50:07,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:50:07,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:50:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:50:07,282 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 18:50:07,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:50:07,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263695748] [2022-12-13 18:50:07,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263695748] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:50:07,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:50:07,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 18:50:07,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879873241] [2022-12-13 18:50:07,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:50:07,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 18:50:07,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:50:07,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 18:50:07,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:50:07,284 INFO L87 Difference]: Start difference. First operand 33944 states and 48552 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:50:16,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:50:16,508 INFO L93 Difference]: Finished difference Result 63142 states and 90415 transitions. [2022-12-13 18:50:16,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 18:50:16,509 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 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 92 [2022-12-13 18:50:16,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:50:16,571 INFO L225 Difference]: With dead ends: 63142 [2022-12-13 18:50:16,571 INFO L226 Difference]: Without dead ends: 58276 [2022-12-13 18:50:16,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 18:50:16,584 INFO L413 NwaCegarLoop]: 1633 mSDtfsCounter, 8058 mSDsluCounter, 2351 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8058 SdHoareTripleChecker+Valid, 3984 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:50:16,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8058 Valid, 3984 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:50:16,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58276 states. [2022-12-13 18:50:22,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58276 to 38808. [2022-12-13 18:50:22,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38808 states, 38806 states have (on average 1.4292635159511415) internal successors, (55464), 38807 states have internal predecessors, (55464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:50:22,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38808 states to 38808 states and 55464 transitions. [2022-12-13 18:50:22,519 INFO L78 Accepts]: Start accepts. Automaton has 38808 states and 55464 transitions. Word has length 92 [2022-12-13 18:50:22,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:50:22,520 INFO L495 AbstractCegarLoop]: Abstraction has 38808 states and 55464 transitions. [2022-12-13 18:50:22,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:50:22,520 INFO L276 IsEmpty]: Start isEmpty. Operand 38808 states and 55464 transitions. [2022-12-13 18:50:22,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-13 18:50:22,521 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:50:22,521 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 18:50:22,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 18:50:22,522 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:50:22,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:50:22,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1117757048, now seen corresponding path program 1 times [2022-12-13 18:50:22,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:50:22,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077673626] [2022-12-13 18:50:22,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:50:22,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:50:22,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:50:22,573 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:50:22,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:50:22,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077673626] [2022-12-13 18:50:22,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077673626] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:50:22,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:50:22,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:50:22,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174609283] [2022-12-13 18:50:22,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:50:22,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:50:22,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:50:22,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:50:22,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:50:22,574 INFO L87 Difference]: Start difference. First operand 38808 states and 55464 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:50:25,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:50:25,513 INFO L93 Difference]: Finished difference Result 57052 states and 81386 transitions. [2022-12-13 18:50:25,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:50:25,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-12-13 18:50:25,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:50:25,532 INFO L225 Difference]: With dead ends: 57052 [2022-12-13 18:50:25,532 INFO L226 Difference]: Without dead ends: 20570 [2022-12-13 18:50:25,552 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 [2022-12-13 18:50:25,552 INFO L413 NwaCegarLoop]: 1606 mSDtfsCounter, 53 mSDsluCounter, 1542 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 3148 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:50:25,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 3148 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:50:25,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20570 states. [2022-12-13 18:50:28,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20570 to 20568. [2022-12-13 18:50:28,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20568 states, 20566 states have (on average 1.4248760089468053) internal successors, (29304), 20567 states have internal predecessors, (29304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:50:28,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20568 states to 20568 states and 29304 transitions. [2022-12-13 18:50:28,564 INFO L78 Accepts]: Start accepts. Automaton has 20568 states and 29304 transitions. Word has length 93 [2022-12-13 18:50:28,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:50:28,564 INFO L495 AbstractCegarLoop]: Abstraction has 20568 states and 29304 transitions. [2022-12-13 18:50:28,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:50:28,565 INFO L276 IsEmpty]: Start isEmpty. Operand 20568 states and 29304 transitions. [2022-12-13 18:50:28,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-13 18:50:28,566 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:50:28,566 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 18:50:28,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 18:50:28,566 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:50:28,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:50:28,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1320571018, now seen corresponding path program 1 times [2022-12-13 18:50:28,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:50:28,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400181889] [2022-12-13 18:50:28,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:50:28,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:50:28,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:50:28,623 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:50:28,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:50:28,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400181889] [2022-12-13 18:50:28,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400181889] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:50:28,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:50:28,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:50:28,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222636805] [2022-12-13 18:50:28,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:50:28,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:50:28,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:50:28,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:50:28,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:50:28,625 INFO L87 Difference]: Start difference. First operand 20568 states and 29304 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:50:30,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:50:30,102 INFO L93 Difference]: Finished difference Result 29692 states and 42146 transitions. [2022-12-13 18:50:30,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:50:30,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2022-12-13 18:50:30,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:50:30,111 INFO L225 Difference]: With dead ends: 29692 [2022-12-13 18:50:30,112 INFO L226 Difference]: Without dead ends: 11450 [2022-12-13 18:50:30,120 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 [2022-12-13 18:50:30,121 INFO L413 NwaCegarLoop]: 1599 mSDtfsCounter, 50 mSDsluCounter, 1534 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 3133 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:50:30,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 3133 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:50:30,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11450 states. [2022-12-13 18:50:31,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11450 to 11448. [2022-12-13 18:50:31,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11448 states, 11446 states have (on average 1.427922418312074) internal successors, (16344), 11447 states have internal predecessors, (16344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:50:31,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11448 states to 11448 states and 16344 transitions. [2022-12-13 18:50:31,620 INFO L78 Accepts]: Start accepts. Automaton has 11448 states and 16344 transitions. Word has length 95 [2022-12-13 18:50:31,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:50:31,620 INFO L495 AbstractCegarLoop]: Abstraction has 11448 states and 16344 transitions. [2022-12-13 18:50:31,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:50:31,620 INFO L276 IsEmpty]: Start isEmpty. Operand 11448 states and 16344 transitions. [2022-12-13 18:50:31,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-12-13 18:50:31,621 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:50:31,621 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 18:50:31,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 18:50:31,621 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:50:31,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:50:31,622 INFO L85 PathProgramCache]: Analyzing trace with hash -969080548, now seen corresponding path program 1 times [2022-12-13 18:50:31,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:50:31,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180569347] [2022-12-13 18:50:31,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:50:31,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:50:31,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:50:31,671 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:50:31,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:50:31,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180569347] [2022-12-13 18:50:31,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180569347] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:50:31,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:50:31,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:50:31,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141739360] [2022-12-13 18:50:31,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:50:31,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:50:31,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:50:31,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:50:31,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:50:31,673 INFO L87 Difference]: Start difference. First operand 11448 states and 16344 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:50:32,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:50:32,444 INFO L93 Difference]: Finished difference Result 16012 states and 22706 transitions. [2022-12-13 18:50:32,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:50:32,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-12-13 18:50:32,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:50:32,450 INFO L225 Difference]: With dead ends: 16012 [2022-12-13 18:50:32,450 INFO L226 Difference]: Without dead ends: 6890 [2022-12-13 18:50:32,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:50:32,454 INFO L413 NwaCegarLoop]: 1592 mSDtfsCounter, 47 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 3118 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:50:32,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 3118 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:50:32,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6890 states. [2022-12-13 18:50:33,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6890 to 6888. [2022-12-13 18:50:33,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6888 states, 6886 states have (on average 1.441185013069997) internal successors, (9924), 6887 states have internal predecessors, (9924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:50:33,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6888 states to 6888 states and 9924 transitions. [2022-12-13 18:50:33,207 INFO L78 Accepts]: Start accepts. Automaton has 6888 states and 9924 transitions. Word has length 97 [2022-12-13 18:50:33,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:50:33,207 INFO L495 AbstractCegarLoop]: Abstraction has 6888 states and 9924 transitions. [2022-12-13 18:50:33,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:50:33,208 INFO L276 IsEmpty]: Start isEmpty. Operand 6888 states and 9924 transitions. [2022-12-13 18:50:33,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-12-13 18:50:33,208 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:50:33,208 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 18:50:33,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 18:50:33,209 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:50:33,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:50:33,209 INFO L85 PathProgramCache]: Analyzing trace with hash -83832786, now seen corresponding path program 1 times [2022-12-13 18:50:33,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:50:33,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197949844] [2022-12-13 18:50:33,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:50:33,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:50:33,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:50:33,257 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:50:33,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:50:33,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197949844] [2022-12-13 18:50:33,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197949844] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:50:33,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:50:33,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:50:33,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402319840] [2022-12-13 18:50:33,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:50:33,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:50:33,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:50:33,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:50:33,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:50:33,259 INFO L87 Difference]: Start difference. First operand 6888 states and 9924 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:50:33,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:50:33,655 INFO L93 Difference]: Finished difference Result 9172 states and 13076 transitions. [2022-12-13 18:50:33,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:50:33,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-12-13 18:50:33,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:50:33,659 INFO L225 Difference]: With dead ends: 9172 [2022-12-13 18:50:33,659 INFO L226 Difference]: Without dead ends: 4610 [2022-12-13 18:50:33,661 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 [2022-12-13 18:50:33,662 INFO L413 NwaCegarLoop]: 1585 mSDtfsCounter, 44 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3103 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:50:33,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 3103 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:50:33,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4610 states. [2022-12-13 18:50:34,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4610 to 4608. [2022-12-13 18:50:34,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4608 states, 4606 states have (on average 1.4641771602257925) internal successors, (6744), 4607 states have internal predecessors, (6744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:50:34,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4608 states to 4608 states and 6744 transitions. [2022-12-13 18:50:34,056 INFO L78 Accepts]: Start accepts. Automaton has 4608 states and 6744 transitions. Word has length 99 [2022-12-13 18:50:34,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:50:34,057 INFO L495 AbstractCegarLoop]: Abstraction has 4608 states and 6744 transitions. [2022-12-13 18:50:34,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:50:34,057 INFO L276 IsEmpty]: Start isEmpty. Operand 4608 states and 6744 transitions. [2022-12-13 18:50:34,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 18:50:34,057 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:50:34,058 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 18:50:34,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 18:50:34,058 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:50:34,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:50:34,058 INFO L85 PathProgramCache]: Analyzing trace with hash -709435968, now seen corresponding path program 1 times [2022-12-13 18:50:34,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:50:34,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442727574] [2022-12-13 18:50:34,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:50:34,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:50:34,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:50:34,109 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:50:34,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:50:34,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442727574] [2022-12-13 18:50:34,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442727574] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:50:34,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:50:34,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:50:34,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050296821] [2022-12-13 18:50:34,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:50:34,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:50:34,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:50:34,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:50:34,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:50:34,111 INFO L87 Difference]: Start difference. First operand 4608 states and 6744 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:50:34,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:50:34,327 INFO L93 Difference]: Finished difference Result 5752 states and 8306 transitions. [2022-12-13 18:50:34,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:50:34,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2022-12-13 18:50:34,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:50:34,330 INFO L225 Difference]: With dead ends: 5752 [2022-12-13 18:50:34,330 INFO L226 Difference]: Without dead ends: 3470 [2022-12-13 18:50:34,331 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 [2022-12-13 18:50:34,332 INFO L413 NwaCegarLoop]: 1578 mSDtfsCounter, 41 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3088 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:50:34,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3088 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:50:34,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3470 states. [2022-12-13 18:50:34,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3470 to 3468. [2022-12-13 18:50:34,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3468 states, 3466 states have (on average 1.4913444893248702) internal successors, (5169), 3467 states have internal predecessors, (5169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:50:34,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3468 states to 3468 states and 5169 transitions. [2022-12-13 18:50:34,547 INFO L78 Accepts]: Start accepts. Automaton has 3468 states and 5169 transitions. Word has length 101 [2022-12-13 18:50:34,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:50:34,547 INFO L495 AbstractCegarLoop]: Abstraction has 3468 states and 5169 transitions. [2022-12-13 18:50:34,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:50:34,548 INFO L276 IsEmpty]: Start isEmpty. Operand 3468 states and 5169 transitions. [2022-12-13 18:50:34,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-13 18:50:34,548 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:50:34,548 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 18:50:34,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 18:50:34,549 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:50:34,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:50:34,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1744587218, now seen corresponding path program 1 times [2022-12-13 18:50:34,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:50:34,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819677673] [2022-12-13 18:50:34,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:50:34,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:50:34,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:50:35,360 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:50:35,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:50:35,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819677673] [2022-12-13 18:50:35,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819677673] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:50:35,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905557377] [2022-12-13 18:50:35,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:50:35,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:50:35,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:50:35,362 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:50:35,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 18:50:35,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:50:35,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 18:50:35,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:50:35,740 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 18:50:35,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:50:35,896 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 18:50:35,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905557377] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:50:35,896 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:50:35,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 4] total 17 [2022-12-13 18:50:35,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788804031] [2022-12-13 18:50:35,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:50:35,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 18:50:35,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:50:35,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 18:50:35,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2022-12-13 18:50:35,897 INFO L87 Difference]: Start difference. First operand 3468 states and 5169 transitions. Second operand has 17 states, 17 states have (on average 17.176470588235293) internal successors, (292), 17 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:50:42,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:50:42,004 INFO L93 Difference]: Finished difference Result 15555 states and 21262 transitions. [2022-12-13 18:50:42,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-12-13 18:50:42,005 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 17.176470588235293) internal successors, (292), 17 states have internal predecessors, (292), 0 states have call successors, (0), 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 103 [2022-12-13 18:50:42,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:50:42,016 INFO L225 Difference]: With dead ends: 15555 [2022-12-13 18:50:42,016 INFO L226 Difference]: Without dead ends: 14413 [2022-12-13 18:50:42,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1372 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=862, Invalid=3694, Unknown=0, NotChecked=0, Total=4556 [2022-12-13 18:50:42,019 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 16981 mSDsluCounter, 5067 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16981 SdHoareTripleChecker+Valid, 6608 SdHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 18:50:42,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16981 Valid, 6608 Invalid, 964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 18:50:42,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14413 states. [2022-12-13 18:50:43,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14413 to 10569. [2022-12-13 18:50:43,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10569 states, 10567 states have (on average 1.351755465127283) internal successors, (14284), 10568 states have internal predecessors, (14284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:50:43,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10569 states to 10569 states and 14284 transitions. [2022-12-13 18:50:43,735 INFO L78 Accepts]: Start accepts. Automaton has 10569 states and 14284 transitions. Word has length 103 [2022-12-13 18:50:43,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:50:43,735 INFO L495 AbstractCegarLoop]: Abstraction has 10569 states and 14284 transitions. [2022-12-13 18:50:43,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 17.176470588235293) internal successors, (292), 17 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:50:43,735 INFO L276 IsEmpty]: Start isEmpty. Operand 10569 states and 14284 transitions. [2022-12-13 18:50:43,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 18:50:43,736 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:50:43,736 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 18:50:43,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 18:50:43,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:50:43,938 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:50:43,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:50:43,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1733617625, now seen corresponding path program 1 times [2022-12-13 18:50:43,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:50:43,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834820580] [2022-12-13 18:50:43,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:50:43,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:50:43,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:50:44,514 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:50:44,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:50:44,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834820580] [2022-12-13 18:50:44,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834820580] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:50:44,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883577757] [2022-12-13 18:50:44,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:50:44,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:50:44,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:50:44,515 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:50:44,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 18:50:44,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:50:44,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 18:50:44,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:50:45,139 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:50:45,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:50:45,943 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:50:45,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883577757] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:50:45,943 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:50:45,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 28 [2022-12-13 18:50:45,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156872713] [2022-12-13 18:50:45,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:50:45,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-13 18:50:45,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:50:45,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-13 18:50:45,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2022-12-13 18:50:45,945 INFO L87 Difference]: Start difference. First operand 10569 states and 14284 transitions. Second operand has 29 states, 29 states have (on average 10.137931034482758) internal successors, (294), 28 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:51:03,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:51:03,018 INFO L93 Difference]: Finished difference Result 62963 states and 80399 transitions. [2022-12-13 18:51:03,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-12-13 18:51:03,019 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 10.137931034482758) internal successors, (294), 28 states have internal predecessors, (294), 0 states have call successors, (0), 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 104 [2022-12-13 18:51:03,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:51:03,076 INFO L225 Difference]: With dead ends: 62963 [2022-12-13 18:51:03,076 INFO L226 Difference]: Without dead ends: 54886 [2022-12-13 18:51:03,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1523 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1208, Invalid=5112, Unknown=0, NotChecked=0, Total=6320 [2022-12-13 18:51:03,089 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 23067 mSDsluCounter, 8812 mSDsCounter, 0 mSdLazyCounter, 1391 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23067 SdHoareTripleChecker+Valid, 10391 SdHoareTripleChecker+Invalid, 1428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 18:51:03,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23067 Valid, 10391 Invalid, 1428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1391 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 18:51:03,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54886 states. [2022-12-13 18:51:11,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54886 to 33332. [2022-12-13 18:51:11,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33332 states, 33330 states have (on average 1.287218721872187) internal successors, (42903), 33331 states have internal predecessors, (42903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:51:11,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33332 states to 33332 states and 42903 transitions. [2022-12-13 18:51:11,091 INFO L78 Accepts]: Start accepts. Automaton has 33332 states and 42903 transitions. Word has length 104 [2022-12-13 18:51:11,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:51:11,091 INFO L495 AbstractCegarLoop]: Abstraction has 33332 states and 42903 transitions. [2022-12-13 18:51:11,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 10.137931034482758) internal successors, (294), 28 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:51:11,091 INFO L276 IsEmpty]: Start isEmpty. Operand 33332 states and 42903 transitions. [2022-12-13 18:51:11,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 18:51:11,093 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:51:11,093 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 18:51:11,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 18:51:11,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-13 18:51:11,295 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:51:11,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:51:11,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1393813607, now seen corresponding path program 1 times [2022-12-13 18:51:11,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:51:11,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760737353] [2022-12-13 18:51:11,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:51:11,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:51:11,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:12,543 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:51:12,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:51:12,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760737353] [2022-12-13 18:51:12,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760737353] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:51:12,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70093423] [2022-12-13 18:51:12,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:51:12,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:51:12,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:51:12,545 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:51:12,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 18:51:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:12,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 18:51:12,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:51:13,273 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:51:13,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:51:14,372 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:51:14,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70093423] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:51:14,372 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:51:14,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2022-12-13 18:51:14,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569899111] [2022-12-13 18:51:14,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:51:14,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-13 18:51:14,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:51:14,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-13 18:51:14,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=910, Unknown=0, NotChecked=0, Total=1056 [2022-12-13 18:51:14,373 INFO L87 Difference]: Start difference. First operand 33332 states and 42903 transitions. Second operand has 33 states, 33 states have (on average 8.121212121212121) internal successors, (268), 33 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:51:44,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:51:44,583 INFO L93 Difference]: Finished difference Result 92659 states and 119411 transitions. [2022-12-13 18:51:44,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-12-13 18:51:44,583 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 8.121212121212121) internal successors, (268), 33 states have internal predecessors, (268), 0 states have call successors, (0), 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 104 [2022-12-13 18:51:44,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:51:44,656 INFO L225 Difference]: With dead ends: 92659 [2022-12-13 18:51:44,656 INFO L226 Difference]: Without dead ends: 72895 [2022-12-13 18:51:44,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 186 SyntacticMatches, 2 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4249 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=2238, Invalid=10872, Unknown=0, NotChecked=0, Total=13110 [2022-12-13 18:51:44,676 INFO L413 NwaCegarLoop]: 1567 mSDtfsCounter, 21370 mSDsluCounter, 11985 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21370 SdHoareTripleChecker+Valid, 13552 SdHoareTripleChecker+Invalid, 1730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-13 18:51:44,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21370 Valid, 13552 Invalid, 1730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1669 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-13 18:51:44,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72895 states. [2022-12-13 18:51:54,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72895 to 33984. [2022-12-13 18:51:54,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33984 states, 33982 states have (on average 1.2810017067859456) internal successors, (43531), 33983 states have internal predecessors, (43531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:51:54,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33984 states to 33984 states and 43531 transitions. [2022-12-13 18:51:54,147 INFO L78 Accepts]: Start accepts. Automaton has 33984 states and 43531 transitions. Word has length 104 [2022-12-13 18:51:54,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:51:54,147 INFO L495 AbstractCegarLoop]: Abstraction has 33984 states and 43531 transitions. [2022-12-13 18:51:54,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 8.121212121212121) internal successors, (268), 33 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:51:54,147 INFO L276 IsEmpty]: Start isEmpty. Operand 33984 states and 43531 transitions. [2022-12-13 18:51:54,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-12-13 18:51:54,148 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:51:54,149 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 18:51:54,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 18:51:54,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-13 18:51:54,350 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:51:54,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:51:54,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1495745964, now seen corresponding path program 1 times [2022-12-13 18:51:54,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:51:54,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194821838] [2022-12-13 18:51:54,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:51:54,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:51:54,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:55,341 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:51:55,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:51:55,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194821838] [2022-12-13 18:51:55,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194821838] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:51:55,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546356727] [2022-12-13 18:51:55,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:51:55,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:51:55,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:51:55,343 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:51:55,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 18:51:55,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:55,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 18:51:55,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:51:56,099 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:51:56,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:51:56,690 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:51:56,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546356727] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:51:56,691 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:51:56,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2022-12-13 18:51:56,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705409727] [2022-12-13 18:51:56,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:51:56,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-13 18:51:56,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:51:56,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-13 18:51:56,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2022-12-13 18:51:56,693 INFO L87 Difference]: Start difference. First operand 33984 states and 43531 transitions. Second operand has 28 states, 28 states have (on average 9.892857142857142) internal successors, (277), 27 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:53:40,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:53:40,804 INFO L93 Difference]: Finished difference Result 296881 states and 373306 transitions. [2022-12-13 18:53:40,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-12-13 18:53:40,805 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 9.892857142857142) internal successors, (277), 27 states have internal predecessors, (277), 0 states have call successors, (0), 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 105 [2022-12-13 18:53:40,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:53:41,150 INFO L225 Difference]: With dead ends: 296881 [2022-12-13 18:53:41,150 INFO L226 Difference]: Without dead ends: 267560 [2022-12-13 18:53:41,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 193 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2700 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=1445, Invalid=7675, Unknown=0, NotChecked=0, Total=9120 [2022-12-13 18:53:41,204 INFO L413 NwaCegarLoop]: 1658 mSDtfsCounter, 26609 mSDsluCounter, 8107 mSDsCounter, 0 mSdLazyCounter, 2377 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26609 SdHoareTripleChecker+Valid, 9765 SdHoareTripleChecker+Invalid, 2425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:53:41,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26609 Valid, 9765 Invalid, 2425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 2377 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-13 18:53:41,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267560 states. [2022-12-13 18:54:31,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267560 to 138791. [2022-12-13 18:54:31,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138791 states, 138789 states have (on average 1.2475772575636397) internal successors, (173150), 138790 states have internal predecessors, (173150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:54:32,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138791 states to 138791 states and 173150 transitions. [2022-12-13 18:54:32,118 INFO L78 Accepts]: Start accepts. Automaton has 138791 states and 173150 transitions. Word has length 105 [2022-12-13 18:54:32,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:54:32,118 INFO L495 AbstractCegarLoop]: Abstraction has 138791 states and 173150 transitions. [2022-12-13 18:54:32,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.892857142857142) internal successors, (277), 27 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:54:32,118 INFO L276 IsEmpty]: Start isEmpty. Operand 138791 states and 173150 transitions. [2022-12-13 18:54:32,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-12-13 18:54:32,121 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:54:32,121 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 18:54:32,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 18:54:32,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-13 18:54:32,323 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:54:32,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:54:32,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1769275031, now seen corresponding path program 1 times [2022-12-13 18:54:32,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:54:32,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213984693] [2022-12-13 18:54:32,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:54:32,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:54:32,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:54:32,542 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:54:32,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:54:32,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213984693] [2022-12-13 18:54:32,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213984693] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:54:32,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807097527] [2022-12-13 18:54:32,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:54:32,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:54:32,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:54:32,543 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:54:32,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 18:54:32,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:54:32,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 18:54:32,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:54:33,320 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:54:33,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:54:34,403 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:54:34,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807097527] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:54:34,403 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:54:34,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2022-12-13 18:54:34,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323180155] [2022-12-13 18:54:34,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:54:34,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-13 18:54:34,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:54:34,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-13 18:54:34,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2022-12-13 18:54:34,404 INFO L87 Difference]: Start difference. First operand 138791 states and 173150 transitions. Second operand has 28 states, 28 states have (on average 9.928571428571429) internal successors, (278), 28 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:55:49,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:55:49,403 INFO L93 Difference]: Finished difference Result 273504 states and 340506 transitions. [2022-12-13 18:55:49,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 18:55:49,404 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 9.928571428571429) internal successors, (278), 28 states have internal predecessors, (278), 0 states have call successors, (0), 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 106 [2022-12-13 18:55:49,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:55:49,645 INFO L225 Difference]: With dead ends: 273504 [2022-12-13 18:55:49,645 INFO L226 Difference]: Without dead ends: 192449 [2022-12-13 18:55:49,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 193 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=512, Invalid=1558, Unknown=0, NotChecked=0, Total=2070 [2022-12-13 18:55:49,702 INFO L413 NwaCegarLoop]: 1567 mSDtfsCounter, 8430 mSDsluCounter, 5211 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8430 SdHoareTripleChecker+Valid, 6778 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 18:55:49,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8430 Valid, 6778 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 18:55:49,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192449 states. [2022-12-13 18:56:39,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192449 to 133903. [2022-12-13 18:56:39,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133903 states, 133901 states have (on average 1.2430377667082397) internal successors, (166444), 133902 states have internal predecessors, (166444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:56:39,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133903 states to 133903 states and 166444 transitions. [2022-12-13 18:56:39,494 INFO L78 Accepts]: Start accepts. Automaton has 133903 states and 166444 transitions. Word has length 106 [2022-12-13 18:56:39,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:56:39,494 INFO L495 AbstractCegarLoop]: Abstraction has 133903 states and 166444 transitions. [2022-12-13 18:56:39,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.928571428571429) internal successors, (278), 28 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:56:39,495 INFO L276 IsEmpty]: Start isEmpty. Operand 133903 states and 166444 transitions. [2022-12-13 18:56:39,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-12-13 18:56:39,498 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:56:39,498 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 18:56:39,503 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 18:56:39,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:56:39,699 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:56:39,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:56:39,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1098130844, now seen corresponding path program 1 times [2022-12-13 18:56:39,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:56:39,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965855660] [2022-12-13 18:56:39,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:56:39,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:56:39,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:56:39,954 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:56:39,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:56:39,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965855660] [2022-12-13 18:56:39,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965855660] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:56:39,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803846622] [2022-12-13 18:56:39,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:56:39,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:56:39,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:56:39,956 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:56:39,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 18:56:40,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:56:40,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 18:56:40,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:56:40,559 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:56:40,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:56:41,913 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:56:41,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803846622] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:56:41,914 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:56:41,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 27 [2022-12-13 18:56:41,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649383736] [2022-12-13 18:56:41,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:56:41,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-13 18:56:41,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:56:41,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 18:56:41,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2022-12-13 18:56:41,916 INFO L87 Difference]: Start difference. First operand 133903 states and 166444 transitions. Second operand has 27 states, 27 states have (on average 10.296296296296296) internal successors, (278), 27 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:58:21,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:58:21,449 INFO L93 Difference]: Finished difference Result 345026 states and 426320 transitions. [2022-12-13 18:58:21,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 18:58:21,450 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 10.296296296296296) internal successors, (278), 27 states have internal predecessors, (278), 0 states have call successors, (0), 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 107 [2022-12-13 18:58:21,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:58:21,754 INFO L225 Difference]: With dead ends: 345026 [2022-12-13 18:58:21,754 INFO L226 Difference]: Without dead ends: 223197 [2022-12-13 18:58:21,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 196 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=395, Invalid=1411, Unknown=0, NotChecked=0, Total=1806 [2022-12-13 18:58:21,830 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 8199 mSDsluCounter, 11330 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8199 SdHoareTripleChecker+Valid, 12903 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 18:58:21,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8199 Valid, 12903 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 18:58:21,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223197 states. [2022-12-13 18:59:23,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223197 to 154899. [2022-12-13 18:59:23,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154899 states, 154897 states have (on average 1.2457826813947332) internal successors, (192968), 154898 states have internal predecessors, (192968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:59:24,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154899 states to 154899 states and 192968 transitions. [2022-12-13 18:59:24,097 INFO L78 Accepts]: Start accepts. Automaton has 154899 states and 192968 transitions. Word has length 107 [2022-12-13 18:59:24,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:59:24,097 INFO L495 AbstractCegarLoop]: Abstraction has 154899 states and 192968 transitions. [2022-12-13 18:59:24,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 10.296296296296296) internal successors, (278), 27 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:59:24,097 INFO L276 IsEmpty]: Start isEmpty. Operand 154899 states and 192968 transitions. [2022-12-13 18:59:24,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-12-13 18:59:24,100 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:59:24,100 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 18:59:24,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 18:59:24,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:59:24,302 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:59:24,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:59:24,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1352008436, now seen corresponding path program 1 times [2022-12-13 18:59:24,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:59:24,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535042665] [2022-12-13 18:59:24,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:59:24,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:59:24,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:24,680 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:59:24,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:59:24,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535042665] [2022-12-13 18:59:24,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535042665] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:59:24,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515682302] [2022-12-13 18:59:24,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:59:24,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:59:24,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:59:24,682 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:59:24,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa22fa71-08ce-4da1-932a-ce56526bb6ba/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 18:59:24,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:59:24,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 18:59:24,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:59:26,673 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:59:26,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:59:29,725 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:59:29,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515682302] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:59:29,725 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:59:29,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18, 19] total 43 [2022-12-13 18:59:29,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289100042] [2022-12-13 18:59:29,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:59:29,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-12-13 18:59:29,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:59:29,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-13 18:59:29,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1622, Unknown=0, NotChecked=0, Total=1806 [2022-12-13 18:59:29,727 INFO L87 Difference]: Start difference. First operand 154899 states and 192968 transitions. Second operand has 43 states, 43 states have (on average 7.093023255813954) internal successors, (305), 43 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)