./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de21b33c-1c7b-4ad6-9a61-08eff4f233e3/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de21b33c-1c7b-4ad6-9a61-08eff4f233e3/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_de21b33c-1c7b-4ad6-9a61-08eff4f233e3/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de21b33c-1c7b-4ad6-9a61-08eff4f233e3/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de21b33c-1c7b-4ad6-9a61-08eff4f233e3/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_de21b33c-1c7b-4ad6-9a61-08eff4f233e3/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 53c628562139f348a432948065ec43f1ca859b0a402aa2530432925237a49f95 --- 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 15:57:41,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:57:41,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:57:41,728 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:57:41,728 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:57:41,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:57:41,730 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:57:41,732 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:57:41,733 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:57:41,734 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:57:41,735 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:57:41,736 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:57:41,736 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:57:41,737 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:57:41,738 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:57:41,739 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:57:41,740 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:57:41,741 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:57:41,742 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:57:41,744 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:57:41,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:57:41,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:57:41,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:57:41,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:57:41,751 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:57:41,751 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:57:41,752 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:57:41,752 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:57:41,753 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:57:41,754 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:57:41,754 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:57:41,755 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:57:41,755 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:57:41,756 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:57:41,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:57:41,757 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:57:41,757 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:57:41,758 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:57:41,758 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:57:41,759 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:57:41,759 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:57:41,760 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de21b33c-1c7b-4ad6-9a61-08eff4f233e3/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 15:57:41,779 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:57:41,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:57:41,780 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:57:41,780 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:57:41,780 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:57:41,781 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:57:41,781 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:57:41,781 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:57:41,781 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:57:41,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:57:41,782 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:57:41,782 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:57:41,782 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:57:41,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:57:41,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 15:57:41,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:57:41,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 15:57:41,783 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:57:41,783 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 15:57:41,783 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:57:41,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 15:57:41,784 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:57:41,784 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:57:41,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:57:41,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:57:41,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:57:41,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:57:41,785 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 15:57:41,785 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:57:41,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 15:57:41,785 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:57:41,785 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 15:57:41,785 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:57:41,785 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:57:41,786 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:57:41,786 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_de21b33c-1c7b-4ad6-9a61-08eff4f233e3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de21b33c-1c7b-4ad6-9a61-08eff4f233e3/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53c628562139f348a432948065ec43f1ca859b0a402aa2530432925237a49f95 [2022-12-13 15:57:41,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:57:41,999 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:57:42,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:57:42,003 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:57:42,003 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:57:42,005 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de21b33c-1c7b-4ad6-9a61-08eff4f233e3/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2022-12-13 15:57:44,559 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:57:44,765 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:57:44,766 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de21b33c-1c7b-4ad6-9a61-08eff4f233e3/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2022-12-13 15:57:44,777 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de21b33c-1c7b-4ad6-9a61-08eff4f233e3/bin/uautomizer-uyxdKDjOR8/data/e6b369b18/c0f29664a0064b10a00870f1ca13abc7/FLAG5af3e96d3 [2022-12-13 15:57:44,791 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de21b33c-1c7b-4ad6-9a61-08eff4f233e3/bin/uautomizer-uyxdKDjOR8/data/e6b369b18/c0f29664a0064b10a00870f1ca13abc7 [2022-12-13 15:57:44,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:57:44,794 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:57:44,795 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:57:44,795 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:57:44,798 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:57:44,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:57:44" (1/1) ... [2022-12-13 15:57:44,800 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7aa437b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:57:44, skipping insertion in model container [2022-12-13 15:57:44,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:57:44" (1/1) ... [2022-12-13 15:57:44,806 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:57:44,869 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:57:45,308 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_de21b33c-1c7b-4ad6-9a61-08eff4f233e3/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[34889,34902] [2022-12-13 15:57:45,494 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:57:45,509 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:57:45,706 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_de21b33c-1c7b-4ad6-9a61-08eff4f233e3/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[34889,34902] [2022-12-13 15:57:45,805 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:57:45,818 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:57:45,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:57:45 WrapperNode [2022-12-13 15:57:45,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:57:45,819 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:57:45,819 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:57:45,819 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:57:45,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:57:45" (1/1) ... [2022-12-13 15:57:45,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:57:45" (1/1) ... [2022-12-13 15:57:45,883 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2898 [2022-12-13 15:57:45,883 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:57:45,883 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:57:45,884 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:57:45,884 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:57:45,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:57:45" (1/1) ... [2022-12-13 15:57:45,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:57:45" (1/1) ... [2022-12-13 15:57:45,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:57:45" (1/1) ... [2022-12-13 15:57:45,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:57:45" (1/1) ... [2022-12-13 15:57:45,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:57:45" (1/1) ... [2022-12-13 15:57:45,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:57:45" (1/1) ... [2022-12-13 15:57:45,923 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:57:45" (1/1) ... [2022-12-13 15:57:45,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:57:45" (1/1) ... [2022-12-13 15:57:45,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:57:45,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:57:45,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:57:45,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:57:45,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:57:45" (1/1) ... [2022-12-13 15:57:45,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:57:45,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de21b33c-1c7b-4ad6-9a61-08eff4f233e3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:57:45,958 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de21b33c-1c7b-4ad6-9a61-08eff4f233e3/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:57:45,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de21b33c-1c7b-4ad6-9a61-08eff4f233e3/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:57:45,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:57:45,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:57:45,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:57:45,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:57:46,154 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:57:46,156 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:57:47,493 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:57:47,507 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:57:47,508 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 15:57:47,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:57:47 BoogieIcfgContainer [2022-12-13 15:57:47,511 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:57:47,513 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:57:47,513 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:57:47,516 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:57:47,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:57:44" (1/3) ... [2022-12-13 15:57:47,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@129e3dac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:57:47, skipping insertion in model container [2022-12-13 15:57:47,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:57:45" (2/3) ... [2022-12-13 15:57:47,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@129e3dac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:57:47, skipping insertion in model container [2022-12-13 15:57:47,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:57:47" (3/3) ... [2022-12-13 15:57:47,519 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2022-12-13 15:57:47,537 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:57:47,537 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 15:57:47,587 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:57:47,593 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;@6622be49, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:57:47,594 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 15:57:47,601 INFO L276 IsEmpty]: Start isEmpty. Operand has 787 states, 776 states have (on average 1.7796391752577319) internal successors, (1381), 786 states have internal predecessors, (1381), 0 states have call successors, (0), 0 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 15:57:47,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2022-12-13 15:57:47,621 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:57:47,622 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:57:47,623 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:57:47,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:57:47,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1694384253, now seen corresponding path program 1 times [2022-12-13 15:57:47,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:57:47,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745739599] [2022-12-13 15:57:47,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:57:47,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:57:47,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:57:48,216 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 15:57:48,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:57:48,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745739599] [2022-12-13 15:57:48,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745739599] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:57:48,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:57:48,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:57:48,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027454496] [2022-12-13 15:57:48,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:57:48,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:57:48,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:57:48,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:57:48,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:57:48,257 INFO L87 Difference]: Start difference. First operand has 787 states, 776 states have (on average 1.7796391752577319) internal successors, (1381), 786 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 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 15:57:48,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:57:48,538 INFO L93 Difference]: Finished difference Result 1498 states and 2590 transitions. [2022-12-13 15:57:48,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:57:48,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 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 308 [2022-12-13 15:57:48,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:57:48,559 INFO L225 Difference]: With dead ends: 1498 [2022-12-13 15:57:48,560 INFO L226 Difference]: Without dead ends: 1264 [2022-12-13 15:57:48,564 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 15:57:48,567 INFO L413 NwaCegarLoop]: 1320 mSDtfsCounter, 858 mSDsluCounter, 1101 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 2421 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:57:48,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 2421 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:57:48,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2022-12-13 15:57:48,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 1262. [2022-12-13 15:57:48,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 1261 states have (on average 1.556701030927835) internal successors, (1963), 1261 states have internal predecessors, (1963), 0 states have call successors, (0), 0 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 15:57:48,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 1963 transitions. [2022-12-13 15:57:48,681 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 1963 transitions. Word has length 308 [2022-12-13 15:57:48,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:57:48,682 INFO L495 AbstractCegarLoop]: Abstraction has 1262 states and 1963 transitions. [2022-12-13 15:57:48,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 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 15:57:48,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 1963 transitions. [2022-12-13 15:57:48,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2022-12-13 15:57:48,692 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:57:48,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:57:48,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 15:57:48,693 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:57:48,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:57:48,694 INFO L85 PathProgramCache]: Analyzing trace with hash -919786699, now seen corresponding path program 1 times [2022-12-13 15:57:48,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:57:48,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634181317] [2022-12-13 15:57:48,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:57:48,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:57:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:57:49,020 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 15:57:49,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:57:49,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634181317] [2022-12-13 15:57:49,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634181317] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:57:49,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:57:49,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:57:49,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978783637] [2022-12-13 15:57:49,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:57:49,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:57:49,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:57:49,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:57:49,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:57:49,024 INFO L87 Difference]: Start difference. First operand 1262 states and 1963 transitions. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 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 15:57:49,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:57:49,186 INFO L93 Difference]: Finished difference Result 2584 states and 4024 transitions. [2022-12-13 15:57:49,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:57:49,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 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 308 [2022-12-13 15:57:49,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:57:49,193 INFO L225 Difference]: With dead ends: 2584 [2022-12-13 15:57:49,193 INFO L226 Difference]: Without dead ends: 2224 [2022-12-13 15:57:49,195 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 15:57:49,196 INFO L413 NwaCegarLoop]: 1147 mSDtfsCounter, 694 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 2111 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:57:49,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [694 Valid, 2111 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:57:49,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2224 states. [2022-12-13 15:57:49,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2224 to 2222. [2022-12-13 15:57:49,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2222 states, 2221 states have (on average 1.5484016208914904) internal successors, (3439), 2221 states have internal predecessors, (3439), 0 states have call successors, (0), 0 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 15:57:49,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2222 states to 2222 states and 3439 transitions. [2022-12-13 15:57:49,266 INFO L78 Accepts]: Start accepts. Automaton has 2222 states and 3439 transitions. Word has length 308 [2022-12-13 15:57:49,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:57:49,266 INFO L495 AbstractCegarLoop]: Abstraction has 2222 states and 3439 transitions. [2022-12-13 15:57:49,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 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 15:57:49,267 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states and 3439 transitions. [2022-12-13 15:57:49,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2022-12-13 15:57:49,271 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:57:49,271 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:57:49,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 15:57:49,271 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:57:49,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:57:49,272 INFO L85 PathProgramCache]: Analyzing trace with hash 508548576, now seen corresponding path program 1 times [2022-12-13 15:57:49,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:57:49,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539520769] [2022-12-13 15:57:49,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:57:49,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:57:49,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:57:49,443 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 15:57:49,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:57:49,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539520769] [2022-12-13 15:57:49,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539520769] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:57:49,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:57:49,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:57:49,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150282041] [2022-12-13 15:57:49,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:57:49,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:57:49,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:57:49,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:57:49,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:57:49,446 INFO L87 Difference]: Start difference. First operand 2222 states and 3439 transitions. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 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 15:57:49,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:57:49,663 INFO L93 Difference]: Finished difference Result 4702 states and 7289 transitions. [2022-12-13 15:57:49,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:57:49,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 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 308 [2022-12-13 15:57:49,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:57:49,686 INFO L225 Difference]: With dead ends: 4702 [2022-12-13 15:57:49,687 INFO L226 Difference]: Without dead ends: 4072 [2022-12-13 15:57:49,689 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 15:57:49,690 INFO L413 NwaCegarLoop]: 1147 mSDtfsCounter, 678 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 2083 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:57:49,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 2083 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:57:49,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4072 states. [2022-12-13 15:57:49,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4072 to 4070. [2022-12-13 15:57:49,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4070 states, 4069 states have (on average 1.540181862865569) internal successors, (6267), 4069 states have internal predecessors, (6267), 0 states have call successors, (0), 0 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 15:57:49,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4070 states to 4070 states and 6267 transitions. [2022-12-13 15:57:49,875 INFO L78 Accepts]: Start accepts. Automaton has 4070 states and 6267 transitions. Word has length 308 [2022-12-13 15:57:49,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:57:49,876 INFO L495 AbstractCegarLoop]: Abstraction has 4070 states and 6267 transitions. [2022-12-13 15:57:49,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 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 15:57:49,876 INFO L276 IsEmpty]: Start isEmpty. Operand 4070 states and 6267 transitions. [2022-12-13 15:57:49,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2022-12-13 15:57:49,885 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:57:49,885 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:57:49,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 15:57:49,886 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:57:49,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:57:49,886 INFO L85 PathProgramCache]: Analyzing trace with hash 678875761, now seen corresponding path program 1 times [2022-12-13 15:57:49,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:57:49,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077223952] [2022-12-13 15:57:49,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:57:49,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:57:50,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:57:50,388 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 15:57:50,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:57:50,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077223952] [2022-12-13 15:57:50,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077223952] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:57:50,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:57:50,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 15:57:50,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513711398] [2022-12-13 15:57:50,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:57:50,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:57:50,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:57:50,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:57:50,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:57:50,391 INFO L87 Difference]: Start difference. First operand 4070 states and 6267 transitions. Second operand has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 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 15:57:50,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:57:50,831 INFO L93 Difference]: Finished difference Result 12035 states and 18506 transitions. [2022-12-13 15:57:50,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 15:57:50,832 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 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 308 [2022-12-13 15:57:50,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:57:50,869 INFO L225 Difference]: With dead ends: 12035 [2022-12-13 15:57:50,869 INFO L226 Difference]: Without dead ends: 7976 [2022-12-13 15:57:50,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:57:50,876 INFO L413 NwaCegarLoop]: 1824 mSDtfsCounter, 2789 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2789 SdHoareTripleChecker+Valid, 2957 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:57:50,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2789 Valid, 2957 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:57:50,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7976 states. [2022-12-13 15:57:51,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7976 to 7974. [2022-12-13 15:57:51,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7974 states, 7973 states have (on average 1.5301643045277813) internal successors, (12200), 7973 states have internal predecessors, (12200), 0 states have call successors, (0), 0 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 15:57:51,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7974 states to 7974 states and 12200 transitions. [2022-12-13 15:57:51,393 INFO L78 Accepts]: Start accepts. Automaton has 7974 states and 12200 transitions. Word has length 308 [2022-12-13 15:57:51,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:57:51,393 INFO L495 AbstractCegarLoop]: Abstraction has 7974 states and 12200 transitions. [2022-12-13 15:57:51,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 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 15:57:51,394 INFO L276 IsEmpty]: Start isEmpty. Operand 7974 states and 12200 transitions. [2022-12-13 15:57:51,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-12-13 15:57:51,403 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:57:51,403 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:57:51,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 15:57:51,403 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:57:51,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:57:51,404 INFO L85 PathProgramCache]: Analyzing trace with hash -2007211620, now seen corresponding path program 1 times [2022-12-13 15:57:51,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:57:51,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832985248] [2022-12-13 15:57:51,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:57:51,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:57:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:57:51,499 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 15:57:51,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:57:51,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832985248] [2022-12-13 15:57:51,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832985248] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:57:51,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:57:51,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:57:51,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660279538] [2022-12-13 15:57:51,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:57:51,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:57:51,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:57:51,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:57:51,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:57:51,502 INFO L87 Difference]: Start difference. First operand 7974 states and 12200 transitions. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 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 15:57:52,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:57:52,256 INFO L93 Difference]: Finished difference Result 23885 states and 36537 transitions. [2022-12-13 15:57:52,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:57:52,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 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 310 [2022-12-13 15:57:52,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:57:52,295 INFO L225 Difference]: With dead ends: 23885 [2022-12-13 15:57:52,295 INFO L226 Difference]: Without dead ends: 15932 [2022-12-13 15:57:52,304 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 15:57:52,305 INFO L413 NwaCegarLoop]: 2392 mSDtfsCounter, 1193 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1193 SdHoareTripleChecker+Valid, 3586 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:57:52,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1193 Valid, 3586 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:57:52,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15932 states. [2022-12-13 15:57:52,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15932 to 7987. [2022-12-13 15:57:52,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7987 states, 7986 states have (on average 1.530052592036063) internal successors, (12219), 7986 states have internal predecessors, (12219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:57:52,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7987 states to 7987 states and 12219 transitions. [2022-12-13 15:57:52,819 INFO L78 Accepts]: Start accepts. Automaton has 7987 states and 12219 transitions. Word has length 310 [2022-12-13 15:57:52,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:57:52,819 INFO L495 AbstractCegarLoop]: Abstraction has 7987 states and 12219 transitions. [2022-12-13 15:57:52,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 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 15:57:52,820 INFO L276 IsEmpty]: Start isEmpty. Operand 7987 states and 12219 transitions. [2022-12-13 15:57:52,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-12-13 15:57:52,836 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:57:52,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:57:52,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 15:57:52,837 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:57:52,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:57:52,837 INFO L85 PathProgramCache]: Analyzing trace with hash 581744279, now seen corresponding path program 1 times [2022-12-13 15:57:52,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:57:52,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936867190] [2022-12-13 15:57:52,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:57:52,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:57:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:57:52,956 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 15:57:52,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:57:52,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936867190] [2022-12-13 15:57:52,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936867190] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:57:52,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:57:52,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:57:52,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798713714] [2022-12-13 15:57:52,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:57:52,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:57:52,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:57:52,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:57:52,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:57:52,960 INFO L87 Difference]: Start difference. First operand 7987 states and 12219 transitions. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 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 15:57:53,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:57:53,952 INFO L93 Difference]: Finished difference Result 23498 states and 35872 transitions. [2022-12-13 15:57:53,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:57:53,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 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 310 [2022-12-13 15:57:53,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:57:53,986 INFO L225 Difference]: With dead ends: 23498 [2022-12-13 15:57:53,986 INFO L226 Difference]: Without dead ends: 15649 [2022-12-13 15:57:53,998 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 15:57:53,999 INFO L413 NwaCegarLoop]: 2337 mSDtfsCounter, 1077 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 3480 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:57:53,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1077 Valid, 3480 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:57:54,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15649 states. [2022-12-13 15:57:54,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15649 to 15647. [2022-12-13 15:57:54,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15647 states, 15646 states have (on average 1.520196855426307) internal successors, (23785), 15646 states have internal predecessors, (23785), 0 states have call successors, (0), 0 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 15:57:54,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15647 states to 15647 states and 23785 transitions. [2022-12-13 15:57:54,764 INFO L78 Accepts]: Start accepts. Automaton has 15647 states and 23785 transitions. Word has length 310 [2022-12-13 15:57:54,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:57:54,765 INFO L495 AbstractCegarLoop]: Abstraction has 15647 states and 23785 transitions. [2022-12-13 15:57:54,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 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 15:57:54,765 INFO L276 IsEmpty]: Start isEmpty. Operand 15647 states and 23785 transitions. [2022-12-13 15:57:54,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2022-12-13 15:57:54,779 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:57:54,779 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:57:54,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 15:57:54,780 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:57:54,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:57:54,780 INFO L85 PathProgramCache]: Analyzing trace with hash 710479745, now seen corresponding path program 1 times [2022-12-13 15:57:54,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:57:54,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788977862] [2022-12-13 15:57:54,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:57:54,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:57:54,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:57:54,870 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 15:57:54,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:57:54,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788977862] [2022-12-13 15:57:54,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788977862] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:57:54,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:57:54,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:57:54,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299902436] [2022-12-13 15:57:54,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:57:54,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:57:54,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:57:54,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:57:54,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:57:54,873 INFO L87 Difference]: Start difference. First operand 15647 states and 23785 transitions. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 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 15:57:56,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:57:56,299 INFO L93 Difference]: Finished difference Result 46836 states and 71176 transitions. [2022-12-13 15:57:56,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:57:56,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 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 311 [2022-12-13 15:57:56,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:57:56,348 INFO L225 Difference]: With dead ends: 46836 [2022-12-13 15:57:56,348 INFO L226 Difference]: Without dead ends: 31245 [2022-12-13 15:57:56,363 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 15:57:56,364 INFO L413 NwaCegarLoop]: 2391 mSDtfsCounter, 1188 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1188 SdHoareTripleChecker+Valid, 3585 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:57:56,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1188 Valid, 3585 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:57:56,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31245 states. [2022-12-13 15:57:57,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31245 to 15665. [2022-12-13 15:57:57,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15665 states, 15664 states have (on average 1.5197906026557713) internal successors, (23806), 15664 states have internal predecessors, (23806), 0 states have call successors, (0), 0 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 15:57:57,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15665 states to 15665 states and 23806 transitions. [2022-12-13 15:57:57,271 INFO L78 Accepts]: Start accepts. Automaton has 15665 states and 23806 transitions. Word has length 311 [2022-12-13 15:57:57,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:57:57,271 INFO L495 AbstractCegarLoop]: Abstraction has 15665 states and 23806 transitions. [2022-12-13 15:57:57,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 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 15:57:57,272 INFO L276 IsEmpty]: Start isEmpty. Operand 15665 states and 23806 transitions. [2022-12-13 15:57:57,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2022-12-13 15:57:57,284 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:57:57,284 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:57:57,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 15:57:57,284 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:57:57,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:57:57,285 INFO L85 PathProgramCache]: Analyzing trace with hash -548992078, now seen corresponding path program 1 times [2022-12-13 15:57:57,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:57:57,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805466702] [2022-12-13 15:57:57,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:57:57,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:57:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:57:57,412 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 15:57:57,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:57:57,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805466702] [2022-12-13 15:57:57,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805466702] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:57:57,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:57:57,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:57:57,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358011906] [2022-12-13 15:57:57,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:57:57,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:57:57,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:57:57,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:57:57,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:57:57,414 INFO L87 Difference]: Start difference. First operand 15665 states and 23806 transitions. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 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 15:57:59,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:57:59,419 INFO L93 Difference]: Finished difference Result 44370 states and 67271 transitions. [2022-12-13 15:57:59,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:57:59,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 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 312 [2022-12-13 15:57:59,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:57:59,452 INFO L225 Difference]: With dead ends: 44370 [2022-12-13 15:57:59,452 INFO L226 Difference]: Without dead ends: 28946 [2022-12-13 15:57:59,465 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 15:57:59,465 INFO L413 NwaCegarLoop]: 2344 mSDtfsCounter, 1071 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 3487 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:57:59,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1071 Valid, 3487 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:57:59,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28946 states. [2022-12-13 15:58:00,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28946 to 28944. [2022-12-13 15:58:00,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28944 states, 28943 states have (on average 1.508413087793249) internal successors, (43658), 28943 states have internal predecessors, (43658), 0 states have call successors, (0), 0 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 15:58:01,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28944 states to 28944 states and 43658 transitions. [2022-12-13 15:58:01,029 INFO L78 Accepts]: Start accepts. Automaton has 28944 states and 43658 transitions. Word has length 312 [2022-12-13 15:58:01,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:58:01,030 INFO L495 AbstractCegarLoop]: Abstraction has 28944 states and 43658 transitions. [2022-12-13 15:58:01,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 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 15:58:01,030 INFO L276 IsEmpty]: Start isEmpty. Operand 28944 states and 43658 transitions. [2022-12-13 15:58:01,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2022-12-13 15:58:01,051 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:58:01,051 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:58:01,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 15:58:01,051 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:58:01,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:58:01,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1480696305, now seen corresponding path program 1 times [2022-12-13 15:58:01,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:58:01,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273448177] [2022-12-13 15:58:01,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:58:01,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:58:01,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:58:01,530 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 15:58:01,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:58:01,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273448177] [2022-12-13 15:58:01,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273448177] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:58:01,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:58:01,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 15:58:01,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8657712] [2022-12-13 15:58:01,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:58:01,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:58:01,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:58:01,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:58:01,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:58:01,533 INFO L87 Difference]: Start difference. First operand 28944 states and 43658 transitions. Second operand has 5 states, 5 states have (on average 62.4) internal successors, (312), 5 states have internal predecessors, (312), 0 states have call successors, (0), 0 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 15:58:05,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:58:05,228 INFO L93 Difference]: Finished difference Result 85360 states and 128515 transitions. [2022-12-13 15:58:05,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 15:58:05,228 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 62.4) internal successors, (312), 5 states have internal predecessors, (312), 0 states have call successors, (0), 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 312 [2022-12-13 15:58:05,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:58:05,296 INFO L225 Difference]: With dead ends: 85360 [2022-12-13 15:58:05,296 INFO L226 Difference]: Without dead ends: 56471 [2022-12-13 15:58:05,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:58:05,320 INFO L413 NwaCegarLoop]: 1869 mSDtfsCounter, 3403 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3403 SdHoareTripleChecker+Valid, 3002 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:58:05,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3403 Valid, 3002 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:58:05,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56471 states. [2022-12-13 15:58:08,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56471 to 56469. [2022-12-13 15:58:08,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56469 states, 56468 states have (on average 1.4965467167245166) internal successors, (84507), 56468 states have internal predecessors, (84507), 0 states have call successors, (0), 0 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 15:58:09,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56469 states to 56469 states and 84507 transitions. [2022-12-13 15:58:09,062 INFO L78 Accepts]: Start accepts. Automaton has 56469 states and 84507 transitions. Word has length 312 [2022-12-13 15:58:09,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:58:09,062 INFO L495 AbstractCegarLoop]: Abstraction has 56469 states and 84507 transitions. [2022-12-13 15:58:09,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.4) internal successors, (312), 5 states have internal predecessors, (312), 0 states have call successors, (0), 0 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 15:58:09,063 INFO L276 IsEmpty]: Start isEmpty. Operand 56469 states and 84507 transitions. [2022-12-13 15:58:09,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-12-13 15:58:09,120 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:58:09,120 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:58:09,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 15:58:09,120 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:58:09,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:58:09,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1121733143, now seen corresponding path program 1 times [2022-12-13 15:58:09,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:58:09,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009668136] [2022-12-13 15:58:09,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:58:09,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:58:09,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:58:09,502 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 15:58:09,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:58:09,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009668136] [2022-12-13 15:58:09,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009668136] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:58:09,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:58:09,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 15:58:09,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171958873] [2022-12-13 15:58:09,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:58:09,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:58:09,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:58:09,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:58:09,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:58:09,504 INFO L87 Difference]: Start difference. First operand 56469 states and 84507 transitions. Second operand has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 0 states have call successors, (0), 0 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 15:58:16,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:58:16,885 INFO L93 Difference]: Finished difference Result 166733 states and 249069 transitions. [2022-12-13 15:58:16,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 15:58:16,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 0 states have call successors, (0), 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 314 [2022-12-13 15:58:16,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:58:17,022 INFO L225 Difference]: With dead ends: 166733 [2022-12-13 15:58:17,022 INFO L226 Difference]: Without dead ends: 110461 [2022-12-13 15:58:17,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:58:17,064 INFO L413 NwaCegarLoop]: 1795 mSDtfsCounter, 2740 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2740 SdHoareTripleChecker+Valid, 2928 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:58:17,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2740 Valid, 2928 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:58:17,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110461 states. [2022-12-13 15:58:24,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110461 to 110459. [2022-12-13 15:58:24,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110459 states, 110458 states have (on average 1.485197993807601) internal successors, (164052), 110458 states have internal predecessors, (164052), 0 states have call successors, (0), 0 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 15:58:25,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110459 states to 110459 states and 164052 transitions. [2022-12-13 15:58:25,024 INFO L78 Accepts]: Start accepts. Automaton has 110459 states and 164052 transitions. Word has length 314 [2022-12-13 15:58:25,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:58:25,024 INFO L495 AbstractCegarLoop]: Abstraction has 110459 states and 164052 transitions. [2022-12-13 15:58:25,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 0 states have call successors, (0), 0 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 15:58:25,025 INFO L276 IsEmpty]: Start isEmpty. Operand 110459 states and 164052 transitions. [2022-12-13 15:58:25,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-12-13 15:58:25,104 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:58:25,104 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:58:25,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 15:58:25,105 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:58:25,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:58:25,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1709461190, now seen corresponding path program 1 times [2022-12-13 15:58:25,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:58:25,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628387277] [2022-12-13 15:58:25,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:58:25,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:58:25,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:58:25,198 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 15:58:25,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:58:25,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628387277] [2022-12-13 15:58:25,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628387277] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:58:25,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:58:25,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:58:25,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41848491] [2022-12-13 15:58:25,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:58:25,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:58:25,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:58:25,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:58:25,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:58:25,199 INFO L87 Difference]: Start difference. First operand 110459 states and 164052 transitions. Second operand has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 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 15:58:40,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:58:40,137 INFO L93 Difference]: Finished difference Result 325737 states and 482716 transitions. [2022-12-13 15:58:40,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:58:40,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 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 316 [2022-12-13 15:58:40,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:58:40,446 INFO L225 Difference]: With dead ends: 325737 [2022-12-13 15:58:40,446 INFO L226 Difference]: Without dead ends: 216171 [2022-12-13 15:58:40,511 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 15:58:40,512 INFO L413 NwaCegarLoop]: 2300 mSDtfsCounter, 1051 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 3443 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:58:40,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1051 Valid, 3443 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 15:58:40,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216171 states. [2022-12-13 15:58:55,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216171 to 216169. [2022-12-13 15:58:56,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216169 states, 216168 states have (on average 1.4737889049257984) internal successors, (318586), 216168 states have internal predecessors, (318586), 0 states have call successors, (0), 0 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 15:58:56,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216169 states to 216169 states and 318586 transitions. [2022-12-13 15:58:56,432 INFO L78 Accepts]: Start accepts. Automaton has 216169 states and 318586 transitions. Word has length 316 [2022-12-13 15:58:56,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:58:56,433 INFO L495 AbstractCegarLoop]: Abstraction has 216169 states and 318586 transitions. [2022-12-13 15:58:56,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 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 15:58:56,433 INFO L276 IsEmpty]: Start isEmpty. Operand 216169 states and 318586 transitions. [2022-12-13 15:58:56,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-12-13 15:58:56,594 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:58:56,594 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:58:56,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 15:58:56,595 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:58:56,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:58:56,595 INFO L85 PathProgramCache]: Analyzing trace with hash -2023890549, now seen corresponding path program 1 times [2022-12-13 15:58:56,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:58:56,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736691095] [2022-12-13 15:58:56,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:58:56,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:58:56,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:58:56,675 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 15:58:56,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:58:56,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736691095] [2022-12-13 15:58:56,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736691095] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:58:56,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:58:56,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:58:56,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246430160] [2022-12-13 15:58:56,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:58:56,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:58:56,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:58:56,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:58:56,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:58:56,678 INFO L87 Difference]: Start difference. First operand 216169 states and 318586 transitions. Second operand has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 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 15:59:27,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:59:27,563 INFO L93 Difference]: Finished difference Result 647711 states and 954452 transitions. [2022-12-13 15:59:27,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:59:27,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 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 316 [2022-12-13 15:59:27,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:59:28,346 INFO L225 Difference]: With dead ends: 647711 [2022-12-13 15:59:28,346 INFO L226 Difference]: Without dead ends: 431985 [2022-12-13 15:59:28,509 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 15:59:28,510 INFO L413 NwaCegarLoop]: 2359 mSDtfsCounter, 1160 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1160 SdHoareTripleChecker+Valid, 3553 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:59:28,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1160 Valid, 3553 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:59:28,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431985 states. [2022-12-13 15:59:49,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431985 to 216359. [2022-12-13 15:59:49,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216359 states, 216358 states have (on average 1.4737888129858845) internal successors, (318866), 216358 states have internal predecessors, (318866), 0 states have call successors, (0), 0 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 15:59:50,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216359 states to 216359 states and 318866 transitions. [2022-12-13 15:59:50,260 INFO L78 Accepts]: Start accepts. Automaton has 216359 states and 318866 transitions. Word has length 316 [2022-12-13 15:59:50,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:59:50,261 INFO L495 AbstractCegarLoop]: Abstraction has 216359 states and 318866 transitions. [2022-12-13 15:59:50,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 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 15:59:50,261 INFO L276 IsEmpty]: Start isEmpty. Operand 216359 states and 318866 transitions. [2022-12-13 15:59:50,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2022-12-13 15:59:50,523 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:59:50,523 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:59:50,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 15:59:50,523 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:59:50,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:59:50,523 INFO L85 PathProgramCache]: Analyzing trace with hash -978047316, now seen corresponding path program 1 times [2022-12-13 15:59:50,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:59:50,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708244563] [2022-12-13 15:59:50,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:59:50,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:59:50,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:59:50,598 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 15:59:50,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:59:50,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708244563] [2022-12-13 15:59:50,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708244563] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:59:50,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:59:50,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:59:50,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903055307] [2022-12-13 15:59:50,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:59:50,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:59:50,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:59:50,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:59:50,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:59:50,599 INFO L87 Difference]: Start difference. First operand 216359 states and 318866 transitions. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 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 16:00:27,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:00:27,063 INFO L93 Difference]: Finished difference Result 647823 states and 954530 transitions. [2022-12-13 16:00:27,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:00:27,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 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 317 [2022-12-13 16:00:27,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:00:27,862 INFO L225 Difference]: With dead ends: 647823 [2022-12-13 16:00:27,863 INFO L226 Difference]: Without dead ends: 432147 [2022-12-13 16:00:28,009 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 16:00:28,009 INFO L413 NwaCegarLoop]: 2359 mSDtfsCounter, 1155 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 3553 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:00:28,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1155 Valid, 3553 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:00:28,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432147 states. [2022-12-13 16:00:51,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432147 to 216521. [2022-12-13 16:00:51,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216521 states, 216520 states have (on average 1.4735451690375023) internal successors, (319052), 216520 states have internal predecessors, (319052), 0 states have call successors, (0), 0 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 16:00:52,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216521 states to 216521 states and 319052 transitions. [2022-12-13 16:00:52,019 INFO L78 Accepts]: Start accepts. Automaton has 216521 states and 319052 transitions. Word has length 317 [2022-12-13 16:00:52,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:00:52,020 INFO L495 AbstractCegarLoop]: Abstraction has 216521 states and 319052 transitions. [2022-12-13 16:00:52,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 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 16:00:52,020 INFO L276 IsEmpty]: Start isEmpty. Operand 216521 states and 319052 transitions. [2022-12-13 16:00:52,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-12-13 16:00:52,179 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:00:52,179 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:00:52,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 16:00:52,179 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:00:52,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:00:52,180 INFO L85 PathProgramCache]: Analyzing trace with hash 289489825, now seen corresponding path program 1 times [2022-12-13 16:00:52,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:00:52,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735158675] [2022-12-13 16:00:52,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:00:52,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:00:52,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:52,275 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 16:00:52,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:00:52,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735158675] [2022-12-13 16:00:52,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735158675] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:00:52,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:00:52,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:00:52,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379634593] [2022-12-13 16:00:52,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:00:52,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:00:52,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:00:52,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:00:52,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:00:52,276 INFO L87 Difference]: Start difference. First operand 216521 states and 319052 transitions. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 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 16:01:32,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:01:32,008 INFO L93 Difference]: Finished difference Result 615236 states and 904593 transitions. [2022-12-13 16:01:32,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:01:32,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 318 [2022-12-13 16:01:32,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:01:32,704 INFO L225 Difference]: With dead ends: 615236 [2022-12-13 16:01:32,704 INFO L226 Difference]: Without dead ends: 400258 [2022-12-13 16:01:32,858 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 16:01:32,859 INFO L413 NwaCegarLoop]: 2310 mSDtfsCounter, 1045 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1045 SdHoareTripleChecker+Valid, 3453 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:01:32,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1045 Valid, 3453 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:01:33,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400258 states. [2022-12-13 16:02:14,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400258 to 400256. [2022-12-13 16:02:14,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400256 states, 400255 states have (on average 1.4611410225980936) internal successors, (584829), 400255 states have internal predecessors, (584829), 0 states have call successors, (0), 0 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 16:02:15,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400256 states to 400256 states and 584829 transitions. [2022-12-13 16:02:15,337 INFO L78 Accepts]: Start accepts. Automaton has 400256 states and 584829 transitions. Word has length 318 [2022-12-13 16:02:15,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:02:15,338 INFO L495 AbstractCegarLoop]: Abstraction has 400256 states and 584829 transitions. [2022-12-13 16:02:15,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 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 16:02:15,338 INFO L276 IsEmpty]: Start isEmpty. Operand 400256 states and 584829 transitions. [2022-12-13 16:02:15,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-12-13 16:02:15,673 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:02:15,673 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:02:15,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 16:02:15,674 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:02:15,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:02:15,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1865883714, now seen corresponding path program 1 times [2022-12-13 16:02:15,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:02:15,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337258537] [2022-12-13 16:02:15,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:02:15,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:02:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:02:16,107 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 16:02:16,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:02:16,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337258537] [2022-12-13 16:02:16,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337258537] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:02:16,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:02:16,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 16:02:16,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810291859] [2022-12-13 16:02:16,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:02:16,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:02:16,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:02:16,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:02:16,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:02:16,109 INFO L87 Difference]: Start difference. First operand 400256 states and 584829 transitions. Second operand has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 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 16:03:40,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:03:40,965 INFO L93 Difference]: Finished difference Result 1180598 states and 1720921 transitions. [2022-12-13 16:03:40,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:03:40,966 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 318 [2022-12-13 16:03:40,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:03:42,229 INFO L225 Difference]: With dead ends: 1180598 [2022-12-13 16:03:42,229 INFO L226 Difference]: Without dead ends: 780961 [2022-12-13 16:03:42,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:03:42,689 INFO L413 NwaCegarLoop]: 1686 mSDtfsCounter, 2941 mSDsluCounter, 2266 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2941 SdHoareTripleChecker+Valid, 3952 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:03:42,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2941 Valid, 3952 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:03:43,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780961 states. [2022-12-13 16:05:14,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780961 to 780959. [2022-12-13 16:05:14,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780959 states, 780958 states have (on average 1.4477423881950118) internal successors, (1130626), 780958 states have internal predecessors, (1130626), 0 states have call successors, (0), 0 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 16:05:16,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780959 states to 780959 states and 1130626 transitions. [2022-12-13 16:05:16,790 INFO L78 Accepts]: Start accepts. Automaton has 780959 states and 1130626 transitions. Word has length 318 [2022-12-13 16:05:16,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:05:16,791 INFO L495 AbstractCegarLoop]: Abstraction has 780959 states and 1130626 transitions. [2022-12-13 16:05:16,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 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 16:05:16,791 INFO L276 IsEmpty]: Start isEmpty. Operand 780959 states and 1130626 transitions. [2022-12-13 16:05:17,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-12-13 16:05:17,817 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:05:17,818 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:05:17,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 16:05:17,818 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:05:17,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:05:17,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1889640941, now seen corresponding path program 1 times [2022-12-13 16:05:17,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:05:17,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049642835] [2022-12-13 16:05:17,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:05:17,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:05:17,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:05:17,981 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 16:05:17,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:05:17,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049642835] [2022-12-13 16:05:17,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049642835] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:05:17,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:05:17,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:05:17,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862824510] [2022-12-13 16:05:17,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:05:17,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:05:17,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:05:17,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:05:17,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:05:17,984 INFO L87 Difference]: Start difference. First operand 780959 states and 1130626 transitions. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 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 16:08:12,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:08:12,365 INFO L93 Difference]: Finished difference Result 2299217 states and 3319090 transitions. [2022-12-13 16:08:12,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:08:12,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 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 320 [2022-12-13 16:08:12,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:08:15,376 INFO L225 Difference]: With dead ends: 2299217 [2022-12-13 16:08:15,377 INFO L226 Difference]: Without dead ends: 1524767 [2022-12-13 16:08:16,028 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 16:08:16,028 INFO L413 NwaCegarLoop]: 2329 mSDtfsCounter, 1064 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1064 SdHoareTripleChecker+Valid, 3472 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:08:16,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1064 Valid, 3472 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 16:08:17,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524767 states.