./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.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_7614b7ef-a5cb-4ffa-868b-2f919fa9c011/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7614b7ef-a5cb-4ffa-868b-2f919fa9c011/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_7614b7ef-a5cb-4ffa-868b-2f919fa9c011/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7614b7ef-a5cb-4ffa-868b-2f919fa9c011/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7614b7ef-a5cb-4ffa-868b-2f919fa9c011/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_7614b7ef-a5cb-4ffa-868b-2f919fa9c011/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 35eb4fe61244b47e62120cf84d8eaed931ae7a7b0a5140717764703691b11b75 --- 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 20:57:56,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:57:56,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:57:56,942 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:57:56,943 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:57:56,943 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:57:56,944 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:57:56,945 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:57:56,946 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:57:56,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:57:56,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:57:56,949 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:57:56,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:57:56,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:57:56,950 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:57:56,951 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:57:56,952 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:57:56,952 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:57:56,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:57:56,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:57:56,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:57:56,957 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:57:56,958 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:57:56,958 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:57:56,961 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:57:56,961 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:57:56,961 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:57:56,962 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:57:56,962 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:57:56,963 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:57:56,963 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:57:56,964 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:57:56,964 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:57:56,965 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:57:56,965 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:57:56,966 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:57:56,966 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:57:56,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:57:56,967 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:57:56,967 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:57:56,968 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:57:56,969 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7614b7ef-a5cb-4ffa-868b-2f919fa9c011/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 20:57:56,984 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:57:56,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:57:56,984 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:57:56,984 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:57:56,985 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:57:56,985 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:57:56,985 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:57:56,986 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:57:56,986 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:57:56,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:57:56,986 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:57:56,986 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:57:56,986 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:57:56,986 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:57:56,987 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 20:57:56,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:57:56,987 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 20:57:56,987 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:57:56,987 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 20:57:56,987 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:57:56,987 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 20:57:56,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:57:56,988 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:57:56,988 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:57:56,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:57:56,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:57:56,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:57:56,988 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 20:57:56,988 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:57:56,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 20:57:56,989 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:57:56,989 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 20:57:56,989 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:57:56,989 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:57:56,989 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:57:56,989 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_7614b7ef-a5cb-4ffa-868b-2f919fa9c011/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7614b7ef-a5cb-4ffa-868b-2f919fa9c011/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 35eb4fe61244b47e62120cf84d8eaed931ae7a7b0a5140717764703691b11b75 [2022-12-13 20:57:57,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:57:57,185 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:57:57,187 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:57:57,188 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:57:57,188 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:57:57,189 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7614b7ef-a5cb-4ffa-868b-2f919fa9c011/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2022-12-13 20:57:59,824 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:58:00,007 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:58:00,008 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7614b7ef-a5cb-4ffa-868b-2f919fa9c011/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2022-12-13 20:58:00,018 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7614b7ef-a5cb-4ffa-868b-2f919fa9c011/bin/uautomizer-uyxdKDjOR8/data/522c2ffbf/a9958d1b42a548f5917848b2fe48f658/FLAGd8af7f602 [2022-12-13 20:58:00,030 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7614b7ef-a5cb-4ffa-868b-2f919fa9c011/bin/uautomizer-uyxdKDjOR8/data/522c2ffbf/a9958d1b42a548f5917848b2fe48f658 [2022-12-13 20:58:00,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:58:00,034 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:58:00,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:58:00,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:58:00,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:58:00,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:58:00" (1/1) ... [2022-12-13 20:58:00,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@345ab775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:58:00, skipping insertion in model container [2022-12-13 20:58:00,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:58:00" (1/1) ... [2022-12-13 20:58:00,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:58:00,075 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:58:00,241 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_7614b7ef-a5cb-4ffa-868b-2f919fa9c011/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c[10021,10034] [2022-12-13 20:58:00,293 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:58:00,304 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:58:00,352 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_7614b7ef-a5cb-4ffa-868b-2f919fa9c011/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c[10021,10034] [2022-12-13 20:58:00,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:58:00,397 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:58:00,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:58:00 WrapperNode [2022-12-13 20:58:00,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:58:00,398 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:58:00,398 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:58:00,398 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:58:00,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:58:00" (1/1) ... [2022-12-13 20:58:00,412 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:58:00" (1/1) ... [2022-12-13 20:58:00,440 INFO L138 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 933 [2022-12-13 20:58:00,441 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:58:00,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:58:00,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:58:00,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:58:00,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:58:00" (1/1) ... [2022-12-13 20:58:00,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:58:00" (1/1) ... [2022-12-13 20:58:00,451 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:58:00" (1/1) ... [2022-12-13 20:58:00,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:58:00" (1/1) ... [2022-12-13 20:58:00,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:58:00" (1/1) ... [2022-12-13 20:58:00,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:58:00" (1/1) ... [2022-12-13 20:58:00,465 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:58:00" (1/1) ... [2022-12-13 20:58:00,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:58:00" (1/1) ... [2022-12-13 20:58:00,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:58:00,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:58:00,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:58:00,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:58:00,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:58:00" (1/1) ... [2022-12-13 20:58:00,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:58:00,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7614b7ef-a5cb-4ffa-868b-2f919fa9c011/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:58:00,493 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7614b7ef-a5cb-4ffa-868b-2f919fa9c011/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:58:00,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7614b7ef-a5cb-4ffa-868b-2f919fa9c011/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:58:00,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:58:00,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 20:58:00,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:58:00,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:58:00,643 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:58:00,646 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:58:01,223 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:58:01,230 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:58:01,230 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 20:58:01,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:58:01 BoogieIcfgContainer [2022-12-13 20:58:01,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:58:01,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:58:01,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:58:01,236 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:58:01,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:58:00" (1/3) ... [2022-12-13 20:58:01,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a753578 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:58:01, skipping insertion in model container [2022-12-13 20:58:01,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:58:00" (2/3) ... [2022-12-13 20:58:01,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a753578 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:58:01, skipping insertion in model container [2022-12-13 20:58:01,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:58:01" (3/3) ... [2022-12-13 20:58:01,238 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2022-12-13 20:58:01,251 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:58:01,251 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 20:58:01,296 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:58:01,301 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;@4772b92f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:58:01,301 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 20:58:01,305 INFO L276 IsEmpty]: Start isEmpty. Operand has 250 states, 248 states have (on average 1.7258064516129032) internal successors, (428), 249 states have internal predecessors, (428), 0 states have call successors, (0), 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 20:58:01,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-12-13 20:58:01,315 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:58:01,316 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] [2022-12-13 20:58:01,317 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:58:01,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:58:01,322 INFO L85 PathProgramCache]: Analyzing trace with hash 680840216, now seen corresponding path program 1 times [2022-12-13 20:58:01,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:58:01,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409106702] [2022-12-13 20:58:01,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:01,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:58:01,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:01,808 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 20:58:01,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:58:01,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409106702] [2022-12-13 20:58:01,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409106702] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:58:01,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:58:01,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 20:58:01,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201680554] [2022-12-13 20:58:01,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:58:01,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 20:58:01,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:58:01,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 20:58:01,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:58:01,846 INFO L87 Difference]: Start difference. First operand has 250 states, 248 states have (on average 1.7258064516129032) internal successors, (428), 249 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 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 20:58:02,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:58:02,244 INFO L93 Difference]: Finished difference Result 1120 states and 1817 transitions. [2022-12-13 20:58:02,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 20:58:02,246 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2022-12-13 20:58:02,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:58:02,263 INFO L225 Difference]: With dead ends: 1120 [2022-12-13 20:58:02,263 INFO L226 Difference]: Without dead ends: 984 [2022-12-13 20:58:02,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-12-13 20:58:02,270 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 4180 mSDsluCounter, 3265 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4180 SdHoareTripleChecker+Valid, 3700 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:58:02,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4180 Valid, 3700 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:58:02,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2022-12-13 20:58:02,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 382. [2022-12-13 20:58:02,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 1.4986876640419948) internal successors, (571), 381 states have internal predecessors, (571), 0 states have call successors, (0), 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 20:58:02,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 571 transitions. [2022-12-13 20:58:02,342 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 571 transitions. Word has length 96 [2022-12-13 20:58:02,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:58:02,343 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 571 transitions. [2022-12-13 20:58:02,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 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 20:58:02,343 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 571 transitions. [2022-12-13 20:58:02,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-12-13 20:58:02,344 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:58:02,345 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] [2022-12-13 20:58:02,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 20:58:02,345 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:58:02,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:58:02,345 INFO L85 PathProgramCache]: Analyzing trace with hash -693931319, now seen corresponding path program 1 times [2022-12-13 20:58:02,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:58:02,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441173291] [2022-12-13 20:58:02,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:02,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:58:02,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:02,586 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 20:58:02,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:58:02,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441173291] [2022-12-13 20:58:02,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441173291] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:58:02,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:58:02,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 20:58:02,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291264894] [2022-12-13 20:58:02,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:58:02,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 20:58:02,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:58:02,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 20:58:02,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:58:02,588 INFO L87 Difference]: Start difference. First operand 382 states and 571 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:58:03,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:58:03,059 INFO L93 Difference]: Finished difference Result 1909 states and 2955 transitions. [2022-12-13 20:58:03,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 20:58:03,059 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-12-13 20:58:03,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:58:03,063 INFO L225 Difference]: With dead ends: 1909 [2022-12-13 20:58:03,063 INFO L226 Difference]: Without dead ends: 1623 [2022-12-13 20:58:03,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-12-13 20:58:03,065 INFO L413 NwaCegarLoop]: 721 mSDtfsCounter, 1643 mSDsluCounter, 1651 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1643 SdHoareTripleChecker+Valid, 2372 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 20:58:03,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1643 Valid, 2372 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 20:58:03,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2022-12-13 20:58:03,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 1613. [2022-12-13 20:58:03,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1613 states, 1612 states have (on average 1.5446650124069479) internal successors, (2490), 1612 states have internal predecessors, (2490), 0 states have call successors, (0), 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 20:58:03,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1613 states to 1613 states and 2490 transitions. [2022-12-13 20:58:03,197 INFO L78 Accepts]: Start accepts. Automaton has 1613 states and 2490 transitions. Word has length 97 [2022-12-13 20:58:03,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:58:03,197 INFO L495 AbstractCegarLoop]: Abstraction has 1613 states and 2490 transitions. [2022-12-13 20:58:03,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:58:03,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1613 states and 2490 transitions. [2022-12-13 20:58:03,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-13 20:58:03,200 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:58:03,200 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] [2022-12-13 20:58:03,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 20:58:03,200 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:58:03,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:58:03,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1453946111, now seen corresponding path program 1 times [2022-12-13 20:58:03,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:58:03,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333911320] [2022-12-13 20:58:03,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:03,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:58:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:03,297 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 20:58:03,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:58:03,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333911320] [2022-12-13 20:58:03,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333911320] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:58:03,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:58:03,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:58:03,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45941913] [2022-12-13 20:58:03,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:58:03,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:58:03,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:58:03,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:58:03,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:58:03,298 INFO L87 Difference]: Start difference. First operand 1613 states and 2490 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:58:03,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:58:03,850 INFO L93 Difference]: Finished difference Result 4341 states and 6773 transitions. [2022-12-13 20:58:03,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:58:03,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-12-13 20:58:03,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:58:03,856 INFO L225 Difference]: With dead ends: 4341 [2022-12-13 20:58:03,856 INFO L226 Difference]: Without dead ends: 2815 [2022-12-13 20:58:03,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:58:03,859 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 1367 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1367 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:58:03,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1367 Valid, 344 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 20:58:03,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2815 states. [2022-12-13 20:58:04,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2815 to 2813. [2022-12-13 20:58:04,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2813 states, 2812 states have (on average 1.5526315789473684) internal successors, (4366), 2812 states have internal predecessors, (4366), 0 states have call successors, (0), 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 20:58:04,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2813 states to 2813 states and 4366 transitions. [2022-12-13 20:58:04,101 INFO L78 Accepts]: Start accepts. Automaton has 2813 states and 4366 transitions. Word has length 98 [2022-12-13 20:58:04,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:58:04,101 INFO L495 AbstractCegarLoop]: Abstraction has 2813 states and 4366 transitions. [2022-12-13 20:58:04,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:58:04,101 INFO L276 IsEmpty]: Start isEmpty. Operand 2813 states and 4366 transitions. [2022-12-13 20:58:04,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-13 20:58:04,102 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:58:04,103 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] [2022-12-13 20:58:04,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 20:58:04,103 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:58:04,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:58:04,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1726044558, now seen corresponding path program 1 times [2022-12-13 20:58:04,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:58:04,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377536186] [2022-12-13 20:58:04,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:04,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:58:04,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:04,210 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 20:58:04,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:58:04,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377536186] [2022-12-13 20:58:04,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377536186] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:58:04,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:58:04,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:58:04,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232938111] [2022-12-13 20:58:04,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:58:04,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:58:04,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:58:04,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:58:04,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:58:04,213 INFO L87 Difference]: Start difference. First operand 2813 states and 4366 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:58:04,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:58:04,919 INFO L93 Difference]: Finished difference Result 7797 states and 12184 transitions. [2022-12-13 20:58:04,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:58:04,920 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-12-13 20:58:04,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:58:04,938 INFO L225 Difference]: With dead ends: 7797 [2022-12-13 20:58:04,938 INFO L226 Difference]: Without dead ends: 5101 [2022-12-13 20:58:04,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:58:04,944 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 1329 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1329 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:58:04,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1329 Valid, 346 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 20:58:04,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5101 states. [2022-12-13 20:58:05,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5101 to 5099. [2022-12-13 20:58:05,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5099 states, 5098 states have (on average 1.5545311887014515) internal successors, (7925), 5098 states have internal predecessors, (7925), 0 states have call successors, (0), 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 20:58:05,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5099 states to 5099 states and 7925 transitions. [2022-12-13 20:58:05,480 INFO L78 Accepts]: Start accepts. Automaton has 5099 states and 7925 transitions. Word has length 98 [2022-12-13 20:58:05,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:58:05,480 INFO L495 AbstractCegarLoop]: Abstraction has 5099 states and 7925 transitions. [2022-12-13 20:58:05,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:58:05,480 INFO L276 IsEmpty]: Start isEmpty. Operand 5099 states and 7925 transitions. [2022-12-13 20:58:05,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-13 20:58:05,482 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:58:05,482 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] [2022-12-13 20:58:05,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 20:58:05,483 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:58:05,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:58:05,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1050081644, now seen corresponding path program 1 times [2022-12-13 20:58:05,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:58:05,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070502422] [2022-12-13 20:58:05,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:05,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:58:05,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:05,576 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 20:58:05,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:58:05,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070502422] [2022-12-13 20:58:05,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070502422] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:58:05,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:58:05,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:58:05,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297069195] [2022-12-13 20:58:05,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:58:05,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:58:05,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:58:05,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:58:05,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:58:05,579 INFO L87 Difference]: Start difference. First operand 5099 states and 7925 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:58:06,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:58:06,638 INFO L93 Difference]: Finished difference Result 14365 states and 22445 transitions. [2022-12-13 20:58:06,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:58:06,638 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-12-13 20:58:06,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:58:06,664 INFO L225 Difference]: With dead ends: 14365 [2022-12-13 20:58:06,665 INFO L226 Difference]: Without dead ends: 9461 [2022-12-13 20:58:06,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:58:06,673 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 1279 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1279 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:58:06,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1279 Valid, 359 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 20:58:06,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9461 states. [2022-12-13 20:58:07,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9461 to 9459. [2022-12-13 20:58:07,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9459 states, 9458 states have (on average 1.5558257559737787) internal successors, (14715), 9458 states have internal predecessors, (14715), 0 states have call successors, (0), 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 20:58:07,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9459 states to 9459 states and 14715 transitions. [2022-12-13 20:58:07,502 INFO L78 Accepts]: Start accepts. Automaton has 9459 states and 14715 transitions. Word has length 98 [2022-12-13 20:58:07,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:58:07,502 INFO L495 AbstractCegarLoop]: Abstraction has 9459 states and 14715 transitions. [2022-12-13 20:58:07,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:58:07,502 INFO L276 IsEmpty]: Start isEmpty. Operand 9459 states and 14715 transitions. [2022-12-13 20:58:07,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-13 20:58:07,504 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:58:07,504 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] [2022-12-13 20:58:07,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 20:58:07,504 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:58:07,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:58:07,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1204309923, now seen corresponding path program 1 times [2022-12-13 20:58:07,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:58:07,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270396853] [2022-12-13 20:58:07,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:07,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:58:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:07,628 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 20:58:07,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:58:07,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270396853] [2022-12-13 20:58:07,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270396853] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:58:07,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:58:07,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:58:07,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391826070] [2022-12-13 20:58:07,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:58:07,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:58:07,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:58:07,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:58:07,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:58:07,630 INFO L87 Difference]: Start difference. First operand 9459 states and 14715 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:58:09,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:58:09,656 INFO L93 Difference]: Finished difference Result 27518 states and 42910 transitions. [2022-12-13 20:58:09,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:58:09,656 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-12-13 20:58:09,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:58:09,687 INFO L225 Difference]: With dead ends: 27518 [2022-12-13 20:58:09,687 INFO L226 Difference]: Without dead ends: 18213 [2022-12-13 20:58:09,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:58:09,695 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 1285 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1285 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:58:09,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1285 Valid, 348 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 20:58:09,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18213 states. [2022-12-13 20:58:11,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18213 to 18211. [2022-12-13 20:58:11,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18211 states, 18210 states have (on average 1.5523887973640857) internal successors, (28269), 18210 states have internal predecessors, (28269), 0 states have call successors, (0), 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 20:58:11,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18211 states to 18211 states and 28269 transitions. [2022-12-13 20:58:11,327 INFO L78 Accepts]: Start accepts. Automaton has 18211 states and 28269 transitions. Word has length 98 [2022-12-13 20:58:11,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:58:11,327 INFO L495 AbstractCegarLoop]: Abstraction has 18211 states and 28269 transitions. [2022-12-13 20:58:11,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:58:11,327 INFO L276 IsEmpty]: Start isEmpty. Operand 18211 states and 28269 transitions. [2022-12-13 20:58:11,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-13 20:58:11,330 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:58:11,330 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] [2022-12-13 20:58:11,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 20:58:11,331 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:58:11,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:58:11,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1872069296, now seen corresponding path program 1 times [2022-12-13 20:58:11,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:58:11,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943657610] [2022-12-13 20:58:11,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:11,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:58:11,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:11,417 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 20:58:11,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:58:11,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943657610] [2022-12-13 20:58:11,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943657610] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:58:11,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:58:11,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:58:11,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353024539] [2022-12-13 20:58:11,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:58:11,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:58:11,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:58:11,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:58:11,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:58:11,419 INFO L87 Difference]: Start difference. First operand 18211 states and 28269 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:58:15,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:58:15,103 INFO L93 Difference]: Finished difference Result 54168 states and 84194 transitions. [2022-12-13 20:58:15,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:58:15,104 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-12-13 20:58:15,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:58:15,158 INFO L225 Difference]: With dead ends: 54168 [2022-12-13 20:58:15,158 INFO L226 Difference]: Without dead ends: 36021 [2022-12-13 20:58:15,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:58:15,172 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 1371 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1371 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:58:15,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1371 Valid, 344 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 20:58:15,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36021 states. [2022-12-13 20:58:18,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36021 to 36019. [2022-12-13 20:58:18,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36019 states, 36018 states have (on average 1.5457271364317842) internal successors, (55674), 36018 states have internal predecessors, (55674), 0 states have call successors, (0), 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 20:58:18,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36019 states to 36019 states and 55674 transitions. [2022-12-13 20:58:18,495 INFO L78 Accepts]: Start accepts. Automaton has 36019 states and 55674 transitions. Word has length 98 [2022-12-13 20:58:18,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:58:18,495 INFO L495 AbstractCegarLoop]: Abstraction has 36019 states and 55674 transitions. [2022-12-13 20:58:18,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:58:18,496 INFO L276 IsEmpty]: Start isEmpty. Operand 36019 states and 55674 transitions. [2022-12-13 20:58:18,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-12-13 20:58:18,500 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:58:18,501 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] [2022-12-13 20:58:18,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 20:58:18,501 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:58:18,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:58:18,501 INFO L85 PathProgramCache]: Analyzing trace with hash 944001903, now seen corresponding path program 1 times [2022-12-13 20:58:18,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:58:18,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129374244] [2022-12-13 20:58:18,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:18,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:58:18,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:18,572 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 20:58:18,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:58:18,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129374244] [2022-12-13 20:58:18,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129374244] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:58:18,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:58:18,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:58:18,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830870034] [2022-12-13 20:58:18,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:58:18,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:58:18,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:58:18,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:58:18,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:58:18,574 INFO L87 Difference]: Start difference. First operand 36019 states and 55674 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:58:24,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:58:24,725 INFO L93 Difference]: Finished difference Result 102359 states and 158350 transitions. [2022-12-13 20:58:24,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:58:24,726 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-12-13 20:58:24,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:58:24,865 INFO L225 Difference]: With dead ends: 102359 [2022-12-13 20:58:24,865 INFO L226 Difference]: Without dead ends: 66420 [2022-12-13 20:58:24,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:58:24,885 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 1404 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1404 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:58:24,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1404 Valid, 347 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 20:58:24,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66420 states. [2022-12-13 20:58:30,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66420 to 66418. [2022-12-13 20:58:30,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66418 states, 66417 states have (on average 1.541472815694777) internal successors, (102380), 66417 states have internal predecessors, (102380), 0 states have call successors, (0), 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 20:58:30,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66418 states to 66418 states and 102380 transitions. [2022-12-13 20:58:30,919 INFO L78 Accepts]: Start accepts. Automaton has 66418 states and 102380 transitions. Word has length 99 [2022-12-13 20:58:30,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:58:30,919 INFO L495 AbstractCegarLoop]: Abstraction has 66418 states and 102380 transitions. [2022-12-13 20:58:30,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:58:30,920 INFO L276 IsEmpty]: Start isEmpty. Operand 66418 states and 102380 transitions. [2022-12-13 20:58:30,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-12-13 20:58:30,927 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:58:30,927 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] [2022-12-13 20:58:30,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 20:58:30,927 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:58:30,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:58:30,928 INFO L85 PathProgramCache]: Analyzing trace with hash -835025571, now seen corresponding path program 1 times [2022-12-13 20:58:30,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:58:30,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394374313] [2022-12-13 20:58:30,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:30,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:58:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:31,105 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 20:58:31,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:58:31,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394374313] [2022-12-13 20:58:31,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394374313] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:58:31,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:58:31,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 20:58:31,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879882379] [2022-12-13 20:58:31,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:58:31,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:58:31,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:58:31,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:58:31,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:58:31,107 INFO L87 Difference]: Start difference. First operand 66418 states and 102380 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:58:43,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:58:43,563 INFO L93 Difference]: Finished difference Result 132468 states and 203533 transitions. [2022-12-13 20:58:43,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:58:43,564 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-12-13 20:58:43,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:58:43,739 INFO L225 Difference]: With dead ends: 132468 [2022-12-13 20:58:43,739 INFO L226 Difference]: Without dead ends: 132466 [2022-12-13 20:58:43,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:58:43,763 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 344 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:58:43,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 1421 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:58:43,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132466 states. [2022-12-13 20:58:51,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132466 to 67826. [2022-12-13 20:58:51,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67826 states, 67825 states have (on average 1.53023221525986) internal successors, (103788), 67825 states have internal predecessors, (103788), 0 states have call successors, (0), 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 20:58:51,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67826 states to 67826 states and 103788 transitions. [2022-12-13 20:58:51,713 INFO L78 Accepts]: Start accepts. Automaton has 67826 states and 103788 transitions. Word has length 99 [2022-12-13 20:58:51,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:58:51,713 INFO L495 AbstractCegarLoop]: Abstraction has 67826 states and 103788 transitions. [2022-12-13 20:58:51,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:58:51,713 INFO L276 IsEmpty]: Start isEmpty. Operand 67826 states and 103788 transitions. [2022-12-13 20:58:51,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-12-13 20:58:51,720 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:58:51,721 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] [2022-12-13 20:58:51,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 20:58:51,721 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:58:51,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:58:51,721 INFO L85 PathProgramCache]: Analyzing trace with hash 210130591, now seen corresponding path program 1 times [2022-12-13 20:58:51,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:58:51,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592101414] [2022-12-13 20:58:51,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:58:51,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:58:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:58:51,963 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 20:58:51,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:58:51,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592101414] [2022-12-13 20:58:51,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592101414] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:58:51,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:58:51,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 20:58:51,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797489221] [2022-12-13 20:58:51,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:58:51,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 20:58:51,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:58:51,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 20:58:51,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-13 20:58:51,965 INFO L87 Difference]: Start difference. First operand 67826 states and 103788 transitions. Second operand has 10 states, 10 states have (on average 10.0) internal successors, (100), 9 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:59:23,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:59:23,667 INFO L93 Difference]: Finished difference Result 306928 states and 466350 transitions. [2022-12-13 20:59:23,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 20:59:23,668 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 9 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2022-12-13 20:59:23,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:59:24,091 INFO L225 Difference]: With dead ends: 306928 [2022-12-13 20:59:24,091 INFO L226 Difference]: Without dead ends: 262081 [2022-12-13 20:59:24,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2022-12-13 20:59:24,151 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 2875 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 1246 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2875 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 20:59:24,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2875 Valid, 1632 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1246 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 20:59:24,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262081 states. [2022-12-13 20:59:34,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262081 to 68251. [2022-12-13 20:59:34,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68251 states, 68250 states have (on average 1.5292454212454212) internal successors, (104371), 68250 states have internal predecessors, (104371), 0 states have call successors, (0), 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 20:59:35,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68251 states to 68251 states and 104371 transitions. [2022-12-13 20:59:35,027 INFO L78 Accepts]: Start accepts. Automaton has 68251 states and 104371 transitions. Word has length 100 [2022-12-13 20:59:35,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:59:35,027 INFO L495 AbstractCegarLoop]: Abstraction has 68251 states and 104371 transitions. [2022-12-13 20:59:35,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 9 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:59:35,027 INFO L276 IsEmpty]: Start isEmpty. Operand 68251 states and 104371 transitions. [2022-12-13 20:59:35,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-12-13 20:59:35,036 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:59:35,036 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] [2022-12-13 20:59:35,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 20:59:35,036 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:59:35,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:59:35,037 INFO L85 PathProgramCache]: Analyzing trace with hash 2092316351, now seen corresponding path program 1 times [2022-12-13 20:59:35,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:59:35,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716737184] [2022-12-13 20:59:35,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:59:35,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:59:35,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:59:35,167 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 20:59:35,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:59:35,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716737184] [2022-12-13 20:59:35,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716737184] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:59:35,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:59:35,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:59:35,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080347414] [2022-12-13 20:59:35,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:59:35,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:59:35,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:59:35,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:59:35,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:59:35,169 INFO L87 Difference]: Start difference. First operand 68251 states and 104371 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:59:52,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:59:52,975 INFO L93 Difference]: Finished difference Result 192991 states and 294517 transitions. [2022-12-13 20:59:52,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:59:52,976 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2022-12-13 20:59:52,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:59:53,159 INFO L225 Difference]: With dead ends: 192991 [2022-12-13 20:59:53,159 INFO L226 Difference]: Without dead ends: 126941 [2022-12-13 20:59:53,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:59:53,202 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 236 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:59:53,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 739 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:59:53,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126941 states. [2022-12-13 21:00:11,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126941 to 126939. [2022-12-13 21:00:11,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126939 states, 126938 states have (on average 1.5179930359703162) internal successors, (192691), 126938 states have internal predecessors, (192691), 0 states have call successors, (0), 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 21:00:11,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126939 states to 126939 states and 192691 transitions. [2022-12-13 21:00:11,330 INFO L78 Accepts]: Start accepts. Automaton has 126939 states and 192691 transitions. Word has length 100 [2022-12-13 21:00:11,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:00:11,330 INFO L495 AbstractCegarLoop]: Abstraction has 126939 states and 192691 transitions. [2022-12-13 21:00:11,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:00:11,330 INFO L276 IsEmpty]: Start isEmpty. Operand 126939 states and 192691 transitions. [2022-12-13 21:00:11,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 21:00:11,338 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:00:11,339 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] [2022-12-13 21:00:11,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 21:00:11,339 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:00:11,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:00:11,339 INFO L85 PathProgramCache]: Analyzing trace with hash -729942331, now seen corresponding path program 1 times [2022-12-13 21:00:11,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:00:11,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670042756] [2022-12-13 21:00:11,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:00:11,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:00:11,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:00:11,384 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 21:00:11,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:00:11,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670042756] [2022-12-13 21:00:11,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670042756] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:00:11,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:00:11,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:00:11,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957011894] [2022-12-13 21:00:11,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:00:11,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:00:11,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:00:11,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:00:11,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:00:11,386 INFO L87 Difference]: Start difference. First operand 126939 states and 192691 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:00:34,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:00:34,252 INFO L93 Difference]: Finished difference Result 234343 states and 355759 transitions. [2022-12-13 21:00:34,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:00:34,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2022-12-13 21:00:34,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:00:34,487 INFO L225 Difference]: With dead ends: 234343 [2022-12-13 21:00:34,487 INFO L226 Difference]: Without dead ends: 159035 [2022-12-13 21:00:34,541 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 21:00:34,541 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 218 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:00:34,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 828 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:00:34,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159035 states. [2022-12-13 21:00:57,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159035 to 157933. [2022-12-13 21:00:57,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157933 states, 157932 states have (on average 1.5022161436567636) internal successors, (237248), 157932 states have internal predecessors, (237248), 0 states have call successors, (0), 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 21:00:58,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157933 states to 157933 states and 237248 transitions. [2022-12-13 21:00:58,135 INFO L78 Accepts]: Start accepts. Automaton has 157933 states and 237248 transitions. Word has length 101 [2022-12-13 21:00:58,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:00:58,136 INFO L495 AbstractCegarLoop]: Abstraction has 157933 states and 237248 transitions. [2022-12-13 21:00:58,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:00:58,136 INFO L276 IsEmpty]: Start isEmpty. Operand 157933 states and 237248 transitions. [2022-12-13 21:00:58,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 21:00:58,146 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:00:58,146 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] [2022-12-13 21:00:58,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 21:00:58,146 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:00:58,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:00:58,147 INFO L85 PathProgramCache]: Analyzing trace with hash -482846716, now seen corresponding path program 1 times [2022-12-13 21:00:58,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:00:58,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98578513] [2022-12-13 21:00:58,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:00:58,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:00:58,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:00:58,299 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 21:00:58,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:00:58,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98578513] [2022-12-13 21:00:58,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98578513] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:00:58,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:00:58,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:00:58,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863040142] [2022-12-13 21:00:58,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:00:58,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:00:58,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:00:58,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:00:58,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:00:58,301 INFO L87 Difference]: Start difference. First operand 157933 states and 237248 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:01:32,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:01:32,348 INFO L93 Difference]: Finished difference Result 371110 states and 557536 transitions. [2022-12-13 21:01:32,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:01:32,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2022-12-13 21:01:32,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:01:32,720 INFO L225 Difference]: With dead ends: 371110 [2022-12-13 21:01:32,720 INFO L226 Difference]: Without dead ends: 224782 [2022-12-13 21:01:32,801 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 21:01:32,801 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 246 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:01:32,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 670 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:01:32,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224782 states. [2022-12-13 21:02:02,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224782 to 156426. [2022-12-13 21:02:02,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156426 states, 156425 states have (on average 1.490957327792872) internal successors, (233223), 156425 states have internal predecessors, (233223), 0 states have call successors, (0), 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 21:02:02,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156426 states to 156426 states and 233223 transitions. [2022-12-13 21:02:02,618 INFO L78 Accepts]: Start accepts. Automaton has 156426 states and 233223 transitions. Word has length 101 [2022-12-13 21:02:02,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:02:02,619 INFO L495 AbstractCegarLoop]: Abstraction has 156426 states and 233223 transitions. [2022-12-13 21:02:02,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:02:02,619 INFO L276 IsEmpty]: Start isEmpty. Operand 156426 states and 233223 transitions. [2022-12-13 21:02:02,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 21:02:02,629 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:02:02,629 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] [2022-12-13 21:02:02,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 21:02:02,629 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:02:02,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:02:02,630 INFO L85 PathProgramCache]: Analyzing trace with hash 834081733, now seen corresponding path program 1 times [2022-12-13 21:02:02,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:02:02,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005264060] [2022-12-13 21:02:02,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:02:02,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:02:02,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:02:02,673 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 21:02:02,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:02:02,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005264060] [2022-12-13 21:02:02,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005264060] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:02:02,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:02:02,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:02:02,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806207631] [2022-12-13 21:02:02,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:02:02,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:02:02,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:02:02,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:02:02,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:02:02,675 INFO L87 Difference]: Start difference. First operand 156426 states and 233223 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:02:39,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:02:39,615 INFO L93 Difference]: Finished difference Result 351141 states and 522663 transitions. [2022-12-13 21:02:39,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:02:39,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2022-12-13 21:02:39,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:02:40,033 INFO L225 Difference]: With dead ends: 351141 [2022-12-13 21:02:40,033 INFO L226 Difference]: Without dead ends: 206607 [2022-12-13 21:02:40,106 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 21:02:40,107 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 238 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:02:40,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 655 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:02:40,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206607 states. [2022-12-13 21:03:18,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206607 to 205581. [2022-12-13 21:03:19,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205581 states, 205580 states have (on average 1.4713153030450432) internal successors, (302473), 205580 states have internal predecessors, (302473), 0 states have call successors, (0), 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 21:03:19,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205581 states to 205581 states and 302473 transitions. [2022-12-13 21:03:19,392 INFO L78 Accepts]: Start accepts. Automaton has 205581 states and 302473 transitions. Word has length 101 [2022-12-13 21:03:19,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:03:19,392 INFO L495 AbstractCegarLoop]: Abstraction has 205581 states and 302473 transitions. [2022-12-13 21:03:19,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:03:19,392 INFO L276 IsEmpty]: Start isEmpty. Operand 205581 states and 302473 transitions. [2022-12-13 21:03:19,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 21:03:19,408 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:03:19,408 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] [2022-12-13 21:03:19,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 21:03:19,409 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:03:19,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:19,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1562401355, now seen corresponding path program 1 times [2022-12-13 21:03:19,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:03:19,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99085169] [2022-12-13 21:03:19,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:19,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:03:19,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:19,446 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 21:03:19,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:03:19,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99085169] [2022-12-13 21:03:19,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99085169] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:03:19,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:03:19,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:03:19,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962873911] [2022-12-13 21:03:19,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:03:19,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:03:19,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:03:19,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:03:19,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:03:19,448 INFO L87 Difference]: Start difference. First operand 205581 states and 302473 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:04:01,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:04:01,600 INFO L93 Difference]: Finished difference Result 278517 states and 409031 transitions. [2022-12-13 21:04:01,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:04:01,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2022-12-13 21:04:01,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:04:02,047 INFO L225 Difference]: With dead ends: 278517 [2022-12-13 21:04:02,047 INFO L226 Difference]: Without dead ends: 226099 [2022-12-13 21:04:02,102 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 21:04:02,103 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 199 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:04:02,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 656 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:04:02,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226099 states. [2022-12-13 21:04:43,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226099 to 202097. [2022-12-13 21:04:43,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202097 states, 202096 states have (on average 1.4518892011717204) internal successors, (293421), 202096 states have internal predecessors, (293421), 0 states have call successors, (0), 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 21:04:43,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202097 states to 202097 states and 293421 transitions. [2022-12-13 21:04:43,831 INFO L78 Accepts]: Start accepts. Automaton has 202097 states and 293421 transitions. Word has length 101 [2022-12-13 21:04:43,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:04:43,831 INFO L495 AbstractCegarLoop]: Abstraction has 202097 states and 293421 transitions. [2022-12-13 21:04:43,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:04:43,831 INFO L276 IsEmpty]: Start isEmpty. Operand 202097 states and 293421 transitions. [2022-12-13 21:04:43,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 21:04:43,845 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:04:43,845 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] [2022-12-13 21:04:43,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 21:04:43,846 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:04:43,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:04:43,846 INFO L85 PathProgramCache]: Analyzing trace with hash 792119876, now seen corresponding path program 1 times [2022-12-13 21:04:43,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:04:43,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281665444] [2022-12-13 21:04:43,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:04:43,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:04:43,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:04:43,886 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 21:04:43,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:04:43,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281665444] [2022-12-13 21:04:43,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281665444] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:04:43,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:04:43,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:04:43,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819455900] [2022-12-13 21:04:43,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:04:43,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:04:43,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:04:43,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:04:43,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:04:43,888 INFO L87 Difference]: Start difference. First operand 202097 states and 293421 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:05:28,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:05:28,581 INFO L93 Difference]: Finished difference Result 313783 states and 455171 transitions. [2022-12-13 21:05:28,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:05:28,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2022-12-13 21:05:28,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:05:28,931 INFO L225 Difference]: With dead ends: 313783 [2022-12-13 21:05:28,931 INFO L226 Difference]: Without dead ends: 217173 [2022-12-13 21:05:29,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:05:29,005 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 205 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:05:29,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 651 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:05:29,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217173 states. [2022-12-13 21:06:12,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217173 to 215443. [2022-12-13 21:06:12,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215443 states, 215442 states have (on average 1.4287279174905543) internal successors, (307808), 215442 states have internal predecessors, (307808), 0 states have call successors, (0), 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 21:06:12,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215443 states to 215443 states and 307808 transitions. [2022-12-13 21:06:12,588 INFO L78 Accepts]: Start accepts. Automaton has 215443 states and 307808 transitions. Word has length 101 [2022-12-13 21:06:12,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:06:12,588 INFO L495 AbstractCegarLoop]: Abstraction has 215443 states and 307808 transitions. [2022-12-13 21:06:12,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:06:12,588 INFO L276 IsEmpty]: Start isEmpty. Operand 215443 states and 307808 transitions. [2022-12-13 21:06:12,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 21:06:12,704 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:06:12,704 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] [2022-12-13 21:06:12,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 21:06:12,704 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:06:12,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:06:12,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1783241381, now seen corresponding path program 1 times [2022-12-13 21:06:12,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:06:12,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744031990] [2022-12-13 21:06:12,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:06:12,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:06:12,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:06:12,807 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 21:06:12,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:06:12,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744031990] [2022-12-13 21:06:12,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744031990] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:06:12,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:06:12,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 21:06:12,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281012070] [2022-12-13 21:06:12,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:06:12,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:06:12,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:06:12,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:06:12,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:06:12,808 INFO L87 Difference]: Start difference. First operand 215443 states and 307808 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:07:54,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:07:54,721 INFO L93 Difference]: Finished difference Result 587668 states and 845267 transitions. [2022-12-13 21:07:54,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 21:07:54,722 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2022-12-13 21:07:54,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:07:55,646 INFO L225 Difference]: With dead ends: 587668 [2022-12-13 21:07:55,646 INFO L226 Difference]: Without dead ends: 524990 [2022-12-13 21:07:55,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 21:07:55,779 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 2727 mSDsluCounter, 1782 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2727 SdHoareTripleChecker+Valid, 2300 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:07:55,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2727 Valid, 2300 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:07:56,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524990 states. [2022-12-13 21:08:58,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524990 to 277601. [2022-12-13 21:08:58,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277601 states, 277600 states have (on average 1.4295533141210375) internal successors, (396844), 277600 states have internal predecessors, (396844), 0 states have call successors, (0), 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 21:08:59,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277601 states to 277601 states and 396844 transitions. [2022-12-13 21:08:59,002 INFO L78 Accepts]: Start accepts. Automaton has 277601 states and 396844 transitions. Word has length 101 [2022-12-13 21:08:59,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:08:59,002 INFO L495 AbstractCegarLoop]: Abstraction has 277601 states and 396844 transitions. [2022-12-13 21:08:59,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:08:59,003 INFO L276 IsEmpty]: Start isEmpty. Operand 277601 states and 396844 transitions. [2022-12-13 21:08:59,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 21:08:59,018 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:08:59,019 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] [2022-12-13 21:08:59,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 21:08:59,019 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:08:59,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:08:59,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1811436836, now seen corresponding path program 1 times [2022-12-13 21:08:59,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:08:59,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364420339] [2022-12-13 21:08:59,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:08:59,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:08:59,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:08:59,060 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 21:08:59,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:08:59,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364420339] [2022-12-13 21:08:59,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364420339] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:08:59,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:08:59,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:08:59,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731321452] [2022-12-13 21:08:59,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:08:59,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:08:59,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:08:59,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:08:59,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:08:59,062 INFO L87 Difference]: Start difference. First operand 277601 states and 396844 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)