./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.10.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aa78edb-aa7b-44bc-8198-ddff93c16970/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aa78edb-aa7b-44bc-8198-ddff93c16970/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aa78edb-aa7b-44bc-8198-ddff93c16970/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aa78edb-aa7b-44bc-8198-ddff93c16970/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.10.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aa78edb-aa7b-44bc-8198-ddff93c16970/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aa78edb-aa7b-44bc-8198-ddff93c16970/bin/uautomizer-Dbtcem3rbc --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 3bd63f2e85879a3b5cd3d111848f55574da866e1b794c0e510a03ddd791b817a --- 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-5e519f3 [2022-11-02 21:03:56,983 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:03:56,985 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:03:57,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:03:57,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:03:57,034 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:03:57,037 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:03:57,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:03:57,044 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:03:57,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:03:57,052 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:03:57,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:03:57,054 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:03:57,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:03:57,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:03:57,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:03:57,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:03:57,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:03:57,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:03:57,066 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:03:57,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:03:57,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:03:57,075 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:03:57,076 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:03:57,084 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:03:57,084 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:03:57,084 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:03:57,086 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:03:57,087 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:03:57,088 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:03:57,089 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:03:57,090 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:03:57,092 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:03:57,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:03:57,095 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:03:57,095 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:03:57,096 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:03:57,097 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:03:57,097 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:03:57,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:03:57,099 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:03:57,103 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aa78edb-aa7b-44bc-8198-ddff93c16970/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 21:03:57,141 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:03:57,141 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:03:57,141 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:03:57,141 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:03:57,146 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:03:57,146 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:03:57,147 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:03:57,147 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:03:57,147 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:03:57,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:03:57,148 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:03:57,148 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:03:57,149 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:03:57,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:03:57,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:03:57,149 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:03:57,149 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:03:57,150 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:03:57,150 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:03:57,150 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:03:57,150 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:03:57,150 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:03:57,150 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:03:57,151 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:03:57,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:03:57,151 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:03:57,152 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:03:57,152 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:03:57,152 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:03:57,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:03:57,152 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:03:57,153 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:03:57,153 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:03:57,153 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aa78edb-aa7b-44bc-8198-ddff93c16970/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aa78edb-aa7b-44bc-8198-ddff93c16970/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3bd63f2e85879a3b5cd3d111848f55574da866e1b794c0e510a03ddd791b817a [2022-11-02 21:03:57,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:03:57,569 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:03:57,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:03:57,574 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:03:57,575 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:03:57,576 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aa78edb-aa7b-44bc-8198-ddff93c16970/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.10.cil-2.c [2022-11-02 21:03:57,642 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aa78edb-aa7b-44bc-8198-ddff93c16970/bin/uautomizer-Dbtcem3rbc/data/28a3c7df4/09a3226a17fc4f629bf3bca5c1beb6df/FLAG5d55be439 [2022-11-02 21:03:58,786 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:03:58,788 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aa78edb-aa7b-44bc-8198-ddff93c16970/sv-benchmarks/c/combinations/Problem05_label44+token_ring.10.cil-2.c [2022-11-02 21:03:58,843 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aa78edb-aa7b-44bc-8198-ddff93c16970/bin/uautomizer-Dbtcem3rbc/data/28a3c7df4/09a3226a17fc4f629bf3bca5c1beb6df/FLAG5d55be439 [2022-11-02 21:03:59,068 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aa78edb-aa7b-44bc-8198-ddff93c16970/bin/uautomizer-Dbtcem3rbc/data/28a3c7df4/09a3226a17fc4f629bf3bca5c1beb6df [2022-11-02 21:03:59,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:03:59,076 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:03:59,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:03:59,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:03:59,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:03:59,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:03:59" (1/1) ... [2022-11-02 21:03:59,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46f455cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:59, skipping insertion in model container [2022-11-02 21:03:59,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:03:59" (1/1) ... [2022-11-02 21:03:59,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:03:59,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:04:01,692 WARN L230 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_2aa78edb-aa7b-44bc-8198-ddff93c16970/sv-benchmarks/c/combinations/Problem05_label44+token_ring.10.cil-2.c[377340,377353] [2022-11-02 21:04:01,728 WARN L230 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_2aa78edb-aa7b-44bc-8198-ddff93c16970/sv-benchmarks/c/combinations/Problem05_label44+token_ring.10.cil-2.c[383339,383352] [2022-11-02 21:04:02,055 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:04:02,069 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:04:03,343 WARN L230 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_2aa78edb-aa7b-44bc-8198-ddff93c16970/sv-benchmarks/c/combinations/Problem05_label44+token_ring.10.cil-2.c[377340,377353] [2022-11-02 21:04:03,354 WARN L230 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_2aa78edb-aa7b-44bc-8198-ddff93c16970/sv-benchmarks/c/combinations/Problem05_label44+token_ring.10.cil-2.c[383339,383352] [2022-11-02 21:04:03,393 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:04:03,469 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:04:03,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:03 WrapperNode [2022-11-02 21:04:03,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:04:03,471 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:04:03,471 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:04:03,471 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:04:03,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:03" (1/1) ... [2022-11-02 21:04:03,563 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:03" (1/1) ... [2022-11-02 21:04:03,894 INFO L138 Inliner]: procedures = 64, calls = 71, calls flagged for inlining = 42, calls inlined = 42, statements flattened = 13083 [2022-11-02 21:04:03,894 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:04:03,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:04:03,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:04:03,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:04:03,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:03" (1/1) ... [2022-11-02 21:04:03,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:03" (1/1) ... [2022-11-02 21:04:03,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:03" (1/1) ... [2022-11-02 21:04:03,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:03" (1/1) ... [2022-11-02 21:04:04,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:03" (1/1) ... [2022-11-02 21:04:04,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:03" (1/1) ... [2022-11-02 21:04:04,531 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:03" (1/1) ... [2022-11-02 21:04:04,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:03" (1/1) ... [2022-11-02 21:04:04,640 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:04:04,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:04:04,641 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:04:04,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:04:04,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:03" (1/1) ... [2022-11-02 21:04:04,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:04:04,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aa78edb-aa7b-44bc-8198-ddff93c16970/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:04,728 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aa78edb-aa7b-44bc-8198-ddff93c16970/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:04:04,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2aa78edb-aa7b-44bc-8198-ddff93c16970/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:04:04,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:04:04,890 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-02 21:04:04,890 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-02 21:04:04,891 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-02 21:04:04,891 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-02 21:04:04,891 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-02 21:04:04,891 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-02 21:04:04,891 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-02 21:04:04,891 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-02 21:04:04,892 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-02 21:04:04,892 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-02 21:04:04,892 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-02 21:04:04,892 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-02 21:04:04,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:04:04,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:04:04,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:04:05,086 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:04:05,089 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:04:14,422 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:04:14,445 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:04:14,445 INFO L300 CfgBuilder]: Removed 14 assume(true) statements. [2022-11-02 21:04:14,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:04:14 BoogieIcfgContainer [2022-11-02 21:04:14,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:04:14,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:04:14,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:04:14,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:04:14,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:03:59" (1/3) ... [2022-11-02 21:04:14,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2173b95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:04:14, skipping insertion in model container [2022-11-02 21:04:14,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:03" (2/3) ... [2022-11-02 21:04:14,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2173b95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:04:14, skipping insertion in model container [2022-11-02 21:04:14,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:04:14" (3/3) ... [2022-11-02 21:04:14,460 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.10.cil-2.c [2022-11-02 21:04:14,482 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:04:14,482 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-02 21:04:14,577 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:04:14,584 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;@66defc48, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:04:14,585 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-02 21:04:14,599 INFO L276 IsEmpty]: Start isEmpty. Operand has 2515 states, 2482 states have (on average 1.8456889605157132) internal successors, (4581), 2485 states have internal predecessors, (4581), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-11-02 21:04:14,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-02 21:04:14,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:14,620 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:14,621 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:14,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:14,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1879597445, now seen corresponding path program 1 times [2022-11-02 21:04:14,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:14,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441717695] [2022-11-02 21:04:14,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:14,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:14,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:15,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:04:15,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:15,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 21:04:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:15,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 21:04:15,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:15,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-02 21:04:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:15,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-02 21:04:15,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:15,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:15,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:15,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441717695] [2022-11-02 21:04:15,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441717695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:15,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:15,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:04:15,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552356717] [2022-11-02 21:04:15,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:15,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:04:15,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:15,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:04:15,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:15,349 INFO L87 Difference]: Start difference. First operand has 2515 states, 2482 states have (on average 1.8456889605157132) internal successors, (4581), 2485 states have internal predecessors, (4581), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:04:17,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:17,416 INFO L93 Difference]: Finished difference Result 5140 states and 9446 transitions. [2022-11-02 21:04:17,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:04:17,419 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-11-02 21:04:17,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:17,446 INFO L225 Difference]: With dead ends: 5140 [2022-11-02 21:04:17,447 INFO L226 Difference]: Without dead ends: 2568 [2022-11-02 21:04:17,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:04:17,459 INFO L413 NwaCegarLoop]: 4589 mSDtfsCounter, 882 mSDsluCounter, 12413 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 17002 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:17,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 17002 Invalid, 674 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-02 21:04:17,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2022-11-02 21:04:17,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 2448. [2022-11-02 21:04:17,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2448 states, 2416 states have (on average 1.830298013245033) internal successors, (4422), 2418 states have internal predecessors, (4422), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-11-02 21:04:17,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2448 states to 2448 states and 4470 transitions. [2022-11-02 21:04:17,659 INFO L78 Accepts]: Start accepts. Automaton has 2448 states and 4470 transitions. Word has length 156 [2022-11-02 21:04:17,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:17,660 INFO L495 AbstractCegarLoop]: Abstraction has 2448 states and 4470 transitions. [2022-11-02 21:04:17,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:04:17,660 INFO L276 IsEmpty]: Start isEmpty. Operand 2448 states and 4470 transitions. [2022-11-02 21:04:17,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-02 21:04:17,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:17,665 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:17,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:04:17,666 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:17,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:17,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1988815353, now seen corresponding path program 1 times [2022-11-02 21:04:17,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:17,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054133222] [2022-11-02 21:04:17,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:17,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:18,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:04:18,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:18,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 21:04:18,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:18,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 21:04:18,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:18,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-02 21:04:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:18,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-02 21:04:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:18,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:18,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:18,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054133222] [2022-11-02 21:04:18,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054133222] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:18,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:18,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:04:18,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813370730] [2022-11-02 21:04:18,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:18,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:04:18,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:18,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:04:18,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:04:18,402 INFO L87 Difference]: Start difference. First operand 2448 states and 4470 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:04:23,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:23,266 INFO L93 Difference]: Finished difference Result 3341 states and 5922 transitions. [2022-11-02 21:04:23,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:04:23,267 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-11-02 21:04:23,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:23,290 INFO L225 Difference]: With dead ends: 3341 [2022-11-02 21:04:23,290 INFO L226 Difference]: Without dead ends: 3032 [2022-11-02 21:04:23,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:04:23,299 INFO L413 NwaCegarLoop]: 4828 mSDtfsCounter, 5220 mSDsluCounter, 17450 mSDsCounter, 0 mSdLazyCounter, 2804 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5237 SdHoareTripleChecker+Valid, 22278 SdHoareTripleChecker+Invalid, 2881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:23,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5237 Valid, 22278 Invalid, 2881 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [77 Valid, 2804 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-02 21:04:23,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2022-11-02 21:04:23,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 2775. [2022-11-02 21:04:23,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2775 states, 2714 states have (on average 1.8043478260869565) internal successors, (4897), 2718 states have internal predecessors, (4897), 45 states have call successors, (45), 12 states have call predecessors, (45), 14 states have return successors, (52), 46 states have call predecessors, (52), 45 states have call successors, (52) [2022-11-02 21:04:23,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 4994 transitions. [2022-11-02 21:04:23,492 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 4994 transitions. Word has length 156 [2022-11-02 21:04:23,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:23,492 INFO L495 AbstractCegarLoop]: Abstraction has 2775 states and 4994 transitions. [2022-11-02 21:04:23,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:04:23,493 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 4994 transitions. [2022-11-02 21:04:23,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-02 21:04:23,497 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:23,498 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:23,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:04:23,498 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:23,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:23,499 INFO L85 PathProgramCache]: Analyzing trace with hash 371374903, now seen corresponding path program 1 times [2022-11-02 21:04:23,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:23,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257997552] [2022-11-02 21:04:23,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:23,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:23,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:23,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:04:23,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:23,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 21:04:23,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:23,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 21:04:23,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:23,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-02 21:04:23,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:23,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-02 21:04:23,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:23,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:23,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:23,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257997552] [2022-11-02 21:04:23,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257997552] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:23,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:23,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:04:23,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769292510] [2022-11-02 21:04:23,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:23,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:04:23,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:23,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:04:23,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:04:23,954 INFO L87 Difference]: Start difference. First operand 2775 states and 4994 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:04:28,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:28,249 INFO L93 Difference]: Finished difference Result 4476 states and 7734 transitions. [2022-11-02 21:04:28,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:04:28,250 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-11-02 21:04:28,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:28,268 INFO L225 Difference]: With dead ends: 4476 [2022-11-02 21:04:28,269 INFO L226 Difference]: Without dead ends: 3842 [2022-11-02 21:04:28,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:04:28,274 INFO L413 NwaCegarLoop]: 4755 mSDtfsCounter, 5260 mSDsluCounter, 17375 mSDsCounter, 0 mSdLazyCounter, 2656 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5277 SdHoareTripleChecker+Valid, 22130 SdHoareTripleChecker+Invalid, 2740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:28,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5277 Valid, 22130 Invalid, 2740 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 2656 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-02 21:04:28,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3842 states. [2022-11-02 21:04:28,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3842 to 3377. [2022-11-02 21:04:28,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3377 states, 3264 states have (on average 1.7634803921568627) internal successors, (5756), 3270 states have internal predecessors, (5756), 83 states have call successors, (83), 24 states have call predecessors, (83), 28 states have return successors, (100), 86 states have call predecessors, (100), 83 states have call successors, (100) [2022-11-02 21:04:28,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3377 states to 3377 states and 5939 transitions. [2022-11-02 21:04:28,587 INFO L78 Accepts]: Start accepts. Automaton has 3377 states and 5939 transitions. Word has length 156 [2022-11-02 21:04:28,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:28,588 INFO L495 AbstractCegarLoop]: Abstraction has 3377 states and 5939 transitions. [2022-11-02 21:04:28,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:04:28,588 INFO L276 IsEmpty]: Start isEmpty. Operand 3377 states and 5939 transitions. [2022-11-02 21:04:28,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-02 21:04:28,593 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:28,594 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:28,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:04:28,594 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:28,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:28,595 INFO L85 PathProgramCache]: Analyzing trace with hash 734841401, now seen corresponding path program 1 times [2022-11-02 21:04:28,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:28,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69209773] [2022-11-02 21:04:28,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:28,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:28,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:04:28,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:28,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 21:04:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:28,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 21:04:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:28,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-02 21:04:28,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:28,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-02 21:04:28,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:28,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:28,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:28,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69209773] [2022-11-02 21:04:28,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69209773] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:28,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:28,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:04:28,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498834126] [2022-11-02 21:04:28,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:28,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:04:28,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:28,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:04:28,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:04:28,913 INFO L87 Difference]: Start difference. First operand 3377 states and 5939 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:04:33,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:33,256 INFO L93 Difference]: Finished difference Result 6696 states and 11267 transitions. [2022-11-02 21:04:33,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:04:33,256 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-11-02 21:04:33,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:33,281 INFO L225 Difference]: With dead ends: 6696 [2022-11-02 21:04:33,282 INFO L226 Difference]: Without dead ends: 5460 [2022-11-02 21:04:33,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:04:33,288 INFO L413 NwaCegarLoop]: 4819 mSDtfsCounter, 5219 mSDsluCounter, 17450 mSDsCounter, 0 mSdLazyCounter, 2800 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5236 SdHoareTripleChecker+Valid, 22269 SdHoareTripleChecker+Invalid, 2880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:33,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5236 Valid, 22269 Invalid, 2880 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2800 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-02 21:04:33,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5460 states. [2022-11-02 21:04:33,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5460 to 4583. [2022-11-02 21:04:33,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4583 states, 4366 states have (on average 1.712322491983509) internal successors, (7476), 4376 states have internal predecessors, (7476), 159 states have call successors, (159), 48 states have call predecessors, (159), 56 states have return successors, (202), 166 states have call predecessors, (202), 159 states have call successors, (202) [2022-11-02 21:04:33,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4583 states to 4583 states and 7837 transitions. [2022-11-02 21:04:33,630 INFO L78 Accepts]: Start accepts. Automaton has 4583 states and 7837 transitions. Word has length 156 [2022-11-02 21:04:33,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:33,630 INFO L495 AbstractCegarLoop]: Abstraction has 4583 states and 7837 transitions. [2022-11-02 21:04:33,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:04:33,631 INFO L276 IsEmpty]: Start isEmpty. Operand 4583 states and 7837 transitions. [2022-11-02 21:04:33,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-02 21:04:33,635 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:33,635 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:33,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:04:33,636 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:33,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:33,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1023660791, now seen corresponding path program 1 times [2022-11-02 21:04:33,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:33,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207548380] [2022-11-02 21:04:33,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:33,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:33,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:33,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:04:33,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:33,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 21:04:33,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:33,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 21:04:33,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:33,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-02 21:04:33,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:33,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-02 21:04:33,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:33,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:33,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:33,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207548380] [2022-11-02 21:04:33,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207548380] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:33,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:33,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:04:33,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121964583] [2022-11-02 21:04:33,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:33,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:04:33,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:33,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:04:33,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:04:33,896 INFO L87 Difference]: Start difference. First operand 4583 states and 7837 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:04:38,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:38,827 INFO L93 Difference]: Finished difference Result 11134 states and 18347 transitions. [2022-11-02 21:04:38,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:04:38,828 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-11-02 21:04:38,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:38,884 INFO L225 Difference]: With dead ends: 11134 [2022-11-02 21:04:38,885 INFO L226 Difference]: Without dead ends: 8692 [2022-11-02 21:04:38,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:04:38,903 INFO L413 NwaCegarLoop]: 4816 mSDtfsCounter, 5219 mSDsluCounter, 17450 mSDsCounter, 0 mSdLazyCounter, 2794 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5236 SdHoareTripleChecker+Valid, 22266 SdHoareTripleChecker+Invalid, 2874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:38,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5236 Valid, 22266 Invalid, 2874 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2794 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-02 21:04:38,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8692 states. [2022-11-02 21:04:39,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8692 to 7001. [2022-11-02 21:04:39,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7001 states, 6576 states have (on average 1.6611922141119222) internal successors, (10924), 6594 states have internal predecessors, (10924), 311 states have call successors, (311), 96 states have call predecessors, (311), 112 states have return successors, (424), 326 states have call predecessors, (424), 311 states have call successors, (424) [2022-11-02 21:04:39,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7001 states to 7001 states and 11659 transitions. [2022-11-02 21:04:39,712 INFO L78 Accepts]: Start accepts. Automaton has 7001 states and 11659 transitions. Word has length 156 [2022-11-02 21:04:39,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:39,713 INFO L495 AbstractCegarLoop]: Abstraction has 7001 states and 11659 transitions. [2022-11-02 21:04:39,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:04:39,714 INFO L276 IsEmpty]: Start isEmpty. Operand 7001 states and 11659 transitions. [2022-11-02 21:04:39,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-02 21:04:39,719 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:39,720 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:39,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:04:39,720 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:39,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:39,722 INFO L85 PathProgramCache]: Analyzing trace with hash 478788217, now seen corresponding path program 1 times [2022-11-02 21:04:39,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:39,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918716204] [2022-11-02 21:04:39,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:39,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:39,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:39,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:04:39,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:39,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 21:04:39,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:39,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 21:04:39,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:40,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-02 21:04:40,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:40,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-02 21:04:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:40,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:40,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:40,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918716204] [2022-11-02 21:04:40,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918716204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:40,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:40,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:04:40,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488689897] [2022-11-02 21:04:40,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:40,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:04:40,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:40,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:04:40,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:04:40,035 INFO L87 Difference]: Start difference. First operand 7001 states and 11659 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:04:45,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:45,508 INFO L93 Difference]: Finished difference Result 20008 states and 32563 transitions. [2022-11-02 21:04:45,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:04:45,509 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-11-02 21:04:45,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:45,574 INFO L225 Difference]: With dead ends: 20008 [2022-11-02 21:04:45,574 INFO L226 Difference]: Without dead ends: 15148 [2022-11-02 21:04:45,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:04:45,597 INFO L413 NwaCegarLoop]: 4813 mSDtfsCounter, 5219 mSDsluCounter, 17450 mSDsCounter, 0 mSdLazyCounter, 2788 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5236 SdHoareTripleChecker+Valid, 22263 SdHoareTripleChecker+Invalid, 2868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:45,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5236 Valid, 22263 Invalid, 2868 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2788 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-02 21:04:45,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15148 states. [2022-11-02 21:04:46,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15148 to 11851. [2022-11-02 21:04:46,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11851 states, 11010 states have (on average 1.620345140781108) internal successors, (17840), 11044 states have internal predecessors, (17840), 615 states have call successors, (615), 192 states have call predecessors, (615), 224 states have return successors, (922), 646 states have call predecessors, (922), 615 states have call successors, (922) [2022-11-02 21:04:46,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11851 states to 11851 states and 19377 transitions. [2022-11-02 21:04:46,913 INFO L78 Accepts]: Start accepts. Automaton has 11851 states and 19377 transitions. Word has length 156 [2022-11-02 21:04:46,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:46,914 INFO L495 AbstractCegarLoop]: Abstraction has 11851 states and 19377 transitions. [2022-11-02 21:04:46,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:04:46,915 INFO L276 IsEmpty]: Start isEmpty. Operand 11851 states and 19377 transitions. [2022-11-02 21:04:46,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-02 21:04:46,923 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:46,923 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:46,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 21:04:46,923 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:46,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:46,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1153948343, now seen corresponding path program 1 times [2022-11-02 21:04:46,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:46,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941238049] [2022-11-02 21:04:46,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:46,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:46,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:47,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:04:47,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:47,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 21:04:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:47,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 21:04:47,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:47,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-02 21:04:47,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:47,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-02 21:04:47,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:47,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:47,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:47,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941238049] [2022-11-02 21:04:47,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941238049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:47,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:47,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:04:47,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613423059] [2022-11-02 21:04:47,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:47,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:04:47,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:47,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:04:47,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:04:47,184 INFO L87 Difference]: Start difference. First operand 11851 states and 19377 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:04:54,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:54,352 INFO L93 Difference]: Finished difference Result 37754 states and 61183 transitions. [2022-11-02 21:04:54,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:04:54,353 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-11-02 21:04:54,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:54,472 INFO L225 Difference]: With dead ends: 37754 [2022-11-02 21:04:54,472 INFO L226 Difference]: Without dead ends: 28044 [2022-11-02 21:04:54,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:04:54,522 INFO L413 NwaCegarLoop]: 4810 mSDtfsCounter, 5219 mSDsluCounter, 17450 mSDsCounter, 0 mSdLazyCounter, 2782 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5236 SdHoareTripleChecker+Valid, 22260 SdHoareTripleChecker+Invalid, 2862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:54,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5236 Valid, 22260 Invalid, 2862 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2782 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-02 21:04:54,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28044 states. [2022-11-02 21:04:57,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28044 to 21581. [2022-11-02 21:04:57,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21581 states, 19908 states have (on average 1.593128390596745) internal successors, (31716), 19974 states have internal predecessors, (31716), 1223 states have call successors, (1223), 384 states have call predecessors, (1223), 448 states have return successors, (2080), 1286 states have call predecessors, (2080), 1223 states have call successors, (2080) [2022-11-02 21:04:57,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21581 states to 21581 states and 35019 transitions. [2022-11-02 21:04:57,397 INFO L78 Accepts]: Start accepts. Automaton has 21581 states and 35019 transitions. Word has length 156 [2022-11-02 21:04:57,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:57,397 INFO L495 AbstractCegarLoop]: Abstraction has 21581 states and 35019 transitions. [2022-11-02 21:04:57,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:04:57,398 INFO L276 IsEmpty]: Start isEmpty. Operand 21581 states and 35019 transitions. [2022-11-02 21:04:57,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-02 21:04:57,411 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:57,411 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:57,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 21:04:57,412 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:57,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:57,413 INFO L85 PathProgramCache]: Analyzing trace with hash 205896377, now seen corresponding path program 1 times [2022-11-02 21:04:57,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:57,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281113495] [2022-11-02 21:04:57,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:57,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:57,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:04:57,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:57,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 21:04:57,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:57,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 21:04:57,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:57,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-02 21:04:57,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:57,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-02 21:04:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:57,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:57,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:57,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281113495] [2022-11-02 21:04:57,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281113495] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:57,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:57,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:04:57,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238780933] [2022-11-02 21:04:57,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:57,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:04:57,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:57,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:04:57,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:04:57,665 INFO L87 Difference]: Start difference. First operand 21581 states and 35019 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:05:03,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:03,053 INFO L93 Difference]: Finished difference Result 47941 states and 78380 transitions. [2022-11-02 21:05:03,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:05:03,054 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-11-02 21:05:03,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:03,172 INFO L225 Difference]: With dead ends: 47941 [2022-11-02 21:05:03,173 INFO L226 Difference]: Without dead ends: 28499 [2022-11-02 21:05:03,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:05:03,229 INFO L413 NwaCegarLoop]: 4496 mSDtfsCounter, 4916 mSDsluCounter, 16635 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4934 SdHoareTripleChecker+Valid, 21131 SdHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:03,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4934 Valid, 21131 Invalid, 1335 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [75 Valid, 1260 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-02 21:05:03,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28499 states. [2022-11-02 21:05:05,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28499 to 21581. [2022-11-02 21:05:05,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21581 states, 19908 states have (on average 1.5898633715089412) internal successors, (31651), 19974 states have internal predecessors, (31651), 1223 states have call successors, (1223), 384 states have call predecessors, (1223), 448 states have return successors, (2080), 1286 states have call predecessors, (2080), 1223 states have call successors, (2080) [2022-11-02 21:05:05,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21581 states to 21581 states and 34954 transitions. [2022-11-02 21:05:05,945 INFO L78 Accepts]: Start accepts. Automaton has 21581 states and 34954 transitions. Word has length 156 [2022-11-02 21:05:05,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:05,946 INFO L495 AbstractCegarLoop]: Abstraction has 21581 states and 34954 transitions. [2022-11-02 21:05:05,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:05:05,946 INFO L276 IsEmpty]: Start isEmpty. Operand 21581 states and 34954 transitions. [2022-11-02 21:05:05,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-02 21:05:05,960 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:05,960 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:05,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 21:05:05,961 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:05,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:05,961 INFO L85 PathProgramCache]: Analyzing trace with hash -378875273, now seen corresponding path program 1 times [2022-11-02 21:05:05,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:05,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336775820] [2022-11-02 21:05:05,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:05,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:05,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:06,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:05:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:06,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 21:05:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:06,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 21:05:06,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:06,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-02 21:05:06,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:06,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-02 21:05:06,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:06,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:06,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:06,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336775820] [2022-11-02 21:05:06,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336775820] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:06,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:06,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:05:06,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065629380] [2022-11-02 21:05:06,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:06,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:05:06,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:06,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:05:06,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:05:06,224 INFO L87 Difference]: Start difference. First operand 21581 states and 34954 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:05:17,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:17,022 INFO L93 Difference]: Finished difference Result 73117 states and 118447 transitions. [2022-11-02 21:05:17,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:05:17,024 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-11-02 21:05:17,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:17,231 INFO L225 Difference]: With dead ends: 73117 [2022-11-02 21:05:17,231 INFO L226 Difference]: Without dead ends: 53677 [2022-11-02 21:05:17,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:05:17,299 INFO L413 NwaCegarLoop]: 4794 mSDtfsCounter, 5247 mSDsluCounter, 17450 mSDsCounter, 0 mSdLazyCounter, 2678 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5264 SdHoareTripleChecker+Valid, 22244 SdHoareTripleChecker+Invalid, 2762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:17,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5264 Valid, 22244 Invalid, 2762 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 2678 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-02 21:05:17,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53677 states. [2022-11-02 21:05:22,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53677 to 41230. [2022-11-02 21:05:22,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41230 states, 37893 states have (on average 1.5734304488955744) internal successors, (59622), 38023 states have internal predecessors, (59622), 2439 states have call successors, (2439), 768 states have call predecessors, (2439), 896 states have return successors, (4882), 2566 states have call predecessors, (4882), 2439 states have call successors, (4882) [2022-11-02 21:05:22,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41230 states to 41230 states and 66943 transitions. [2022-11-02 21:05:22,976 INFO L78 Accepts]: Start accepts. Automaton has 41230 states and 66943 transitions. Word has length 156 [2022-11-02 21:05:22,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:22,977 INFO L495 AbstractCegarLoop]: Abstraction has 41230 states and 66943 transitions. [2022-11-02 21:05:22,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:05:22,977 INFO L276 IsEmpty]: Start isEmpty. Operand 41230 states and 66943 transitions. [2022-11-02 21:05:23,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-02 21:05:23,005 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:23,006 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:23,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 21:05:23,006 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:23,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:23,007 INFO L85 PathProgramCache]: Analyzing trace with hash -808533579, now seen corresponding path program 1 times [2022-11-02 21:05:23,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:23,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94323062] [2022-11-02 21:05:23,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:23,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:23,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:23,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:05:23,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:23,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 21:05:23,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:23,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 21:05:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:23,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-02 21:05:23,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:23,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-02 21:05:23,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:23,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:23,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:23,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94323062] [2022-11-02 21:05:23,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94323062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:23,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:23,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:05:23,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147101945] [2022-11-02 21:05:23,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:23,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:05:23,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:23,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:05:23,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:05:23,253 INFO L87 Difference]: Start difference. First operand 41230 states and 66943 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 21:05:44,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:44,874 INFO L93 Difference]: Finished difference Result 144096 states and 235584 transitions. [2022-11-02 21:05:44,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:05:44,875 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-11-02 21:05:44,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:45,758 INFO L225 Difference]: With dead ends: 144096 [2022-11-02 21:05:45,759 INFO L226 Difference]: Without dead ends: 105007 [2022-11-02 21:05:45,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:05:45,946 INFO L413 NwaCegarLoop]: 4738 mSDtfsCounter, 5273 mSDsluCounter, 17375 mSDsCounter, 0 mSdLazyCounter, 2568 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5290 SdHoareTripleChecker+Valid, 22113 SdHoareTripleChecker+Invalid, 2656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:45,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5290 Valid, 22113 Invalid, 2656 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 2568 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-02 21:05:46,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105007 states.