./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/token_ring.11.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08d0b598-ae41-462a-8351-934a41a7f703/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08d0b598-ae41-462a-8351-934a41a7f703/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_08d0b598-ae41-462a-8351-934a41a7f703/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08d0b598-ae41-462a-8351-934a41a7f703/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.11.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08d0b598-ae41-462a-8351-934a41a7f703/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_08d0b598-ae41-462a-8351-934a41a7f703/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 c5f603027c62ff37561a520351662dbe2fd253b52e04e36028cb9a624978ef8e --- 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 21:07:08,355 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:07:08,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:07:08,402 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:07:08,402 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:07:08,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:07:08,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:07:08,406 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:07:08,415 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:07:08,422 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:07:08,424 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:07:08,425 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:07:08,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:07:08,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:07:08,431 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:07:08,435 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:07:08,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:07:08,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:07:08,439 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:07:08,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:07:08,447 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:07:08,448 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:07:08,450 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:07:08,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:07:08,456 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:07:08,460 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:07:08,460 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:07:08,461 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:07:08,462 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:07:08,464 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:07:08,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:07:08,466 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:07:08,467 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:07:08,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:07:08,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:07:08,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:07:08,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:07:08,471 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:07:08,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:07:08,472 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:07:08,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:07:08,474 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08d0b598-ae41-462a-8351-934a41a7f703/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 21:07:08,495 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:07:08,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:07:08,496 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:07:08,496 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:07:08,496 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:07:08,497 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:07:08,497 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:07:08,497 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:07:08,498 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:07:08,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:07:08,498 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:07:08,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:07:08,498 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:07:08,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:07:08,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:07:08,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:07:08,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:07:08,499 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:07:08,499 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:07:08,500 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:07:08,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:07:08,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:07:08,500 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:07:08,500 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:07:08,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:07:08,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:07:08,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:07:08,501 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:07:08,501 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:07:08,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:07:08,502 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:07:08,502 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:07:08,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:07:08,502 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_08d0b598-ae41-462a-8351-934a41a7f703/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08d0b598-ae41-462a-8351-934a41a7f703/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5f603027c62ff37561a520351662dbe2fd253b52e04e36028cb9a624978ef8e [2022-11-02 21:07:08,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:07:08,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:07:08,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:07:08,842 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:07:08,844 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:07:08,846 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08d0b598-ae41-462a-8351-934a41a7f703/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/systemc/token_ring.11.cil-2.c [2022-11-02 21:07:08,912 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08d0b598-ae41-462a-8351-934a41a7f703/bin/uautomizer-Dbtcem3rbc/data/1d859c113/e81fd779606c4135a410e0687757533d/FLAGda8950316 [2022-11-02 21:07:09,482 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:07:09,482 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08d0b598-ae41-462a-8351-934a41a7f703/sv-benchmarks/c/systemc/token_ring.11.cil-2.c [2022-11-02 21:07:09,496 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08d0b598-ae41-462a-8351-934a41a7f703/bin/uautomizer-Dbtcem3rbc/data/1d859c113/e81fd779606c4135a410e0687757533d/FLAGda8950316 [2022-11-02 21:07:09,782 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08d0b598-ae41-462a-8351-934a41a7f703/bin/uautomizer-Dbtcem3rbc/data/1d859c113/e81fd779606c4135a410e0687757533d [2022-11-02 21:07:09,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:07:09,786 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:07:09,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:07:09,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:07:09,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:07:09,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:07:09" (1/1) ... [2022-11-02 21:07:09,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c037ca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:09, skipping insertion in model container [2022-11-02 21:07:09,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:07:09" (1/1) ... [2022-11-02 21:07:09,806 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:07:09,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:07:10,029 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_08d0b598-ae41-462a-8351-934a41a7f703/sv-benchmarks/c/systemc/token_ring.11.cil-2.c[671,684] [2022-11-02 21:07:10,172 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:07:10,188 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:07:10,198 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_08d0b598-ae41-462a-8351-934a41a7f703/sv-benchmarks/c/systemc/token_ring.11.cil-2.c[671,684] [2022-11-02 21:07:10,280 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:07:10,307 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:07:10,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:10 WrapperNode [2022-11-02 21:07:10,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:07:10,309 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:07:10,309 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:07:10,309 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:07:10,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:10" (1/1) ... [2022-11-02 21:07:10,339 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:10" (1/1) ... [2022-11-02 21:07:10,389 INFO L138 Inliner]: procedures = 50, calls = 64, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 795 [2022-11-02 21:07:10,390 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:07:10,391 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:07:10,391 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:07:10,391 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:07:10,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:10" (1/1) ... [2022-11-02 21:07:10,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:10" (1/1) ... [2022-11-02 21:07:10,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:10" (1/1) ... [2022-11-02 21:07:10,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:10" (1/1) ... [2022-11-02 21:07:10,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:10" (1/1) ... [2022-11-02 21:07:10,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:10" (1/1) ... [2022-11-02 21:07:10,448 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:10" (1/1) ... [2022-11-02 21:07:10,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:10" (1/1) ... [2022-11-02 21:07:10,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:07:10,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:07:10,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:07:10,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:07:10,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:10" (1/1) ... [2022-11-02 21:07:10,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:07:10,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08d0b598-ae41-462a-8351-934a41a7f703/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:10,515 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08d0b598-ae41-462a-8351-934a41a7f703/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:10,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08d0b598-ae41-462a-8351-934a41a7f703/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:07:10,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:07:10,564 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-02 21:07:10,564 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-02 21:07:10,564 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-02 21:07:10,564 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-02 21:07:10,564 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-02 21:07:10,564 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-02 21:07:10,565 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-02 21:07:10,565 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-02 21:07:10,565 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-02 21:07:10,565 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-02 21:07:10,565 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-02 21:07:10,565 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-02 21:07:10,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:07:10,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:07:10,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:07:10,751 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:07:10,753 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:07:11,682 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:07:11,693 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:07:11,693 INFO L300 CfgBuilder]: Removed 14 assume(true) statements. [2022-11-02 21:07:11,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:07:11 BoogieIcfgContainer [2022-11-02 21:07:11,696 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:07:11,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:07:11,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:07:11,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:07:11,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:07:09" (1/3) ... [2022-11-02 21:07:11,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69fe4c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:07:11, skipping insertion in model container [2022-11-02 21:07:11,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:10" (2/3) ... [2022-11-02 21:07:11,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69fe4c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:07:11, skipping insertion in model container [2022-11-02 21:07:11,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:07:11" (3/3) ... [2022-11-02 21:07:11,705 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.11.cil-2.c [2022-11-02 21:07:11,723 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:07:11,724 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:07:11,802 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:07:11,812 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;@55b9fb15, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:07:11,812 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:07:11,826 INFO L276 IsEmpty]: Start isEmpty. Operand has 357 states, 324 states have (on average 1.6604938271604939) internal successors, (538), 326 states have internal predecessors, (538), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-02 21:07:11,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-02 21:07:11,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:11,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:11,845 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:11,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:11,850 INFO L85 PathProgramCache]: Analyzing trace with hash 972283439, now seen corresponding path program 1 times [2022-11-02 21:07:11,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:11,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254544900] [2022-11-02 21:07:11,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:11,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:12,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:12,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:07:12,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:12,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 21:07:12,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:12,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-02 21:07:12,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:12,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-02 21:07:12,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:12,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-02 21:07:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:12,634 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 21:07:12,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:12,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254544900] [2022-11-02 21:07:12,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254544900] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:12,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:12,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:07:12,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966212225] [2022-11-02 21:07:12,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:12,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:07:12,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:12,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:07:12,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:07:12,678 INFO L87 Difference]: Start difference. First operand has 357 states, 324 states have (on average 1.6604938271604939) internal successors, (538), 326 states have internal predecessors, (538), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 3 states have internal predecessors, (156), 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 21:07:14,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:14,807 INFO L93 Difference]: Finished difference Result 836 states and 1389 transitions. [2022-11-02 21:07:14,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:07:14,812 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 3 states have internal predecessors, (156), 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 166 [2022-11-02 21:07:14,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:14,833 INFO L225 Difference]: With dead ends: 836 [2022-11-02 21:07:14,833 INFO L226 Difference]: Without dead ends: 483 [2022-11-02 21:07:14,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:07:14,847 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 957 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:14,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [980 Valid, 985 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-02 21:07:14,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-11-02 21:07:15,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 352. [2022-11-02 21:07:15,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 320 states have (on average 1.571875) internal successors, (503), 321 states have internal predecessors, (503), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-02 21:07:15,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 553 transitions. [2022-11-02 21:07:15,010 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 553 transitions. Word has length 166 [2022-11-02 21:07:15,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:15,011 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 553 transitions. [2022-11-02 21:07:15,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 3 states have internal predecessors, (156), 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 21:07:15,013 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 553 transitions. [2022-11-02 21:07:15,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-02 21:07:15,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:15,027 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:15,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:07:15,028 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:15,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:15,029 INFO L85 PathProgramCache]: Analyzing trace with hash 627455277, now seen corresponding path program 1 times [2022-11-02 21:07:15,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:15,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755345384] [2022-11-02 21:07:15,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:15,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:15,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:15,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:07:15,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:15,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 21:07:15,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:15,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-02 21:07:15,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:15,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-02 21:07:15,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:15,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-02 21:07:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:15,261 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 21:07:15,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:15,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755345384] [2022-11-02 21:07:15,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755345384] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:15,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:15,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:07:15,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133288857] [2022-11-02 21:07:15,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:15,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:07:15,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:15,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:07:15,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:07:15,266 INFO L87 Difference]: Start difference. First operand 352 states and 553 transitions. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 3 states have internal predecessors, (156), 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 21:07:17,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:17,062 INFO L93 Difference]: Finished difference Result 819 states and 1305 transitions. [2022-11-02 21:07:17,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:07:17,063 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 3 states have internal predecessors, (156), 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 166 [2022-11-02 21:07:17,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:17,068 INFO L225 Difference]: With dead ends: 819 [2022-11-02 21:07:17,068 INFO L226 Difference]: Without dead ends: 483 [2022-11-02 21:07:17,079 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 21:07:17,081 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 944 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 967 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:17,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [967 Valid, 971 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-02 21:07:17,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-11-02 21:07:17,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 352. [2022-11-02 21:07:17,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 320 states have (on average 1.56875) internal successors, (502), 321 states have internal predecessors, (502), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-02 21:07:17,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 552 transitions. [2022-11-02 21:07:17,161 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 552 transitions. Word has length 166 [2022-11-02 21:07:17,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:17,164 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 552 transitions. [2022-11-02 21:07:17,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 3 states have internal predecessors, (156), 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 21:07:17,165 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 552 transitions. [2022-11-02 21:07:17,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-02 21:07:17,169 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:17,170 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:17,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:07:17,171 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:17,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:17,172 INFO L85 PathProgramCache]: Analyzing trace with hash 241592875, now seen corresponding path program 1 times [2022-11-02 21:07:17,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:17,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091580367] [2022-11-02 21:07:17,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:17,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:17,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:07:17,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:17,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 21:07:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:17,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-02 21:07:17,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:17,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-02 21:07:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:17,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-02 21:07:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:17,548 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 21:07:17,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:17,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091580367] [2022-11-02 21:07:17,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091580367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:17,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:17,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:07:17,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101081524] [2022-11-02 21:07:17,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:17,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:07:17,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:17,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:07:17,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:07:17,554 INFO L87 Difference]: Start difference. First operand 352 states and 552 transitions. Second operand has 6 states, 6 states have (on average 26.0) internal successors, (156), 4 states have internal predecessors, (156), 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 21:07:21,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:21,192 INFO L93 Difference]: Finished difference Result 1296 states and 2079 transitions. [2022-11-02 21:07:21,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:07:21,193 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 4 states have internal predecessors, (156), 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 166 [2022-11-02 21:07:21,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:21,208 INFO L225 Difference]: With dead ends: 1296 [2022-11-02 21:07:21,208 INFO L226 Difference]: Without dead ends: 963 [2022-11-02 21:07:21,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:07:21,220 INFO L413 NwaCegarLoop]: 657 mSDtfsCounter, 1437 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 1868 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 1980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:21,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1455 Valid, 1536 Invalid, 1980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1868 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-02 21:07:21,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-11-02 21:07:21,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 702. [2022-11-02 21:07:21,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 643 states have (on average 1.5816485225505443) internal successors, (1017), 645 states have internal predecessors, (1017), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2022-11-02 21:07:21,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1110 transitions. [2022-11-02 21:07:21,370 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1110 transitions. Word has length 166 [2022-11-02 21:07:21,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:21,370 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 1110 transitions. [2022-11-02 21:07:21,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 4 states have internal predecessors, (156), 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 21:07:21,371 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1110 transitions. [2022-11-02 21:07:21,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-02 21:07:21,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:21,374 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:21,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:07:21,375 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:21,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:21,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1241179055, now seen corresponding path program 1 times [2022-11-02 21:07:21,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:21,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297228094] [2022-11-02 21:07:21,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:21,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:21,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:21,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:07:21,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:21,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 21:07:21,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:21,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-02 21:07:21,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:21,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-02 21:07:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:21,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-02 21:07:21,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:21,699 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 21:07:21,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:21,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297228094] [2022-11-02 21:07:21,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297228094] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:21,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:21,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:07:21,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32852257] [2022-11-02 21:07:21,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:21,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:07:21,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:21,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:07:21,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:07:21,702 INFO L87 Difference]: Start difference. First operand 702 states and 1110 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 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 21:07:26,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:26,338 INFO L93 Difference]: Finished difference Result 2144 states and 3444 transitions. [2022-11-02 21:07:26,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:07:26,339 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 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 166 [2022-11-02 21:07:26,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:26,350 INFO L225 Difference]: With dead ends: 2144 [2022-11-02 21:07:26,350 INFO L226 Difference]: Without dead ends: 1461 [2022-11-02 21:07:26,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:07:26,363 INFO L413 NwaCegarLoop]: 936 mSDtfsCounter, 1462 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 2904 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 2677 SdHoareTripleChecker+Invalid, 2977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:26,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 2677 Invalid, 2977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 2904 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-02 21:07:26,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2022-11-02 21:07:26,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 1027. [2022-11-02 21:07:26,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 941 states have (on average 1.5749202975557917) internal successors, (1482), 944 states have internal predecessors, (1482), 65 states have call successors, (65), 18 states have call predecessors, (65), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2022-11-02 21:07:26,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1617 transitions. [2022-11-02 21:07:26,555 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1617 transitions. Word has length 166 [2022-11-02 21:07:26,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:26,556 INFO L495 AbstractCegarLoop]: Abstraction has 1027 states and 1617 transitions. [2022-11-02 21:07:26,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 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 21:07:26,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1617 transitions. [2022-11-02 21:07:26,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-02 21:07:26,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:26,565 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:26,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:07:26,566 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:26,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:26,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1579466605, now seen corresponding path program 1 times [2022-11-02 21:07:26,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:26,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254893218] [2022-11-02 21:07:26,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:26,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:26,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:26,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:07:26,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:26,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 21:07:26,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:26,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-02 21:07:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:26,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-02 21:07:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:26,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-02 21:07:26,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:26,876 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 21:07:26,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:26,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254893218] [2022-11-02 21:07:26,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254893218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:26,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:26,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:07:26,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640068576] [2022-11-02 21:07:26,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:26,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:07:26,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:26,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:07:26,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:07:26,879 INFO L87 Difference]: Start difference. First operand 1027 states and 1617 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 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 21:07:31,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:31,632 INFO L93 Difference]: Finished difference Result 3394 states and 5439 transitions. [2022-11-02 21:07:31,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:07:31,633 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 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 166 [2022-11-02 21:07:31,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:31,646 INFO L225 Difference]: With dead ends: 3394 [2022-11-02 21:07:31,646 INFO L226 Difference]: Without dead ends: 2386 [2022-11-02 21:07:31,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:07:31,651 INFO L413 NwaCegarLoop]: 928 mSDtfsCounter, 1459 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 2906 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 2669 SdHoareTripleChecker+Invalid, 2982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:31,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1477 Valid, 2669 Invalid, 2982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2906 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-02 21:07:31,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2386 states. [2022-11-02 21:07:31,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2386 to 1678. [2022-11-02 21:07:31,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1678 states, 1538 states have (on average 1.568920676202861) internal successors, (2413), 1543 states have internal predecessors, (2413), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2022-11-02 21:07:31,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1678 states to 1678 states and 2636 transitions. [2022-11-02 21:07:31,908 INFO L78 Accepts]: Start accepts. Automaton has 1678 states and 2636 transitions. Word has length 166 [2022-11-02 21:07:31,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:31,908 INFO L495 AbstractCegarLoop]: Abstraction has 1678 states and 2636 transitions. [2022-11-02 21:07:31,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 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 21:07:31,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1678 states and 2636 transitions. [2022-11-02 21:07:31,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-02 21:07:31,911 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:31,911 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:31,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:07:31,912 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:31,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:31,913 INFO L85 PathProgramCache]: Analyzing trace with hash 2006021103, now seen corresponding path program 1 times [2022-11-02 21:07:31,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:31,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951839594] [2022-11-02 21:07:31,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:31,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:32,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:07:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:32,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 21:07:32,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:32,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-02 21:07:32,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:32,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-02 21:07:32,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:32,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-02 21:07:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:32,241 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 21:07:32,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:32,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951839594] [2022-11-02 21:07:32,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951839594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:32,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:32,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:07:32,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671801457] [2022-11-02 21:07:32,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:32,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:07:32,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:32,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:07:32,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:07:32,245 INFO L87 Difference]: Start difference. First operand 1678 states and 2636 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 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 21:07:37,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:37,140 INFO L93 Difference]: Finished difference Result 5797 states and 9250 transitions. [2022-11-02 21:07:37,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:07:37,141 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 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 166 [2022-11-02 21:07:37,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:37,161 INFO L225 Difference]: With dead ends: 5797 [2022-11-02 21:07:37,161 INFO L226 Difference]: Without dead ends: 4138 [2022-11-02 21:07:37,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:07:37,169 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 1455 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 2901 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 2665 SdHoareTripleChecker+Invalid, 2977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:37,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 2665 Invalid, 2977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2901 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-02 21:07:37,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4138 states. [2022-11-02 21:07:37,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4138 to 2981. [2022-11-02 21:07:37,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2981 states, 2733 states have (on average 1.5642151481888036) internal successors, (4275), 2742 states have internal predecessors, (4275), 185 states have call successors, (185), 54 states have call predecessors, (185), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2022-11-02 21:07:37,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2981 states to 2981 states and 4680 transitions. [2022-11-02 21:07:37,659 INFO L78 Accepts]: Start accepts. Automaton has 2981 states and 4680 transitions. Word has length 166 [2022-11-02 21:07:37,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:37,659 INFO L495 AbstractCegarLoop]: Abstraction has 2981 states and 4680 transitions. [2022-11-02 21:07:37,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 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 21:07:37,660 INFO L276 IsEmpty]: Start isEmpty. Operand 2981 states and 4680 transitions. [2022-11-02 21:07:37,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-02 21:07:37,663 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:37,664 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:37,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 21:07:37,664 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:37,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:37,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1465591597, now seen corresponding path program 1 times [2022-11-02 21:07:37,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:37,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411539506] [2022-11-02 21:07:37,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:37,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:37,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:07:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:37,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 21:07:37,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:37,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-02 21:07:37,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:37,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-02 21:07:37,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:37,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-02 21:07:37,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:37,955 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 21:07:37,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:37,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411539506] [2022-11-02 21:07:37,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411539506] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:37,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:37,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:07:37,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637531343] [2022-11-02 21:07:37,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:37,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:07:37,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:37,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:07:37,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:07:37,958 INFO L87 Difference]: Start difference. First operand 2981 states and 4680 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 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 21:07:43,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:43,044 INFO L93 Difference]: Finished difference Result 10602 states and 16888 transitions. [2022-11-02 21:07:43,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:07:43,045 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 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 166 [2022-11-02 21:07:43,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:43,086 INFO L225 Difference]: With dead ends: 10602 [2022-11-02 21:07:43,087 INFO L226 Difference]: Without dead ends: 7640 [2022-11-02 21:07:43,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:07:43,100 INFO L413 NwaCegarLoop]: 920 mSDtfsCounter, 1451 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 2896 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1469 SdHoareTripleChecker+Valid, 2661 SdHoareTripleChecker+Invalid, 2972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:43,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1469 Valid, 2661 Invalid, 2972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2896 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-02 21:07:43,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7640 states. [2022-11-02 21:07:44,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7640 to 5592. [2022-11-02 21:07:44,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5592 states, 5128 states have (on average 1.56103744149766) internal successors, (8005), 5145 states have internal predecessors, (8005), 345 states have call successors, (345), 102 states have call predecessors, (345), 118 states have return successors, (442), 360 states have call predecessors, (442), 345 states have call successors, (442) [2022-11-02 21:07:44,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5592 states to 5592 states and 8792 transitions. [2022-11-02 21:07:44,180 INFO L78 Accepts]: Start accepts. Automaton has 5592 states and 8792 transitions. Word has length 166 [2022-11-02 21:07:44,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:44,181 INFO L495 AbstractCegarLoop]: Abstraction has 5592 states and 8792 transitions. [2022-11-02 21:07:44,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 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 21:07:44,181 INFO L276 IsEmpty]: Start isEmpty. Operand 5592 states and 8792 transitions. [2022-11-02 21:07:44,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-02 21:07:44,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:44,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:44,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 21:07:44,189 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:44,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:44,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1309611055, now seen corresponding path program 1 times [2022-11-02 21:07:44,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:44,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115658206] [2022-11-02 21:07:44,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:44,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:44,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:44,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:07:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:44,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 21:07:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:44,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-02 21:07:44,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:44,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-02 21:07:44,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:44,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-02 21:07:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:44,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:44,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:44,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115658206] [2022-11-02 21:07:44,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115658206] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:44,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:44,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:07:44,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027043164] [2022-11-02 21:07:44,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:44,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:07:44,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:44,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:07:44,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:07:44,503 INFO L87 Difference]: Start difference. First operand 5592 states and 8792 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 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 21:07:51,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:51,206 INFO L93 Difference]: Finished difference Result 20211 states and 32222 transitions. [2022-11-02 21:07:51,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:07:51,207 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 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 166 [2022-11-02 21:07:51,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:51,306 INFO L225 Difference]: With dead ends: 20211 [2022-11-02 21:07:51,306 INFO L226 Difference]: Without dead ends: 14638 [2022-11-02 21:07:51,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:07:51,330 INFO L413 NwaCegarLoop]: 914 mSDtfsCounter, 1450 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 2888 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 2655 SdHoareTripleChecker+Invalid, 2967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:51,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 2655 Invalid, 2967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2888 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-02 21:07:51,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14638 states. [2022-11-02 21:07:53,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14638 to 10827. [2022-11-02 21:07:53,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10827 states, 9931 states have (on average 1.5590574967274191) internal successors, (15483), 9964 states have internal predecessors, (15483), 665 states have call successors, (665), 198 states have call predecessors, (665), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2022-11-02 21:07:53,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10827 states to 10827 states and 17088 transitions. [2022-11-02 21:07:53,196 INFO L78 Accepts]: Start accepts. Automaton has 10827 states and 17088 transitions. Word has length 166 [2022-11-02 21:07:53,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:53,199 INFO L495 AbstractCegarLoop]: Abstraction has 10827 states and 17088 transitions. [2022-11-02 21:07:53,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 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 21:07:53,200 INFO L276 IsEmpty]: Start isEmpty. Operand 10827 states and 17088 transitions. [2022-11-02 21:07:53,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-02 21:07:53,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:53,209 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:53,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 21:07:53,209 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:53,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:53,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1720221421, now seen corresponding path program 1 times [2022-11-02 21:07:53,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:53,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023409335] [2022-11-02 21:07:53,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:53,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:53,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:53,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:07:53,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:53,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 21:07:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:53,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-02 21:07:53,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:53,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-02 21:07:53,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:53,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-02 21:07:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:53,481 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 21:07:53,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:53,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023409335] [2022-11-02 21:07:53,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023409335] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:53,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:53,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:07:53,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066113583] [2022-11-02 21:07:53,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:53,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:07:53,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:53,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:07:53,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:07:53,485 INFO L87 Difference]: Start difference. First operand 10827 states and 17088 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 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 21:08:01,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:01,446 INFO L93 Difference]: Finished difference Result 39397 states and 63020 transitions. [2022-11-02 21:08:01,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:08:01,447 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 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 166 [2022-11-02 21:08:01,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:01,562 INFO L225 Difference]: With dead ends: 39397 [2022-11-02 21:08:01,562 INFO L226 Difference]: Without dead ends: 28589 [2022-11-02 21:08:01,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:08:01,606 INFO L413 NwaCegarLoop]: 906 mSDtfsCounter, 1445 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 2868 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1463 SdHoareTripleChecker+Valid, 2647 SdHoareTripleChecker+Invalid, 2948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:01,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1463 Valid, 2647 Invalid, 2948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2868 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-02 21:08:01,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28589 states. [2022-11-02 21:08:05,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28589 to 21359. [2022-11-02 21:08:05,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21359 states, 19599 states have (on average 1.558599928567784) internal successors, (30547), 19664 states have internal predecessors, (30547), 1305 states have call successors, (1305), 390 states have call predecessors, (1305), 454 states have return successors, (2098), 1368 states have call predecessors, (2098), 1305 states have call successors, (2098) [2022-11-02 21:08:05,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21359 states to 21359 states and 33950 transitions. [2022-11-02 21:08:05,192 INFO L78 Accepts]: Start accepts. Automaton has 21359 states and 33950 transitions. Word has length 166 [2022-11-02 21:08:05,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:05,193 INFO L495 AbstractCegarLoop]: Abstraction has 21359 states and 33950 transitions. [2022-11-02 21:08:05,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 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 21:08:05,193 INFO L276 IsEmpty]: Start isEmpty. Operand 21359 states and 33950 transitions. [2022-11-02 21:08:05,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-02 21:08:05,205 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:05,205 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:05,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 21:08:05,206 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:05,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:05,206 INFO L85 PathProgramCache]: Analyzing trace with hash -415661781, now seen corresponding path program 1 times [2022-11-02 21:08:05,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:05,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598954261] [2022-11-02 21:08:05,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:05,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:05,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:08:05,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:05,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 21:08:05,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:05,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-02 21:08:05,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:05,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-02 21:08:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:05,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-02 21:08:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:05,465 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 21:08:05,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:05,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598954261] [2022-11-02 21:08:05,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598954261] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:05,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:05,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:08:05,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029976036] [2022-11-02 21:08:05,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:05,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:08:05,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:05,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:08:05,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:08:05,468 INFO L87 Difference]: Start difference. First operand 21359 states and 33950 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 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 21:08:18,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:18,136 INFO L93 Difference]: Finished difference Result 77835 states and 125344 transitions. [2022-11-02 21:08:18,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:08:18,136 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 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 166 [2022-11-02 21:08:18,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:18,378 INFO L225 Difference]: With dead ends: 77835 [2022-11-02 21:08:18,378 INFO L226 Difference]: Without dead ends: 56495 [2022-11-02 21:08:18,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:08:18,451 INFO L413 NwaCegarLoop]: 901 mSDtfsCounter, 1444 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 2860 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1462 SdHoareTripleChecker+Valid, 2642 SdHoareTripleChecker+Invalid, 2940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:18,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1462 Valid, 2642 Invalid, 2940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2860 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-02 21:08:18,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56495 states. [2022-11-02 21:08:24,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56495 to 42484. [2022-11-02 21:08:24,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42484 states, 38996 states have (on average 1.5582367422299723) internal successors, (60765), 39125 states have internal predecessors, (60765), 2585 states have call successors, (2585), 774 states have call predecessors, (2585), 902 states have return successors, (4900), 2712 states have call predecessors, (4900), 2585 states have call successors, (4900) [2022-11-02 21:08:24,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42484 states to 42484 states and 68250 transitions. [2022-11-02 21:08:24,508 INFO L78 Accepts]: Start accepts. Automaton has 42484 states and 68250 transitions. Word has length 166 [2022-11-02 21:08:24,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:24,508 INFO L495 AbstractCegarLoop]: Abstraction has 42484 states and 68250 transitions. [2022-11-02 21:08:24,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 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 21:08:24,509 INFO L276 IsEmpty]: Start isEmpty. Operand 42484 states and 68250 transitions. [2022-11-02 21:08:24,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-02 21:08:24,533 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:24,533 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:24,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 21:08:24,534 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:24,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:24,534 INFO L85 PathProgramCache]: Analyzing trace with hash -346013907, now seen corresponding path program 1 times [2022-11-02 21:08:24,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:24,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826201049] [2022-11-02 21:08:24,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:24,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:24,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:08:24,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:24,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 21:08:24,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:24,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-02 21:08:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:24,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-02 21:08:24,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:24,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-02 21:08:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:24,783 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 21:08:24,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:24,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826201049] [2022-11-02 21:08:24,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826201049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:24,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:24,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:08:24,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801278245] [2022-11-02 21:08:24,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:24,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:08:24,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:24,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:08:24,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:08:24,786 INFO L87 Difference]: Start difference. First operand 42484 states and 68250 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 5 states have internal predecessors, (156), 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)