./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_be0a90a5-5a23-457c-b169-ec5a38b046b9/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0a90a5-5a23-457c-b169-ec5a38b046b9/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0a90a5-5a23-457c-b169-ec5a38b046b9/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0a90a5-5a23-457c-b169-ec5a38b046b9/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0a90a5-5a23-457c-b169-ec5a38b046b9/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0a90a5-5a23-457c-b169-ec5a38b046b9/bin/uautomizer-tPACEb0tL8 --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 5aad5fd4611705ad6fdf71db638f2162c13b3da201193a54a746a0dc7cc3072f --- 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-e04fb08 [2022-11-16 11:10:21,115 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:10:21,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:10:21,178 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:10:21,180 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:10:21,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:10:21,185 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:10:21,190 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:10:21,194 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:10:21,196 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:10:21,198 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:10:21,200 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:10:21,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:10:21,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:10:21,209 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:10:21,211 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:10:21,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:10:21,219 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:10:21,222 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:10:21,225 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:10:21,232 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:10:21,234 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:10:21,235 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:10:21,238 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:10:21,242 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:10:21,250 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:10:21,251 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:10:21,252 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:10:21,254 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:10:21,255 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:10:21,257 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:10:21,258 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:10:21,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:10:21,262 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:10:21,265 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:10:21,266 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:10:21,267 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:10:21,267 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:10:21,268 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:10:21,269 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:10:21,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:10:21,271 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0a90a5-5a23-457c-b169-ec5a38b046b9/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:10:21,323 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:10:21,324 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:10:21,325 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:10:21,325 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:10:21,326 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:10:21,327 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:10:21,328 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:10:21,328 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:10:21,328 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:10:21,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:10:21,331 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:10:21,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:10:21,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:10:21,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:10:21,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:10:21,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:10:21,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:10:21,333 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:10:21,333 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:10:21,334 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:10:21,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:10:21,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:10:21,335 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:10:21,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:10:21,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:10:21,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:10:21,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:10:21,337 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:10:21,337 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:10:21,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:10:21,338 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:10:21,338 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:10:21,339 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:10:21,339 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_be0a90a5-5a23-457c-b169-ec5a38b046b9/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0a90a5-5a23-457c-b169-ec5a38b046b9/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5aad5fd4611705ad6fdf71db638f2162c13b3da201193a54a746a0dc7cc3072f [2022-11-16 11:10:21,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:10:21,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:10:21,762 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:10:21,764 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:10:21,765 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:10:21,767 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0a90a5-5a23-457c-b169-ec5a38b046b9/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2022-11-16 11:10:21,853 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0a90a5-5a23-457c-b169-ec5a38b046b9/bin/uautomizer-tPACEb0tL8/data/5a4759593/ab7003d8513e4b02a1bdd49179286419/FLAG0e0398ae6 [2022-11-16 11:10:22,522 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:10:22,523 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0a90a5-5a23-457c-b169-ec5a38b046b9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2022-11-16 11:10:22,535 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0a90a5-5a23-457c-b169-ec5a38b046b9/bin/uautomizer-tPACEb0tL8/data/5a4759593/ab7003d8513e4b02a1bdd49179286419/FLAG0e0398ae6 [2022-11-16 11:10:22,847 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0a90a5-5a23-457c-b169-ec5a38b046b9/bin/uautomizer-tPACEb0tL8/data/5a4759593/ab7003d8513e4b02a1bdd49179286419 [2022-11-16 11:10:22,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:10:22,855 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:10:22,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:10:22,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:10:22,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:10:22,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:10:22" (1/1) ... [2022-11-16 11:10:22,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48c81053 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:22, skipping insertion in model container [2022-11-16 11:10:22,869 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:10:22" (1/1) ... [2022-11-16 11:10:22,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:10:22,954 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:10:23,319 WARN L229 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_be0a90a5-5a23-457c-b169-ec5a38b046b9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[7251,7264] [2022-11-16 11:10:23,396 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:10:23,412 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:10:23,471 WARN L229 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_be0a90a5-5a23-457c-b169-ec5a38b046b9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[7251,7264] [2022-11-16 11:10:23,530 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:10:23,552 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:10:23,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:23 WrapperNode [2022-11-16 11:10:23,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:10:23,554 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:10:23,554 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:10:23,554 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:10:23,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:23" (1/1) ... [2022-11-16 11:10:23,577 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:23" (1/1) ... [2022-11-16 11:10:23,622 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 673 [2022-11-16 11:10:23,623 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:10:23,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:10:23,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:10:23,624 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:10:23,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:23" (1/1) ... [2022-11-16 11:10:23,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:23" (1/1) ... [2022-11-16 11:10:23,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:23" (1/1) ... [2022-11-16 11:10:23,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:23" (1/1) ... [2022-11-16 11:10:23,653 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:23" (1/1) ... [2022-11-16 11:10:23,660 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:23" (1/1) ... [2022-11-16 11:10:23,663 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:23" (1/1) ... [2022-11-16 11:10:23,666 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:23" (1/1) ... [2022-11-16 11:10:23,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:10:23,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:10:23,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:10:23,672 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:10:23,673 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:23" (1/1) ... [2022-11-16 11:10:23,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:10:23,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0a90a5-5a23-457c-b169-ec5a38b046b9/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:10:23,748 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0a90a5-5a23-457c-b169-ec5a38b046b9/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:10:23,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0a90a5-5a23-457c-b169-ec5a38b046b9/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:10:23,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:10:23,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:10:23,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:10:23,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:10:24,050 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:10:24,053 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:10:24,996 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:10:25,007 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:10:25,007 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 11:10:25,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:10:25 BoogieIcfgContainer [2022-11-16 11:10:25,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:10:25,013 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:10:25,013 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:10:25,018 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:10:25,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:10:22" (1/3) ... [2022-11-16 11:10:25,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24c7414c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:10:25, skipping insertion in model container [2022-11-16 11:10:25,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:23" (2/3) ... [2022-11-16 11:10:25,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24c7414c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:10:25, skipping insertion in model container [2022-11-16 11:10:25,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:10:25" (3/3) ... [2022-11-16 11:10:25,022 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2022-11-16 11:10:25,045 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:10:25,045 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:10:25,178 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:10:25,186 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;@45411474, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:10:25,186 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:10:25,192 INFO L276 IsEmpty]: Start isEmpty. Operand has 180 states, 178 states have (on average 1.7191011235955056) internal successors, (306), 179 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:25,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 11:10:25,205 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:25,206 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:25,206 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:25,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:25,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1338980314, now seen corresponding path program 1 times [2022-11-16 11:10:25,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:25,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871454583] [2022-11-16 11:10:25,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:25,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:25,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:26,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:26,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:26,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871454583] [2022-11-16 11:10:26,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871454583] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:26,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:26,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:10:26,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799587475] [2022-11-16 11:10:26,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:26,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:10:26,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:26,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:10:26,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:10:26,205 INFO L87 Difference]: Start difference. First operand has 180 states, 178 states have (on average 1.7191011235955056) internal successors, (306), 179 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:26,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:26,692 INFO L93 Difference]: Finished difference Result 640 states and 1036 transitions. [2022-11-16 11:10:26,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:10:26,699 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-16 11:10:26,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:26,732 INFO L225 Difference]: With dead ends: 640 [2022-11-16 11:10:26,733 INFO L226 Difference]: Without dead ends: 541 [2022-11-16 11:10:26,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:10:26,745 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 1605 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1605 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:26,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1605 Valid, 1129 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:10:26,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-11-16 11:10:26,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 275. [2022-11-16 11:10:26,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 1.5036496350364963) internal successors, (412), 274 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:26,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 412 transitions. [2022-11-16 11:10:26,862 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 412 transitions. Word has length 65 [2022-11-16 11:10:26,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:26,863 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 412 transitions. [2022-11-16 11:10:26,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:26,864 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 412 transitions. [2022-11-16 11:10:26,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-16 11:10:26,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:26,867 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] [2022-11-16 11:10:26,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:10:26,868 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:26,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:26,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1162317624, now seen corresponding path program 1 times [2022-11-16 11:10:26,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:26,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341970146] [2022-11-16 11:10:26,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:26,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:27,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:27,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:27,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341970146] [2022-11-16 11:10:27,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341970146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:27,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:27,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:10:27,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754770310] [2022-11-16 11:10:27,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:27,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:10:27,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:27,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:10:27,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:10:27,186 INFO L87 Difference]: Start difference. First operand 275 states and 412 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:27,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:27,616 INFO L93 Difference]: Finished difference Result 1013 states and 1556 transitions. [2022-11-16 11:10:27,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:10:27,617 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-16 11:10:27,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:27,623 INFO L225 Difference]: With dead ends: 1013 [2022-11-16 11:10:27,623 INFO L226 Difference]: Without dead ends: 801 [2022-11-16 11:10:27,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:10:27,637 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 778 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:27,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 895 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:10:27,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2022-11-16 11:10:27,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 795. [2022-11-16 11:10:27,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 794 states have (on average 1.5251889168765742) internal successors, (1211), 794 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:27,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1211 transitions. [2022-11-16 11:10:27,817 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1211 transitions. Word has length 66 [2022-11-16 11:10:27,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:27,819 INFO L495 AbstractCegarLoop]: Abstraction has 795 states and 1211 transitions. [2022-11-16 11:10:27,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:27,819 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1211 transitions. [2022-11-16 11:10:27,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-16 11:10:27,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:27,833 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:27,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:10:27,836 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:27,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:27,840 INFO L85 PathProgramCache]: Analyzing trace with hash -314049844, now seen corresponding path program 1 times [2022-11-16 11:10:27,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:27,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979617863] [2022-11-16 11:10:27,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:27,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:27,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:28,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:28,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:28,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979617863] [2022-11-16 11:10:28,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979617863] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:28,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:28,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:10:28,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240775487] [2022-11-16 11:10:28,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:28,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:10:28,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:28,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:10:28,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:10:28,119 INFO L87 Difference]: Start difference. First operand 795 states and 1211 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:28,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:28,759 INFO L93 Difference]: Finished difference Result 2127 states and 3281 transitions. [2022-11-16 11:10:28,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:10:28,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-16 11:10:28,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:28,767 INFO L225 Difference]: With dead ends: 2127 [2022-11-16 11:10:28,767 INFO L226 Difference]: Without dead ends: 1383 [2022-11-16 11:10:28,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:10:28,770 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 998 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:28,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [998 Valid, 244 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:10:28,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2022-11-16 11:10:29,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1381. [2022-11-16 11:10:29,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 1380 states have (on average 1.5333333333333334) internal successors, (2116), 1380 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:29,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 2116 transitions. [2022-11-16 11:10:29,070 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 2116 transitions. Word has length 67 [2022-11-16 11:10:29,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:29,071 INFO L495 AbstractCegarLoop]: Abstraction has 1381 states and 2116 transitions. [2022-11-16 11:10:29,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:29,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 2116 transitions. [2022-11-16 11:10:29,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-16 11:10:29,073 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:29,073 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:29,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:10:29,074 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:29,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:29,075 INFO L85 PathProgramCache]: Analyzing trace with hash -301249106, now seen corresponding path program 1 times [2022-11-16 11:10:29,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:29,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664582694] [2022-11-16 11:10:29,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:29,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:29,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:29,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:29,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:29,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664582694] [2022-11-16 11:10:29,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664582694] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:29,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:29,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:10:29,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709459403] [2022-11-16 11:10:29,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:29,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:10:29,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:29,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:10:29,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:10:29,254 INFO L87 Difference]: Start difference. First operand 1381 states and 2116 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:30,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:30,080 INFO L93 Difference]: Finished difference Result 3713 states and 5742 transitions. [2022-11-16 11:10:30,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:10:30,081 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-16 11:10:30,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:30,091 INFO L225 Difference]: With dead ends: 3713 [2022-11-16 11:10:30,092 INFO L226 Difference]: Without dead ends: 2433 [2022-11-16 11:10:30,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:10:30,095 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 924 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:30,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 250 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:10:30,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2433 states. [2022-11-16 11:10:30,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2433 to 2431. [2022-11-16 11:10:30,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2431 states, 2430 states have (on average 1.536625514403292) internal successors, (3734), 2430 states have internal predecessors, (3734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:30,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 3734 transitions. [2022-11-16 11:10:30,524 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 3734 transitions. Word has length 67 [2022-11-16 11:10:30,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:30,525 INFO L495 AbstractCegarLoop]: Abstraction has 2431 states and 3734 transitions. [2022-11-16 11:10:30,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:30,525 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 3734 transitions. [2022-11-16 11:10:30,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-16 11:10:30,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:30,527 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:30,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:10:30,528 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:30,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:30,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1722644829, now seen corresponding path program 1 times [2022-11-16 11:10:30,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:30,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711421459] [2022-11-16 11:10:30,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:30,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:30,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:30,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:30,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711421459] [2022-11-16 11:10:30,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711421459] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:30,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:30,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:10:30,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704149199] [2022-11-16 11:10:30,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:30,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:10:30,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:30,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:10:30,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:10:30,692 INFO L87 Difference]: Start difference. First operand 2431 states and 3734 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:31,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:31,801 INFO L93 Difference]: Finished difference Result 6934 states and 10705 transitions. [2022-11-16 11:10:31,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:10:31,801 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-16 11:10:31,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:31,821 INFO L225 Difference]: With dead ends: 6934 [2022-11-16 11:10:31,821 INFO L226 Difference]: Without dead ends: 4577 [2022-11-16 11:10:31,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:10:31,826 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 950 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:31,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [950 Valid, 248 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:10:31,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4577 states. [2022-11-16 11:10:32,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4577 to 4575. [2022-11-16 11:10:32,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4575 states, 4574 states have (on average 1.5343244425010931) internal successors, (7018), 4574 states have internal predecessors, (7018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:32,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4575 states to 4575 states and 7018 transitions. [2022-11-16 11:10:32,609 INFO L78 Accepts]: Start accepts. Automaton has 4575 states and 7018 transitions. Word has length 67 [2022-11-16 11:10:32,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:32,610 INFO L495 AbstractCegarLoop]: Abstraction has 4575 states and 7018 transitions. [2022-11-16 11:10:32,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:32,615 INFO L276 IsEmpty]: Start isEmpty. Operand 4575 states and 7018 transitions. [2022-11-16 11:10:32,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-16 11:10:32,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:32,617 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:32,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:10:32,619 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:32,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:32,619 INFO L85 PathProgramCache]: Analyzing trace with hash -262843909, now seen corresponding path program 1 times [2022-11-16 11:10:32,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:32,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896025500] [2022-11-16 11:10:32,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:32,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:32,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:32,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:32,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:32,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896025500] [2022-11-16 11:10:32,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896025500] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:32,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:32,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:10:32,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197287617] [2022-11-16 11:10:32,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:32,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:10:32,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:32,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:10:32,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:10:32,861 INFO L87 Difference]: Start difference. First operand 4575 states and 7018 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:34,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:34,494 INFO L93 Difference]: Finished difference Result 12541 states and 19291 transitions. [2022-11-16 11:10:34,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:10:34,495 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-16 11:10:34,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:34,535 INFO L225 Difference]: With dead ends: 12541 [2022-11-16 11:10:34,535 INFO L226 Difference]: Without dead ends: 8001 [2022-11-16 11:10:34,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:10:34,544 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 1012 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:34,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1012 Valid, 242 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:10:34,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8001 states. [2022-11-16 11:10:35,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8001 to 7999. [2022-11-16 11:10:35,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7999 states, 7998 states have (on average 1.5250062515628908) internal successors, (12197), 7998 states have internal predecessors, (12197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:35,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7999 states to 7999 states and 12197 transitions. [2022-11-16 11:10:35,946 INFO L78 Accepts]: Start accepts. Automaton has 7999 states and 12197 transitions. Word has length 67 [2022-11-16 11:10:35,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:35,947 INFO L495 AbstractCegarLoop]: Abstraction has 7999 states and 12197 transitions. [2022-11-16 11:10:35,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:35,947 INFO L276 IsEmpty]: Start isEmpty. Operand 7999 states and 12197 transitions. [2022-11-16 11:10:35,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 11:10:35,950 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:35,950 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:35,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:10:35,951 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:35,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:35,952 INFO L85 PathProgramCache]: Analyzing trace with hash -767077788, now seen corresponding path program 1 times [2022-11-16 11:10:35,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:35,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479365363] [2022-11-16 11:10:35,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:35,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:35,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:36,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:36,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:36,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479365363] [2022-11-16 11:10:36,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479365363] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:36,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:36,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:10:36,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924387148] [2022-11-16 11:10:36,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:36,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:10:36,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:36,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:10:36,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:10:36,272 INFO L87 Difference]: Start difference. First operand 7999 states and 12197 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:39,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:39,404 INFO L93 Difference]: Finished difference Result 15649 states and 23806 transitions. [2022-11-16 11:10:39,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:10:39,405 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-16 11:10:39,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:39,501 INFO L225 Difference]: With dead ends: 15649 [2022-11-16 11:10:39,502 INFO L226 Difference]: Without dead ends: 15647 [2022-11-16 11:10:39,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:10:39,510 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 244 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:39,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 983 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:10:39,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15647 states. [2022-11-16 11:10:41,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15647 to 8223. [2022-11-16 11:10:41,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8223 states, 8222 states have (on average 1.510702991972756) internal successors, (12421), 8222 states have internal predecessors, (12421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:41,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8223 states to 8223 states and 12421 transitions. [2022-11-16 11:10:41,330 INFO L78 Accepts]: Start accepts. Automaton has 8223 states and 12421 transitions. Word has length 68 [2022-11-16 11:10:41,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:41,331 INFO L495 AbstractCegarLoop]: Abstraction has 8223 states and 12421 transitions. [2022-11-16 11:10:41,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:41,331 INFO L276 IsEmpty]: Start isEmpty. Operand 8223 states and 12421 transitions. [2022-11-16 11:10:41,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-16 11:10:41,334 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:41,335 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:41,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:10:41,335 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:41,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:41,336 INFO L85 PathProgramCache]: Analyzing trace with hash -2026121149, now seen corresponding path program 1 times [2022-11-16 11:10:41,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:41,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55343634] [2022-11-16 11:10:41,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:41,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:41,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:41,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:41,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:41,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55343634] [2022-11-16 11:10:41,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55343634] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:41,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:41,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:10:41,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297346313] [2022-11-16 11:10:41,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:41,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:10:41,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:41,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:10:41,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:10:41,807 INFO L87 Difference]: Start difference. First operand 8223 states and 12421 transitions. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:49,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:49,184 INFO L93 Difference]: Finished difference Result 39234 states and 58790 transitions. [2022-11-16 11:10:49,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:10:49,185 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-11-16 11:10:49,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:49,292 INFO L225 Difference]: With dead ends: 39234 [2022-11-16 11:10:49,293 INFO L226 Difference]: Without dead ends: 33420 [2022-11-16 11:10:49,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2022-11-16 11:10:49,310 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 2642 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2642 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:49,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2642 Valid, 1140 Invalid, 957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-16 11:10:49,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33420 states. [2022-11-16 11:10:51,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33420 to 8356. [2022-11-16 11:10:51,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8356 states, 8355 states have (on average 1.5076002393776182) internal successors, (12596), 8355 states have internal predecessors, (12596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:51,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8356 states to 8356 states and 12596 transitions. [2022-11-16 11:10:51,221 INFO L78 Accepts]: Start accepts. Automaton has 8356 states and 12596 transitions. Word has length 69 [2022-11-16 11:10:51,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:51,222 INFO L495 AbstractCegarLoop]: Abstraction has 8356 states and 12596 transitions. [2022-11-16 11:10:51,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:51,223 INFO L276 IsEmpty]: Start isEmpty. Operand 8356 states and 12596 transitions. [2022-11-16 11:10:51,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-16 11:10:51,227 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:51,227 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:51,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:10:51,227 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:51,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:51,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1463216125, now seen corresponding path program 1 times [2022-11-16 11:10:51,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:51,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972497551] [2022-11-16 11:10:51,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:51,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:51,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:51,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:51,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:51,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972497551] [2022-11-16 11:10:51,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972497551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:51,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:51,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:10:51,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423340744] [2022-11-16 11:10:51,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:51,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:10:51,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:51,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:10:51,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:51,437 INFO L87 Difference]: Start difference. First operand 8356 states and 12596 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:55,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:55,023 INFO L93 Difference]: Finished difference Result 22416 states and 33774 transitions. [2022-11-16 11:10:55,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:10:55,024 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-11-16 11:10:55,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:55,073 INFO L225 Difference]: With dead ends: 22416 [2022-11-16 11:10:55,074 INFO L226 Difference]: Without dead ends: 14766 [2022-11-16 11:10:55,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:55,093 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 248 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:55,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 610 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:10:55,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14766 states. [2022-11-16 11:10:57,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14766 to 14764. [2022-11-16 11:10:57,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14764 states, 14763 states have (on average 1.4942762311183364) internal successors, (22060), 14763 states have internal predecessors, (22060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:57,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14764 states to 14764 states and 22060 transitions. [2022-11-16 11:10:57,753 INFO L78 Accepts]: Start accepts. Automaton has 14764 states and 22060 transitions. Word has length 69 [2022-11-16 11:10:57,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:57,753 INFO L495 AbstractCegarLoop]: Abstraction has 14764 states and 22060 transitions. [2022-11-16 11:10:57,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:57,754 INFO L276 IsEmpty]: Start isEmpty. Operand 14764 states and 22060 transitions. [2022-11-16 11:10:57,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-16 11:10:57,757 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:57,757 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] [2022-11-16 11:10:57,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:10:57,758 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:57,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:57,759 INFO L85 PathProgramCache]: Analyzing trace with hash -304742627, now seen corresponding path program 1 times [2022-11-16 11:10:57,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:57,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004202361] [2022-11-16 11:10:57,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:57,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:57,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:57,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:57,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:57,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004202361] [2022-11-16 11:10:57,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004202361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:57,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:57,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:10:57,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810413175] [2022-11-16 11:10:57,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:57,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:10:57,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:57,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:10:57,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:10:57,831 INFO L87 Difference]: Start difference. First operand 14764 states and 22060 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:01,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:01,154 INFO L93 Difference]: Finished difference Result 27434 states and 40981 transitions. [2022-11-16 11:11:01,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:11:01,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-11-16 11:11:01,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:01,210 INFO L225 Difference]: With dead ends: 27434 [2022-11-16 11:11:01,210 INFO L226 Difference]: Without dead ends: 18404 [2022-11-16 11:11:01,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:11:01,228 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 155 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:01,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 480 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:11:01,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18404 states. [2022-11-16 11:11:05,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18404 to 18186. [2022-11-16 11:11:05,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18186 states, 18185 states have (on average 1.4720373934561453) internal successors, (26769), 18185 states have internal predecessors, (26769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:05,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18186 states to 18186 states and 26769 transitions. [2022-11-16 11:11:05,316 INFO L78 Accepts]: Start accepts. Automaton has 18186 states and 26769 transitions. Word has length 70 [2022-11-16 11:11:05,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:05,317 INFO L495 AbstractCegarLoop]: Abstraction has 18186 states and 26769 transitions. [2022-11-16 11:11:05,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:05,317 INFO L276 IsEmpty]: Start isEmpty. Operand 18186 states and 26769 transitions. [2022-11-16 11:11:05,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-16 11:11:05,321 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:05,322 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:05,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:11:05,322 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:05,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:05,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1753930236, now seen corresponding path program 1 times [2022-11-16 11:11:05,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:05,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290434293] [2022-11-16 11:11:05,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:05,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:05,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:05,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:11:05,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:05,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290434293] [2022-11-16 11:11:05,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290434293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:05,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:05,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:11:05,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135294392] [2022-11-16 11:11:05,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:05,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:11:05,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:05,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:11:05,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:11:05,518 INFO L87 Difference]: Start difference. First operand 18186 states and 26769 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:10,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:10,902 INFO L93 Difference]: Finished difference Result 35144 states and 51914 transitions. [2022-11-16 11:11:10,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:11:10,903 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-11-16 11:11:10,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:10,980 INFO L225 Difference]: With dead ends: 35144 [2022-11-16 11:11:10,980 INFO L226 Difference]: Without dead ends: 31926 [2022-11-16 11:11:10,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:11:10,997 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 1055 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1055 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:10,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1055 Valid, 1160 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:11:11,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31926 states. [2022-11-16 11:11:15,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31926 to 21364. [2022-11-16 11:11:16,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21364 states, 21363 states have (on average 1.4699714459579647) internal successors, (31403), 21363 states have internal predecessors, (31403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:16,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21364 states to 21364 states and 31403 transitions. [2022-11-16 11:11:16,064 INFO L78 Accepts]: Start accepts. Automaton has 21364 states and 31403 transitions. Word has length 70 [2022-11-16 11:11:16,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:16,065 INFO L495 AbstractCegarLoop]: Abstraction has 21364 states and 31403 transitions. [2022-11-16 11:11:16,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:16,065 INFO L276 IsEmpty]: Start isEmpty. Operand 21364 states and 31403 transitions. [2022-11-16 11:11:16,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-16 11:11:16,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:16,070 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] [2022-11-16 11:11:16,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:11:16,070 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:16,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:16,071 INFO L85 PathProgramCache]: Analyzing trace with hash 314737884, now seen corresponding path program 1 times [2022-11-16 11:11:16,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:16,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018484182] [2022-11-16 11:11:16,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:16,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:16,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:16,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:11:16,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:16,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018484182] [2022-11-16 11:11:16,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018484182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:16,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:16,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:11:16,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262142662] [2022-11-16 11:11:16,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:16,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:11:16,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:16,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:11:16,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:11:16,168 INFO L87 Difference]: Start difference. First operand 21364 states and 31403 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:21,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:21,839 INFO L93 Difference]: Finished difference Result 45706 states and 67045 transitions. [2022-11-16 11:11:21,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:11:21,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-11-16 11:11:21,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:21,894 INFO L225 Difference]: With dead ends: 45706 [2022-11-16 11:11:21,894 INFO L226 Difference]: Without dead ends: 26690 [2022-11-16 11:11:21,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:11:21,922 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 162 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:21,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 495 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:11:21,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26690 states. [2022-11-16 11:11:27,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26690 to 26448. [2022-11-16 11:11:27,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26448 states, 26447 states have (on average 1.4400499111430407) internal successors, (38085), 26447 states have internal predecessors, (38085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:27,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26448 states to 26448 states and 38085 transitions. [2022-11-16 11:11:27,604 INFO L78 Accepts]: Start accepts. Automaton has 26448 states and 38085 transitions. Word has length 70 [2022-11-16 11:11:27,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:27,604 INFO L495 AbstractCegarLoop]: Abstraction has 26448 states and 38085 transitions. [2022-11-16 11:11:27,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:27,605 INFO L276 IsEmpty]: Start isEmpty. Operand 26448 states and 38085 transitions. [2022-11-16 11:11:27,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-16 11:11:27,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:27,610 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] [2022-11-16 11:11:27,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:11:27,610 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:27,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:27,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1498705795, now seen corresponding path program 1 times [2022-11-16 11:11:27,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:27,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566932516] [2022-11-16 11:11:27,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:27,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:27,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:11:27,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:27,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566932516] [2022-11-16 11:11:27,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566932516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:27,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:27,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:11:27,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407780249] [2022-11-16 11:11:27,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:27,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:11:27,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:27,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:11:27,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:11:27,683 INFO L87 Difference]: Start difference. First operand 26448 states and 38085 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:35,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:35,232 INFO L93 Difference]: Finished difference Result 58588 states and 84202 transitions. [2022-11-16 11:11:35,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:11:35,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-11-16 11:11:35,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:35,288 INFO L225 Difference]: With dead ends: 58588 [2022-11-16 11:11:35,288 INFO L226 Difference]: Without dead ends: 34400 [2022-11-16 11:11:35,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:11:35,310 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 173 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:35,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 463 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:11:35,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34400 states. [2022-11-16 11:11:43,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34400 to 34292. [2022-11-16 11:11:43,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34292 states, 34291 states have (on average 1.4152109883059696) internal successors, (48529), 34291 states have internal predecessors, (48529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:43,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34292 states to 34292 states and 48529 transitions. [2022-11-16 11:11:43,827 INFO L78 Accepts]: Start accepts. Automaton has 34292 states and 48529 transitions. Word has length 70 [2022-11-16 11:11:43,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:43,827 INFO L495 AbstractCegarLoop]: Abstraction has 34292 states and 48529 transitions. [2022-11-16 11:11:43,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:43,827 INFO L276 IsEmpty]: Start isEmpty. Operand 34292 states and 48529 transitions. [2022-11-16 11:11:43,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-16 11:11:43,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:43,833 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] [2022-11-16 11:11:43,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:11:43,834 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:43,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:43,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1600159939, now seen corresponding path program 1 times [2022-11-16 11:11:43,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:43,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373087187] [2022-11-16 11:11:43,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:43,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:43,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:44,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:11:44,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:44,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373087187] [2022-11-16 11:11:44,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373087187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:44,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:44,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:11:44,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074450961] [2022-11-16 11:11:44,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:44,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:11:44,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:44,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:11:44,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:11:44,008 INFO L87 Difference]: Start difference. First operand 34292 states and 48529 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:11:56,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:56,604 INFO L93 Difference]: Finished difference Result 66114 states and 94081 transitions. [2022-11-16 11:11:56,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:11:56,605 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-11-16 11:11:56,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:56,916 INFO L225 Difference]: With dead ends: 66114 [2022-11-16 11:11:56,916 INFO L226 Difference]: Without dead ends: 58072 [2022-11-16 11:11:56,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:11:56,946 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 1035 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 1383 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:56,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 1383 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:11:57,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58072 states.