./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69b960d-e7b0-4434-979c-6429c3957ac9/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69b960d-e7b0-4434-979c-6429c3957ac9/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69b960d-e7b0-4434-979c-6429c3957ac9/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69b960d-e7b0-4434-979c-6429c3957ac9/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69b960d-e7b0-4434-979c-6429c3957ac9/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69b960d-e7b0-4434-979c-6429c3957ac9/bin/uautomizer-J5u9QxTXDZ --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 2164ea7ff9e119435a975a3ff24098e6247a3cb559bae891b283444f40f36a64 --- 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-dbf71c6-m [2022-10-17 10:43:26,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:43:26,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:43:26,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:43:26,335 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:43:26,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:43:26,342 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:43:26,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:43:26,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:43:26,354 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:43:26,355 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:43:26,358 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:43:26,358 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:43:26,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:43:26,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:43:26,366 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:43:26,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:43:26,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:43:26,371 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:43:26,378 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:43:26,380 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:43:26,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:43:26,385 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:43:26,387 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:43:26,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:43:26,397 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:43:26,398 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:43:26,400 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:43:26,401 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:43:26,402 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:43:26,402 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:43:26,404 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:43:26,406 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:43:26,407 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:43:26,408 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:43:26,409 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:43:26,409 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:43:26,410 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:43:26,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:43:26,411 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:43:26,412 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:43:26,413 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69b960d-e7b0-4434-979c-6429c3957ac9/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:43:26,456 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:43:26,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:43:26,457 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:43:26,457 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:43:26,458 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:43:26,458 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:43:26,459 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:43:26,459 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:43:26,460 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:43:26,460 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:43:26,461 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:43:26,461 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:43:26,462 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:43:26,462 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:43:26,462 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:43:26,462 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:43:26,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:43:26,463 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:43:26,463 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:43:26,463 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:43:26,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:43:26,464 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:43:26,464 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:43:26,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:43:26,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:43:26,465 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:43:26,465 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:43:26,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:43:26,472 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:43:26,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:43:26,473 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:43:26,473 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:43:26,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:43:26,473 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_b69b960d-e7b0-4434-979c-6429c3957ac9/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69b960d-e7b0-4434-979c-6429c3957ac9/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2164ea7ff9e119435a975a3ff24098e6247a3cb559bae891b283444f40f36a64 [2022-10-17 10:43:26,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:43:26,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:43:26,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:43:26,760 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:43:26,761 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:43:26,762 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69b960d-e7b0-4434-979c-6429c3957ac9/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+nlh-reducer.c [2022-10-17 10:43:26,830 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69b960d-e7b0-4434-979c-6429c3957ac9/bin/uautomizer-J5u9QxTXDZ/data/d0c980008/30dc83b09ea3489a9c0d106b4e9aef45/FLAG0d22542c1 [2022-10-17 10:43:27,400 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:43:27,401 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69b960d-e7b0-4434-979c-6429c3957ac9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+nlh-reducer.c [2022-10-17 10:43:27,418 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69b960d-e7b0-4434-979c-6429c3957ac9/bin/uautomizer-J5u9QxTXDZ/data/d0c980008/30dc83b09ea3489a9c0d106b4e9aef45/FLAG0d22542c1 [2022-10-17 10:43:27,670 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69b960d-e7b0-4434-979c-6429c3957ac9/bin/uautomizer-J5u9QxTXDZ/data/d0c980008/30dc83b09ea3489a9c0d106b4e9aef45 [2022-10-17 10:43:27,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:43:27,673 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:43:27,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:43:27,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:43:27,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:43:27,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:43:27" (1/1) ... [2022-10-17 10:43:27,682 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36d4181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:27, skipping insertion in model container [2022-10-17 10:43:27,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:43:27" (1/1) ... [2022-10-17 10:43:27,690 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:43:27,747 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:43:28,088 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69b960d-e7b0-4434-979c-6429c3957ac9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+nlh-reducer.c[11829,11842] [2022-10-17 10:43:28,166 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:43:28,181 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:43:28,296 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69b960d-e7b0-4434-979c-6429c3957ac9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+nlh-reducer.c[11829,11842] [2022-10-17 10:43:28,350 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:43:28,375 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:43:28,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:28 WrapperNode [2022-10-17 10:43:28,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:43:28,376 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:43:28,377 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:43:28,377 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:43:28,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:28" (1/1) ... [2022-10-17 10:43:28,411 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:28" (1/1) ... [2022-10-17 10:43:28,464 INFO L138 Inliner]: procedures = 27, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 962 [2022-10-17 10:43:28,464 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:43:28,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:43:28,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:43:28,465 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:43:28,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:28" (1/1) ... [2022-10-17 10:43:28,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:28" (1/1) ... [2022-10-17 10:43:28,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:28" (1/1) ... [2022-10-17 10:43:28,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:28" (1/1) ... [2022-10-17 10:43:28,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:28" (1/1) ... [2022-10-17 10:43:28,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:28" (1/1) ... [2022-10-17 10:43:28,514 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:28" (1/1) ... [2022-10-17 10:43:28,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:28" (1/1) ... [2022-10-17 10:43:28,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:43:28,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:43:28,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:43:28,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:43:28,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:28" (1/1) ... [2022-10-17 10:43:28,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:43:28,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69b960d-e7b0-4434-979c-6429c3957ac9/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:43:28,560 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69b960d-e7b0-4434-979c-6429c3957ac9/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:43:28,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69b960d-e7b0-4434-979c-6429c3957ac9/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:43:28,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:43:28,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:43:28,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:43:28,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:43:28,772 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:43:28,774 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:43:29,763 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:43:29,777 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:43:29,778 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:43:29,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:43:29 BoogieIcfgContainer [2022-10-17 10:43:29,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:43:29,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:43:29,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:43:29,787 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:43:29,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:43:27" (1/3) ... [2022-10-17 10:43:29,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@565bf676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:43:29, skipping insertion in model container [2022-10-17 10:43:29,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:28" (2/3) ... [2022-10-17 10:43:29,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@565bf676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:43:29, skipping insertion in model container [2022-10-17 10:43:29,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:43:29" (3/3) ... [2022-10-17 10:43:29,791 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+nlh-reducer.c [2022-10-17 10:43:29,813 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:43:29,813 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:43:29,887 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:43:29,895 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;@64c0576, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:43:29,895 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:43:29,901 INFO L276 IsEmpty]: Start isEmpty. Operand has 232 states, 230 states have (on average 1.7695652173913043) internal successors, (407), 231 states have internal predecessors, (407), 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) [2022-10-17 10:43:29,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-10-17 10:43:29,916 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:43:29,917 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:43:29,917 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:43:29,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:29,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1788351764, now seen corresponding path program 1 times [2022-10-17 10:43:29,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:29,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245656256] [2022-10-17 10:43:29,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:29,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:30,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:30,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:43:30,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:43:30,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245656256] [2022-10-17 10:43:30,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245656256] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:43:30,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:43:30,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-10-17 10:43:30,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537784834] [2022-10-17 10:43:30,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:43:30,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 10:43:30,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:43:30,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 10:43:30,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:43:31,000 INFO L87 Difference]: Start difference. First operand has 232 states, 230 states have (on average 1.7695652173913043) internal successors, (407), 231 states have internal predecessors, (407), 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 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 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) [2022-10-17 10:43:32,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:43:32,100 INFO L93 Difference]: Finished difference Result 1848 states and 2971 transitions. [2022-10-17 10:43:32,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-17 10:43:32,103 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 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 125 [2022-10-17 10:43:32,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:43:32,147 INFO L225 Difference]: With dead ends: 1848 [2022-10-17 10:43:32,147 INFO L226 Difference]: Without dead ends: 1706 [2022-10-17 10:43:32,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2022-10-17 10:43:32,158 INFO L413 NwaCegarLoop]: 1004 mSDtfsCounter, 3832 mSDsluCounter, 7254 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3832 SdHoareTripleChecker+Valid, 8258 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:43:32,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3832 Valid, 8258 Invalid, 570 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-17 10:43:32,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2022-10-17 10:43:32,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 349. [2022-10-17 10:43:32,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 1.4396551724137931) internal successors, (501), 348 states have internal predecessors, (501), 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) [2022-10-17 10:43:32,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 501 transitions. [2022-10-17 10:43:32,330 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 501 transitions. Word has length 125 [2022-10-17 10:43:32,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:43:32,332 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 501 transitions. [2022-10-17 10:43:32,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 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) [2022-10-17 10:43:32,333 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 501 transitions. [2022-10-17 10:43:32,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-10-17 10:43:32,342 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:43:32,343 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:43:32,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:43:32,343 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:43:32,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:32,344 INFO L85 PathProgramCache]: Analyzing trace with hash 649831019, now seen corresponding path program 1 times [2022-10-17 10:43:32,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:32,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088891851] [2022-10-17 10:43:32,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:32,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:32,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:32,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:43:32,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:43:32,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088891851] [2022-10-17 10:43:32,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088891851] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:43:32,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:43:32,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-10-17 10:43:32,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607646692] [2022-10-17 10:43:32,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:43:32,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 10:43:32,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:43:32,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 10:43:32,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:43:32,897 INFO L87 Difference]: Start difference. First operand 349 states and 501 transitions. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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) [2022-10-17 10:43:33,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:43:33,624 INFO L93 Difference]: Finished difference Result 1961 states and 3049 transitions. [2022-10-17 10:43:33,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:43:33,625 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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 127 [2022-10-17 10:43:33,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:43:33,636 INFO L225 Difference]: With dead ends: 1961 [2022-10-17 10:43:33,637 INFO L226 Difference]: Without dead ends: 1781 [2022-10-17 10:43:33,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-10-17 10:43:33,641 INFO L413 NwaCegarLoop]: 958 mSDtfsCounter, 2719 mSDsluCounter, 3070 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2719 SdHoareTripleChecker+Valid, 4028 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:43:33,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2719 Valid, 4028 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 10:43:33,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1781 states. [2022-10-17 10:43:33,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1781 to 553. [2022-10-17 10:43:33,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 552 states have (on average 1.4945652173913044) internal successors, (825), 552 states have internal predecessors, (825), 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) [2022-10-17 10:43:33,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 825 transitions. [2022-10-17 10:43:33,782 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 825 transitions. Word has length 127 [2022-10-17 10:43:33,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:43:33,785 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 825 transitions. [2022-10-17 10:43:33,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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) [2022-10-17 10:43:33,785 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 825 transitions. [2022-10-17 10:43:33,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-10-17 10:43:33,795 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:43:33,796 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:43:33,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:43:33,796 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:43:33,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:33,797 INFO L85 PathProgramCache]: Analyzing trace with hash -660885545, now seen corresponding path program 1 times [2022-10-17 10:43:33,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:33,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851050540] [2022-10-17 10:43:33,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:33,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:33,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:34,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:43:34,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:43:34,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851050540] [2022-10-17 10:43:34,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851050540] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:43:34,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:43:34,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-10-17 10:43:34,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608266526] [2022-10-17 10:43:34,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:43:34,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 10:43:34,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:43:34,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 10:43:34,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:43:34,240 INFO L87 Difference]: Start difference. First operand 553 states and 825 transitions. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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) [2022-10-17 10:43:35,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:43:35,049 INFO L93 Difference]: Finished difference Result 2165 states and 3373 transitions. [2022-10-17 10:43:35,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:43:35,050 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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 127 [2022-10-17 10:43:35,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:43:35,063 INFO L225 Difference]: With dead ends: 2165 [2022-10-17 10:43:35,063 INFO L226 Difference]: Without dead ends: 1985 [2022-10-17 10:43:35,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-10-17 10:43:35,071 INFO L413 NwaCegarLoop]: 826 mSDtfsCounter, 2883 mSDsluCounter, 3047 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2883 SdHoareTripleChecker+Valid, 3873 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:43:35,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2883 Valid, 3873 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 10:43:35,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2022-10-17 10:43:35,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 841. [2022-10-17 10:43:35,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 840 states have (on average 1.526190476190476) internal successors, (1282), 840 states have internal predecessors, (1282), 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) [2022-10-17 10:43:35,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1282 transitions. [2022-10-17 10:43:35,267 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1282 transitions. Word has length 127 [2022-10-17 10:43:35,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:43:35,268 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 1282 transitions. [2022-10-17 10:43:35,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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) [2022-10-17 10:43:35,269 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1282 transitions. [2022-10-17 10:43:35,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-10-17 10:43:35,271 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:43:35,271 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:43:35,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:43:35,272 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:43:35,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:35,273 INFO L85 PathProgramCache]: Analyzing trace with hash -356396037, now seen corresponding path program 1 times [2022-10-17 10:43:35,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:35,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545279932] [2022-10-17 10:43:35,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:35,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:35,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:43:35,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:43:35,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545279932] [2022-10-17 10:43:35,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545279932] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:43:35,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:43:35,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-10-17 10:43:35,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078209643] [2022-10-17 10:43:35,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:43:35,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 10:43:35,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:43:35,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 10:43:35,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:43:35,690 INFO L87 Difference]: Start difference. First operand 841 states and 1282 transitions. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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) [2022-10-17 10:43:36,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:43:36,564 INFO L93 Difference]: Finished difference Result 2359 states and 3681 transitions. [2022-10-17 10:43:36,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:43:36,565 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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 127 [2022-10-17 10:43:36,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:43:36,578 INFO L225 Difference]: With dead ends: 2359 [2022-10-17 10:43:36,578 INFO L226 Difference]: Without dead ends: 2179 [2022-10-17 10:43:36,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-10-17 10:43:36,590 INFO L413 NwaCegarLoop]: 701 mSDtfsCounter, 3476 mSDsluCounter, 2600 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3476 SdHoareTripleChecker+Valid, 3301 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:43:36,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3476 Valid, 3301 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:43:36,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2179 states. [2022-10-17 10:43:36,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2179 to 1035. [2022-10-17 10:43:36,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 1034 states have (on average 1.5377176015473888) internal successors, (1590), 1034 states have internal predecessors, (1590), 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) [2022-10-17 10:43:36,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1590 transitions. [2022-10-17 10:43:36,874 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1590 transitions. Word has length 127 [2022-10-17 10:43:36,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:43:36,875 INFO L495 AbstractCegarLoop]: Abstraction has 1035 states and 1590 transitions. [2022-10-17 10:43:36,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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) [2022-10-17 10:43:36,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1590 transitions. [2022-10-17 10:43:36,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-10-17 10:43:36,877 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:43:36,877 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:43:36,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:43:36,878 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:43:36,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:36,878 INFO L85 PathProgramCache]: Analyzing trace with hash 995442863, now seen corresponding path program 1 times [2022-10-17 10:43:36,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:36,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550375862] [2022-10-17 10:43:36,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:36,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:36,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:37,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:43:37,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:43:37,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550375862] [2022-10-17 10:43:37,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550375862] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:43:37,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:43:37,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-10-17 10:43:37,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048821987] [2022-10-17 10:43:37,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:43:37,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 10:43:37,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:43:37,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 10:43:37,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:43:37,273 INFO L87 Difference]: Start difference. First operand 1035 states and 1590 transitions. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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) [2022-10-17 10:43:38,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:43:38,232 INFO L93 Difference]: Finished difference Result 2548 states and 3981 transitions. [2022-10-17 10:43:38,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:43:38,233 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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 127 [2022-10-17 10:43:38,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:43:38,247 INFO L225 Difference]: With dead ends: 2548 [2022-10-17 10:43:38,247 INFO L226 Difference]: Without dead ends: 2368 [2022-10-17 10:43:38,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-10-17 10:43:38,249 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 3802 mSDsluCounter, 2597 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3802 SdHoareTripleChecker+Valid, 3157 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:43:38,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3802 Valid, 3157 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:43:38,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2368 states. [2022-10-17 10:43:38,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2368 to 1214. [2022-10-17 10:43:38,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1214 states, 1213 states have (on average 1.5449299258037923) internal successors, (1874), 1213 states have internal predecessors, (1874), 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) [2022-10-17 10:43:38,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 1874 transitions. [2022-10-17 10:43:38,572 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 1874 transitions. Word has length 127 [2022-10-17 10:43:38,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:43:38,573 INFO L495 AbstractCegarLoop]: Abstraction has 1214 states and 1874 transitions. [2022-10-17 10:43:38,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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) [2022-10-17 10:43:38,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 1874 transitions. [2022-10-17 10:43:38,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-10-17 10:43:38,575 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:43:38,576 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:43:38,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:43:38,576 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:43:38,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:38,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1485273227, now seen corresponding path program 1 times [2022-10-17 10:43:38,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:38,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609459228] [2022-10-17 10:43:38,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:38,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:38,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:38,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:43:38,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:43:38,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609459228] [2022-10-17 10:43:38,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609459228] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:43:38,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:43:38,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-10-17 10:43:38,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855876760] [2022-10-17 10:43:38,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:43:38,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 10:43:38,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:43:38,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 10:43:38,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:43:38,945 INFO L87 Difference]: Start difference. First operand 1214 states and 1874 transitions. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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) [2022-10-17 10:43:39,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:43:39,938 INFO L93 Difference]: Finished difference Result 2726 states and 4264 transitions. [2022-10-17 10:43:39,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:43:39,939 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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 127 [2022-10-17 10:43:39,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:43:39,954 INFO L225 Difference]: With dead ends: 2726 [2022-10-17 10:43:39,954 INFO L226 Difference]: Without dead ends: 2546 [2022-10-17 10:43:39,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-10-17 10:43:39,956 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 3939 mSDsluCounter, 2711 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3939 SdHoareTripleChecker+Valid, 3153 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:43:39,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3939 Valid, 3153 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:43:39,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2022-10-17 10:43:40,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 1392. [2022-10-17 10:43:40,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1391 states have (on average 1.5506829618979152) internal successors, (2157), 1391 states have internal predecessors, (2157), 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) [2022-10-17 10:43:40,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 2157 transitions. [2022-10-17 10:43:40,284 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 2157 transitions. Word has length 127 [2022-10-17 10:43:40,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:43:40,284 INFO L495 AbstractCegarLoop]: Abstraction has 1392 states and 2157 transitions. [2022-10-17 10:43:40,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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) [2022-10-17 10:43:40,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 2157 transitions. [2022-10-17 10:43:40,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-10-17 10:43:40,287 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:43:40,287 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:43:40,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:43:40,287 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:43:40,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:40,288 INFO L85 PathProgramCache]: Analyzing trace with hash 808098494, now seen corresponding path program 1 times [2022-10-17 10:43:40,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:40,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101024674] [2022-10-17 10:43:40,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:40,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:40,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:40,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:43:40,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:43:40,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101024674] [2022-10-17 10:43:40,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101024674] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:43:40,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:43:40,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-10-17 10:43:40,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547991907] [2022-10-17 10:43:40,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:43:40,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 10:43:40,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:43:40,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 10:43:40,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:43:40,909 INFO L87 Difference]: Start difference. First operand 1392 states and 2157 transitions. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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) [2022-10-17 10:43:41,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:43:41,768 INFO L93 Difference]: Finished difference Result 2553 states and 3999 transitions. [2022-10-17 10:43:41,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:43:41,769 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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 127 [2022-10-17 10:43:41,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:43:41,777 INFO L225 Difference]: With dead ends: 2553 [2022-10-17 10:43:41,777 INFO L226 Difference]: Without dead ends: 1394 [2022-10-17 10:43:41,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:43:41,780 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 2081 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2081 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:43:41,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2081 Valid, 1590 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:43:41,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2022-10-17 10:43:42,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 1392. [2022-10-17 10:43:42,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1391 states have (on average 1.5456506110711719) internal successors, (2150), 1391 states have internal predecessors, (2150), 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) [2022-10-17 10:43:42,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 2150 transitions. [2022-10-17 10:43:42,121 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 2150 transitions. Word has length 127 [2022-10-17 10:43:42,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:43:42,122 INFO L495 AbstractCegarLoop]: Abstraction has 1392 states and 2150 transitions. [2022-10-17 10:43:42,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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) [2022-10-17 10:43:42,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 2150 transitions. [2022-10-17 10:43:42,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-10-17 10:43:42,124 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:43:42,124 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:43:42,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:43:42,125 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:43:42,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:42,125 INFO L85 PathProgramCache]: Analyzing trace with hash 528748287, now seen corresponding path program 1 times [2022-10-17 10:43:42,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:42,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291575745] [2022-10-17 10:43:42,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:42,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:42,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:42,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:43:42,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:43:42,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291575745] [2022-10-17 10:43:42,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291575745] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:43:42,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:43:42,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:43:42,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127642589] [2022-10-17 10:43:42,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:43:42,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:43:42,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:43:42,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:43:42,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:43:42,241 INFO L87 Difference]: Start difference. First operand 1392 states and 2150 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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) [2022-10-17 10:43:43,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:43:43,026 INFO L93 Difference]: Finished difference Result 3626 states and 5677 transitions. [2022-10-17 10:43:43,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:43:43,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 127 [2022-10-17 10:43:43,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:43:43,040 INFO L225 Difference]: With dead ends: 3626 [2022-10-17 10:43:43,041 INFO L226 Difference]: Without dead ends: 2467 [2022-10-17 10:43:43,043 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 [2022-10-17 10:43:43,044 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 131 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:43:43,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 736 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:43:43,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2467 states. [2022-10-17 10:43:43,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2467 to 2465. [2022-10-17 10:43:43,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2465 states, 2464 states have (on average 1.5487012987012987) internal successors, (3816), 2464 states have internal predecessors, (3816), 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) [2022-10-17 10:43:43,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 3816 transitions. [2022-10-17 10:43:43,729 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 3816 transitions. Word has length 127 [2022-10-17 10:43:43,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:43:43,731 INFO L495 AbstractCegarLoop]: Abstraction has 2465 states and 3816 transitions. [2022-10-17 10:43:43,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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) [2022-10-17 10:43:43,731 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 3816 transitions. [2022-10-17 10:43:43,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-10-17 10:43:43,733 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:43:43,733 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:43:43,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:43:43,734 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:43:43,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:43,734 INFO L85 PathProgramCache]: Analyzing trace with hash -19934321, now seen corresponding path program 1 times [2022-10-17 10:43:43,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:43,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137639836] [2022-10-17 10:43:43,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:43,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:43,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:44,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:43:44,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:43:44,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137639836] [2022-10-17 10:43:44,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137639836] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:43:44,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:43:44,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-10-17 10:43:44,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576164185] [2022-10-17 10:43:44,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:43:44,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 10:43:44,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:43:44,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 10:43:44,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:43:44,095 INFO L87 Difference]: Start difference. First operand 2465 states and 3816 transitions. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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) [2022-10-17 10:43:45,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:43:45,930 INFO L93 Difference]: Finished difference Result 5298 states and 8255 transitions. [2022-10-17 10:43:45,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:43:45,931 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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 127 [2022-10-17 10:43:45,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:43:45,958 INFO L225 Difference]: With dead ends: 5298 [2022-10-17 10:43:45,959 INFO L226 Difference]: Without dead ends: 4953 [2022-10-17 10:43:45,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-10-17 10:43:45,963 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 2944 mSDsluCounter, 2940 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2944 SdHoareTripleChecker+Valid, 3509 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:43:45,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2944 Valid, 3509 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:43:45,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4953 states. [2022-10-17 10:43:46,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4953 to 2814. [2022-10-17 10:43:46,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2814 states, 2813 states have (on average 1.5510131532172058) internal successors, (4363), 2813 states have internal predecessors, (4363), 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) [2022-10-17 10:43:46,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2814 states to 2814 states and 4363 transitions. [2022-10-17 10:43:46,794 INFO L78 Accepts]: Start accepts. Automaton has 2814 states and 4363 transitions. Word has length 127 [2022-10-17 10:43:46,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:43:46,794 INFO L495 AbstractCegarLoop]: Abstraction has 2814 states and 4363 transitions. [2022-10-17 10:43:46,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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) [2022-10-17 10:43:46,795 INFO L276 IsEmpty]: Start isEmpty. Operand 2814 states and 4363 transitions. [2022-10-17 10:43:46,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-10-17 10:43:46,797 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:43:46,797 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:43:46,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 10:43:46,797 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:43:46,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:46,798 INFO L85 PathProgramCache]: Analyzing trace with hash -2122526909, now seen corresponding path program 1 times [2022-10-17 10:43:46,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:46,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913600806] [2022-10-17 10:43:46,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:46,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:46,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:47,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:43:47,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:43:47,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913600806] [2022-10-17 10:43:47,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913600806] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:43:47,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:43:47,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-10-17 10:43:47,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753998031] [2022-10-17 10:43:47,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:43:47,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 10:43:47,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:43:47,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 10:43:47,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:43:47,107 INFO L87 Difference]: Start difference. First operand 2814 states and 4363 transitions. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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) [2022-10-17 10:43:49,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:43:49,134 INFO L93 Difference]: Finished difference Result 5647 states and 8802 transitions. [2022-10-17 10:43:49,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:43:49,135 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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 127 [2022-10-17 10:43:49,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:43:49,165 INFO L225 Difference]: With dead ends: 5647 [2022-10-17 10:43:49,166 INFO L226 Difference]: Without dead ends: 5302 [2022-10-17 10:43:49,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-10-17 10:43:49,169 INFO L413 NwaCegarLoop]: 577 mSDtfsCounter, 3044 mSDsluCounter, 3833 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3044 SdHoareTripleChecker+Valid, 4410 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:43:49,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3044 Valid, 4410 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:43:49,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5302 states. [2022-10-17 10:43:50,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5302 to 3168. [2022-10-17 10:43:50,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3168 states, 3167 states have (on average 1.552889169561099) internal successors, (4918), 3167 states have internal predecessors, (4918), 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) [2022-10-17 10:43:50,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3168 states to 3168 states and 4918 transitions. [2022-10-17 10:43:50,026 INFO L78 Accepts]: Start accepts. Automaton has 3168 states and 4918 transitions. Word has length 127 [2022-10-17 10:43:50,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:43:50,026 INFO L495 AbstractCegarLoop]: Abstraction has 3168 states and 4918 transitions. [2022-10-17 10:43:50,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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) [2022-10-17 10:43:50,027 INFO L276 IsEmpty]: Start isEmpty. Operand 3168 states and 4918 transitions. [2022-10-17 10:43:50,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-10-17 10:43:50,029 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:43:50,029 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:43:50,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-17 10:43:50,029 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:43:50,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:50,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1885363609, now seen corresponding path program 1 times [2022-10-17 10:43:50,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:50,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039699989] [2022-10-17 10:43:50,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:50,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:50,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:50,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:43:50,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:43:50,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039699989] [2022-10-17 10:43:50,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039699989] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:43:50,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:43:50,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-10-17 10:43:50,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289398539] [2022-10-17 10:43:50,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:43:50,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 10:43:50,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:43:50,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 10:43:50,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:43:50,330 INFO L87 Difference]: Start difference. First operand 3168 states and 4918 transitions. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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) [2022-10-17 10:43:52,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:43:52,332 INFO L93 Difference]: Finished difference Result 6011 states and 9373 transitions. [2022-10-17 10:43:52,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:43:52,333 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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 127 [2022-10-17 10:43:52,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:43:52,346 INFO L225 Difference]: With dead ends: 6011 [2022-10-17 10:43:52,346 INFO L226 Difference]: Without dead ends: 5666 [2022-10-17 10:43:52,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-10-17 10:43:52,349 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 3378 mSDsluCounter, 4130 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3378 SdHoareTripleChecker+Valid, 4615 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:43:52,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3378 Valid, 4615 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:43:52,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5666 states. [2022-10-17 10:43:53,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5666 to 3537. [2022-10-17 10:43:53,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3537 states, 3536 states have (on average 1.554581447963801) internal successors, (5497), 3536 states have internal predecessors, (5497), 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) [2022-10-17 10:43:53,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3537 states to 3537 states and 5497 transitions. [2022-10-17 10:43:53,222 INFO L78 Accepts]: Start accepts. Automaton has 3537 states and 5497 transitions. Word has length 127 [2022-10-17 10:43:53,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:43:53,223 INFO L495 AbstractCegarLoop]: Abstraction has 3537 states and 5497 transitions. [2022-10-17 10:43:53,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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) [2022-10-17 10:43:53,223 INFO L276 IsEmpty]: Start isEmpty. Operand 3537 states and 5497 transitions. [2022-10-17 10:43:53,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-10-17 10:43:53,225 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:43:53,226 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:43:53,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-17 10:43:53,226 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:43:53,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:53,227 INFO L85 PathProgramCache]: Analyzing trace with hash -720659575, now seen corresponding path program 1 times [2022-10-17 10:43:53,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:53,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383508427] [2022-10-17 10:43:53,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:53,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:53,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:43:53,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:43:53,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383508427] [2022-10-17 10:43:53,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383508427] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:43:53,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:43:53,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:43:53,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693272669] [2022-10-17 10:43:53,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:43:53,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:43:53,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:43:53,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:43:53,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:43:53,390 INFO L87 Difference]: Start difference. First operand 3537 states and 5497 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 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) [2022-10-17 10:43:55,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:43:55,962 INFO L93 Difference]: Finished difference Result 10400 states and 16247 transitions. [2022-10-17 10:43:55,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:43:55,962 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 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 128 [2022-10-17 10:43:55,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:43:55,973 INFO L225 Difference]: With dead ends: 10400 [2022-10-17 10:43:55,973 INFO L226 Difference]: Without dead ends: 6931 [2022-10-17 10:43:55,979 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 [2022-10-17 10:43:55,980 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 1227 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:43:55,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1227 Valid, 272 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 10:43:55,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6931 states.