./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.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_7f81ecdd-2da6-4ac7-a4a9-b1f8dcb0e82a/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f81ecdd-2da6-4ac7-a4a9-b1f8dcb0e82a/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_7f81ecdd-2da6-4ac7-a4a9-b1f8dcb0e82a/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f81ecdd-2da6-4ac7-a4a9-b1f8dcb0e82a/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f81ecdd-2da6-4ac7-a4a9-b1f8dcb0e82a/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_7f81ecdd-2da6-4ac7-a4a9-b1f8dcb0e82a/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 76e1fb283eaa9b9489ec46678de9c71238e259f3b18cc82b368e6453537b0902 --- 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 10:49:02,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:49:02,274 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:49:02,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:49:02,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:49:02,328 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:49:02,330 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:49:02,333 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:49:02,338 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:49:02,343 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:49:02,344 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:49:02,347 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:49:02,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:49:02,350 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:49:02,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:49:02,354 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:49:02,356 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:49:02,357 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:49:02,359 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:49:02,367 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:49:02,369 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:49:02,370 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:49:02,373 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:49:02,374 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:49:02,384 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:49:02,385 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:49:02,385 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:49:02,387 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:49:02,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:49:02,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:49:02,391 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:49:02,392 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:49:02,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:49:02,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:49:02,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:49:02,396 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:49:02,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:49:02,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:49:02,398 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:49:02,399 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:49:02,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:49:02,400 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f81ecdd-2da6-4ac7-a4a9-b1f8dcb0e82a/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:49:02,446 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:49:02,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:49:02,448 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:49:02,448 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:49:02,449 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:49:02,449 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:49:02,450 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:49:02,450 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:49:02,451 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:49:02,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:49:02,452 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:49:02,452 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:49:02,453 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:49:02,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:49:02,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:49:02,453 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:49:02,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:49:02,454 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:49:02,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:49:02,454 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:49:02,454 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:49:02,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:49:02,455 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:49:02,455 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:49:02,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:49:02,456 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:49:02,456 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:49:02,456 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:49:02,456 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:49:02,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:49:02,457 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:49:02,457 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:49:02,458 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:49:02,458 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_7f81ecdd-2da6-4ac7-a4a9-b1f8dcb0e82a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f81ecdd-2da6-4ac7-a4a9-b1f8dcb0e82a/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 76e1fb283eaa9b9489ec46678de9c71238e259f3b18cc82b368e6453537b0902 [2022-10-17 10:49:02,803 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:49:02,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:49:02,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:49:02,836 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:49:02,837 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:49:02,838 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f81ecdd-2da6-4ac7-a4a9-b1f8dcb0e82a/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2022-10-17 10:49:02,906 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f81ecdd-2da6-4ac7-a4a9-b1f8dcb0e82a/bin/uautomizer-J5u9QxTXDZ/data/166f34f94/413c1b6b03b34ed4833f1ebe94d3e504/FLAG455bd768b [2022-10-17 10:49:03,770 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:49:03,770 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f81ecdd-2da6-4ac7-a4a9-b1f8dcb0e82a/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2022-10-17 10:49:03,802 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f81ecdd-2da6-4ac7-a4a9-b1f8dcb0e82a/bin/uautomizer-J5u9QxTXDZ/data/166f34f94/413c1b6b03b34ed4833f1ebe94d3e504/FLAG455bd768b [2022-10-17 10:49:03,837 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f81ecdd-2da6-4ac7-a4a9-b1f8dcb0e82a/bin/uautomizer-J5u9QxTXDZ/data/166f34f94/413c1b6b03b34ed4833f1ebe94d3e504 [2022-10-17 10:49:03,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:49:03,842 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:49:03,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:49:03,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:49:03,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:49:03,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:49:03" (1/1) ... [2022-10-17 10:49:03,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cd54b97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:49:03, skipping insertion in model container [2022-10-17 10:49:03,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:49:03" (1/1) ... [2022-10-17 10:49:03,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:49:04,005 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:49:04,780 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_7f81ecdd-2da6-4ac7-a4a9-b1f8dcb0e82a/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[39479,39492] [2022-10-17 10:49:05,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:49:05,393 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:49:05,701 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_7f81ecdd-2da6-4ac7-a4a9-b1f8dcb0e82a/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[39479,39492] [2022-10-17 10:49:06,035 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:49:06,068 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:49:06,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:49:06 WrapperNode [2022-10-17 10:49:06,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:49:06,086 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:49:06,086 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:49:06,086 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:49:06,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:49:06" (1/1) ... [2022-10-17 10:49:06,162 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:49:06" (1/1) ... [2022-10-17 10:49:06,265 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 5233 [2022-10-17 10:49:06,266 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:49:06,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:49:06,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:49:06,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:49:06,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:49:06" (1/1) ... [2022-10-17 10:49:06,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:49:06" (1/1) ... [2022-10-17 10:49:06,287 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:49:06" (1/1) ... [2022-10-17 10:49:06,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:49:06" (1/1) ... [2022-10-17 10:49:06,333 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:49:06" (1/1) ... [2022-10-17 10:49:06,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:49:06" (1/1) ... [2022-10-17 10:49:06,382 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:49:06" (1/1) ... [2022-10-17 10:49:06,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:49:06" (1/1) ... [2022-10-17 10:49:06,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:49:06,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:49:06,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:49:06,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:49:06,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:49:06" (1/1) ... [2022-10-17 10:49:06,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:49:06,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f81ecdd-2da6-4ac7-a4a9-b1f8dcb0e82a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:49:06,459 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f81ecdd-2da6-4ac7-a4a9-b1f8dcb0e82a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:49:06,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f81ecdd-2da6-4ac7-a4a9-b1f8dcb0e82a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:49:06,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:49:06,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:49:06,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:49:06,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:49:06,892 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:49:06,894 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:49:10,119 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:49:10,153 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:49:10,154 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:49:10,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:49:10 BoogieIcfgContainer [2022-10-17 10:49:10,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:49:10,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:49:10,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:49:10,165 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:49:10,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:49:03" (1/3) ... [2022-10-17 10:49:10,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ecaa67d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:49:10, skipping insertion in model container [2022-10-17 10:49:10,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:49:06" (2/3) ... [2022-10-17 10:49:10,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ecaa67d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:49:10, skipping insertion in model container [2022-10-17 10:49:10,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:49:10" (3/3) ... [2022-10-17 10:49:10,169 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2022-10-17 10:49:10,188 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:49:10,189 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:49:10,320 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:49:10,330 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;@7669d448, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:49:10,330 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:49:10,358 INFO L276 IsEmpty]: Start isEmpty. Operand has 1524 states, 1522 states have (on average 1.7772667542706964) internal successors, (2705), 1523 states have internal predecessors, (2705), 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 10:49:10,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2022-10-17 10:49:10,407 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:49:10,408 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:49:10,409 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:49:10,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:49:10,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1613009937, now seen corresponding path program 1 times [2022-10-17 10:49:10,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:49:10,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772804717] [2022-10-17 10:49:10,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:49:10,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:49:10,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:49:11,376 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 10:49:11,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:49:11,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772804717] [2022-10-17 10:49:11,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772804717] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:49:11,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:49:11,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:49:11,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388617583] [2022-10-17 10:49:11,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:49:11,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:49:11,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:49:11,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:49:11,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:49:11,420 INFO L87 Difference]: Start difference. First operand has 1524 states, 1522 states have (on average 1.7772667542706964) internal successors, (2705), 1523 states have internal predecessors, (2705), 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 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 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 10:49:11,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:49:11,775 INFO L93 Difference]: Finished difference Result 3048 states and 5320 transitions. [2022-10-17 10:49:11,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:49:11,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 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 372 [2022-10-17 10:49:11,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:49:11,812 INFO L225 Difference]: With dead ends: 3048 [2022-10-17 10:49:11,812 INFO L226 Difference]: Without dead ends: 2112 [2022-10-17 10:49:11,822 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 10:49:11,826 INFO L413 NwaCegarLoop]: 3402 mSDtfsCounter, 1307 mSDsluCounter, 2366 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1307 SdHoareTripleChecker+Valid, 5768 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:49:11,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1307 Valid, 5768 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:49:11,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2112 states. [2022-10-17 10:49:12,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2112 to 2110. [2022-10-17 10:49:12,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2110 states, 2109 states have (on average 1.6789947842579422) internal successors, (3541), 2109 states have internal predecessors, (3541), 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 10:49:12,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2110 states to 2110 states and 3541 transitions. [2022-10-17 10:49:12,065 INFO L78 Accepts]: Start accepts. Automaton has 2110 states and 3541 transitions. Word has length 372 [2022-10-17 10:49:12,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:49:12,068 INFO L495 AbstractCegarLoop]: Abstraction has 2110 states and 3541 transitions. [2022-10-17 10:49:12,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 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 10:49:12,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2110 states and 3541 transitions. [2022-10-17 10:49:12,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2022-10-17 10:49:12,083 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:49:12,083 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:49:12,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:49:12,084 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:49:12,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:49:12,085 INFO L85 PathProgramCache]: Analyzing trace with hash 493525477, now seen corresponding path program 1 times [2022-10-17 10:49:12,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:49:12,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940102830] [2022-10-17 10:49:12,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:49:12,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:49:12,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:49:12,512 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 10:49:12,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:49:12,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940102830] [2022-10-17 10:49:12,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940102830] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:49:12,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:49:12,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:49:12,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252446540] [2022-10-17 10:49:12,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:49:12,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:49:12,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:49:12,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:49:12,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:49:12,520 INFO L87 Difference]: Start difference. First operand 2110 states and 3541 transitions. Second operand has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 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 10:49:12,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:49:12,841 INFO L93 Difference]: Finished difference Result 4486 states and 7428 transitions. [2022-10-17 10:49:12,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:49:12,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 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 372 [2022-10-17 10:49:12,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:49:12,865 INFO L225 Difference]: With dead ends: 4486 [2022-10-17 10:49:12,866 INFO L226 Difference]: Without dead ends: 3036 [2022-10-17 10:49:12,878 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 10:49:12,880 INFO L413 NwaCegarLoop]: 2817 mSDtfsCounter, 1209 mSDsluCounter, 2134 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1209 SdHoareTripleChecker+Valid, 4951 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:49:12,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1209 Valid, 4951 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:49:12,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3036 states. [2022-10-17 10:49:13,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3036 to 3034. [2022-10-17 10:49:13,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3034 states, 3033 states have (on average 1.6623804813715792) internal successors, (5042), 3033 states have internal predecessors, (5042), 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 10:49:13,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3034 states to 3034 states and 5042 transitions. [2022-10-17 10:49:13,144 INFO L78 Accepts]: Start accepts. Automaton has 3034 states and 5042 transitions. Word has length 372 [2022-10-17 10:49:13,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:49:13,147 INFO L495 AbstractCegarLoop]: Abstraction has 3034 states and 5042 transitions. [2022-10-17 10:49:13,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 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 10:49:13,148 INFO L276 IsEmpty]: Start isEmpty. Operand 3034 states and 5042 transitions. [2022-10-17 10:49:13,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2022-10-17 10:49:13,164 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:49:13,165 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:49:13,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:49:13,170 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:49:13,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:49:13,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1929060325, now seen corresponding path program 1 times [2022-10-17 10:49:13,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:49:13,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188698761] [2022-10-17 10:49:13,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:49:13,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:49:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:49:14,041 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 10:49:14,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:49:14,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188698761] [2022-10-17 10:49:14,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188698761] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:49:14,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:49:14,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:49:14,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149328704] [2022-10-17 10:49:14,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:49:14,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:49:14,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:49:14,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:49:14,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:49:14,048 INFO L87 Difference]: Start difference. First operand 3034 states and 5042 transitions. Second operand has 7 states, 7 states have (on average 53.142857142857146) internal successors, (372), 7 states have internal predecessors, (372), 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 10:49:15,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:49:15,814 INFO L93 Difference]: Finished difference Result 10812 states and 18241 transitions. [2022-10-17 10:49:15,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 10:49:15,815 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 53.142857142857146) internal successors, (372), 7 states have internal predecessors, (372), 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 372 [2022-10-17 10:49:15,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:49:15,875 INFO L225 Difference]: With dead ends: 10812 [2022-10-17 10:49:15,875 INFO L226 Difference]: Without dead ends: 10090 [2022-10-17 10:49:15,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:49:15,881 INFO L413 NwaCegarLoop]: 2507 mSDtfsCounter, 9896 mSDsluCounter, 15133 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9896 SdHoareTripleChecker+Valid, 17640 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:49:15,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9896 Valid, 17640 Invalid, 430 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-17 10:49:15,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10090 states. [2022-10-17 10:49:16,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10090 to 4090. [2022-10-17 10:49:16,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4090 states, 4089 states have (on average 1.6664221080948887) internal successors, (6814), 4089 states have internal predecessors, (6814), 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 10:49:16,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4090 states to 4090 states and 6814 transitions. [2022-10-17 10:49:16,535 INFO L78 Accepts]: Start accepts. Automaton has 4090 states and 6814 transitions. Word has length 372 [2022-10-17 10:49:16,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:49:16,536 INFO L495 AbstractCegarLoop]: Abstraction has 4090 states and 6814 transitions. [2022-10-17 10:49:16,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 53.142857142857146) internal successors, (372), 7 states have internal predecessors, (372), 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 10:49:16,537 INFO L276 IsEmpty]: Start isEmpty. Operand 4090 states and 6814 transitions. [2022-10-17 10:49:16,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2022-10-17 10:49:16,553 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:49:16,553 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:49:16,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:49:16,554 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:49:16,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:49:16,555 INFO L85 PathProgramCache]: Analyzing trace with hash -355152036, now seen corresponding path program 1 times [2022-10-17 10:49:16,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:49:16,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793135498] [2022-10-17 10:49:16,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:49:16,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:49:16,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:49:17,107 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 10:49:17,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:49:17,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793135498] [2022-10-17 10:49:17,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793135498] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:49:17,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:49:17,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:49:17,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135458006] [2022-10-17 10:49:17,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:49:17,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:49:17,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:49:17,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:49:17,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:49:17,111 INFO L87 Difference]: Start difference. First operand 4090 states and 6814 transitions. Second operand has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 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 10:49:18,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:49:18,103 INFO L93 Difference]: Finished difference Result 9092 states and 15269 transitions. [2022-10-17 10:49:18,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:49:18,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 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 373 [2022-10-17 10:49:18,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:49:18,172 INFO L225 Difference]: With dead ends: 9092 [2022-10-17 10:49:18,172 INFO L226 Difference]: Without dead ends: 7650 [2022-10-17 10:49:18,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:49:18,184 INFO L413 NwaCegarLoop]: 2795 mSDtfsCounter, 3565 mSDsluCounter, 3260 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3565 SdHoareTripleChecker+Valid, 6055 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:49:18,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3565 Valid, 6055 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:49:18,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7650 states. [2022-10-17 10:49:18,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7650 to 6026. [2022-10-17 10:49:19,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6026 states, 6025 states have (on average 1.6707053941908714) internal successors, (10066), 6025 states have internal predecessors, (10066), 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 10:49:19,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6026 states to 6026 states and 10066 transitions. [2022-10-17 10:49:19,075 INFO L78 Accepts]: Start accepts. Automaton has 6026 states and 10066 transitions. Word has length 373 [2022-10-17 10:49:19,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:49:19,076 INFO L495 AbstractCegarLoop]: Abstraction has 6026 states and 10066 transitions. [2022-10-17 10:49:19,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 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 10:49:19,077 INFO L276 IsEmpty]: Start isEmpty. Operand 6026 states and 10066 transitions. [2022-10-17 10:49:19,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-10-17 10:49:19,093 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:49:19,094 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:49:19,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:49:19,094 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:49:19,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:49:19,095 INFO L85 PathProgramCache]: Analyzing trace with hash 816211433, now seen corresponding path program 1 times [2022-10-17 10:49:19,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:49:19,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871013326] [2022-10-17 10:49:19,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:49:19,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:49:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:49:19,816 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 10:49:19,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:49:19,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871013326] [2022-10-17 10:49:19,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871013326] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:49:19,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:49:19,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:49:19,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813992313] [2022-10-17 10:49:19,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:49:19,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:49:19,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:49:19,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:49:19,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:49:19,821 INFO L87 Difference]: Start difference. First operand 6026 states and 10066 transitions. Second operand has 7 states, 7 states have (on average 53.42857142857143) internal successors, (374), 7 states have internal predecessors, (374), 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 10:49:22,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:49:22,703 INFO L93 Difference]: Finished difference Result 19242 states and 32446 transitions. [2022-10-17 10:49:22,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:49:22,704 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 53.42857142857143) internal successors, (374), 7 states have internal predecessors, (374), 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 374 [2022-10-17 10:49:22,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:49:22,754 INFO L225 Difference]: With dead ends: 19242 [2022-10-17 10:49:22,755 INFO L226 Difference]: Without dead ends: 17800 [2022-10-17 10:49:22,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:49:22,762 INFO L413 NwaCegarLoop]: 3857 mSDtfsCounter, 7448 mSDsluCounter, 9507 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7448 SdHoareTripleChecker+Valid, 13364 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:49:22,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7448 Valid, 13364 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:49:22,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17800 states. [2022-10-17 10:49:24,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17800 to 8354. [2022-10-17 10:49:24,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8354 states, 8353 states have (on average 1.6758050999640848) internal successors, (13998), 8353 states have internal predecessors, (13998), 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 10:49:24,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8354 states to 8354 states and 13998 transitions. [2022-10-17 10:49:24,182 INFO L78 Accepts]: Start accepts. Automaton has 8354 states and 13998 transitions. Word has length 374 [2022-10-17 10:49:24,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:49:24,183 INFO L495 AbstractCegarLoop]: Abstraction has 8354 states and 13998 transitions. [2022-10-17 10:49:24,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 53.42857142857143) internal successors, (374), 7 states have internal predecessors, (374), 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 10:49:24,184 INFO L276 IsEmpty]: Start isEmpty. Operand 8354 states and 13998 transitions. [2022-10-17 10:49:24,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-10-17 10:49:24,200 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:49:24,200 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:49:24,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:49:24,201 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:49:24,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:49:24,202 INFO L85 PathProgramCache]: Analyzing trace with hash -680467245, now seen corresponding path program 1 times [2022-10-17 10:49:24,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:49:24,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941697380] [2022-10-17 10:49:24,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:49:24,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:49:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:49:25,003 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 10:49:25,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:49:25,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941697380] [2022-10-17 10:49:25,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941697380] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:49:25,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:49:25,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:49:25,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360842899] [2022-10-17 10:49:25,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:49:25,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:49:25,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:49:25,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:49:25,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:49:25,015 INFO L87 Difference]: Start difference. First operand 8354 states and 13998 transitions. Second operand has 7 states, 7 states have (on average 53.42857142857143) internal successors, (374), 7 states have internal predecessors, (374), 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 10:49:28,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:49:28,142 INFO L93 Difference]: Finished difference Result 22286 states and 37594 transitions. [2022-10-17 10:49:28,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:49:28,143 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 53.42857142857143) internal successors, (374), 7 states have internal predecessors, (374), 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 374 [2022-10-17 10:49:28,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:49:28,198 INFO L225 Difference]: With dead ends: 22286 [2022-10-17 10:49:28,199 INFO L226 Difference]: Without dead ends: 19412 [2022-10-17 10:49:28,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:49:28,209 INFO L413 NwaCegarLoop]: 3534 mSDtfsCounter, 7386 mSDsluCounter, 9017 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7386 SdHoareTripleChecker+Valid, 12551 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:49:28,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7386 Valid, 12551 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:49:28,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19412 states. [2022-10-17 10:49:30,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19412 to 12118. [2022-10-17 10:49:30,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12118 states, 12117 states have (on average 1.6804489560122142) internal successors, (20362), 12117 states have internal predecessors, (20362), 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 10:49:30,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12118 states to 12118 states and 20362 transitions. [2022-10-17 10:49:30,409 INFO L78 Accepts]: Start accepts. Automaton has 12118 states and 20362 transitions. Word has length 374 [2022-10-17 10:49:30,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:49:30,410 INFO L495 AbstractCegarLoop]: Abstraction has 12118 states and 20362 transitions. [2022-10-17 10:49:30,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 53.42857142857143) internal successors, (374), 7 states have internal predecessors, (374), 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 10:49:30,411 INFO L276 IsEmpty]: Start isEmpty. Operand 12118 states and 20362 transitions. [2022-10-17 10:49:30,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-10-17 10:49:30,427 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:49:30,427 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:49:30,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:49:30,428 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:49:30,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:49:30,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1028241981, now seen corresponding path program 1 times [2022-10-17 10:49:30,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:49:30,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107096178] [2022-10-17 10:49:30,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:49:30,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:49:30,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:49:31,168 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 10:49:31,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:49:31,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107096178] [2022-10-17 10:49:31,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107096178] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:49:31,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:49:31,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:49:31,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120771752] [2022-10-17 10:49:31,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:49:31,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:49:31,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:49:31,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:49:31,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:49:31,172 INFO L87 Difference]: Start difference. First operand 12118 states and 20362 transitions. Second operand has 7 states, 7 states have (on average 53.42857142857143) internal successors, (374), 7 states have internal predecessors, (374), 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)