./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78348f6-48ff-4da7-b89e-c5006b4201fb/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78348f6-48ff-4da7-b89e-c5006b4201fb/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78348f6-48ff-4da7-b89e-c5006b4201fb/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78348f6-48ff-4da7-b89e-c5006b4201fb/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78348f6-48ff-4da7-b89e-c5006b4201fb/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78348f6-48ff-4da7-b89e-c5006b4201fb/bin/uautomizer-verify-4GaUIPS5ZU --witnessprinter.witness.filename witness --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 d9dc4c1afb888b23c0ebc469c8090d62842d0a0c5570d5e56681453b5bd49afb --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:19:18,471 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:19:18,554 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78348f6-48ff-4da7-b89e-c5006b4201fb/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:19:18,558 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:19:18,559 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:19:18,614 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:19:18,615 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:19:18,616 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:19:18,616 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:19:18,622 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:19:18,622 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:19:18,622 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:19:18,623 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:19:18,624 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:19:18,624 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:19:18,624 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:19:18,625 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:19:18,625 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:19:18,632 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:19:18,633 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:19:18,633 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:19:18,646 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:19:18,646 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:19:18,647 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:19:18,647 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:19:18,647 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:19:18,647 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:19:18,648 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:19:18,648 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:19:18,648 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:19:18,649 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:19:18,649 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:19:18,650 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:19:18,650 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:19:18,651 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:19:18,651 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:19:18,651 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:19:18,652 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:19:18,652 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:19:18,652 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:19:18,653 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:19:18,653 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:19:18,653 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_a78348f6-48ff-4da7-b89e-c5006b4201fb/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78348f6-48ff-4da7-b89e-c5006b4201fb/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d9dc4c1afb888b23c0ebc469c8090d62842d0a0c5570d5e56681453b5bd49afb [2024-10-31 22:19:19,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:19:19,061 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:19:19,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:19:19,065 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:19:19,066 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:19:19,067 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78348f6-48ff-4da7-b89e-c5006b4201fb/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c Unable to find full path for "g++" [2024-10-31 22:19:21,122 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:19:21,434 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:19:21,435 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78348f6-48ff-4da7-b89e-c5006b4201fb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2024-10-31 22:19:21,454 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78348f6-48ff-4da7-b89e-c5006b4201fb/bin/uautomizer-verify-4GaUIPS5ZU/data/ddd438803/6ad044bbc59d4a6ca49b8454b69972b8/FLAG18eb7b75e [2024-10-31 22:19:21,496 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78348f6-48ff-4da7-b89e-c5006b4201fb/bin/uautomizer-verify-4GaUIPS5ZU/data/ddd438803/6ad044bbc59d4a6ca49b8454b69972b8 [2024-10-31 22:19:21,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:19:21,500 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:19:21,503 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:19:21,503 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:19:21,510 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:19:21,511 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:19:21" (1/1) ... [2024-10-31 22:19:21,512 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fae0b9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:21, skipping insertion in model container [2024-10-31 22:19:21,515 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:19:21" (1/1) ... [2024-10-31 22:19:21,618 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:19:22,040 WARN L251 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_a78348f6-48ff-4da7-b89e-c5006b4201fb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c[15364,15377] [2024-10-31 22:19:22,189 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:19:22,214 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:19:22,344 WARN L251 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_a78348f6-48ff-4da7-b89e-c5006b4201fb/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c[15364,15377] [2024-10-31 22:19:22,481 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:19:22,515 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:19:22,516 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:22 WrapperNode [2024-10-31 22:19:22,516 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:19:22,518 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:19:22,518 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:19:22,519 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:19:22,544 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:22" (1/1) ... [2024-10-31 22:19:22,579 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:22" (1/1) ... [2024-10-31 22:19:22,671 INFO L138 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1712 [2024-10-31 22:19:22,672 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:19:22,673 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:19:22,673 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:19:22,673 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:19:22,686 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:22" (1/1) ... [2024-10-31 22:19:22,686 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:22" (1/1) ... [2024-10-31 22:19:22,696 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:22" (1/1) ... [2024-10-31 22:19:22,741 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-31 22:19:22,741 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:22" (1/1) ... [2024-10-31 22:19:22,741 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:22" (1/1) ... [2024-10-31 22:19:22,766 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:22" (1/1) ... [2024-10-31 22:19:22,776 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:22" (1/1) ... [2024-10-31 22:19:22,782 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:22" (1/1) ... [2024-10-31 22:19:22,787 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:22" (1/1) ... [2024-10-31 22:19:22,797 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:19:22,802 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:19:22,802 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:19:22,803 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:19:22,803 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:22" (1/1) ... [2024-10-31 22:19:22,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:19:22,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78348f6-48ff-4da7-b89e-c5006b4201fb/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:19:22,863 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78348f6-48ff-4da7-b89e-c5006b4201fb/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:19:22,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a78348f6-48ff-4da7-b89e-c5006b4201fb/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:19:22,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:19:22,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:19:22,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:19:22,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:19:23,099 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:19:23,101 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:19:24,827 INFO L? ?]: Removed 222 outVars from TransFormulas that were not future-live. [2024-10-31 22:19:24,827 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:19:24,867 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:19:24,867 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-31 22:19:24,869 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:19:24 BoogieIcfgContainer [2024-10-31 22:19:24,869 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:19:24,872 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:19:24,872 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:19:24,876 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:19:24,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:19:21" (1/3) ... [2024-10-31 22:19:24,877 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a123a68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:19:24, skipping insertion in model container [2024-10-31 22:19:24,878 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:22" (2/3) ... [2024-10-31 22:19:24,878 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a123a68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:19:24, skipping insertion in model container [2024-10-31 22:19:24,879 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:19:24" (3/3) ... [2024-10-31 22:19:24,882 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2024-10-31 22:19:24,903 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:19:24,903 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:19:25,015 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:19:25,025 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@424d0df0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:19:25,026 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 22:19:25,034 INFO L276 IsEmpty]: Start isEmpty. Operand has 487 states, 485 states have (on average 1.6494845360824741) internal successors, (800), 486 states have internal predecessors, (800), 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) [2024-10-31 22:19:25,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-10-31 22:19:25,056 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:19:25,056 INFO L215 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] [2024-10-31 22:19:25,058 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:19:25,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:25,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1982597538, now seen corresponding path program 1 times [2024-10-31 22:19:25,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:25,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865885067] [2024-10-31 22:19:25,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:25,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:25,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:25,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:25,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865885067] [2024-10-31 22:19:25,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865885067] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:25,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:25,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:19:25,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266381634] [2024-10-31 22:19:25,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:25,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:19:25,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:25,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:19:25,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:19:25,892 INFO L87 Difference]: Start difference. First operand has 487 states, 485 states have (on average 1.6494845360824741) internal successors, (800), 486 states have internal predecessors, (800), 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 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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) [2024-10-31 22:19:26,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:19:26,116 INFO L93 Difference]: Finished difference Result 932 states and 1517 transitions. [2024-10-31 22:19:26,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:19:26,119 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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 119 [2024-10-31 22:19:26,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:19:26,133 INFO L225 Difference]: With dead ends: 932 [2024-10-31 22:19:26,134 INFO L226 Difference]: Without dead ends: 484 [2024-10-31 22:19:26,140 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:19:26,145 INFO L432 NwaCegarLoop]: 795 mSDtfsCounter, 175 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 2153 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:19:26,147 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 2153 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:19:26,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2024-10-31 22:19:26,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 484. [2024-10-31 22:19:26,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 483 states have (on average 1.5486542443064182) internal successors, (748), 483 states have internal predecessors, (748), 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) [2024-10-31 22:19:26,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 748 transitions. [2024-10-31 22:19:26,213 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 748 transitions. Word has length 119 [2024-10-31 22:19:26,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:19:26,214 INFO L471 AbstractCegarLoop]: Abstraction has 484 states and 748 transitions. [2024-10-31 22:19:26,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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) [2024-10-31 22:19:26,214 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 748 transitions. [2024-10-31 22:19:26,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-10-31 22:19:26,220 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:19:26,220 INFO L215 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] [2024-10-31 22:19:26,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:19:26,221 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:19:26,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:26,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1369129713, now seen corresponding path program 1 times [2024-10-31 22:19:26,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:26,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346004669] [2024-10-31 22:19:26,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:26,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:26,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:26,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:26,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346004669] [2024-10-31 22:19:26,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346004669] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:26,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:26,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:19:26,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548438771] [2024-10-31 22:19:26,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:26,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:19:26,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:26,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:19:26,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:19:26,509 INFO L87 Difference]: Start difference. First operand 484 states and 748 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2024-10-31 22:19:26,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:19:26,618 INFO L93 Difference]: Finished difference Result 1159 states and 1827 transitions. [2024-10-31 22:19:26,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:19:26,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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 159 [2024-10-31 22:19:26,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:19:26,626 INFO L225 Difference]: With dead ends: 1159 [2024-10-31 22:19:26,626 INFO L226 Difference]: Without dead ends: 746 [2024-10-31 22:19:26,628 INFO L431 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 [2024-10-31 22:19:26,632 INFO L432 NwaCegarLoop]: 884 mSDtfsCounter, 505 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:19:26,633 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 1486 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:19:26,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2024-10-31 22:19:26,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 744. [2024-10-31 22:19:26,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 743 states have (on average 1.5625841184387619) internal successors, (1161), 743 states have internal predecessors, (1161), 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) [2024-10-31 22:19:26,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1161 transitions. [2024-10-31 22:19:26,677 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1161 transitions. Word has length 159 [2024-10-31 22:19:26,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:19:26,678 INFO L471 AbstractCegarLoop]: Abstraction has 744 states and 1161 transitions. [2024-10-31 22:19:26,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2024-10-31 22:19:26,678 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1161 transitions. [2024-10-31 22:19:26,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-10-31 22:19:26,682 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:19:26,682 INFO L215 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] [2024-10-31 22:19:26,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:19:26,683 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:19:26,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:26,684 INFO L85 PathProgramCache]: Analyzing trace with hash -319550929, now seen corresponding path program 1 times [2024-10-31 22:19:26,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:26,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654673517] [2024-10-31 22:19:26,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:26,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:26,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:26,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:26,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:26,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654673517] [2024-10-31 22:19:26,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654673517] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:26,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:26,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:19:26,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065468212] [2024-10-31 22:19:26,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:26,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:19:26,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:26,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:19:26,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:19:26,868 INFO L87 Difference]: Start difference. First operand 744 states and 1161 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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) [2024-10-31 22:19:26,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:19:26,939 INFO L93 Difference]: Finished difference Result 1863 states and 2947 transitions. [2024-10-31 22:19:26,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:19:26,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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 161 [2024-10-31 22:19:26,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:19:26,944 INFO L225 Difference]: With dead ends: 1863 [2024-10-31 22:19:26,945 INFO L226 Difference]: Without dead ends: 1203 [2024-10-31 22:19:26,946 INFO L431 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 [2024-10-31 22:19:26,947 INFO L432 NwaCegarLoop]: 725 mSDtfsCounter, 491 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:19:26,948 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 1302 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:19:26,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2024-10-31 22:19:26,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1201. [2024-10-31 22:19:26,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1200 states have (on average 1.5708333333333333) internal successors, (1885), 1200 states have internal predecessors, (1885), 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) [2024-10-31 22:19:26,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1885 transitions. [2024-10-31 22:19:26,989 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1885 transitions. Word has length 161 [2024-10-31 22:19:26,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:19:26,989 INFO L471 AbstractCegarLoop]: Abstraction has 1201 states and 1885 transitions. [2024-10-31 22:19:26,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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) [2024-10-31 22:19:26,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1885 transitions. [2024-10-31 22:19:26,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-10-31 22:19:26,996 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:19:26,997 INFO L215 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] [2024-10-31 22:19:26,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:19:26,997 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:19:26,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:26,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1930829335, now seen corresponding path program 1 times [2024-10-31 22:19:26,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:26,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521493564] [2024-10-31 22:19:26,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:26,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:27,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:27,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:27,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:27,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521493564] [2024-10-31 22:19:27,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521493564] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:27,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:27,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:19:27,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579105358] [2024-10-31 22:19:27,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:27,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:19:27,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:27,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:19:27,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:19:27,164 INFO L87 Difference]: Start difference. First operand 1201 states and 1885 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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) [2024-10-31 22:19:27,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:19:27,257 INFO L93 Difference]: Finished difference Result 3090 states and 4890 transitions. [2024-10-31 22:19:27,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:19:27,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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 163 [2024-10-31 22:19:27,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:19:27,266 INFO L225 Difference]: With dead ends: 3090 [2024-10-31 22:19:27,266 INFO L226 Difference]: Without dead ends: 1986 [2024-10-31 22:19:27,269 INFO L431 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 [2024-10-31 22:19:27,270 INFO L432 NwaCegarLoop]: 715 mSDtfsCounter, 476 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:19:27,271 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 1267 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:19:27,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1986 states. [2024-10-31 22:19:27,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1986 to 1984. [2024-10-31 22:19:27,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1984 states, 1983 states have (on average 1.572869389813414) internal successors, (3119), 1983 states have internal predecessors, (3119), 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) [2024-10-31 22:19:27,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1984 states to 1984 states and 3119 transitions. [2024-10-31 22:19:27,316 INFO L78 Accepts]: Start accepts. Automaton has 1984 states and 3119 transitions. Word has length 163 [2024-10-31 22:19:27,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:19:27,318 INFO L471 AbstractCegarLoop]: Abstraction has 1984 states and 3119 transitions. [2024-10-31 22:19:27,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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) [2024-10-31 22:19:27,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1984 states and 3119 transitions. [2024-10-31 22:19:27,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-10-31 22:19:27,324 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:19:27,324 INFO L215 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] [2024-10-31 22:19:27,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:19:27,325 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:19:27,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:27,325 INFO L85 PathProgramCache]: Analyzing trace with hash -329393929, now seen corresponding path program 1 times [2024-10-31 22:19:27,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:27,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372341164] [2024-10-31 22:19:27,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:27,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:27,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:27,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:27,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:27,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372341164] [2024-10-31 22:19:27,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372341164] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:27,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:27,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:19:27,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669261825] [2024-10-31 22:19:27,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:27,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:19:27,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:27,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:19:27,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:19:27,484 INFO L87 Difference]: Start difference. First operand 1984 states and 3119 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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) [2024-10-31 22:19:27,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:19:27,558 INFO L93 Difference]: Finished difference Result 5159 states and 8143 transitions. [2024-10-31 22:19:27,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:19:27,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 165 [2024-10-31 22:19:27,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:19:27,569 INFO L225 Difference]: With dead ends: 5159 [2024-10-31 22:19:27,570 INFO L226 Difference]: Without dead ends: 3285 [2024-10-31 22:19:27,572 INFO L431 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 [2024-10-31 22:19:27,573 INFO L432 NwaCegarLoop]: 854 mSDtfsCounter, 460 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 1381 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:19:27,573 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 1381 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:19:27,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3285 states. [2024-10-31 22:19:27,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3285 to 3283. [2024-10-31 22:19:27,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3283 states, 3282 states have (on average 1.568860450944546) internal successors, (5149), 3282 states have internal predecessors, (5149), 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) [2024-10-31 22:19:27,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3283 states to 3283 states and 5149 transitions. [2024-10-31 22:19:27,653 INFO L78 Accepts]: Start accepts. Automaton has 3283 states and 5149 transitions. Word has length 165 [2024-10-31 22:19:27,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:19:27,655 INFO L471 AbstractCegarLoop]: Abstraction has 3283 states and 5149 transitions. [2024-10-31 22:19:27,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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) [2024-10-31 22:19:27,655 INFO L276 IsEmpty]: Start isEmpty. Operand 3283 states and 5149 transitions. [2024-10-31 22:19:27,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-10-31 22:19:27,663 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:19:27,663 INFO L215 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] [2024-10-31 22:19:27,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:19:27,664 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:19:27,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:27,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1942661269, now seen corresponding path program 1 times [2024-10-31 22:19:27,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:27,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014314083] [2024-10-31 22:19:27,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:27,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:27,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:27,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:27,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014314083] [2024-10-31 22:19:27,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014314083] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:27,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:27,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:19:27,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094034193] [2024-10-31 22:19:27,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:27,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:19:27,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:27,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:19:27,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:19:27,899 INFO L87 Difference]: Start difference. First operand 3283 states and 5149 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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) [2024-10-31 22:19:28,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:19:28,003 INFO L93 Difference]: Finished difference Result 8504 states and 13344 transitions. [2024-10-31 22:19:28,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:19:28,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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 167 [2024-10-31 22:19:28,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:19:28,026 INFO L225 Difference]: With dead ends: 8504 [2024-10-31 22:19:28,027 INFO L226 Difference]: Without dead ends: 5344 [2024-10-31 22:19:28,032 INFO L431 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 [2024-10-31 22:19:28,034 INFO L432 NwaCegarLoop]: 844 mSDtfsCounter, 445 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 1346 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:19:28,035 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 1346 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:19:28,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5344 states. [2024-10-31 22:19:28,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5344 to 5342. [2024-10-31 22:19:28,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5342 states, 5341 states have (on average 1.5583224115334207) internal successors, (8323), 5341 states have internal predecessors, (8323), 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) [2024-10-31 22:19:28,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5342 states to 5342 states and 8323 transitions. [2024-10-31 22:19:28,188 INFO L78 Accepts]: Start accepts. Automaton has 5342 states and 8323 transitions. Word has length 167 [2024-10-31 22:19:28,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:19:28,188 INFO L471 AbstractCegarLoop]: Abstraction has 5342 states and 8323 transitions. [2024-10-31 22:19:28,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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) [2024-10-31 22:19:28,189 INFO L276 IsEmpty]: Start isEmpty. Operand 5342 states and 8323 transitions. [2024-10-31 22:19:28,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-10-31 22:19:28,202 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:19:28,203 INFO L215 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] [2024-10-31 22:19:28,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:19:28,203 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:19:28,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:28,204 INFO L85 PathProgramCache]: Analyzing trace with hash 667335103, now seen corresponding path program 1 times [2024-10-31 22:19:28,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:28,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809657414] [2024-10-31 22:19:28,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:28,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:28,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:28,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:28,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:28,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809657414] [2024-10-31 22:19:28,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809657414] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:28,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:28,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 22:19:28,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423633460] [2024-10-31 22:19:28,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:28,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 22:19:28,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:28,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:19:28,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:19:28,642 INFO L87 Difference]: Start difference. First operand 5342 states and 8323 transitions. Second operand has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 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) [2024-10-31 22:19:29,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:19:29,465 INFO L93 Difference]: Finished difference Result 36365 states and 56593 transitions. [2024-10-31 22:19:29,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:19:29,466 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 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 169 [2024-10-31 22:19:29,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:19:29,549 INFO L225 Difference]: With dead ends: 36365 [2024-10-31 22:19:29,549 INFO L226 Difference]: Without dead ends: 31150 [2024-10-31 22:19:29,560 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2024-10-31 22:19:29,561 INFO L432 NwaCegarLoop]: 698 mSDtfsCounter, 8353 mSDsluCounter, 6304 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8353 SdHoareTripleChecker+Valid, 7002 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 22:19:29,561 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8353 Valid, 7002 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 22:19:29,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31150 states. [2024-10-31 22:19:30,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31150 to 10625. [2024-10-31 22:19:30,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10625 states, 10624 states have (on average 1.5423569277108433) internal successors, (16386), 10624 states have internal predecessors, (16386), 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) [2024-10-31 22:19:30,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10625 states to 10625 states and 16386 transitions. [2024-10-31 22:19:30,227 INFO L78 Accepts]: Start accepts. Automaton has 10625 states and 16386 transitions. Word has length 169 [2024-10-31 22:19:30,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:19:30,228 INFO L471 AbstractCegarLoop]: Abstraction has 10625 states and 16386 transitions. [2024-10-31 22:19:30,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 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) [2024-10-31 22:19:30,229 INFO L276 IsEmpty]: Start isEmpty. Operand 10625 states and 16386 transitions. [2024-10-31 22:19:30,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-31 22:19:30,257 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:19:30,257 INFO L215 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] [2024-10-31 22:19:30,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:19:30,258 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:19:30,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:30,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1376750317, now seen corresponding path program 1 times [2024-10-31 22:19:30,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:30,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616650178] [2024-10-31 22:19:30,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:30,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:30,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:30,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:30,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:30,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616650178] [2024-10-31 22:19:30,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616650178] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:30,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:30,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:19:30,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106180418] [2024-10-31 22:19:30,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:30,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:19:30,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:30,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:19:30,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:19:30,425 INFO L87 Difference]: Start difference. First operand 10625 states and 16386 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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) [2024-10-31 22:19:30,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:19:30,642 INFO L93 Difference]: Finished difference Result 30001 states and 46188 transitions. [2024-10-31 22:19:30,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:19:30,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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 172 [2024-10-31 22:19:30,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:19:30,683 INFO L225 Difference]: With dead ends: 30001 [2024-10-31 22:19:30,683 INFO L226 Difference]: Without dead ends: 19429 [2024-10-31 22:19:30,697 INFO L431 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 [2024-10-31 22:19:30,697 INFO L432 NwaCegarLoop]: 995 mSDtfsCounter, 501 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:19:30,698 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 1594 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:19:30,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19429 states. [2024-10-31 22:19:31,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19429 to 19427. [2024-10-31 22:19:31,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19427 states, 19426 states have (on average 1.530371666838258) internal successors, (29729), 19426 states have internal predecessors, (29729), 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) [2024-10-31 22:19:31,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19427 states to 19427 states and 29729 transitions. [2024-10-31 22:19:31,394 INFO L78 Accepts]: Start accepts. Automaton has 19427 states and 29729 transitions. Word has length 172 [2024-10-31 22:19:31,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:19:31,394 INFO L471 AbstractCegarLoop]: Abstraction has 19427 states and 29729 transitions. [2024-10-31 22:19:31,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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) [2024-10-31 22:19:31,395 INFO L276 IsEmpty]: Start isEmpty. Operand 19427 states and 29729 transitions. [2024-10-31 22:19:31,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-10-31 22:19:31,435 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:19:31,435 INFO L215 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] [2024-10-31 22:19:31,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:19:31,436 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:19:31,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:31,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1365392284, now seen corresponding path program 1 times [2024-10-31 22:19:31,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:31,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80277261] [2024-10-31 22:19:31,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:31,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:31,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:31,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:31,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:31,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80277261] [2024-10-31 22:19:31,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80277261] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:31,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:31,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:19:31,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111191480] [2024-10-31 22:19:31,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:31,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:19:31,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:31,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:19:31,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:19:31,721 INFO L87 Difference]: Start difference. First operand 19427 states and 29729 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 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) [2024-10-31 22:19:32,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:19:32,081 INFO L93 Difference]: Finished difference Result 55497 states and 84710 transitions. [2024-10-31 22:19:32,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:19:32,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 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 173 [2024-10-31 22:19:32,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:19:32,161 INFO L225 Difference]: With dead ends: 55497 [2024-10-31 22:19:32,162 INFO L226 Difference]: Without dead ends: 36971 [2024-10-31 22:19:32,187 INFO L431 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 [2024-10-31 22:19:32,190 INFO L432 NwaCegarLoop]: 680 mSDtfsCounter, 496 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:19:32,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 1317 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:19:32,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36971 states. [2024-10-31 22:19:32,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36971 to 36969. [2024-10-31 22:19:33,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36969 states, 36968 states have (on average 1.517447522181346) internal successors, (56097), 36968 states have internal predecessors, (56097), 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) [2024-10-31 22:19:33,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36969 states to 36969 states and 56097 transitions. [2024-10-31 22:19:33,080 INFO L78 Accepts]: Start accepts. Automaton has 36969 states and 56097 transitions. Word has length 173 [2024-10-31 22:19:33,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:19:33,081 INFO L471 AbstractCegarLoop]: Abstraction has 36969 states and 56097 transitions. [2024-10-31 22:19:33,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 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) [2024-10-31 22:19:33,081 INFO L276 IsEmpty]: Start isEmpty. Operand 36969 states and 56097 transitions. [2024-10-31 22:19:33,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-10-31 22:19:33,153 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:19:33,153 INFO L215 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] [2024-10-31 22:19:33,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:19:33,153 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:19:33,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:33,154 INFO L85 PathProgramCache]: Analyzing trace with hash 951048055, now seen corresponding path program 1 times [2024-10-31 22:19:33,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:33,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698742533] [2024-10-31 22:19:33,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:33,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:33,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:33,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:33,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:33,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698742533] [2024-10-31 22:19:33,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698742533] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:33,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:33,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 22:19:33,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230755511] [2024-10-31 22:19:33,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:33,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 22:19:33,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:33,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:19:33,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:19:33,874 INFO L87 Difference]: Start difference. First operand 36969 states and 56097 transitions. Second operand has 8 states, 8 states have (on average 21.625) internal successors, (173), 8 states have internal predecessors, (173), 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) [2024-10-31 22:19:35,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:19:35,541 INFO L93 Difference]: Finished difference Result 157407 states and 235701 transitions. [2024-10-31 22:19:35,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:19:35,542 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.625) internal successors, (173), 8 states have internal predecessors, (173), 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 173 [2024-10-31 22:19:35,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:19:35,952 INFO L225 Difference]: With dead ends: 157407 [2024-10-31 22:19:35,954 INFO L226 Difference]: Without dead ends: 122147 [2024-10-31 22:19:36,054 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:19:36,054 INFO L432 NwaCegarLoop]: 1816 mSDtfsCounter, 4379 mSDsluCounter, 2758 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4379 SdHoareTripleChecker+Valid, 4574 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-31 22:19:36,059 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4379 Valid, 4574 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-31 22:19:36,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122147 states. [2024-10-31 22:19:38,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122147 to 115409. [2024-10-31 22:19:38,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115409 states, 115408 states have (on average 1.4891255372244558) internal successors, (171857), 115408 states have internal predecessors, (171857), 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) [2024-10-31 22:19:38,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115409 states to 115409 states and 171857 transitions. [2024-10-31 22:19:38,984 INFO L78 Accepts]: Start accepts. Automaton has 115409 states and 171857 transitions. Word has length 173 [2024-10-31 22:19:38,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:19:38,984 INFO L471 AbstractCegarLoop]: Abstraction has 115409 states and 171857 transitions. [2024-10-31 22:19:38,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.625) internal successors, (173), 8 states have internal predecessors, (173), 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) [2024-10-31 22:19:38,985 INFO L276 IsEmpty]: Start isEmpty. Operand 115409 states and 171857 transitions. [2024-10-31 22:19:39,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-10-31 22:19:39,245 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:19:39,245 INFO L215 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] [2024-10-31 22:19:39,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 22:19:39,246 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:19:39,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:39,247 INFO L85 PathProgramCache]: Analyzing trace with hash -81970920, now seen corresponding path program 1 times [2024-10-31 22:19:39,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:39,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598758693] [2024-10-31 22:19:39,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:39,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:39,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:39,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:39,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:39,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598758693] [2024-10-31 22:19:39,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598758693] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:39,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:39,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:19:39,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129258581] [2024-10-31 22:19:39,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:39,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:19:39,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:39,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:19:39,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:19:39,476 INFO L87 Difference]: Start difference. First operand 115409 states and 171857 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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) [2024-10-31 22:19:40,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:19:40,845 INFO L93 Difference]: Finished difference Result 286120 states and 425944 transitions. [2024-10-31 22:19:40,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:19:40,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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 176 [2024-10-31 22:19:40,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:19:41,301 INFO L225 Difference]: With dead ends: 286120 [2024-10-31 22:19:41,301 INFO L226 Difference]: Without dead ends: 200457 [2024-10-31 22:19:41,421 INFO L431 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 [2024-10-31 22:19:41,422 INFO L432 NwaCegarLoop]: 1049 mSDtfsCounter, 520 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 1682 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:19:41,422 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [520 Valid, 1682 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:19:41,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200457 states. [2024-10-31 22:19:44,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200457 to 200455. [2024-10-31 22:19:44,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200455 states, 200454 states have (on average 1.4778053817833519) internal successors, (296232), 200454 states have internal predecessors, (296232), 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) [2024-10-31 22:19:45,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200455 states to 200455 states and 296232 transitions. [2024-10-31 22:19:45,621 INFO L78 Accepts]: Start accepts. Automaton has 200455 states and 296232 transitions. Word has length 176 [2024-10-31 22:19:45,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:19:45,621 INFO L471 AbstractCegarLoop]: Abstraction has 200455 states and 296232 transitions. [2024-10-31 22:19:45,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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) [2024-10-31 22:19:45,622 INFO L276 IsEmpty]: Start isEmpty. Operand 200455 states and 296232 transitions. [2024-10-31 22:19:45,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-10-31 22:19:45,852 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:19:45,852 INFO L215 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] [2024-10-31 22:19:45,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-31 22:19:45,852 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:19:45,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:45,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1029314393, now seen corresponding path program 1 times [2024-10-31 22:19:45,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:45,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342957974] [2024-10-31 22:19:45,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:45,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:45,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:45,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:45,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:45,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342957974] [2024-10-31 22:19:45,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342957974] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:45,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:45,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:19:45,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894475575] [2024-10-31 22:19:45,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:45,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:19:45,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:45,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:19:45,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:19:45,996 INFO L87 Difference]: Start difference. First operand 200455 states and 296232 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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) [2024-10-31 22:19:47,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:19:47,697 INFO L93 Difference]: Finished difference Result 464975 states and 687032 transitions. [2024-10-31 22:19:47,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:19:47,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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 176 [2024-10-31 22:19:47,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted.