./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/Mono1_1-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/Mono1_1-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya --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 73587fb730a0fae8f0f61c4bce66b3ef3eca8012a1c96e30e457f1e4f757a73f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:07:52,953 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:07:53,038 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 06:07:53,042 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:07:53,043 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:07:53,068 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:07:53,068 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:07:53,069 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:07:53,070 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:07:53,070 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:07:53,071 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:07:53,071 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:07:53,072 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:07:53,073 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:07:53,073 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:07:53,074 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:07:53,074 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:07:53,075 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:07:53,075 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:07:53,076 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:07:53,076 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:07:53,081 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:07:53,081 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:07:53,081 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:07:53,082 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:07:53,082 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:07:53,082 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:07:53,083 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:07:53,083 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:07:53,084 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:07:53,084 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:07:53,084 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:07:53,085 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:07:53,085 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:07:53,085 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:07:53,085 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:07:53,085 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:07:53,086 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:07:53,086 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:07:53,086 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:07:53,086 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:07:53,087 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:07:53,087 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_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73587fb730a0fae8f0f61c4bce66b3ef3eca8012a1c96e30e457f1e4f757a73f [2023-11-29 06:07:53,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:07:53,356 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:07:53,359 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:07:53,360 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:07:53,361 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:07:53,362 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/loops-crafted-1/Mono1_1-1.c [2023-11-29 06:07:56,140 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:07:56,315 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:07:56,316 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/sv-benchmarks/c/loops-crafted-1/Mono1_1-1.c [2023-11-29 06:07:56,323 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/data/334a8244e/f3065742ffcd42778c7e793f6791e398/FLAG68ee98f04 [2023-11-29 06:07:56,357 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/data/334a8244e/f3065742ffcd42778c7e793f6791e398 [2023-11-29 06:07:56,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:07:56,361 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:07:56,362 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:07:56,363 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:07:56,368 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:07:56,369 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:07:56" (1/1) ... [2023-11-29 06:07:56,370 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@254f6d82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:56, skipping insertion in model container [2023-11-29 06:07:56,370 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:07:56" (1/1) ... [2023-11-29 06:07:56,403 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:07:56,548 WARN L240 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_4f1286b0-0721-4583-a26f-de639a81b3c1/sv-benchmarks/c/loops-crafted-1/Mono1_1-1.c[313,326] [2023-11-29 06:07:56,559 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:07:56,569 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:07:56,581 WARN L240 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_4f1286b0-0721-4583-a26f-de639a81b3c1/sv-benchmarks/c/loops-crafted-1/Mono1_1-1.c[313,326] [2023-11-29 06:07:56,583 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:07:56,597 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:07:56,597 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:56 WrapperNode [2023-11-29 06:07:56,597 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:07:56,598 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:07:56,599 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:07:56,599 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:07:56,606 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:56" (1/1) ... [2023-11-29 06:07:56,612 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:56" (1/1) ... [2023-11-29 06:07:56,628 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 25 [2023-11-29 06:07:56,629 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:07:56,629 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:07:56,630 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:07:56,630 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:07:56,641 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:56" (1/1) ... [2023-11-29 06:07:56,641 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:56" (1/1) ... [2023-11-29 06:07:56,642 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:56" (1/1) ... [2023-11-29 06:07:56,653 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]. [2023-11-29 06:07:56,654 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:56" (1/1) ... [2023-11-29 06:07:56,654 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:56" (1/1) ... [2023-11-29 06:07:56,656 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:56" (1/1) ... [2023-11-29 06:07:56,660 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:56" (1/1) ... [2023-11-29 06:07:56,661 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:56" (1/1) ... [2023-11-29 06:07:56,662 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:56" (1/1) ... [2023-11-29 06:07:56,663 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:07:56,664 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:07:56,665 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:07:56,665 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:07:56,666 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:56" (1/1) ... [2023-11-29 06:07:56,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:07:56,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:07:56,694 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:07:56,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:07:56,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:07:56,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:07:56,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:07:56,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:07:56,799 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:07:56,802 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:07:56,892 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:07:56,914 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:07:56,914 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 06:07:56,915 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:07:56 BoogieIcfgContainer [2023-11-29 06:07:56,915 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:07:56,918 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:07:56,918 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:07:56,922 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:07:56,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:07:56" (1/3) ... [2023-11-29 06:07:56,923 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f205ab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:07:56, skipping insertion in model container [2023-11-29 06:07:56,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:07:56" (2/3) ... [2023-11-29 06:07:56,924 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f205ab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:07:56, skipping insertion in model container [2023-11-29 06:07:56,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:07:56" (3/3) ... [2023-11-29 06:07:56,925 INFO L112 eAbstractionObserver]: Analyzing ICFG Mono1_1-1.c [2023-11-29 06:07:56,945 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:07:56,946 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 06:07:56,994 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:07:57,001 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@25ebb15c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:07:57,001 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 06:07:57,006 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 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) [2023-11-29 06:07:57,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-29 06:07:57,012 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:07:57,012 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 06:07:57,013 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:07:57,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:07:57,019 INFO L85 PathProgramCache]: Analyzing trace with hash 62462887, now seen corresponding path program 1 times [2023-11-29 06:07:57,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:07:57,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715545773] [2023-11-29 06:07:57,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:07:57,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:07:57,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:07:57,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:07:57,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:07:57,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715545773] [2023-11-29 06:07:57,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715545773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:07:57,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:07:57,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:07:57,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483718326] [2023-11-29 06:07:57,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:07:57,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 06:07:57,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:07:57,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 06:07:57,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 06:07:57,201 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 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 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-29 06:07:57,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:07:57,221 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2023-11-29 06:07:57,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 06:07:57,225 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2023-11-29 06:07:57,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:07:57,233 INFO L225 Difference]: With dead ends: 15 [2023-11-29 06:07:57,234 INFO L226 Difference]: Without dead ends: 7 [2023-11-29 06:07:57,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 06:07:57,241 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:07:57,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:07:57,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2023-11-29 06:07:57,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2023-11-29 06:07:57,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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) [2023-11-29 06:07:57,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2023-11-29 06:07:57,273 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 8 transitions. Word has length 5 [2023-11-29 06:07:57,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:07:57,273 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 8 transitions. [2023-11-29 06:07:57,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-29 06:07:57,274 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2023-11-29 06:07:57,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-29 06:07:57,274 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:07:57,274 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 06:07:57,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 06:07:57,275 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:07:57,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:07:57,276 INFO L85 PathProgramCache]: Analyzing trace with hash 62164977, now seen corresponding path program 1 times [2023-11-29 06:07:57,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:07:57,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32726995] [2023-11-29 06:07:57,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:07:57,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:07:57,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:07:57,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:07:57,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:07:57,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32726995] [2023-11-29 06:07:57,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32726995] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:07:57,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:07:57,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:07:57,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325475213] [2023-11-29 06:07:57,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:07:57,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:07:57,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:07:57,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:07:57,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:07:57,383 INFO L87 Difference]: Start difference. First operand 7 states and 8 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-29 06:07:57,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:07:57,403 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2023-11-29 06:07:57,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:07:57,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2023-11-29 06:07:57,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:07:57,405 INFO L225 Difference]: With dead ends: 15 [2023-11-29 06:07:57,405 INFO L226 Difference]: Without dead ends: 9 [2023-11-29 06:07:57,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:07:57,407 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 1 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:07:57,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 7 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:07:57,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-11-29 06:07:57,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2023-11-29 06:07:57,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 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) [2023-11-29 06:07:57,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2023-11-29 06:07:57,412 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 5 [2023-11-29 06:07:57,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:07:57,412 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2023-11-29 06:07:57,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-29 06:07:57,413 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2023-11-29 06:07:57,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 06:07:57,413 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:07:57,413 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:07:57,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 06:07:57,414 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:07:57,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:07:57,414 INFO L85 PathProgramCache]: Analyzing trace with hash -338656492, now seen corresponding path program 1 times [2023-11-29 06:07:57,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:07:57,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900141172] [2023-11-29 06:07:57,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:07:57,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:07:57,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:07:57,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:07:57,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:07:57,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900141172] [2023-11-29 06:07:57,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900141172] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:07:57,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967241950] [2023-11-29 06:07:57,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:07:57,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:07:57,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:07:57,536 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:07:57,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 06:07:57,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:07:57,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 06:07:57,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:07:57,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:07:57,618 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:07:57,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:07:57,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967241950] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:07:57,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:07:57,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-29 06:07:57,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707081293] [2023-11-29 06:07:57,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:07:57,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:07:57,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:07:57,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:07:57,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:07:57,655 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 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) [2023-11-29 06:07:57,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:07:57,775 INFO L93 Difference]: Finished difference Result 19 states and 25 transitions. [2023-11-29 06:07:57,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:07:57,776 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 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 7 [2023-11-29 06:07:57,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:07:57,776 INFO L225 Difference]: With dead ends: 19 [2023-11-29 06:07:57,777 INFO L226 Difference]: Without dead ends: 13 [2023-11-29 06:07:57,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:07:57,779 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:07:57,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 14 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:07:57,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-11-29 06:07:57,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2023-11-29 06:07:57,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 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) [2023-11-29 06:07:57,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2023-11-29 06:07:57,785 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 7 [2023-11-29 06:07:57,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:07:57,785 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2023-11-29 06:07:57,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 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) [2023-11-29 06:07:57,785 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2023-11-29 06:07:57,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-29 06:07:57,786 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:07:57,786 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 06:07:57,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 06:07:57,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:07:57,989 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:07:57,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:07:57,989 INFO L85 PathProgramCache]: Analyzing trace with hash 28316188, now seen corresponding path program 1 times [2023-11-29 06:07:57,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:07:57,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780303892] [2023-11-29 06:07:57,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:07:57,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:07:58,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:07:58,127 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:07:58,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:07:58,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780303892] [2023-11-29 06:07:58,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780303892] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:07:58,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596654264] [2023-11-29 06:07:58,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:07:58,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:07:58,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:07:58,133 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:07:58,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 06:07:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:07:58,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:07:58,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:07:58,196 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:07:58,196 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:07:58,302 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:07:58,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596654264] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:07:58,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:07:58,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 5] total 9 [2023-11-29 06:07:58,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649133180] [2023-11-29 06:07:58,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:07:58,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:07:58,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:07:58,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:07:58,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2023-11-29 06:07:58,306 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 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) [2023-11-29 06:07:58,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:07:58,531 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2023-11-29 06:07:58,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:07:58,532 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 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 11 [2023-11-29 06:07:58,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:07:58,532 INFO L225 Difference]: With dead ends: 27 [2023-11-29 06:07:58,532 INFO L226 Difference]: Without dead ends: 20 [2023-11-29 06:07:58,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=89, Unknown=0, NotChecked=0, Total=156 [2023-11-29 06:07:58,534 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 9 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:07:58,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 10 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:07:58,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-11-29 06:07:58,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-11-29 06:07:58,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 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) [2023-11-29 06:07:58,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2023-11-29 06:07:58,541 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 11 [2023-11-29 06:07:58,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:07:58,542 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2023-11-29 06:07:58,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 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) [2023-11-29 06:07:58,542 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2023-11-29 06:07:58,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 06:07:58,543 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:07:58,543 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1] [2023-11-29 06:07:58,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 06:07:58,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:07:58,753 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:07:58,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:07:58,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1927939800, now seen corresponding path program 2 times [2023-11-29 06:07:58,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:07:58,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804025546] [2023-11-29 06:07:58,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:07:58,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:07:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:07:58,938 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:07:58,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:07:58,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804025546] [2023-11-29 06:07:58,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804025546] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:07:58,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266010283] [2023-11-29 06:07:58,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:07:58,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:07:58,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:07:58,943 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:07:58,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 06:07:58,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:07:58,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:07:58,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 06:07:58,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:07:59,041 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:07:59,042 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:07:59,447 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:07:59,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266010283] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:07:59,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:07:59,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 11] total 20 [2023-11-29 06:07:59,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237863119] [2023-11-29 06:07:59,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:07:59,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 06:07:59,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:07:59,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 06:07:59,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2023-11-29 06:07:59,451 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 21 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 20 states have internal predecessors, (41), 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) [2023-11-29 06:08:00,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:08:00,549 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2023-11-29 06:08:00,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 06:08:00,549 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 20 states have internal predecessors, (41), 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 19 [2023-11-29 06:08:00,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:08:00,551 INFO L225 Difference]: With dead ends: 39 [2023-11-29 06:08:00,551 INFO L226 Difference]: Without dead ends: 30 [2023-11-29 06:08:00,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=194, Invalid=456, Unknown=0, NotChecked=0, Total=650 [2023-11-29 06:08:00,553 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 6 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:08:00,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 25 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 06:08:00,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-11-29 06:08:00,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-11-29 06:08:00,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.206896551724138) internal successors, (35), 29 states have internal predecessors, (35), 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) [2023-11-29 06:08:00,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2023-11-29 06:08:00,561 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 19 [2023-11-29 06:08:00,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:08:00,561 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2023-11-29 06:08:00,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 20 states have internal predecessors, (41), 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) [2023-11-29 06:08:00,562 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2023-11-29 06:08:00,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-29 06:08:00,563 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:08:00,563 INFO L195 NwaCegarLoop]: trace histogram [12, 7, 5, 1, 1, 1, 1, 1] [2023-11-29 06:08:00,573 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 06:08:00,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:08:00,773 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:08:00,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:08:00,773 INFO L85 PathProgramCache]: Analyzing trace with hash 2065334815, now seen corresponding path program 3 times [2023-11-29 06:08:00,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:08:00,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613046223] [2023-11-29 06:08:00,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:08:00,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:08:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:08:00,961 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 72 proven. 56 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 06:08:00,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:08:00,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613046223] [2023-11-29 06:08:00,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613046223] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:08:00,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606168122] [2023-11-29 06:08:00,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 06:08:00,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:08:00,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:08:00,965 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:08:00,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 06:08:01,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2023-11-29 06:08:01,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:08:01,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 06:08:01,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:08:01,276 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 77 proven. 25 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-29 06:08:01,277 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:08:01,939 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 77 proven. 25 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-29 06:08:01,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606168122] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:08:01,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:08:01,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 11] total 25 [2023-11-29 06:08:01,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810156045] [2023-11-29 06:08:01,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:08:01,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 06:08:01,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:08:01,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 06:08:01,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2023-11-29 06:08:01,942 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 25 states, 25 states have (on average 2.08) internal successors, (52), 25 states have internal predecessors, (52), 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) [2023-11-29 06:08:09,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:08:09,125 INFO L93 Difference]: Finished difference Result 65 states and 91 transitions. [2023-11-29 06:08:09,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-29 06:08:09,126 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.08) internal successors, (52), 25 states have internal predecessors, (52), 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 29 [2023-11-29 06:08:09,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:08:09,127 INFO L225 Difference]: With dead ends: 65 [2023-11-29 06:08:09,127 INFO L226 Difference]: Without dead ends: 48 [2023-11-29 06:08:09,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=564, Invalid=1158, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 06:08:09,129 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 31 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:08:09,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 13 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 06:08:09,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-11-29 06:08:09,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2023-11-29 06:08:09,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 45 states have internal predecessors, (53), 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) [2023-11-29 06:08:09,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2023-11-29 06:08:09,140 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 29 [2023-11-29 06:08:09,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:08:09,141 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2023-11-29 06:08:09,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.08) internal successors, (52), 25 states have internal predecessors, (52), 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) [2023-11-29 06:08:09,141 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2023-11-29 06:08:09,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 06:08:09,142 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:08:09,143 INFO L195 NwaCegarLoop]: trace histogram [20, 12, 8, 1, 1, 1, 1, 1] [2023-11-29 06:08:09,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 06:08:09,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:08:09,343 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:08:09,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:08:09,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1887937723, now seen corresponding path program 4 times [2023-11-29 06:08:09,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:08:09,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256734811] [2023-11-29 06:08:09,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:08:09,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:08:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:08:09,575 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 207 proven. 72 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-11-29 06:08:09,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:08:09,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256734811] [2023-11-29 06:08:09,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256734811] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:08:09,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92020525] [2023-11-29 06:08:09,576 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 06:08:09,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:08:09,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:08:09,577 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:08:09,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 06:08:09,628 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 06:08:09,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:08:09,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-29 06:08:09,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:08:09,870 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:08:09,871 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:08:10,650 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:08:10,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92020525] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:08:10,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:08:10,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 22, 22] total 44 [2023-11-29 06:08:10,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663358989] [2023-11-29 06:08:10,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:08:10,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-11-29 06:08:10,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:08:10,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-11-29 06:08:10,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=558, Invalid=1422, Unknown=0, NotChecked=0, Total=1980 [2023-11-29 06:08:10,654 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand has 45 states, 45 states have (on average 2.066666666666667) internal successors, (93), 44 states have internal predecessors, (93), 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) [2023-11-29 06:09:04,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:09:04,457 INFO L93 Difference]: Finished difference Result 87 states and 112 transitions. [2023-11-29 06:09:04,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 06:09:04,458 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.066666666666667) internal successors, (93), 44 states have internal predecessors, (93), 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 45 [2023-11-29 06:09:04,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:09:04,459 INFO L225 Difference]: With dead ends: 87 [2023-11-29 06:09:04,459 INFO L226 Difference]: Without dead ends: 58 [2023-11-29 06:09:04,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 53.5s TimeCoverageRelationStatistics Valid=1224, Invalid=2436, Unknown=0, NotChecked=0, Total=3660 [2023-11-29 06:09:04,461 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 17 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:09:04,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 46 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 06:09:04,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-11-29 06:09:04,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2023-11-29 06:09:04,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.2280701754385965) internal successors, (70), 57 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:09:04,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2023-11-29 06:09:04,470 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 45 [2023-11-29 06:09:04,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:09:04,470 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2023-11-29 06:09:04,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.066666666666667) internal successors, (93), 44 states have internal predecessors, (93), 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) [2023-11-29 06:09:04,470 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2023-11-29 06:09:04,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-29 06:09:04,471 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:09:04,472 INFO L195 NwaCegarLoop]: trace histogram [26, 17, 9, 1, 1, 1, 1, 1] [2023-11-29 06:09:04,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 06:09:04,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:09:04,673 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:09:04,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:09:04,673 INFO L85 PathProgramCache]: Analyzing trace with hash -576209695, now seen corresponding path program 5 times [2023-11-29 06:09:04,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:09:04,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071663] [2023-11-29 06:09:04,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:09:04,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:09:04,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:09:04,922 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 330 proven. 90 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2023-11-29 06:09:04,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:09:04,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071663] [2023-11-29 06:09:04,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071663] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:09:04,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248074085] [2023-11-29 06:09:04,923 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 06:09:04,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:09:04,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:09:04,924 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:09:04,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 06:09:07,132 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 27 check-sat command(s) [2023-11-29 06:09:07,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:09:07,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 06:09:07,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:09:07,184 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 341 proven. 110 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2023-11-29 06:09:07,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:09:07,616 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 341 proven. 110 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2023-11-29 06:09:07,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248074085] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:09:07,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:09:07,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 13] total 25 [2023-11-29 06:09:07,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748358904] [2023-11-29 06:09:07,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:09:07,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 06:09:07,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:09:07,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 06:09:07,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=446, Unknown=0, NotChecked=0, Total=650 [2023-11-29 06:09:07,619 INFO L87 Difference]: Start difference. First operand 58 states and 70 transitions. Second operand has 26 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 25 states have internal predecessors, (55), 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) [2023-11-29 06:09:40,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:09:40,062 INFO L93 Difference]: Finished difference Result 121 states and 157 transitions. [2023-11-29 06:09:40,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 06:09:40,063 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 25 states have internal predecessors, (55), 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 57 [2023-11-29 06:09:40,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:09:40,064 INFO L225 Difference]: With dead ends: 121 [2023-11-29 06:09:40,064 INFO L226 Difference]: Without dead ends: 82 [2023-11-29 06:09:40,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 32.6s TimeCoverageRelationStatistics Valid=490, Invalid=842, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 06:09:40,065 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 33 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:09:40,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 14 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:09:40,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-11-29 06:09:40,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2023-11-29 06:09:40,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.1604938271604939) internal successors, (94), 81 states have internal predecessors, (94), 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) [2023-11-29 06:09:40,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 94 transitions. [2023-11-29 06:09:40,078 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 94 transitions. Word has length 57 [2023-11-29 06:09:40,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:09:40,078 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 94 transitions. [2023-11-29 06:09:40,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 25 states have internal predecessors, (55), 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) [2023-11-29 06:09:40,078 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 94 transitions. [2023-11-29 06:09:40,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-29 06:09:40,080 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:09:40,080 INFO L195 NwaCegarLoop]: trace histogram [38, 21, 17, 1, 1, 1, 1, 1] [2023-11-29 06:09:40,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 06:09:40,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 06:09:40,281 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:09:40,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:09:40,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1422372613, now seen corresponding path program 6 times [2023-11-29 06:09:40,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:09:40,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447720924] [2023-11-29 06:09:40,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:09:40,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:09:40,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:09:40,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 726 proven. 462 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2023-11-29 06:09:40,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:09:40,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447720924] [2023-11-29 06:09:40,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447720924] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:09:40,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363827227] [2023-11-29 06:09:40,875 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 06:09:40,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:09:40,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:09:40,876 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:09:40,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f1286b0-0721-4583-a26f-de639a81b3c1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 06:09:43,287 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 38 check-sat command(s) [2023-11-29 06:09:43,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:09:43,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 54 conjunts are in the unsatisfiable core [2023-11-29 06:09:43,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:09:43,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 650 proven. 650 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-29 06:09:43,465 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:09:45,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 650 proven. 650 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-29 06:09:45,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363827227] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:09:45,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:09:45,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 27, 28] total 55 [2023-11-29 06:09:45,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297928491] [2023-11-29 06:09:45,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:09:45,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-11-29 06:09:45,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:09:45,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-11-29 06:09:45,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=2219, Unknown=0, NotChecked=0, Total=3080 [2023-11-29 06:09:45,751 INFO L87 Difference]: Start difference. First operand 82 states and 94 transitions. Second operand has 56 states, 56 states have (on average 2.0535714285714284) internal successors, (115), 55 states have internal predecessors, (115), 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) [2023-11-29 06:11:07,541 WARN L293 SmtUtils]: Spent 6.09s on a formula simplification. DAG size of input: 157 DAG size of output: 10 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:12:39,005 WARN L293 SmtUtils]: Spent 7.83s on a formula simplification. DAG size of input: 151 DAG size of output: 10 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:14:04,478 WARN L293 SmtUtils]: Spent 6.42s on a formula simplification. DAG size of input: 145 DAG size of output: 10 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:15:30,838 WARN L293 SmtUtils]: Spent 5.79s on a formula simplification. DAG size of input: 139 DAG size of output: 10 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:17:01,213 WARN L293 SmtUtils]: Spent 6.90s on a formula simplification. DAG size of input: 133 DAG size of output: 10 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:18:16,081 WARN L293 SmtUtils]: Spent 5.76s on a formula simplification. DAG size of input: 127 DAG size of output: 10 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)