./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/array-eq-symm.wvr.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_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/config/GemCutterReach.xml -i ../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S --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 GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6897befed0dbbae24492a1e82d50fcd0be6b3857b241d882a904d02a513d7a6d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:08:23,777 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:08:23,869 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/config/svcomp-Reach-32bit-GemCutter_Default.epf [2023-11-24 22:08:23,875 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 22:08:23,875 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 22:08:23,902 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:08:23,902 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 22:08:23,903 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 22:08:23,904 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 22:08:23,904 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 22:08:23,905 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:08:23,906 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:08:23,907 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 22:08:23,907 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:08:23,908 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 22:08:23,909 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 22:08:23,909 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 22:08:23,910 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 22:08:23,910 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:08:23,911 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 22:08:23,912 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:08:23,912 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 22:08:23,913 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 22:08:23,914 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 22:08:23,914 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:08:23,915 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:08:23,915 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 22:08:23,916 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 22:08:23,917 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 22:08:23,917 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 22:08:23,918 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:08:23,919 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:08:23,919 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 22:08:23,920 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 22:08:23,920 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2023-11-24 22:08:23,921 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 22:08:23,921 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 22:08:23,922 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-11-24 22:08:23,922 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 22:08:23,923 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-11-24 22:08:23,923 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-11-24 22:08:23,924 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6897befed0dbbae24492a1e82d50fcd0be6b3857b241d882a904d02a513d7a6d [2023-11-24 22:08:24,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:08:24,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:08:24,238 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:08:24,241 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:08:24,241 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:08:24,243 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2023-11-24 22:08:27,422 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:08:27,740 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:08:27,741 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2023-11-24 22:08:27,752 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/data/a86c9d9cd/d322158716cf4b3c84a9773f55f12f55/FLAG0fb4050d3 [2023-11-24 22:08:27,773 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/data/a86c9d9cd/d322158716cf4b3c84a9773f55f12f55 [2023-11-24 22:08:27,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:08:27,783 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:08:27,786 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:08:27,787 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:08:27,792 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:08:27,793 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:08:27" (1/1) ... [2023-11-24 22:08:27,795 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23e5a7e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:08:27, skipping insertion in model container [2023-11-24 22:08:27,795 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:08:27" (1/1) ... [2023-11-24 22:08:27,828 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:08:28,072 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_f18122e5-d8e2-425d-83cf-7473de214ebc/sv-benchmarks/c/weaver/array-eq-symm.wvr.c[2277,2290] [2023-11-24 22:08:28,094 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:08:28,105 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 22:08:28,143 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_f18122e5-d8e2-425d-83cf-7473de214ebc/sv-benchmarks/c/weaver/array-eq-symm.wvr.c[2277,2290] [2023-11-24 22:08:28,147 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:08:28,164 INFO L206 MainTranslator]: Completed translation [2023-11-24 22:08:28,165 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:08:28 WrapperNode [2023-11-24 22:08:28,165 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:08:28,167 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 22:08:28,167 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 22:08:28,167 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 22:08:28,176 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:08:28" (1/1) ... [2023-11-24 22:08:28,188 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:08:28" (1/1) ... [2023-11-24 22:08:28,219 INFO L138 Inliner]: procedures = 23, calls = 29, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 117 [2023-11-24 22:08:28,219 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 22:08:28,220 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 22:08:28,220 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 22:08:28,221 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 22:08:28,231 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:08:28" (1/1) ... [2023-11-24 22:08:28,232 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:08:28" (1/1) ... [2023-11-24 22:08:28,235 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:08:28" (1/1) ... [2023-11-24 22:08:28,235 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:08:28" (1/1) ... [2023-11-24 22:08:28,244 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:08:28" (1/1) ... [2023-11-24 22:08:28,248 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:08:28" (1/1) ... [2023-11-24 22:08:28,250 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:08:28" (1/1) ... [2023-11-24 22:08:28,252 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:08:28" (1/1) ... [2023-11-24 22:08:28,255 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 22:08:28,256 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 22:08:28,257 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 22:08:28,257 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 22:08:28,258 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:08:28" (1/1) ... [2023-11-24 22:08:28,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 22:08:28,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:08:28,303 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 22:08:28,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 22:08:28,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 22:08:28,344 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-24 22:08:28,344 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-24 22:08:28,344 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-24 22:08:28,344 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-24 22:08:28,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 22:08:28,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 22:08:28,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 22:08:28,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 22:08:28,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 22:08:28,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 22:08:28,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 22:08:28,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 22:08:28,350 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 22:08:28,517 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 22:08:28,520 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 22:08:28,902 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 22:08:29,223 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 22:08:29,223 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-24 22:08:29,224 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:08:29 BoogieIcfgContainer [2023-11-24 22:08:29,224 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 22:08:29,227 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 22:08:29,227 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 22:08:29,231 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 22:08:29,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 10:08:27" (1/3) ... [2023-11-24 22:08:29,232 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f6b67e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:08:29, skipping insertion in model container [2023-11-24 22:08:29,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:08:28" (2/3) ... [2023-11-24 22:08:29,233 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f6b67e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:08:29, skipping insertion in model container [2023-11-24 22:08:29,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:08:29" (3/3) ... [2023-11-24 22:08:29,235 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-symm.wvr.c [2023-11-24 22:08:29,244 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-24 22:08:29,253 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 22:08:29,253 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 22:08:29,254 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 22:08:29,369 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-24 22:08:29,427 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:08:29,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-24 22:08:29,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:08:29,434 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-24 22:08:29,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2023-11-24 22:08:29,474 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-24 22:08:29,487 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-24 22:08:29,495 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=PARTIAL_ORDER_FA, 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;@238293d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:08:29,495 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-24 22:08:29,623 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-24 22:08:29,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:08:29,629 INFO L85 PathProgramCache]: Analyzing trace with hash 95977635, now seen corresponding path program 1 times [2023-11-24 22:08:29,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:08:29,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505512457] [2023-11-24 22:08:29,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:29,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:08:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:08:30,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 22:08:30,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:08:30,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505512457] [2023-11-24 22:08:30,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505512457] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:08:30,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:08:30,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 22:08:30,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180601719] [2023-11-24 22:08:30,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:08:30,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 22:08:30,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:08:30,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 22:08:30,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 22:08:30,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:30,261 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:08:30,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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) [2023-11-24 22:08:30,262 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:30,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:08:30,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 22:08:30,416 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-24 22:08:30,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:08:30,417 INFO L85 PathProgramCache]: Analyzing trace with hash -745774248, now seen corresponding path program 1 times [2023-11-24 22:08:30,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:08:30,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366996620] [2023-11-24 22:08:30,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:30,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:08:30,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:08:30,655 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 22:08:30,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:08:30,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366996620] [2023-11-24 22:08:30,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366996620] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:08:30,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:08:30,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 22:08:30,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775927435] [2023-11-24 22:08:30,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:08:30,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 22:08:30,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:08:30,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 22:08:30,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 22:08:30,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:30,663 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:08:30,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 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) [2023-11-24 22:08:30,664 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:08:30,664 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:30,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:08:30,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 22:08:30,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 22:08:30,832 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-24 22:08:30,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:08:30,833 INFO L85 PathProgramCache]: Analyzing trace with hash 695981300, now seen corresponding path program 1 times [2023-11-24 22:08:30,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:08:30,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863421233] [2023-11-24 22:08:30,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:30,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:08:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:08:31,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 22:08:31,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:08:31,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863421233] [2023-11-24 22:08:31,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863421233] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 22:08:31,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683343629] [2023-11-24 22:08:31,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:31,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:08:31,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:08:31,090 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 22:08:31,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 22:08:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:08:31,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 22:08:31,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:08:31,458 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 22:08:31,459 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 22:08:31,585 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 22:08:31,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683343629] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 22:08:31,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 22:08:31,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2023-11-24 22:08:31,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943883439] [2023-11-24 22:08:31,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 22:08:31,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-24 22:08:31,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:08:31,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-24 22:08:31,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-11-24 22:08:31,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:31,593 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:08:31,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 14 states have internal predecessors, (56), 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) [2023-11-24 22:08:31,594 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:08:31,594 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-24 22:08:31,594 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:31,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:08:31,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 22:08:31,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-24 22:08:31,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 22:08:32,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:08:32,069 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-24 22:08:32,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:08:32,070 INFO L85 PathProgramCache]: Analyzing trace with hash -170542077, now seen corresponding path program 2 times [2023-11-24 22:08:32,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:08:32,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094207934] [2023-11-24 22:08:32,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:32,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:08:32,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:08:32,714 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-24 22:08:32,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:08:32,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094207934] [2023-11-24 22:08:32,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094207934] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:08:32,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:08:32,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 22:08:32,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122178174] [2023-11-24 22:08:32,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:08:32,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 22:08:32,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:08:32,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 22:08:32,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-24 22:08:32,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:32,718 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:08:32,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 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) [2023-11-24 22:08:32,718 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:08:32,718 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-24 22:08:32,718 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2023-11-24 22:08:32,718 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:32,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:08:32,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 22:08:32,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-24 22:08:32,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:08:32,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 22:08:32,977 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-24 22:08:32,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:08:32,977 INFO L85 PathProgramCache]: Analyzing trace with hash -458458881, now seen corresponding path program 1 times [2023-11-24 22:08:32,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:08:32,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488269149] [2023-11-24 22:08:32,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:32,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:08:33,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:08:33,155 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 22:08:33,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:08:33,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488269149] [2023-11-24 22:08:33,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488269149] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 22:08:33,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304906152] [2023-11-24 22:08:33,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:33,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:08:33,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:08:33,158 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 22:08:33,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 22:08:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:08:33,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 22:08:33,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:08:33,479 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 22:08:33,479 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 22:08:33,641 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 22:08:33,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304906152] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 22:08:33,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 22:08:33,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 20 [2023-11-24 22:08:33,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114987542] [2023-11-24 22:08:33,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 22:08:33,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-24 22:08:33,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:08:33,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-24 22:08:33,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2023-11-24 22:08:33,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:33,646 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:08:33,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.380952380952381) internal successors, (71), 20 states have internal predecessors, (71), 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) [2023-11-24 22:08:33,647 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:08:33,647 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-24 22:08:33,647 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2023-11-24 22:08:33,648 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:08:33,648 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:33,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:08:33,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 22:08:33,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-24 22:08:33,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:08:33,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-24 22:08:33,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 22:08:34,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:08:34,163 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-24 22:08:34,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:08:34,164 INFO L85 PathProgramCache]: Analyzing trace with hash 62678160, now seen corresponding path program 2 times [2023-11-24 22:08:34,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:08:34,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718905982] [2023-11-24 22:08:34,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:34,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:08:34,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:08:35,195 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-24 22:08:35,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:08:35,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718905982] [2023-11-24 22:08:35,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718905982] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 22:08:35,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178792863] [2023-11-24 22:08:35,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 22:08:35,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:08:35,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:08:35,202 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 22:08:35,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 22:08:35,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-24 22:08:35,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 22:08:35,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-24 22:08:35,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:08:35,644 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-24 22:08:35,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 10 [2023-11-24 22:08:35,667 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-24 22:08:35,667 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 22:08:35,802 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-11-24 22:08:35,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2023-11-24 22:08:35,912 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-24 22:08:35,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178792863] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 22:08:35,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 22:08:35,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 6] total 20 [2023-11-24 22:08:35,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669259480] [2023-11-24 22:08:35,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 22:08:35,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-24 22:08:35,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:08:35,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-24 22:08:35,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2023-11-24 22:08:35,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:35,918 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:08:35,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 20 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:08:35,918 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:08:35,919 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-24 22:08:35,919 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2023-11-24 22:08:35,919 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:08:35,919 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2023-11-24 22:08:35,919 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:36,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:08:36,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 22:08:36,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-24 22:08:36,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:08:36,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-24 22:08:36,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-24 22:08:36,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 22:08:36,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:08:36,699 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-24 22:08:36,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:08:36,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1111934697, now seen corresponding path program 1 times [2023-11-24 22:08:36,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:08:36,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841623026] [2023-11-24 22:08:36,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:36,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:08:36,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:08:37,022 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-24 22:08:37,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:08:37,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841623026] [2023-11-24 22:08:37,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841623026] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 22:08:37,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492906888] [2023-11-24 22:08:37,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:37,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:08:37,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:08:37,030 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 22:08:37,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 22:08:37,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:08:37,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-24 22:08:37,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:08:37,430 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-24 22:08:37,430 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 22:08:37,661 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-24 22:08:37,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492906888] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 22:08:37,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 22:08:37,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2023-11-24 22:08:37,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728399487] [2023-11-24 22:08:37,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 22:08:37,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-24 22:08:37,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:08:37,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-24 22:08:37,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2023-11-24 22:08:37,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:37,664 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:08:37,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.107142857142857) internal successors, (87), 27 states have internal predecessors, (87), 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) [2023-11-24 22:08:37,665 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:08:37,665 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-24 22:08:37,665 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2023-11-24 22:08:37,665 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:08:37,665 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2023-11-24 22:08:37,665 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2023-11-24 22:08:37,665 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:38,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:08:38,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 22:08:38,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-24 22:08:38,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:08:38,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-24 22:08:38,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-24 22:08:38,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-24 22:08:38,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 22:08:38,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:08:38,278 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-24 22:08:38,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:08:38,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1304152744, now seen corresponding path program 2 times [2023-11-24 22:08:38,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:08:38,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746900979] [2023-11-24 22:08:38,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:38,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:08:38,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:08:38,636 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-24 22:08:38,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:08:38,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746900979] [2023-11-24 22:08:38,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746900979] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 22:08:38,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861705829] [2023-11-24 22:08:38,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 22:08:38,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:08:38,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:08:38,639 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 22:08:38,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-24 22:08:38,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-24 22:08:38,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 22:08:38,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-24 22:08:38,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:08:39,172 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-24 22:08:39,173 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 22:08:39,480 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-24 22:08:39,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861705829] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 22:08:39,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 22:08:39,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 32 [2023-11-24 22:08:39,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645648476] [2023-11-24 22:08:39,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 22:08:39,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-24 22:08:39,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:08:39,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-24 22:08:39,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=843, Unknown=0, NotChecked=0, Total=1056 [2023-11-24 22:08:39,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:39,484 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:08:39,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.787878787878788) internal successors, (92), 32 states have internal predecessors, (92), 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) [2023-11-24 22:08:39,485 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:08:39,485 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-24 22:08:39,485 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2023-11-24 22:08:39,485 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:08:39,486 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2023-11-24 22:08:39,486 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2023-11-24 22:08:39,486 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2023-11-24 22:08:39,486 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:40,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:08:40,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 22:08:40,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-24 22:08:40,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:08:40,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-24 22:08:40,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-24 22:08:40,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-24 22:08:40,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-24 22:08:40,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-24 22:08:40,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:08:40,247 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-24 22:08:40,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:08:40,247 INFO L85 PathProgramCache]: Analyzing trace with hash -352841225, now seen corresponding path program 3 times [2023-11-24 22:08:40,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:08:40,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221408946] [2023-11-24 22:08:40,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:40,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:08:40,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:08:40,859 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 24 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 22:08:40,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:08:40,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221408946] [2023-11-24 22:08:40,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221408946] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 22:08:40,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841303918] [2023-11-24 22:08:40,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 22:08:40,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:08:40,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:08:40,863 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 22:08:40,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-24 22:08:41,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-24 22:08:41,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 22:08:41,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-24 22:08:41,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:08:42,062 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 33 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-24 22:08:42,062 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 22:08:42,256 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-24 22:08:42,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841303918] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 22:08:42,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 22:08:42,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 5] total 32 [2023-11-24 22:08:42,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171570503] [2023-11-24 22:08:42,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 22:08:42,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-24 22:08:42,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:08:42,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-24 22:08:42,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=932, Unknown=0, NotChecked=0, Total=1056 [2023-11-24 22:08:42,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:42,260 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:08:42,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.727272727272727) internal successors, (90), 32 states have internal predecessors, (90), 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) [2023-11-24 22:08:42,260 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:08:42,260 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-24 22:08:42,260 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2023-11-24 22:08:42,260 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:08:42,261 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2023-11-24 22:08:42,261 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2023-11-24 22:08:42,261 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2023-11-24 22:08:42,261 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2023-11-24 22:08:42,261 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:43,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:08:43,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 22:08:43,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-24 22:08:43,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:08:43,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-24 22:08:43,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-24 22:08:43,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-24 22:08:43,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-24 22:08:43,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-24 22:08:43,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-24 22:08:44,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-24 22:08:44,133 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-24 22:08:44,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:08:44,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1844992148, now seen corresponding path program 3 times [2023-11-24 22:08:44,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:08:44,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178905253] [2023-11-24 22:08:44,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:44,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:08:44,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:08:44,597 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 33 proven. 32 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-24 22:08:44,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:08:44,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178905253] [2023-11-24 22:08:44,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178905253] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 22:08:44,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25170975] [2023-11-24 22:08:44,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 22:08:44,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:08:44,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:08:44,599 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 22:08:44,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-24 22:08:45,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-24 22:08:45,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 22:08:45,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-24 22:08:45,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:08:45,801 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-24 22:08:45,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 22:08:46,179 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-24 22:08:46,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25170975] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 22:08:46,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 22:08:46,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 38 [2023-11-24 22:08:46,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837957245] [2023-11-24 22:08:46,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 22:08:46,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-24 22:08:46,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:08:46,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-24 22:08:46,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=1201, Unknown=0, NotChecked=0, Total=1482 [2023-11-24 22:08:46,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:46,183 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:08:46,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.128205128205128) internal successors, (122), 38 states have internal predecessors, (122), 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) [2023-11-24 22:08:46,184 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:08:46,184 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-24 22:08:46,184 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2023-11-24 22:08:46,184 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:08:46,184 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2023-11-24 22:08:46,184 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2023-11-24 22:08:46,184 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2023-11-24 22:08:46,184 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2023-11-24 22:08:46,184 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2023-11-24 22:08:46,184 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:46,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:08:46,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 22:08:46,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-24 22:08:46,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:08:46,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-24 22:08:46,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-24 22:08:46,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-24 22:08:46,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-24 22:08:46,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-24 22:08:46,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-24 22:08:46,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-24 22:08:47,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-24 22:08:47,014 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-24 22:08:47,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:08:47,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1647190267, now seen corresponding path program 4 times [2023-11-24 22:08:47,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:08:47,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754936303] [2023-11-24 22:08:47,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:47,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:08:47,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:08:48,408 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 13 proven. 42 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-24 22:08:48,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:08:48,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754936303] [2023-11-24 22:08:48,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754936303] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 22:08:48,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330593698] [2023-11-24 22:08:48,409 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-24 22:08:48,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:08:48,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:08:48,410 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 22:08:48,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-24 22:08:48,620 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-24 22:08:48,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 22:08:48,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-24 22:08:48,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:08:49,200 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2023-11-24 22:08:49,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 20 [2023-11-24 22:08:49,228 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-24 22:08:49,228 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 22:08:49,369 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2023-11-24 22:08:49,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2023-11-24 22:08:49,498 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-24 22:08:49,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330593698] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 22:08:49,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 22:08:49,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 6] total 32 [2023-11-24 22:08:49,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477474923] [2023-11-24 22:08:49,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 22:08:49,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-24 22:08:49,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:08:49,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-24 22:08:49,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=940, Unknown=0, NotChecked=0, Total=1056 [2023-11-24 22:08:49,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:49,501 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:08:49,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.787878787878788) internal successors, (92), 32 states have internal predecessors, (92), 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) [2023-11-24 22:08:49,501 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:08:49,502 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-24 22:08:49,502 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2023-11-24 22:08:49,502 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:08:49,502 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2023-11-24 22:08:49,502 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2023-11-24 22:08:49,502 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2023-11-24 22:08:49,502 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2023-11-24 22:08:49,502 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2023-11-24 22:08:49,502 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2023-11-24 22:08:49,502 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:51,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:08:51,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 22:08:51,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-24 22:08:51,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:08:51,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-24 22:08:51,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-24 22:08:51,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-24 22:08:51,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-24 22:08:51,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-24 22:08:51,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-24 22:08:51,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-24 22:08:51,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-24 22:08:51,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-24 22:08:51,616 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-24 22:08:51,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:08:51,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1443408900, now seen corresponding path program 1 times [2023-11-24 22:08:51,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:08:51,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114344841] [2023-11-24 22:08:51,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:51,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:08:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:08:52,103 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 47 proven. 41 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-24 22:08:52,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:08:52,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114344841] [2023-11-24 22:08:52,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114344841] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 22:08:52,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291064901] [2023-11-24 22:08:52,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:52,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:08:52,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:08:52,106 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 22:08:52,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-24 22:08:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:08:52,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-24 22:08:52,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:08:52,753 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 67 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-24 22:08:52,753 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 22:08:53,226 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 67 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-24 22:08:53,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291064901] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 22:08:53,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 22:08:53,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 44 [2023-11-24 22:08:53,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035310779] [2023-11-24 22:08:53,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 22:08:53,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-11-24 22:08:53,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:08:53,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-11-24 22:08:53,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=369, Invalid=1611, Unknown=0, NotChecked=0, Total=1980 [2023-11-24 22:08:53,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:53,231 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:08:53,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.977777777777778) internal successors, (134), 44 states have internal predecessors, (134), 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) [2023-11-24 22:08:53,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:08:53,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-24 22:08:53,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2023-11-24 22:08:53,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:08:53,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2023-11-24 22:08:53,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2023-11-24 22:08:53,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2023-11-24 22:08:53,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2023-11-24 22:08:53,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2023-11-24 22:08:53,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2023-11-24 22:08:53,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 32 states. [2023-11-24 22:08:53,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:53,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:08:53,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 22:08:53,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-24 22:08:53,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:08:53,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-24 22:08:53,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-24 22:08:53,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-24 22:08:53,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-24 22:08:53,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-24 22:08:53,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-24 22:08:53,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-24 22:08:53,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-24 22:08:53,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-24 22:08:54,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-24 22:08:54,127 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-24 22:08:54,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:08:54,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1937392843, now seen corresponding path program 2 times [2023-11-24 22:08:54,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:08:54,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147544622] [2023-11-24 22:08:54,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:54,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:08:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:08:55,130 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 50 proven. 71 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 22:08:55,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:08:55,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147544622] [2023-11-24 22:08:55,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147544622] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 22:08:55,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515619127] [2023-11-24 22:08:55,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 22:08:55,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:08:55,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:08:55,135 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 22:08:55,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-24 22:08:55,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-24 22:08:55,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 22:08:55,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-24 22:08:55,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:08:55,907 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 10 proven. 57 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-24 22:08:55,907 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 22:08:56,309 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-11-24 22:08:56,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515619127] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 22:08:56,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 22:08:56,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 14, 6] total 41 [2023-11-24 22:08:56,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007943440] [2023-11-24 22:08:56,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 22:08:56,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-24 22:08:56,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:08:56,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-24 22:08:56,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1540, Unknown=0, NotChecked=0, Total=1722 [2023-11-24 22:08:56,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:56,313 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:08:56,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.8095238095238093) internal successors, (118), 41 states have internal predecessors, (118), 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) [2023-11-24 22:08:56,314 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:08:56,314 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-24 22:08:56,314 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2023-11-24 22:08:56,314 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:08:56,314 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2023-11-24 22:08:56,314 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2023-11-24 22:08:56,314 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2023-11-24 22:08:56,315 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2023-11-24 22:08:56,315 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2023-11-24 22:08:56,315 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2023-11-24 22:08:56,315 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 32 states. [2023-11-24 22:08:56,315 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2023-11-24 22:08:56,315 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:08:58,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:08:58,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 22:08:58,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-24 22:08:58,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:08:58,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-24 22:08:58,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-24 22:08:58,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-24 22:08:58,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-24 22:08:58,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-24 22:08:58,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-24 22:08:58,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-24 22:08:58,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-24 22:08:58,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-11-24 22:08:58,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-24 22:08:59,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-24 22:08:59,043 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-24 22:08:59,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:08:59,043 INFO L85 PathProgramCache]: Analyzing trace with hash 92295246, now seen corresponding path program 1 times [2023-11-24 22:08:59,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:08:59,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482445571] [2023-11-24 22:08:59,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:59,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:08:59,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:08:59,557 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 100 proven. 28 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-24 22:08:59,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:08:59,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482445571] [2023-11-24 22:08:59,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482445571] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 22:08:59,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212955896] [2023-11-24 22:08:59,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:08:59,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:08:59,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:08:59,560 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 22:08:59,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-24 22:08:59,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:08:59,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-24 22:08:59,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:09:00,338 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 100 proven. 28 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-24 22:09:00,339 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 22:09:00,901 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 100 proven. 28 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-24 22:09:00,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212955896] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 22:09:00,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 22:09:00,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 50 [2023-11-24 22:09:00,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186014050] [2023-11-24 22:09:00,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 22:09:00,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-11-24 22:09:00,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:09:00,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-11-24 22:09:00,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=2067, Unknown=0, NotChecked=0, Total=2550 [2023-11-24 22:09:00,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:00,906 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:09:00,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.823529411764706) internal successors, (144), 50 states have internal predecessors, (144), 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) [2023-11-24 22:09:00,907 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:09:00,907 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-24 22:09:00,907 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2023-11-24 22:09:00,907 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:09:00,907 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2023-11-24 22:09:00,908 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2023-11-24 22:09:00,908 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2023-11-24 22:09:00,908 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2023-11-24 22:09:00,908 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2023-11-24 22:09:00,908 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2023-11-24 22:09:00,908 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 32 states. [2023-11-24 22:09:00,908 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2023-11-24 22:09:00,908 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 53 states. [2023-11-24 22:09:00,909 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:01,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:09:01,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 22:09:01,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-24 22:09:01,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:09:01,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-24 22:09:01,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-24 22:09:01,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-24 22:09:01,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-24 22:09:01,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-24 22:09:01,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-24 22:09:01,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-24 22:09:01,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-24 22:09:01,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-11-24 22:09:01,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-24 22:09:01,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-24 22:09:01,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-24 22:09:01,948 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-24 22:09:01,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:01,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1122223331, now seen corresponding path program 2 times [2023-11-24 22:09:01,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:01,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428502259] [2023-11-24 22:09:01,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:01,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:09:02,887 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 63 proven. 108 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 22:09:02,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:09:02,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428502259] [2023-11-24 22:09:02,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428502259] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 22:09:02,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097160246] [2023-11-24 22:09:02,888 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 22:09:02,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:09:02,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:09:02,889 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 22:09:02,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-24 22:09:03,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-24 22:09:03,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 22:09:03,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-24 22:09:03,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:09:04,295 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 77 proven. 94 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 22:09:04,295 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 22:09:05,247 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 93 proven. 78 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 22:09:05,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097160246] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 22:09:05,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 22:09:05,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 67 [2023-11-24 22:09:05,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213488643] [2023-11-24 22:09:05,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 22:09:05,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-11-24 22:09:05,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:09:05,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-11-24 22:09:05,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=808, Invalid=3748, Unknown=0, NotChecked=0, Total=4556 [2023-11-24 22:09:05,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:05,252 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:09:05,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.1176470588235294) internal successors, (144), 67 states have internal predecessors, (144), 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) [2023-11-24 22:09:05,253 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:09:05,253 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-24 22:09:05,253 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2023-11-24 22:09:05,253 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:09:05,253 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2023-11-24 22:09:05,253 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2023-11-24 22:09:05,253 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2023-11-24 22:09:05,253 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2023-11-24 22:09:05,253 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2023-11-24 22:09:05,253 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2023-11-24 22:09:05,254 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 32 states. [2023-11-24 22:09:05,254 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2023-11-24 22:09:05,254 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 53 states. [2023-11-24 22:09:05,254 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2023-11-24 22:09:05,254 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:06,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:09:06,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 22:09:06,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-24 22:09:06,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:09:06,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-24 22:09:06,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-24 22:09:06,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-24 22:09:06,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-24 22:09:06,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-24 22:09:06,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-24 22:09:06,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-24 22:09:06,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-24 22:09:06,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-11-24 22:09:06,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-24 22:09:06,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-24 22:09:06,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-24 22:09:06,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-24 22:09:06,719 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-24 22:09:06,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:06,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1402974443, now seen corresponding path program 3 times [2023-11-24 22:09:06,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:06,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465407465] [2023-11-24 22:09:06,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:06,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:06,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:09:07,418 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 164 proven. 36 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-24 22:09:07,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:09:07,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465407465] [2023-11-24 22:09:07,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465407465] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 22:09:07,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900053187] [2023-11-24 22:09:07,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 22:09:07,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:09:07,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 [2023-11-24 22:09:07,420 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 22:09:07,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-24 22:09:08,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-24 22:09:08,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 22:09:08,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-24 22:09:08,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:09:09,316 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 87 proven. 44 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-24 22:09:09,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 22:09:10,417 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 45 proven. 86 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-24 22:09:10,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900053187] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 22:09:10,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 22:09:10,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 26, 26] total 69 [2023-11-24 22:09:10,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425238057] [2023-11-24 22:09:10,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 22:09:10,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2023-11-24 22:09:10,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:09:10,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2023-11-24 22:09:10,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=679, Invalid=4151, Unknown=0, NotChecked=0, Total=4830 [2023-11-24 22:09:10,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:10,429 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-24 22:09:10,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 2.1285714285714286) internal successors, (149), 69 states have internal predecessors, (149), 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) [2023-11-24 22:09:10,430 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:09:10,431 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2023-11-24 22:09:10,431 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2023-11-24 22:09:10,431 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:09:10,431 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2023-11-24 22:09:10,431 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2023-11-24 22:09:10,431 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2023-11-24 22:09:10,431 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2023-11-24 22:09:10,431 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 36 states. [2023-11-24 22:09:10,432 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2023-11-24 22:09:10,432 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 32 states. [2023-11-24 22:09:10,432 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2023-11-24 22:09:10,432 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 53 states. [2023-11-24 22:09:10,432 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 35 states. [2023-11-24 22:09:10,432 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 37 states. [2023-11-24 22:09:10,432 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:09:11,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:09:11,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 22:09:11,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-24 22:09:11,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:09:11,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-24 22:09:11,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-24 22:09:11,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-24 22:09:11,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-24 22:09:11,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-24 22:09:11,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-24 22:09:11,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-24 22:09:11,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-24 22:09:11,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-11-24 22:09:11,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-24 22:09:11,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-24 22:09:11,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-24 22:09:11,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-24 22:09:12,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18122e5-d8e2-425d-83cf-7473de214ebc/bin/ugemcutter-verify-oI9GxRtH0S/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-24 22:09:12,023 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-24 22:09:12,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:09:12,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1625514394, now seen corresponding path program 4 times [2023-11-24 22:09:12,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:09:12,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748592727] [2023-11-24 22:09:12,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:09:12,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:09:12,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat