./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe55c97-036a-4edb-a1f5-534bd2e2c6d4/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe55c97-036a-4edb-a1f5-534bd2e2c6d4/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe55c97-036a-4edb-a1f5-534bd2e2c6d4/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe55c97-036a-4edb-a1f5-534bd2e2c6d4/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe55c97-036a-4edb-a1f5-534bd2e2c6d4/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe55c97-036a-4edb-a1f5-534bd2e2c6d4/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e7f1528a4c77969c5bff279724a3ed43475460be047e2e4b141f1353c3ea9cfe --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:06:36,199 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:06:36,315 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe55c97-036a-4edb-a1f5-534bd2e2c6d4/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:06:36,325 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:06:36,326 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:06:36,353 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:06:36,354 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:06:36,355 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:06:36,356 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:06:36,356 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:06:36,357 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:06:36,358 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:06:36,359 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:06:36,360 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:06:36,360 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:06:36,361 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:06:36,362 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:06:36,362 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:06:36,363 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:06:36,364 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:06:36,364 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:06:36,365 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:06:36,366 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:06:36,366 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:06:36,367 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:06:36,367 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:06:36,368 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:06:36,369 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:06:36,369 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:06:36,370 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:06:36,370 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:06:36,371 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:06:36,371 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:06:36,371 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:06:36,372 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:06:36,372 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:06:36,372 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:06:36,372 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:06:36,373 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:06:36,373 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe55c97-036a-4edb-a1f5-534bd2e2c6d4/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe55c97-036a-4edb-a1f5-534bd2e2c6d4/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7f1528a4c77969c5bff279724a3ed43475460be047e2e4b141f1353c3ea9cfe [2023-11-12 02:06:36,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:06:36,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:06:36,688 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:06:36,690 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:06:36,691 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:06:36,692 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe55c97-036a-4edb-a1f5-534bd2e2c6d4/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2023-11-12 02:06:39,810 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:06:40,064 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:06:40,064 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe55c97-036a-4edb-a1f5-534bd2e2c6d4/sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2023-11-12 02:06:40,072 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe55c97-036a-4edb-a1f5-534bd2e2c6d4/bin/uautomizer-verify-uTZkv6EMXl/data/a5f33225f/62c0c1fc2b4844fcb3032083d1ef6991/FLAG8cec8e044 [2023-11-12 02:06:40,087 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe55c97-036a-4edb-a1f5-534bd2e2c6d4/bin/uautomizer-verify-uTZkv6EMXl/data/a5f33225f/62c0c1fc2b4844fcb3032083d1ef6991 [2023-11-12 02:06:40,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:06:40,092 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:06:40,093 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:06:40,093 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:06:40,099 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:06:40,100 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:06:40" (1/1) ... [2023-11-12 02:06:40,101 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28a483bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:40, skipping insertion in model container [2023-11-12 02:06:40,101 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:06:40" (1/1) ... [2023-11-12 02:06:40,128 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:06:40,356 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_efe55c97-036a-4edb-a1f5-534bd2e2c6d4/sv-benchmarks/c/weaver/array-eq-trans.wvr.c[2776,2789] [2023-11-12 02:06:40,367 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:06:40,380 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:06:40,407 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_efe55c97-036a-4edb-a1f5-534bd2e2c6d4/sv-benchmarks/c/weaver/array-eq-trans.wvr.c[2776,2789] [2023-11-12 02:06:40,412 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:06:40,429 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:06:40,430 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:40 WrapperNode [2023-11-12 02:06:40,430 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:06:40,431 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:06:40,432 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:06:40,432 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:06:40,440 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:40" (1/1) ... [2023-11-12 02:06:40,450 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:40" (1/1) ... [2023-11-12 02:06:40,486 INFO L138 Inliner]: procedures = 24, calls = 46, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 212 [2023-11-12 02:06:40,486 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:06:40,487 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:06:40,487 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:06:40,487 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:06:40,498 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:40" (1/1) ... [2023-11-12 02:06:40,498 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:40" (1/1) ... [2023-11-12 02:06:40,503 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:40" (1/1) ... [2023-11-12 02:06:40,504 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:40" (1/1) ... [2023-11-12 02:06:40,521 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:40" (1/1) ... [2023-11-12 02:06:40,527 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:40" (1/1) ... [2023-11-12 02:06:40,530 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:40" (1/1) ... [2023-11-12 02:06:40,533 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:40" (1/1) ... [2023-11-12 02:06:40,542 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:06:40,543 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:06:40,544 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:06:40,549 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:06:40,550 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:40" (1/1) ... [2023-11-12 02:06:40,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:06:40,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe55c97-036a-4edb-a1f5-534bd2e2c6d4/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:06:40,582 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe55c97-036a-4edb-a1f5-534bd2e2c6d4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:06:40,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe55c97-036a-4edb-a1f5-534bd2e2c6d4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:06:40,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:06:40,618 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 02:06:40,618 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 02:06:40,618 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 02:06:40,618 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 02:06:40,618 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-12 02:06:40,618 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-12 02:06:40,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:06:40,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:06:40,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:06:40,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:06:40,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:06:40,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:06:40,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:06:40,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:06:40,622 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:06:40,757 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:06:40,759 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:06:41,355 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:06:41,368 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:06:41,369 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-12 02:06:41,371 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:06:41 BoogieIcfgContainer [2023-11-12 02:06:41,372 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:06:41,375 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:06:41,375 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:06:41,379 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:06:41,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:06:40" (1/3) ... [2023-11-12 02:06:41,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e7114b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:06:41, skipping insertion in model container [2023-11-12 02:06:41,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:40" (2/3) ... [2023-11-12 02:06:41,381 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e7114b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:06:41, skipping insertion in model container [2023-11-12 02:06:41,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:06:41" (3/3) ... [2023-11-12 02:06:41,382 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-trans.wvr.c [2023-11-12 02:06:41,392 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:06:41,404 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:06:41,405 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:06:41,405 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:06:41,503 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-12 02:06:41,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 294 places, 314 transitions, 649 flow [2023-11-12 02:06:41,684 INFO L124 PetriNetUnfolderBase]: 30/311 cut-off events. [2023-11-12 02:06:41,685 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 02:06:41,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 311 events. 30/311 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 258 event pairs, 0 based on Foata normal form. 0/280 useless extension candidates. Maximal degree in co-relation 208. Up to 3 conditions per place. [2023-11-12 02:06:41,701 INFO L82 GeneralOperation]: Start removeDead. Operand has 294 places, 314 transitions, 649 flow [2023-11-12 02:06:41,710 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 280 places, 300 transitions, 618 flow [2023-11-12 02:06:41,716 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:06:41,738 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 280 places, 300 transitions, 618 flow [2023-11-12 02:06:41,743 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 280 places, 300 transitions, 618 flow [2023-11-12 02:06:41,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 280 places, 300 transitions, 618 flow [2023-11-12 02:06:41,877 INFO L124 PetriNetUnfolderBase]: 30/300 cut-off events. [2023-11-12 02:06:41,877 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 02:06:41,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313 conditions, 300 events. 30/300 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 256 event pairs, 0 based on Foata normal form. 0/270 useless extension candidates. Maximal degree in co-relation 208. Up to 3 conditions per place. [2023-11-12 02:06:41,885 INFO L119 LiptonReduction]: Number of co-enabled transitions 2958 [2023-11-12 02:06:56,492 INFO L134 LiptonReduction]: Checked pairs total: 4268 [2023-11-12 02:06:56,493 INFO L136 LiptonReduction]: Total number of compositions: 353 [2023-11-12 02:06:56,508 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:06:56,515 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5a263f5e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:06:56,515 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-12 02:06:56,523 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:06:56,524 INFO L124 PetriNetUnfolderBase]: 8/31 cut-off events. [2023-11-12 02:06:56,524 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 02:06:56,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:06:56,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:56,526 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-12 02:06:56,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:56,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1355523418, now seen corresponding path program 1 times [2023-11-12 02:06:56,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:56,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9615641] [2023-11-12 02:06:56,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:56,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:56,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:57,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:57,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:57,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9615641] [2023-11-12 02:06:57,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9615641] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:57,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:57,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:06:57,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34159064] [2023-11-12 02:06:57,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:57,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:06:57,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:57,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:06:57,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:06:58,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 667 [2023-11-12 02:06:58,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 82 flow. Second operand has 6 states, 6 states have (on average 266.1666666666667) internal successors, (1597), 6 states have internal predecessors, (1597), 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) [2023-11-12 02:06:58,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:06:58,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 667 [2023-11-12 02:06:58,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:06:58,768 INFO L124 PetriNetUnfolderBase]: 883/1230 cut-off events. [2023-11-12 02:06:58,769 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2023-11-12 02:06:58,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2565 conditions, 1230 events. 883/1230 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4802 event pairs, 208 based on Foata normal form. 1/768 useless extension candidates. Maximal degree in co-relation 1719. Up to 690 conditions per place. [2023-11-12 02:06:58,783 INFO L140 encePairwiseOnDemand]: 657/667 looper letters, 46 selfloop transitions, 7 changer transitions 18/74 dead transitions. [2023-11-12 02:06:58,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 74 transitions, 341 flow [2023-11-12 02:06:58,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:06:58,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:06:58,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1652 transitions. [2023-11-12 02:06:58,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4127936031984008 [2023-11-12 02:06:58,815 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1652 transitions. [2023-11-12 02:06:58,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1652 transitions. [2023-11-12 02:06:58,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:06:58,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1652 transitions. [2023-11-12 02:06:58,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 275.3333333333333) internal successors, (1652), 6 states have internal predecessors, (1652), 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) [2023-11-12 02:06:58,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 667.0) internal successors, (4669), 7 states have internal predecessors, (4669), 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) [2023-11-12 02:06:58,853 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 667.0) internal successors, (4669), 7 states have internal predecessors, (4669), 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) [2023-11-12 02:06:58,855 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 82 flow. Second operand 6 states and 1652 transitions. [2023-11-12 02:06:58,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 74 transitions, 341 flow [2023-11-12 02:06:58,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 74 transitions, 307 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-12 02:06:58,867 INFO L231 Difference]: Finished difference. Result has 37 places, 37 transitions, 123 flow [2023-11-12 02:06:58,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=667, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=123, PETRI_PLACES=37, PETRI_TRANSITIONS=37} [2023-11-12 02:06:58,874 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2023-11-12 02:06:58,874 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 37 transitions, 123 flow [2023-11-12 02:06:58,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 266.1666666666667) internal successors, (1597), 6 states have internal predecessors, (1597), 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) [2023-11-12 02:06:58,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:06:58,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:58,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:06:58,877 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-12 02:06:58,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:58,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1605041139, now seen corresponding path program 1 times [2023-11-12 02:06:58,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:58,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861005880] [2023-11-12 02:06:58,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:58,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:59,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:59,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:59,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861005880] [2023-11-12 02:06:59,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861005880] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:06:59,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911423333] [2023-11-12 02:06:59,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:59,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:06:59,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe55c97-036a-4edb-a1f5-534bd2e2c6d4/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:06:59,240 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe55c97-036a-4edb-a1f5-534bd2e2c6d4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:06:59,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe55c97-036a-4edb-a1f5-534bd2e2c6d4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:06:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:59,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-12 02:06:59,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:06:59,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:06:59,780 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:06:59,980 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:06:59,981 INFO L351 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 69 treesize of output 124 [2023-11-12 02:07:00,301 INFO L322 Elim1Store]: treesize reduction 77, result has 66.4 percent of original size [2023-11-12 02:07:00,302 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 88 treesize of output 191 [2023-11-12 02:07:01,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:01,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911423333] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:01,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:07:01,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 12 [2023-11-12 02:07:01,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702816672] [2023-11-12 02:07:01,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:01,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:07:01,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:01,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:07:01,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-11-12 02:07:01,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 667 [2023-11-12 02:07:01,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 123 flow. Second operand has 6 states, 6 states have (on average 259.3333333333333) internal successors, (1556), 6 states have internal predecessors, (1556), 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) [2023-11-12 02:07:01,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:01,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 667 [2023-11-12 02:07:01,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:02,284 INFO L124 PetriNetUnfolderBase]: 1125/1547 cut-off events. [2023-11-12 02:07:02,285 INFO L125 PetriNetUnfolderBase]: For 464/471 co-relation queries the response was YES. [2023-11-12 02:07:02,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3763 conditions, 1547 events. 1125/1547 cut-off events. For 464/471 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 6045 event pairs, 105 based on Foata normal form. 6/1324 useless extension candidates. Maximal degree in co-relation 3733. Up to 917 conditions per place. [2023-11-12 02:07:02,303 INFO L140 encePairwiseOnDemand]: 661/667 looper letters, 62 selfloop transitions, 10 changer transitions 1/76 dead transitions. [2023-11-12 02:07:02,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 76 transitions, 380 flow [2023-11-12 02:07:02,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:07:02,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:07:02,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1091 transitions. [2023-11-12 02:07:02,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4089205397301349 [2023-11-12 02:07:02,310 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1091 transitions. [2023-11-12 02:07:02,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1091 transitions. [2023-11-12 02:07:02,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:02,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1091 transitions. [2023-11-12 02:07:02,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 272.75) internal successors, (1091), 4 states have internal predecessors, (1091), 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) [2023-11-12 02:07:02,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 667.0) internal successors, (3335), 5 states have internal predecessors, (3335), 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) [2023-11-12 02:07:02,328 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 667.0) internal successors, (3335), 5 states have internal predecessors, (3335), 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) [2023-11-12 02:07:02,328 INFO L175 Difference]: Start difference. First operand has 37 places, 37 transitions, 123 flow. Second operand 4 states and 1091 transitions. [2023-11-12 02:07:02,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 76 transitions, 380 flow [2023-11-12 02:07:02,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 76 transitions, 365 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-11-12 02:07:02,333 INFO L231 Difference]: Finished difference. Result has 41 places, 46 transitions, 200 flow [2023-11-12 02:07:02,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=667, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=41, PETRI_TRANSITIONS=46} [2023-11-12 02:07:02,335 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2023-11-12 02:07:02,335 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 46 transitions, 200 flow [2023-11-12 02:07:02,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 259.3333333333333) internal successors, (1556), 6 states have internal predecessors, (1556), 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) [2023-11-12 02:07:02,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:02,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:02,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe55c97-036a-4edb-a1f5-534bd2e2c6d4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-12 02:07:02,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe55c97-036a-4edb-a1f5-534bd2e2c6d4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:02,545 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-12 02:07:02,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:02,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1177062664, now seen corresponding path program 1 times [2023-11-12 02:07:02,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:02,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399271617] [2023-11-12 02:07:02,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:02,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:02,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:07:02,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:02,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399271617] [2023-11-12 02:07:02,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399271617] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:02,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:02,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:07:02,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573804207] [2023-11-12 02:07:02,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:02,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:07:02,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:02,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:07:02,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:07:02,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 667 [2023-11-12 02:07:02,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 46 transitions, 200 flow. Second operand has 4 states, 4 states have (on average 275.25) internal successors, (1101), 4 states have internal predecessors, (1101), 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) [2023-11-12 02:07:02,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:02,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 667 [2023-11-12 02:07:02,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:03,486 INFO L124 PetriNetUnfolderBase]: 1756/2534 cut-off events. [2023-11-12 02:07:03,486 INFO L125 PetriNetUnfolderBase]: For 2653/2659 co-relation queries the response was YES. [2023-11-12 02:07:03,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6909 conditions, 2534 events. 1756/2534 cut-off events. For 2653/2659 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 11971 event pairs, 955 based on Foata normal form. 114/2638 useless extension candidates. Maximal degree in co-relation 4084. Up to 1436 conditions per place. [2023-11-12 02:07:03,513 INFO L140 encePairwiseOnDemand]: 659/667 looper letters, 74 selfloop transitions, 8 changer transitions 0/85 dead transitions. [2023-11-12 02:07:03,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 85 transitions, 518 flow [2023-11-12 02:07:03,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:07:03,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:07:03,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1411 transitions. [2023-11-12 02:07:03,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42308845577211396 [2023-11-12 02:07:03,520 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1411 transitions. [2023-11-12 02:07:03,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1411 transitions. [2023-11-12 02:07:03,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:03,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1411 transitions. [2023-11-12 02:07:03,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 282.2) internal successors, (1411), 5 states have internal predecessors, (1411), 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) [2023-11-12 02:07:03,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 667.0) internal successors, (4002), 6 states have internal predecessors, (4002), 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) [2023-11-12 02:07:03,538 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 667.0) internal successors, (4002), 6 states have internal predecessors, (4002), 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) [2023-11-12 02:07:03,539 INFO L175 Difference]: Start difference. First operand has 41 places, 46 transitions, 200 flow. Second operand 5 states and 1411 transitions. [2023-11-12 02:07:03,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 85 transitions, 518 flow [2023-11-12 02:07:03,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 85 transitions, 518 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:07:03,549 INFO L231 Difference]: Finished difference. Result has 48 places, 53 transitions, 282 flow [2023-11-12 02:07:03,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=667, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=282, PETRI_PLACES=48, PETRI_TRANSITIONS=53} [2023-11-12 02:07:03,551 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2023-11-12 02:07:03,552 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 53 transitions, 282 flow [2023-11-12 02:07:03,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 275.25) internal successors, (1101), 4 states have internal predecessors, (1101), 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) [2023-11-12 02:07:03,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:03,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:03,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:07:03,554 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-12 02:07:03,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:03,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1397909465, now seen corresponding path program 1 times [2023-11-12 02:07:03,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:03,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77501478] [2023-11-12 02:07:03,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:03,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:03,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:03,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:07:03,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:03,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77501478] [2023-11-12 02:07:03,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77501478] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:03,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:03,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:07:03,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96299426] [2023-11-12 02:07:03,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:03,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:07:03,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:03,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:07:03,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:07:03,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 667 [2023-11-12 02:07:03,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 53 transitions, 282 flow. Second operand has 4 states, 4 states have (on average 275.5) internal successors, (1102), 4 states have internal predecessors, (1102), 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) [2023-11-12 02:07:03,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:03,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 667 [2023-11-12 02:07:03,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:04,239 INFO L124 PetriNetUnfolderBase]: 1232/1803 cut-off events. [2023-11-12 02:07:04,239 INFO L125 PetriNetUnfolderBase]: For 2003/2003 co-relation queries the response was YES. [2023-11-12 02:07:04,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5106 conditions, 1803 events. 1232/1803 cut-off events. For 2003/2003 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 8183 event pairs, 675 based on Foata normal form. 43/1840 useless extension candidates. Maximal degree in co-relation 4245. Up to 1436 conditions per place. [2023-11-12 02:07:04,257 INFO L140 encePairwiseOnDemand]: 659/667 looper letters, 66 selfloop transitions, 8 changer transitions 0/77 dead transitions. [2023-11-12 02:07:04,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 77 transitions, 514 flow [2023-11-12 02:07:04,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:07:04,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:07:04,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1408 transitions. [2023-11-12 02:07:04,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4221889055472264 [2023-11-12 02:07:04,264 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1408 transitions. [2023-11-12 02:07:04,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1408 transitions. [2023-11-12 02:07:04,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:04,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1408 transitions. [2023-11-12 02:07:04,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 281.6) internal successors, (1408), 5 states have internal predecessors, (1408), 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) [2023-11-12 02:07:04,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 667.0) internal successors, (4002), 6 states have internal predecessors, (4002), 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) [2023-11-12 02:07:04,281 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 667.0) internal successors, (4002), 6 states have internal predecessors, (4002), 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) [2023-11-12 02:07:04,281 INFO L175 Difference]: Start difference. First operand has 48 places, 53 transitions, 282 flow. Second operand 5 states and 1408 transitions. [2023-11-12 02:07:04,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 77 transitions, 514 flow [2023-11-12 02:07:04,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 77 transitions, 506 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-12 02:07:04,288 INFO L231 Difference]: Finished difference. Result has 52 places, 53 transitions, 297 flow [2023-11-12 02:07:04,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=667, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=297, PETRI_PLACES=52, PETRI_TRANSITIONS=53} [2023-11-12 02:07:04,289 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 18 predicate places. [2023-11-12 02:07:04,289 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 53 transitions, 297 flow [2023-11-12 02:07:04,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 275.5) internal successors, (1102), 4 states have internal predecessors, (1102), 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) [2023-11-12 02:07:04,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:04,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:04,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:07:04,291 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-12 02:07:04,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:04,292 INFO L85 PathProgramCache]: Analyzing trace with hash 289062087, now seen corresponding path program 1 times [2023-11-12 02:07:04,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:04,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494362006] [2023-11-12 02:07:04,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:04,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:04,474 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:07:04,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:04,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494362006] [2023-11-12 02:07:04,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494362006] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:04,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:04,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:07:04,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957481004] [2023-11-12 02:07:04,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:04,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:07:04,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:04,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:07:04,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:07:04,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 667 [2023-11-12 02:07:04,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 53 transitions, 297 flow. Second operand has 5 states, 5 states have (on average 273.4) internal successors, (1367), 5 states have internal predecessors, (1367), 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) [2023-11-12 02:07:04,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:04,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 667 [2023-11-12 02:07:04,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:05,366 INFO L124 PetriNetUnfolderBase]: 2325/3437 cut-off events. [2023-11-12 02:07:05,366 INFO L125 PetriNetUnfolderBase]: For 3878/3910 co-relation queries the response was YES. [2023-11-12 02:07:05,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9538 conditions, 3437 events. 2325/3437 cut-off events. For 3878/3910 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 18190 event pairs, 1226 based on Foata normal form. 119/3538 useless extension candidates. Maximal degree in co-relation 7877. Up to 1387 conditions per place. [2023-11-12 02:07:05,398 INFO L140 encePairwiseOnDemand]: 662/667 looper letters, 85 selfloop transitions, 15 changer transitions 0/103 dead transitions. [2023-11-12 02:07:05,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 103 transitions, 702 flow [2023-11-12 02:07:05,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:07:05,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:07:05,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1415 transitions. [2023-11-12 02:07:05,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.424287856071964 [2023-11-12 02:07:05,406 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1415 transitions. [2023-11-12 02:07:05,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1415 transitions. [2023-11-12 02:07:05,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:05,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1415 transitions. [2023-11-12 02:07:05,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 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) [2023-11-12 02:07:05,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 667.0) internal successors, (4002), 6 states have internal predecessors, (4002), 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) [2023-11-12 02:07:05,422 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 667.0) internal successors, (4002), 6 states have internal predecessors, (4002), 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) [2023-11-12 02:07:05,423 INFO L175 Difference]: Start difference. First operand has 52 places, 53 transitions, 297 flow. Second operand 5 states and 1415 transitions. [2023-11-12 02:07:05,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 103 transitions, 702 flow [2023-11-12 02:07:05,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 103 transitions, 686 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:07:05,431 INFO L231 Difference]: Finished difference. Result has 55 places, 57 transitions, 377 flow [2023-11-12 02:07:05,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=667, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=377, PETRI_PLACES=55, PETRI_TRANSITIONS=57} [2023-11-12 02:07:05,434 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 21 predicate places. [2023-11-12 02:07:05,435 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 57 transitions, 377 flow [2023-11-12 02:07:05,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 273.4) internal successors, (1367), 5 states have internal predecessors, (1367), 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) [2023-11-12 02:07:05,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:05,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:05,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:07:05,440 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-12 02:07:05,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:05,441 INFO L85 PathProgramCache]: Analyzing trace with hash 974020636, now seen corresponding path program 1 times [2023-11-12 02:07:05,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:05,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902985389] [2023-11-12 02:07:05,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:05,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:05,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:07:05,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:05,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902985389] [2023-11-12 02:07:05,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902985389] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:05,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:05,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:07:05,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145800250] [2023-11-12 02:07:05,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:05,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:07:05,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:05,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:07:05,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:07:05,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 667 [2023-11-12 02:07:05,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 57 transitions, 377 flow. Second operand has 5 states, 5 states have (on average 273.4) internal successors, (1367), 5 states have internal predecessors, (1367), 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) [2023-11-12 02:07:05,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:05,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 667 [2023-11-12 02:07:05,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:06,635 INFO L124 PetriNetUnfolderBase]: 3323/4970 cut-off events. [2023-11-12 02:07:06,636 INFO L125 PetriNetUnfolderBase]: For 6303/6303 co-relation queries the response was YES. [2023-11-12 02:07:06,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14443 conditions, 4970 events. 3323/4970 cut-off events. For 6303/6303 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 27967 event pairs, 1048 based on Foata normal form. 80/5043 useless extension candidates. Maximal degree in co-relation 12586. Up to 2425 conditions per place. [2023-11-12 02:07:06,699 INFO L140 encePairwiseOnDemand]: 660/667 looper letters, 91 selfloop transitions, 10 changer transitions 1/105 dead transitions. [2023-11-12 02:07:06,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 105 transitions, 813 flow [2023-11-12 02:07:06,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:07:06,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:07:06,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1687 transitions. [2023-11-12 02:07:06,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4215392303848076 [2023-11-12 02:07:06,759 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1687 transitions. [2023-11-12 02:07:06,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1687 transitions. [2023-11-12 02:07:06,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:06,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1687 transitions. [2023-11-12 02:07:06,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 281.1666666666667) internal successors, (1687), 6 states have internal predecessors, (1687), 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) [2023-11-12 02:07:06,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 667.0) internal successors, (4669), 7 states have internal predecessors, (4669), 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) [2023-11-12 02:07:06,780 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 667.0) internal successors, (4669), 7 states have internal predecessors, (4669), 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) [2023-11-12 02:07:06,780 INFO L175 Difference]: Start difference. First operand has 55 places, 57 transitions, 377 flow. Second operand 6 states and 1687 transitions. [2023-11-12 02:07:06,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 105 transitions, 813 flow [2023-11-12 02:07:06,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 105 transitions, 791 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-12 02:07:06,804 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 397 flow [2023-11-12 02:07:06,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=667, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=397, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2023-11-12 02:07:06,807 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 27 predicate places. [2023-11-12 02:07:06,807 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 397 flow [2023-11-12 02:07:06,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 273.4) internal successors, (1367), 5 states have internal predecessors, (1367), 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) [2023-11-12 02:07:06,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:06,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:06,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:07:06,809 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-12 02:07:06,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:06,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1977011889, now seen corresponding path program 1 times [2023-11-12 02:07:06,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:06,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216019942] [2023-11-12 02:07:06,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:06,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:07,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:07:07,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:07,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216019942] [2023-11-12 02:07:07,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216019942] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:07,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073600202] [2023-11-12 02:07:07,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:07,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:07,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe55c97-036a-4edb-a1f5-534bd2e2c6d4/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:07,120 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe55c97-036a-4edb-a1f5-534bd2e2c6d4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:07,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe55c97-036a-4edb-a1f5-534bd2e2c6d4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:07:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:07,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 02:07:07,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:07,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:07:07,471 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:07,626 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:07:07,628 INFO L351 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 69 treesize of output 124 [2023-11-12 02:07:07,873 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:07:07,874 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 88 treesize of output 268 [2023-11-12 02:07:19,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:07:19,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073600202] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:19,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:07:19,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 9 [2023-11-12 02:07:19,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499333992] [2023-11-12 02:07:19,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:19,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:07:19,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:19,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:07:19,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:07:19,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 667 [2023-11-12 02:07:19,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 397 flow. Second operand has 5 states, 5 states have (on average 264.4) internal successors, (1322), 5 states have internal predecessors, (1322), 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) [2023-11-12 02:07:19,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:19,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 667 [2023-11-12 02:07:19,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:20,579 INFO L124 PetriNetUnfolderBase]: 4307/6632 cut-off events. [2023-11-12 02:07:20,580 INFO L125 PetriNetUnfolderBase]: For 12142/12142 co-relation queries the response was YES. [2023-11-12 02:07:20,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20494 conditions, 6632 events. 4307/6632 cut-off events. For 12142/12142 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 40800 event pairs, 1852 based on Foata normal form. 9/6621 useless extension candidates. Maximal degree in co-relation 18658. Up to 3082 conditions per place. [2023-11-12 02:07:20,659 INFO L140 encePairwiseOnDemand]: 660/667 looper letters, 76 selfloop transitions, 9 changer transitions 27/115 dead transitions. [2023-11-12 02:07:20,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 115 transitions, 940 flow [2023-11-12 02:07:20,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:07:20,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:07:20,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1372 transitions. [2023-11-12 02:07:20,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4113943028485757 [2023-11-12 02:07:20,666 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1372 transitions. [2023-11-12 02:07:20,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1372 transitions. [2023-11-12 02:07:20,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:20,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1372 transitions. [2023-11-12 02:07:20,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 274.4) internal successors, (1372), 5 states have internal predecessors, (1372), 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) [2023-11-12 02:07:20,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 667.0) internal successors, (4002), 6 states have internal predecessors, (4002), 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) [2023-11-12 02:07:20,680 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 667.0) internal successors, (4002), 6 states have internal predecessors, (4002), 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) [2023-11-12 02:07:20,680 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 397 flow. Second operand 5 states and 1372 transitions. [2023-11-12 02:07:20,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 115 transitions, 940 flow [2023-11-12 02:07:20,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 115 transitions, 921 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-12 02:07:20,697 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 431 flow [2023-11-12 02:07:20,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=667, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=431, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2023-11-12 02:07:20,698 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 31 predicate places. [2023-11-12 02:07:20,698 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 431 flow [2023-11-12 02:07:20,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 264.4) internal successors, (1322), 5 states have internal predecessors, (1322), 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) [2023-11-12 02:07:20,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:20,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:20,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe55c97-036a-4edb-a1f5-534bd2e2c6d4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:20,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe55c97-036a-4edb-a1f5-534bd2e2c6d4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:20,906 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-12 02:07:20,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:20,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1792130140, now seen corresponding path program 1 times [2023-11-12 02:07:20,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:20,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094986250] [2023-11-12 02:07:20,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:20,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:20,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:21,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:07:21,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:21,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094986250] [2023-11-12 02:07:21,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094986250] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:21,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:21,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:07:21,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723174829] [2023-11-12 02:07:21,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:21,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:07:21,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:21,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:07:21,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:07:21,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 667 [2023-11-12 02:07:21,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 431 flow. Second operand has 5 states, 5 states have (on average 273.4) internal successors, (1367), 5 states have internal predecessors, (1367), 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) [2023-11-12 02:07:21,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:21,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 667 [2023-11-12 02:07:21,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:22,048 INFO L124 PetriNetUnfolderBase]: 2699/4172 cut-off events. [2023-11-12 02:07:22,048 INFO L125 PetriNetUnfolderBase]: For 10471/10471 co-relation queries the response was YES. [2023-11-12 02:07:22,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14104 conditions, 4172 events. 2699/4172 cut-off events. For 10471/10471 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 23517 event pairs, 1097 based on Foata normal form. 70/4233 useless extension candidates. Maximal degree in co-relation 13979. Up to 1952 conditions per place. [2023-11-12 02:07:22,098 INFO L140 encePairwiseOnDemand]: 661/667 looper letters, 87 selfloop transitions, 11 changer transitions 1/102 dead transitions. [2023-11-12 02:07:22,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 102 transitions, 847 flow [2023-11-12 02:07:22,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:07:22,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:07:22,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1414 transitions. [2023-11-12 02:07:22,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4239880059970015 [2023-11-12 02:07:22,105 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1414 transitions. [2023-11-12 02:07:22,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1414 transitions. [2023-11-12 02:07:22,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:22,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1414 transitions. [2023-11-12 02:07:22,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 282.8) internal successors, (1414), 5 states have internal predecessors, (1414), 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) [2023-11-12 02:07:22,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 667.0) internal successors, (4002), 6 states have internal predecessors, (4002), 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) [2023-11-12 02:07:22,136 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 667.0) internal successors, (4002), 6 states have internal predecessors, (4002), 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) [2023-11-12 02:07:22,137 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 431 flow. Second operand 5 states and 1414 transitions. [2023-11-12 02:07:22,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 102 transitions, 847 flow [2023-11-12 02:07:22,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 102 transitions, 815 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-11-12 02:07:22,167 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 429 flow [2023-11-12 02:07:22,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=667, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=429, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2023-11-12 02:07:22,170 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 32 predicate places. [2023-11-12 02:07:22,170 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 429 flow [2023-11-12 02:07:22,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 273.4) internal successors, (1367), 5 states have internal predecessors, (1367), 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) [2023-11-12 02:07:22,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:22,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:22,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:07:22,172 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-12 02:07:22,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:22,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1474983391, now seen corresponding path program 1 times [2023-11-12 02:07:22,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:22,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095894068] [2023-11-12 02:07:22,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:22,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:22,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:22,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:07:22,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:22,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095894068] [2023-11-12 02:07:22,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095894068] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:22,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842175617] [2023-11-12 02:07:22,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:22,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:22,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe55c97-036a-4edb-a1f5-534bd2e2c6d4/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:22,959 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe55c97-036a-4edb-a1f5-534bd2e2c6d4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:22,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe55c97-036a-4edb-a1f5-534bd2e2c6d4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:07:23,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:23,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 52 conjunts are in the unsatisfiable core [2023-11-12 02:07:23,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:23,198 INFO L322 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-12 02:07:23,199 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2023-11-12 02:07:23,219 INFO L322 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-12 02:07:23,219 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2023-11-12 02:07:23,246 INFO L322 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-12 02:07:23,246 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 11 [2023-11-12 02:07:23,317 INFO L322 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-12 02:07:23,317 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2023-11-12 02:07:23,354 INFO L322 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-12 02:07:23,355 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 11 [2023-11-12 02:07:23,386 INFO L322 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-12 02:07:23,386 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2023-11-12 02:07:23,434 INFO L322 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-12 02:07:23,435 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2023-11-12 02:07:23,474 INFO L322 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-12 02:07:23,474 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 11 [2023-11-12 02:07:23,509 INFO L322 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-12 02:07:23,510 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 11 [2023-11-12 02:07:23,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:07:23,537 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2023-11-12 02:07:23,550 INFO L322 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2023-11-12 02:07:23,551 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 1 [2023-11-12 02:07:23,573 INFO L322 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-12 02:07:23,573 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 11 [2023-11-12 02:07:23,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:07:23,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:07:23,958 INFO L322 Elim1Store]: treesize reduction 118, result has 27.2 percent of original size [2023-11-12 02:07:23,959 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 70 treesize of output 104