./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3f188168fffbbf8c03071990a7bb806f47bcfd599d52fd9001ab6073a6b782e8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:11:19,056 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:11:19,127 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:11:19,132 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:11:19,133 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:11:19,160 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:11:19,161 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:11:19,161 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:11:19,162 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:11:19,163 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:11:19,163 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:11:19,164 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:11:19,164 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:11:19,165 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:11:19,166 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:11:19,166 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:11:19,167 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:11:19,167 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:11:19,168 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:11:19,168 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:11:19,169 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:11:19,170 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:11:19,170 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:11:19,171 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:11:19,171 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:11:19,172 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:11:19,172 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:11:19,173 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:11:19,173 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:11:19,174 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:11:19,174 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:11:19,175 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:11:19,175 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:11:19,176 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:11:19,176 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:11:19,176 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:11:19,177 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:11:19,177 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:11:19,178 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:11:19,178 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_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f188168fffbbf8c03071990a7bb806f47bcfd599d52fd9001ab6073a6b782e8 [2023-11-06 22:11:19,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:11:19,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:11:19,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:11:19,463 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:11:19,464 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:11:19,466 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2023-11-06 22:11:22,583 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:11:22,827 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:11:22,828 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2023-11-06 22:11:22,837 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/data/b59ca5012/139b9d2e5943414ca7b9c268e5d5a9c4/FLAG80f0a3484 [2023-11-06 22:11:22,853 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/data/b59ca5012/139b9d2e5943414ca7b9c268e5d5a9c4 [2023-11-06 22:11:22,856 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:11:22,858 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:11:22,859 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:11:22,860 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:11:22,866 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:11:22,867 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:11:22" (1/1) ... [2023-11-06 22:11:22,868 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2507febf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:22, skipping insertion in model container [2023-11-06 22:11:22,868 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:11:22" (1/1) ... [2023-11-06 22:11:22,900 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:11:23,115 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_9a0eb781-3f0a-4f20-8251-027c92d30b8e/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c[2728,2741] [2023-11-06 22:11:23,126 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:11:23,136 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:11:23,161 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_9a0eb781-3f0a-4f20-8251-027c92d30b8e/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c[2728,2741] [2023-11-06 22:11:23,166 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:11:23,182 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:11:23,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:23 WrapperNode [2023-11-06 22:11:23,183 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:11:23,184 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:11:23,184 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:11:23,185 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:11:23,193 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:23" (1/1) ... [2023-11-06 22:11:23,202 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:23" (1/1) ... [2023-11-06 22:11:23,243 INFO L138 Inliner]: procedures = 26, calls = 49, calls flagged for inlining = 13, calls inlined = 21, statements flattened = 285 [2023-11-06 22:11:23,245 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:11:23,248 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:11:23,248 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:11:23,248 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:11:23,258 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:23" (1/1) ... [2023-11-06 22:11:23,258 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:23" (1/1) ... [2023-11-06 22:11:23,264 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:23" (1/1) ... [2023-11-06 22:11:23,264 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:23" (1/1) ... [2023-11-06 22:11:23,277 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:23" (1/1) ... [2023-11-06 22:11:23,282 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:23" (1/1) ... [2023-11-06 22:11:23,295 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:23" (1/1) ... [2023-11-06 22:11:23,297 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:23" (1/1) ... [2023-11-06 22:11:23,302 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:11:23,303 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:11:23,303 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:11:23,304 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:11:23,305 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:23" (1/1) ... [2023-11-06 22:11:23,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:11:23,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:11:23,344 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:11:23,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:11:23,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:11:23,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:11:23,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:11:23,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:11:23,418 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:11:23,418 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:11:23,418 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:11:23,418 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:11:23,418 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:11:23,419 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:11:23,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:11:23,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:11:23,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:11:23,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:11:23,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:11:23,424 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:11:23,579 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:11:23,581 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:11:24,156 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:11:24,179 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:11:24,186 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-06 22:11:24,188 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:11:24 BoogieIcfgContainer [2023-11-06 22:11:24,189 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:11:24,191 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:11:24,191 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:11:24,195 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:11:24,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:11:22" (1/3) ... [2023-11-06 22:11:24,196 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@762bb455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:11:24, skipping insertion in model container [2023-11-06 22:11:24,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:23" (2/3) ... [2023-11-06 22:11:24,197 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@762bb455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:11:24, skipping insertion in model container [2023-11-06 22:11:24,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:11:24" (3/3) ... [2023-11-06 22:11:24,199 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-trans.wvr.c [2023-11-06 22:11:24,207 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:11:24,215 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:11:24,216 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:11:24,216 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:11:24,350 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:11:24,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 337 places, 355 transitions, 731 flow [2023-11-06 22:11:24,560 INFO L124 PetriNetUnfolderBase]: 28/352 cut-off events. [2023-11-06 22:11:24,561 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:11:24,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 352 events. 28/352 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 590 event pairs, 0 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 274. Up to 3 conditions per place. [2023-11-06 22:11:24,571 INFO L82 GeneralOperation]: Start removeDead. Operand has 337 places, 355 transitions, 731 flow [2023-11-06 22:11:24,581 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 323 places, 341 transitions, 700 flow [2023-11-06 22:11:24,584 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:11:24,595 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 323 places, 341 transitions, 700 flow [2023-11-06 22:11:24,598 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 323 places, 341 transitions, 700 flow [2023-11-06 22:11:24,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 323 places, 341 transitions, 700 flow [2023-11-06 22:11:24,735 INFO L124 PetriNetUnfolderBase]: 28/341 cut-off events. [2023-11-06 22:11:24,736 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:11:24,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 341 events. 28/341 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 584 event pairs, 0 based on Foata normal form. 0/313 useless extension candidates. Maximal degree in co-relation 274. Up to 3 conditions per place. [2023-11-06 22:11:24,757 INFO L119 LiptonReduction]: Number of co-enabled transitions 18600 [2023-11-06 22:11:38,838 INFO L134 LiptonReduction]: Checked pairs total: 20157 [2023-11-06 22:11:38,839 INFO L136 LiptonReduction]: Total number of compositions: 381 [2023-11-06 22:11:38,856 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:11:38,863 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3ac45322, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:11:38,863 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-06 22:11:38,871 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:11:38,872 INFO L124 PetriNetUnfolderBase]: 8/35 cut-off events. [2023-11-06 22:11:38,872 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:11:38,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:38,873 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] [2023-11-06 22:11:38,873 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)] === [2023-11-06 22:11:38,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:38,879 INFO L85 PathProgramCache]: Analyzing trace with hash 373435280, now seen corresponding path program 1 times [2023-11-06 22:11:38,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:38,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713196344] [2023-11-06 22:11:38,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:38,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:39,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:39,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:39,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713196344] [2023-11-06 22:11:39,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713196344] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:39,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:11:39,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:11:39,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731198955] [2023-11-06 22:11:39,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:39,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:11:39,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:39,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:11:39,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:11:39,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 736 [2023-11-06 22:11:39,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 311.4) internal successors, (1557), 5 states have internal predecessors, (1557), 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) [2023-11-06 22:11:39,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:39,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 736 [2023-11-06 22:11:39,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:40,629 INFO L124 PetriNetUnfolderBase]: 1849/2606 cut-off events. [2023-11-06 22:11:40,630 INFO L125 PetriNetUnfolderBase]: For 176/176 co-relation queries the response was YES. [2023-11-06 22:11:40,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5452 conditions, 2606 events. 1849/2606 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 10496 event pairs, 646 based on Foata normal form. 1/1981 useless extension candidates. Maximal degree in co-relation 2528. Up to 1172 conditions per place. [2023-11-06 22:11:40,651 INFO L140 encePairwiseOnDemand]: 727/736 looper letters, 92 selfloop transitions, 8 changer transitions 4/104 dead transitions. [2023-11-06 22:11:40,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 104 transitions, 470 flow [2023-11-06 22:11:40,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:11:40,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:11:40,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2254 transitions. [2023-11-06 22:11:40,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2023-11-06 22:11:40,679 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2254 transitions. [2023-11-06 22:11:40,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2254 transitions. [2023-11-06 22:11:40,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:40,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2254 transitions. [2023-11-06 22:11:40,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 322.0) internal successors, (2254), 7 states have internal predecessors, (2254), 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) [2023-11-06 22:11:40,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 736.0) internal successors, (5888), 8 states have internal predecessors, (5888), 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) [2023-11-06 22:11:40,718 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 736.0) internal successors, (5888), 8 states have internal predecessors, (5888), 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) [2023-11-06 22:11:40,720 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 90 flow. Second operand 7 states and 2254 transitions. [2023-11-06 22:11:40,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 104 transitions, 470 flow [2023-11-06 22:11:40,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 104 transitions, 434 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-06 22:11:40,732 INFO L231 Difference]: Finished difference. Result has 42 places, 42 transitions, 133 flow [2023-11-06 22:11:40,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=133, PETRI_PLACES=42, PETRI_TRANSITIONS=42} [2023-11-06 22:11:40,738 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 4 predicate places. [2023-11-06 22:11:40,738 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 42 transitions, 133 flow [2023-11-06 22:11:40,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 311.4) internal successors, (1557), 5 states have internal predecessors, (1557), 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) [2023-11-06 22:11:40,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:40,740 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] [2023-11-06 22:11:40,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:11:40,741 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)] === [2023-11-06 22:11:40,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:40,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1399256319, now seen corresponding path program 1 times [2023-11-06 22:11:40,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:40,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228461324] [2023-11-06 22:11:40,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:40,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:41,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:41,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:41,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228461324] [2023-11-06 22:11:41,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228461324] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:11:41,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380117279] [2023-11-06 22:11:41,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:41,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:41,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:11:41,056 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:11:41,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:11:41,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:41,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:11:41,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:41,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:41,418 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:11:41,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:41,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380117279] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:11:41,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:11:41,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 12 [2023-11-06 22:11:41,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999283195] [2023-11-06 22:11:41,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:41,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:11:41,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:41,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:11:41,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:11:41,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 736 [2023-11-06 22:11:41,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 133 flow. Second operand has 6 states, 6 states have (on average 301.8333333333333) internal successors, (1811), 6 states have internal predecessors, (1811), 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) [2023-11-06 22:11:41,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:41,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 736 [2023-11-06 22:11:41,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:42,930 INFO L124 PetriNetUnfolderBase]: 3854/5460 cut-off events. [2023-11-06 22:11:42,931 INFO L125 PetriNetUnfolderBase]: For 408/408 co-relation queries the response was YES. [2023-11-06 22:11:42,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11843 conditions, 5460 events. 3854/5460 cut-off events. For 408/408 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 26260 event pairs, 744 based on Foata normal form. 1/4160 useless extension candidates. Maximal degree in co-relation 5538. Up to 2333 conditions per place. [2023-11-06 22:11:42,974 INFO L140 encePairwiseOnDemand]: 727/736 looper letters, 145 selfloop transitions, 9 changer transitions 8/162 dead transitions. [2023-11-06 22:11:42,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 162 transitions, 780 flow [2023-11-06 22:11:42,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:11:42,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:11:42,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2539 transitions. [2023-11-06 22:11:42,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4312160326086957 [2023-11-06 22:11:42,984 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2539 transitions. [2023-11-06 22:11:42,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2539 transitions. [2023-11-06 22:11:42,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:42,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2539 transitions. [2023-11-06 22:11:43,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 317.375) internal successors, (2539), 8 states have internal predecessors, (2539), 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) [2023-11-06 22:11:43,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 736.0) internal successors, (6624), 9 states have internal predecessors, (6624), 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) [2023-11-06 22:11:43,021 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 736.0) internal successors, (6624), 9 states have internal predecessors, (6624), 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) [2023-11-06 22:11:43,021 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 133 flow. Second operand 8 states and 2539 transitions. [2023-11-06 22:11:43,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 162 transitions, 780 flow [2023-11-06 22:11:43,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 162 transitions, 767 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-11-06 22:11:43,031 INFO L231 Difference]: Finished difference. Result has 51 places, 50 transitions, 200 flow [2023-11-06 22:11:43,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=200, PETRI_PLACES=51, PETRI_TRANSITIONS=50} [2023-11-06 22:11:43,032 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 13 predicate places. [2023-11-06 22:11:43,032 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 50 transitions, 200 flow [2023-11-06 22:11:43,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 301.8333333333333) internal successors, (1811), 6 states have internal predecessors, (1811), 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) [2023-11-06 22:11:43,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:43,034 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] [2023-11-06 22:11:43,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 22:11:43,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:43,241 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)] === [2023-11-06 22:11:43,243 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:43,243 INFO L85 PathProgramCache]: Analyzing trace with hash -500915880, now seen corresponding path program 1 times [2023-11-06 22:11:43,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:43,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239051973] [2023-11-06 22:11:43,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:43,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:43,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:43,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:43,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239051973] [2023-11-06 22:11:43,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239051973] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:11:43,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70785616] [2023-11-06 22:11:43,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:43,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:43,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:11:43,550 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:11:43,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:11:43,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:43,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:11:43,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:43,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:43,884 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:11:44,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:44,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70785616] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:11:44,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:11:44,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2023-11-06 22:11:44,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939888538] [2023-11-06 22:11:44,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:11:44,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 22:11:44,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:44,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 22:11:44,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:11:44,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 736 [2023-11-06 22:11:44,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 50 transitions, 200 flow. Second operand has 15 states, 15 states have (on average 301.06666666666666) internal successors, (4516), 15 states have internal predecessors, (4516), 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) [2023-11-06 22:11:44,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:44,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 736 [2023-11-06 22:11:44,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:47,989 INFO L124 PetriNetUnfolderBase]: 8311/11925 cut-off events. [2023-11-06 22:11:47,989 INFO L125 PetriNetUnfolderBase]: For 1533/1533 co-relation queries the response was YES. [2023-11-06 22:11:48,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26662 conditions, 11925 events. 8311/11925 cut-off events. For 1533/1533 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 64273 event pairs, 3408 based on Foata normal form. 4/9117 useless extension candidates. Maximal degree in co-relation 19736. Up to 2624 conditions per place. [2023-11-06 22:11:48,132 INFO L140 encePairwiseOnDemand]: 726/736 looper letters, 228 selfloop transitions, 25 changer transitions 24/277 dead transitions. [2023-11-06 22:11:48,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 277 transitions, 1384 flow [2023-11-06 22:11:48,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-06 22:11:48,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-06 22:11:48,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 6229 transitions. [2023-11-06 22:11:48,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4231657608695652 [2023-11-06 22:11:48,175 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 6229 transitions. [2023-11-06 22:11:48,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 6229 transitions. [2023-11-06 22:11:48,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:48,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 6229 transitions. [2023-11-06 22:11:48,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 311.45) internal successors, (6229), 20 states have internal predecessors, (6229), 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) [2023-11-06 22:11:48,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 736.0) internal successors, (15456), 21 states have internal predecessors, (15456), 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) [2023-11-06 22:11:48,258 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 736.0) internal successors, (15456), 21 states have internal predecessors, (15456), 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) [2023-11-06 22:11:48,258 INFO L175 Difference]: Start difference. First operand has 51 places, 50 transitions, 200 flow. Second operand 20 states and 6229 transitions. [2023-11-06 22:11:48,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 277 transitions, 1384 flow [2023-11-06 22:11:48,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 277 transitions, 1378 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:11:48,378 INFO L231 Difference]: Finished difference. Result has 80 places, 69 transitions, 409 flow [2023-11-06 22:11:48,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=409, PETRI_PLACES=80, PETRI_TRANSITIONS=69} [2023-11-06 22:11:48,381 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 42 predicate places. [2023-11-06 22:11:48,382 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 69 transitions, 409 flow [2023-11-06 22:11:48,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 301.06666666666666) internal successors, (4516), 15 states have internal predecessors, (4516), 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) [2023-11-06 22:11:48,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:48,386 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:11:48,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:11:48,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:48,595 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)] === [2023-11-06 22:11:48,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:48,597 INFO L85 PathProgramCache]: Analyzing trace with hash -603574137, now seen corresponding path program 2 times [2023-11-06 22:11:48,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:48,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196773524] [2023-11-06 22:11:48,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:48,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:48,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:49,086 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:49,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:49,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196773524] [2023-11-06 22:11:49,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196773524] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:11:49,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066140195] [2023-11-06 22:11:49,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:11:49,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:49,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:11:49,090 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:11:49,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:11:49,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:11:49,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:11:49,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:11:49,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:49,572 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:11:49,572 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:11:49,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066140195] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:49,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:11:49,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 14 [2023-11-06 22:11:49,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409590503] [2023-11-06 22:11:49,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:49,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:11:49,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:49,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:11:49,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:11:49,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 736 [2023-11-06 22:11:49,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 69 transitions, 409 flow. Second operand has 7 states, 7 states have (on average 318.42857142857144) internal successors, (2229), 7 states have internal predecessors, (2229), 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) [2023-11-06 22:11:49,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:49,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 736 [2023-11-06 22:11:49,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:54,149 INFO L124 PetriNetUnfolderBase]: 13615/19353 cut-off events. [2023-11-06 22:11:54,150 INFO L125 PetriNetUnfolderBase]: For 4379/4379 co-relation queries the response was YES. [2023-11-06 22:11:54,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44492 conditions, 19353 events. 13615/19353 cut-off events. For 4379/4379 co-relation queries the response was YES. Maximal size of possible extension queue 757. Compared 113997 event pairs, 352 based on Foata normal form. 1/14569 useless extension candidates. Maximal degree in co-relation 38551. Up to 9439 conditions per place. [2023-11-06 22:11:54,369 INFO L140 encePairwiseOnDemand]: 726/736 looper letters, 112 selfloop transitions, 38 changer transitions 4/154 dead transitions. [2023-11-06 22:11:54,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 154 transitions, 1016 flow [2023-11-06 22:11:54,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:11:54,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:11:54,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2936 transitions. [2023-11-06 22:11:54,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44323671497584544 [2023-11-06 22:11:54,388 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2936 transitions. [2023-11-06 22:11:54,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2936 transitions. [2023-11-06 22:11:54,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:54,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2936 transitions. [2023-11-06 22:11:54,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 326.22222222222223) internal successors, (2936), 9 states have internal predecessors, (2936), 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) [2023-11-06 22:11:54,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 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) [2023-11-06 22:11:54,439 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 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) [2023-11-06 22:11:54,448 INFO L175 Difference]: Start difference. First operand has 80 places, 69 transitions, 409 flow. Second operand 9 states and 2936 transitions. [2023-11-06 22:11:54,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 154 transitions, 1016 flow [2023-11-06 22:11:54,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 154 transitions, 969 flow, removed 22 selfloop flow, removed 1 redundant places. [2023-11-06 22:11:54,520 INFO L231 Difference]: Finished difference. Result has 89 places, 93 transitions, 615 flow [2023-11-06 22:11:54,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=615, PETRI_PLACES=89, PETRI_TRANSITIONS=93} [2023-11-06 22:11:54,522 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 51 predicate places. [2023-11-06 22:11:54,522 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 93 transitions, 615 flow [2023-11-06 22:11:54,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 318.42857142857144) internal successors, (2229), 7 states have internal predecessors, (2229), 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) [2023-11-06 22:11:54,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:54,525 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:11:54,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:11:54,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:54,734 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)] === [2023-11-06 22:11:54,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:54,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1794859975, now seen corresponding path program 3 times [2023-11-06 22:11:54,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:54,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334292219] [2023-11-06 22:11:54,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:54,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:55,146 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:55,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:55,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334292219] [2023-11-06 22:11:55,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334292219] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:11:55,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035453856] [2023-11-06 22:11:55,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:11:55,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:11:55,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:11:55,149 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:11:55,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:11:55,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-06 22:11:55,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:11:55,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:11:55,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:55,529 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:11:55,529 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:11:55,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035453856] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:55,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:11:55,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 13 [2023-11-06 22:11:55,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021328303] [2023-11-06 22:11:55,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:55,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:11:55,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:55,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:11:55,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:11:55,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 736 [2023-11-06 22:11:55,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 93 transitions, 615 flow. Second operand has 6 states, 6 states have (on average 319.0) internal successors, (1914), 6 states have internal predecessors, (1914), 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) [2023-11-06 22:11:55,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:55,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 736 [2023-11-06 22:11:55,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:01,336 INFO L124 PetriNetUnfolderBase]: 21327/30453 cut-off events. [2023-11-06 22:12:01,336 INFO L125 PetriNetUnfolderBase]: For 14735/14735 co-relation queries the response was YES. [2023-11-06 22:12:01,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76794 conditions, 30453 events. 21327/30453 cut-off events. For 14735/14735 co-relation queries the response was YES. Maximal size of possible extension queue 1186. Compared 192402 event pairs, 2838 based on Foata normal form. 1/25397 useless extension candidates. Maximal degree in co-relation 71532. Up to 13390 conditions per place. [2023-11-06 22:12:01,659 INFO L140 encePairwiseOnDemand]: 727/736 looper letters, 122 selfloop transitions, 44 changer transitions 4/170 dead transitions. [2023-11-06 22:12:01,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 170 transitions, 1218 flow [2023-11-06 22:12:01,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:12:01,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:12:01,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2626 transitions. [2023-11-06 22:12:01,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.445991847826087 [2023-11-06 22:12:01,675 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2626 transitions. [2023-11-06 22:12:01,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2626 transitions. [2023-11-06 22:12:01,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:01,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2626 transitions. [2023-11-06 22:12:01,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 328.25) internal successors, (2626), 8 states have internal predecessors, (2626), 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) [2023-11-06 22:12:01,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 736.0) internal successors, (6624), 9 states have internal predecessors, (6624), 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) [2023-11-06 22:12:01,708 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 736.0) internal successors, (6624), 9 states have internal predecessors, (6624), 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) [2023-11-06 22:12:01,709 INFO L175 Difference]: Start difference. First operand has 89 places, 93 transitions, 615 flow. Second operand 8 states and 2626 transitions. [2023-11-06 22:12:01,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 170 transitions, 1218 flow [2023-11-06 22:12:01,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 170 transitions, 1204 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:12:01,897 INFO L231 Difference]: Finished difference. Result has 96 places, 105 transitions, 838 flow [2023-11-06 22:12:01,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=601, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=838, PETRI_PLACES=96, PETRI_TRANSITIONS=105} [2023-11-06 22:12:01,904 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 58 predicate places. [2023-11-06 22:12:01,904 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 105 transitions, 838 flow [2023-11-06 22:12:01,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 319.0) internal successors, (1914), 6 states have internal predecessors, (1914), 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) [2023-11-06 22:12:01,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:01,906 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:01,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:12:02,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:12:02,116 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)] === [2023-11-06 22:12:02,116 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:02,117 INFO L85 PathProgramCache]: Analyzing trace with hash 590064411, now seen corresponding path program 4 times [2023-11-06 22:12:02,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:02,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963825647] [2023-11-06 22:12:02,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:02,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:02,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:02,646 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:12:02,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:02,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963825647] [2023-11-06 22:12:02,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963825647] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:12:02,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084747658] [2023-11-06 22:12:02,647 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:12:02,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:12:02,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:12:02,649 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:12:02,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:12:02,874 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:12:02,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:12:02,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:12:02,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:03,120 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:12:03,121 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:12:03,396 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:12:03,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084747658] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:12:03,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:12:03,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 18 [2023-11-06 22:12:03,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989593096] [2023-11-06 22:12:03,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:03,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:12:03,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:03,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:12:03,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:12:03,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 736 [2023-11-06 22:12:03,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 105 transitions, 838 flow. Second operand has 8 states, 8 states have (on average 300.125) internal successors, (2401), 8 states have internal predecessors, (2401), 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) [2023-11-06 22:12:03,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:03,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 736 [2023-11-06 22:12:03,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:08,627 INFO L124 PetriNetUnfolderBase]: 20764/29698 cut-off events. [2023-11-06 22:12:08,627 INFO L125 PetriNetUnfolderBase]: For 34740/34740 co-relation queries the response was YES. [2023-11-06 22:12:08,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83165 conditions, 29698 events. 20764/29698 cut-off events. For 34740/34740 co-relation queries the response was YES. Maximal size of possible extension queue 1136. Compared 185836 event pairs, 6434 based on Foata normal form. 196/24977 useless extension candidates. Maximal degree in co-relation 78649. Up to 8125 conditions per place. [2023-11-06 22:12:08,848 INFO L140 encePairwiseOnDemand]: 727/736 looper letters, 214 selfloop transitions, 27 changer transitions 16/257 dead transitions. [2023-11-06 22:12:08,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 257 transitions, 2059 flow [2023-11-06 22:12:08,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:12:08,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:12:08,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2841 transitions. [2023-11-06 22:12:08,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4288949275362319 [2023-11-06 22:12:08,860 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2841 transitions. [2023-11-06 22:12:08,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2841 transitions. [2023-11-06 22:12:08,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:08,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2841 transitions. [2023-11-06 22:12:08,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 315.6666666666667) internal successors, (2841), 9 states have internal predecessors, (2841), 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) [2023-11-06 22:12:08,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 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) [2023-11-06 22:12:08,883 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 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) [2023-11-06 22:12:08,884 INFO L175 Difference]: Start difference. First operand has 96 places, 105 transitions, 838 flow. Second operand 9 states and 2841 transitions. [2023-11-06 22:12:08,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 257 transitions, 2059 flow [2023-11-06 22:12:09,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 257 transitions, 2004 flow, removed 13 selfloop flow, removed 3 redundant places. [2023-11-06 22:12:09,072 INFO L231 Difference]: Finished difference. Result has 103 places, 117 transitions, 981 flow [2023-11-06 22:12:09,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=981, PETRI_PLACES=103, PETRI_TRANSITIONS=117} [2023-11-06 22:12:09,073 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 65 predicate places. [2023-11-06 22:12:09,073 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 117 transitions, 981 flow [2023-11-06 22:12:09,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 300.125) internal successors, (2401), 8 states have internal predecessors, (2401), 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) [2023-11-06 22:12:09,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:09,075 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] [2023-11-06 22:12:09,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:12:09,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:12:09,281 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)] === [2023-11-06 22:12:09,282 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:09,282 INFO L85 PathProgramCache]: Analyzing trace with hash 979429979, now seen corresponding path program 1 times [2023-11-06 22:12:09,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:09,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490012324] [2023-11-06 22:12:09,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:09,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:09,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:09,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:12:09,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:09,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490012324] [2023-11-06 22:12:09,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490012324] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:09,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:09,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:12:09,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010989866] [2023-11-06 22:12:09,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:09,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:12:09,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:09,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:12:09,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:12:09,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 736 [2023-11-06 22:12:09,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 117 transitions, 981 flow. Second operand has 5 states, 5 states have (on average 311.2) internal successors, (1556), 5 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) [2023-11-06 22:12:09,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:09,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 736 [2023-11-06 22:12:09,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:11,867 INFO L124 PetriNetUnfolderBase]: 11831/17394 cut-off events. [2023-11-06 22:12:11,868 INFO L125 PetriNetUnfolderBase]: For 26042/26042 co-relation queries the response was YES. [2023-11-06 22:12:11,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50847 conditions, 17394 events. 11831/17394 cut-off events. For 26042/26042 co-relation queries the response was YES. Maximal size of possible extension queue 676. Compared 104662 event pairs, 5957 based on Foata normal form. 0/15137 useless extension candidates. Maximal degree in co-relation 48765. Up to 9895 conditions per place. [2023-11-06 22:12:11,991 INFO L140 encePairwiseOnDemand]: 731/736 looper letters, 65 selfloop transitions, 6 changer transitions 93/164 dead transitions. [2023-11-06 22:12:11,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 164 transitions, 1513 flow [2023-11-06 22:12:11,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:12:11,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:12:11,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1609 transitions. [2023-11-06 22:12:12,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43722826086956523 [2023-11-06 22:12:12,000 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1609 transitions. [2023-11-06 22:12:12,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1609 transitions. [2023-11-06 22:12:12,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:12,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1609 transitions. [2023-11-06 22:12:12,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 321.8) internal successors, (1609), 5 states have internal predecessors, (1609), 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) [2023-11-06 22:12:12,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 736.0) internal successors, (4416), 6 states have internal predecessors, (4416), 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) [2023-11-06 22:12:12,016 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 736.0) internal successors, (4416), 6 states have internal predecessors, (4416), 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) [2023-11-06 22:12:12,017 INFO L175 Difference]: Start difference. First operand has 103 places, 117 transitions, 981 flow. Second operand 5 states and 1609 transitions. [2023-11-06 22:12:12,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 164 transitions, 1513 flow [2023-11-06 22:12:12,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 164 transitions, 1452 flow, removed 16 selfloop flow, removed 6 redundant places. [2023-11-06 22:12:12,229 INFO L231 Difference]: Finished difference. Result has 101 places, 71 transitions, 517 flow [2023-11-06 22:12:12,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=844, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=517, PETRI_PLACES=101, PETRI_TRANSITIONS=71} [2023-11-06 22:12:12,230 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 63 predicate places. [2023-11-06 22:12:12,231 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 71 transitions, 517 flow [2023-11-06 22:12:12,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 311.2) internal successors, (1556), 5 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) [2023-11-06 22:12:12,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:12,232 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] [2023-11-06 22:12:12,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:12:12,232 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)] === [2023-11-06 22:12:12,233 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:12,233 INFO L85 PathProgramCache]: Analyzing trace with hash -219659302, now seen corresponding path program 1 times [2023-11-06 22:12:12,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:12,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035618099] [2023-11-06 22:12:12,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:12,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:12,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:12:12,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:12,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035618099] [2023-11-06 22:12:12,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035618099] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:12,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:12,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:12:12,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314439714] [2023-11-06 22:12:12,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:12,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:12:12,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:12,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:12:12,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:12:12,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 736 [2023-11-06 22:12:12,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 71 transitions, 517 flow. Second operand has 5 states, 5 states have (on average 311.2) internal successors, (1556), 5 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) [2023-11-06 22:12:12,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:12,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 736 [2023-11-06 22:12:12,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:13,590 INFO L124 PetriNetUnfolderBase]: 4661/6660 cut-off events. [2023-11-06 22:12:13,590 INFO L125 PetriNetUnfolderBase]: For 11416/11416 co-relation queries the response was YES. [2023-11-06 22:12:13,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19313 conditions, 6660 events. 4661/6660 cut-off events. For 11416/11416 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 31151 event pairs, 3236 based on Foata normal form. 98/5969 useless extension candidates. Maximal degree in co-relation 19286. Up to 6220 conditions per place. [2023-11-06 22:12:13,648 INFO L140 encePairwiseOnDemand]: 731/736 looper letters, 57 selfloop transitions, 2 changer transitions 43/102 dead transitions. [2023-11-06 22:12:13,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 102 transitions, 786 flow [2023-11-06 22:12:13,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:12:13,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:12:13,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1605 transitions. [2023-11-06 22:12:13,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361413043478261 [2023-11-06 22:12:13,655 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1605 transitions. [2023-11-06 22:12:13,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1605 transitions. [2023-11-06 22:12:13,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:13,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1605 transitions. [2023-11-06 22:12:13,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 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) [2023-11-06 22:12:13,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 736.0) internal successors, (4416), 6 states have internal predecessors, (4416), 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) [2023-11-06 22:12:13,668 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 736.0) internal successors, (4416), 6 states have internal predecessors, (4416), 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) [2023-11-06 22:12:13,668 INFO L175 Difference]: Start difference. First operand has 101 places, 71 transitions, 517 flow. Second operand 5 states and 1605 transitions. [2023-11-06 22:12:13,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 102 transitions, 786 flow [2023-11-06 22:12:13,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 102 transitions, 672 flow, removed 26 selfloop flow, removed 16 redundant places. [2023-11-06 22:12:13,685 INFO L231 Difference]: Finished difference. Result has 69 places, 59 transitions, 325 flow [2023-11-06 22:12:13,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=325, PETRI_PLACES=69, PETRI_TRANSITIONS=59} [2023-11-06 22:12:13,686 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 31 predicate places. [2023-11-06 22:12:13,686 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 59 transitions, 325 flow [2023-11-06 22:12:13,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 311.2) internal successors, (1556), 5 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) [2023-11-06 22:12:13,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:13,687 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, 1] [2023-11-06 22:12:13,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:12:13,688 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)] === [2023-11-06 22:12:13,688 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:13,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1279486499, now seen corresponding path program 1 times [2023-11-06 22:12:13,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:13,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113965459] [2023-11-06 22:12:13,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:13,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:13,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:14,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:12:14,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:14,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113965459] [2023-11-06 22:12:14,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113965459] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:12:14,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11126256] [2023-11-06 22:12:14,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:14,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:12:14,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:12:14,036 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:12:14,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:12:14,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:14,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:12:14,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:14,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:12:14,416 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:12:14,633 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:12:14,634 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 145 treesize of output 125 [2023-11-06 22:12:15,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:12:15,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11126256] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:12:15,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:12:15,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 14 [2023-11-06 22:12:15,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122603513] [2023-11-06 22:12:15,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:15,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:12:15,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:15,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:12:15,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:12:15,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 736 [2023-11-06 22:12:15,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 59 transitions, 325 flow. Second operand has 8 states, 8 states have (on average 297.375) internal successors, (2379), 8 states have internal predecessors, (2379), 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) [2023-11-06 22:12:15,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:15,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 736 [2023-11-06 22:12:15,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:17,507 INFO L124 PetriNetUnfolderBase]: 8298/11960 cut-off events. [2023-11-06 22:12:17,507 INFO L125 PetriNetUnfolderBase]: For 12506/12506 co-relation queries the response was YES. [2023-11-06 22:12:17,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32095 conditions, 11960 events. 8298/11960 cut-off events. For 12506/12506 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 64418 event pairs, 4404 based on Foata normal form. 6/10446 useless extension candidates. Maximal degree in co-relation 32080. Up to 6218 conditions per place. [2023-11-06 22:12:17,580 INFO L140 encePairwiseOnDemand]: 728/736 looper letters, 54 selfloop transitions, 6 changer transitions 77/137 dead transitions. [2023-11-06 22:12:17,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 137 transitions, 1041 flow [2023-11-06 22:12:17,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:12:17,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:12:17,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2145 transitions. [2023-11-06 22:12:17,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41634316770186336 [2023-11-06 22:12:17,591 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2145 transitions. [2023-11-06 22:12:17,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2145 transitions. [2023-11-06 22:12:17,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:17,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2145 transitions. [2023-11-06 22:12:17,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 306.42857142857144) internal successors, (2145), 7 states have internal predecessors, (2145), 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) [2023-11-06 22:12:17,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 736.0) internal successors, (5888), 8 states have internal predecessors, (5888), 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) [2023-11-06 22:12:17,613 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 736.0) internal successors, (5888), 8 states have internal predecessors, (5888), 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) [2023-11-06 22:12:17,613 INFO L175 Difference]: Start difference. First operand has 69 places, 59 transitions, 325 flow. Second operand 7 states and 2145 transitions. [2023-11-06 22:12:17,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 137 transitions, 1041 flow [2023-11-06 22:12:17,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 137 transitions, 1018 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:12:17,626 INFO L231 Difference]: Finished difference. Result has 71 places, 60 transitions, 342 flow [2023-11-06 22:12:17,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=342, PETRI_PLACES=71, PETRI_TRANSITIONS=60} [2023-11-06 22:12:17,628 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 33 predicate places. [2023-11-06 22:12:17,628 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 60 transitions, 342 flow [2023-11-06 22:12:17,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 297.375) internal successors, (2379), 8 states have internal predecessors, (2379), 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) [2023-11-06 22:12:17,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:17,630 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, 1, 1] [2023-11-06 22:12:17,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:12:17,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-06 22:12:17,838 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:12:17,838 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:17,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1094697693, now seen corresponding path program 1 times [2023-11-06 22:12:17,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:17,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956767140] [2023-11-06 22:12:17,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:17,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:17,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:18,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:12:18,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:18,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956767140] [2023-11-06 22:12:18,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956767140] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:12:18,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120940617] [2023-11-06 22:12:18,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:18,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:12:18,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:12:18,148 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:12:18,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:12:18,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:18,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:12:18,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:18,512 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:12:18,513 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:12:18,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:12:18,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120940617] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:12:18,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:12:18,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-11-06 22:12:18,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132523604] [2023-11-06 22:12:18,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:12:18,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:12:18,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:18,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:12:18,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:12:19,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 736 [2023-11-06 22:12:19,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 60 transitions, 342 flow. Second operand has 14 states, 14 states have (on average 301.2142857142857) internal successors, (4217), 14 states have internal predecessors, (4217), 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) [2023-11-06 22:12:19,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:19,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 736 [2023-11-06 22:12:19,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:21,925 INFO L124 PetriNetUnfolderBase]: 8761/12433 cut-off events. [2023-11-06 22:12:21,925 INFO L125 PetriNetUnfolderBase]: For 11972/11972 co-relation queries the response was YES. [2023-11-06 22:12:21,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34924 conditions, 12433 events. 8761/12433 cut-off events. For 11972/11972 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 65707 event pairs, 3278 based on Foata normal form. 3/11374 useless extension candidates. Maximal degree in co-relation 34906. Up to 5627 conditions per place. [2023-11-06 22:12:22,022 INFO L140 encePairwiseOnDemand]: 727/736 looper letters, 131 selfloop transitions, 17 changer transitions 4/152 dead transitions. [2023-11-06 22:12:22,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 152 transitions, 1096 flow [2023-11-06 22:12:22,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:12:22,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:12:22,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3087 transitions. [2023-11-06 22:12:22,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41942934782608693 [2023-11-06 22:12:22,042 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3087 transitions. [2023-11-06 22:12:22,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3087 transitions. [2023-11-06 22:12:22,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:22,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3087 transitions. [2023-11-06 22:12:22,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 308.7) internal successors, (3087), 10 states have internal predecessors, (3087), 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) [2023-11-06 22:12:22,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 736.0) internal successors, (8096), 11 states have internal predecessors, (8096), 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) [2023-11-06 22:12:22,071 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 736.0) internal successors, (8096), 11 states have internal predecessors, (8096), 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) [2023-11-06 22:12:22,071 INFO L175 Difference]: Start difference. First operand has 71 places, 60 transitions, 342 flow. Second operand 10 states and 3087 transitions. [2023-11-06 22:12:22,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 152 transitions, 1096 flow [2023-11-06 22:12:22,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 152 transitions, 1062 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-11-06 22:12:22,219 INFO L231 Difference]: Finished difference. Result has 78 places, 70 transitions, 450 flow [2023-11-06 22:12:22,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=450, PETRI_PLACES=78, PETRI_TRANSITIONS=70} [2023-11-06 22:12:22,221 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 40 predicate places. [2023-11-06 22:12:22,222 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 70 transitions, 450 flow [2023-11-06 22:12:22,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 301.2142857142857) internal successors, (4217), 14 states have internal predecessors, (4217), 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) [2023-11-06 22:12:22,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:22,224 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:22,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:12:22,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 22:12:22,444 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:12:22,445 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:22,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1634935974, now seen corresponding path program 2 times [2023-11-06 22:12:22,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:22,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818646264] [2023-11-06 22:12:22,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:22,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:22,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:22,816 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:12:22,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:22,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818646264] [2023-11-06 22:12:22,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818646264] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:12:22,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987943513] [2023-11-06 22:12:22,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:12:22,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:12:22,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:12:22,819 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:12:22,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:12:23,024 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:12:23,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:12:23,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:12:23,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:23,327 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:12:23,328 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 93 [2023-11-06 22:12:23,649 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 22:12:23,649 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:12:23,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987943513] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:23,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:12:23,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 14 [2023-11-06 22:12:23,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392402295] [2023-11-06 22:12:23,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:23,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:12:23,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:23,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:12:23,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:12:23,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 736 [2023-11-06 22:12:23,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 70 transitions, 450 flow. Second operand has 8 states, 8 states have (on average 314.5) internal successors, (2516), 8 states have internal predecessors, (2516), 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) [2023-11-06 22:12:23,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:23,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 736 [2023-11-06 22:12:23,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:27,830 INFO L124 PetriNetUnfolderBase]: 13425/19240 cut-off events. [2023-11-06 22:12:27,831 INFO L125 PetriNetUnfolderBase]: For 14241/14241 co-relation queries the response was YES. [2023-11-06 22:12:27,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52661 conditions, 19240 events. 13425/19240 cut-off events. For 14241/14241 co-relation queries the response was YES. Maximal size of possible extension queue 740. Compared 114704 event pairs, 224 based on Foata normal form. 3/15875 useless extension candidates. Maximal degree in co-relation 52640. Up to 10673 conditions per place. [2023-11-06 22:12:27,999 INFO L140 encePairwiseOnDemand]: 727/736 looper letters, 176 selfloop transitions, 13 changer transitions 17/206 dead transitions. [2023-11-06 22:12:27,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 206 transitions, 1468 flow [2023-11-06 22:12:28,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:12:28,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:12:28,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2627 transitions. [2023-11-06 22:12:28,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4461616847826087 [2023-11-06 22:12:28,008 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2627 transitions. [2023-11-06 22:12:28,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2627 transitions. [2023-11-06 22:12:28,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:28,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2627 transitions. [2023-11-06 22:12:28,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 328.375) internal successors, (2627), 8 states have internal predecessors, (2627), 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) [2023-11-06 22:12:28,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 736.0) internal successors, (6624), 9 states have internal predecessors, (6624), 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) [2023-11-06 22:12:28,032 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 736.0) internal successors, (6624), 9 states have internal predecessors, (6624), 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) [2023-11-06 22:12:28,032 INFO L175 Difference]: Start difference. First operand has 78 places, 70 transitions, 450 flow. Second operand 8 states and 2627 transitions. [2023-11-06 22:12:28,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 206 transitions, 1468 flow [2023-11-06 22:12:28,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 206 transitions, 1444 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-11-06 22:12:28,054 INFO L231 Difference]: Finished difference. Result has 88 places, 76 transitions, 504 flow [2023-11-06 22:12:28,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=504, PETRI_PLACES=88, PETRI_TRANSITIONS=76} [2023-11-06 22:12:28,055 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 50 predicate places. [2023-11-06 22:12:28,056 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 76 transitions, 504 flow [2023-11-06 22:12:28,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 314.5) internal successors, (2516), 8 states have internal predecessors, (2516), 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) [2023-11-06 22:12:28,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:28,057 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:28,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:12:28,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:12:28,266 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:12:28,267 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:28,267 INFO L85 PathProgramCache]: Analyzing trace with hash -186165964, now seen corresponding path program 3 times [2023-11-06 22:12:28,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:28,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093979953] [2023-11-06 22:12:28,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:28,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:28,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:28,684 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:12:28,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:28,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093979953] [2023-11-06 22:12:28,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093979953] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:12:28,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431806188] [2023-11-06 22:12:28,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:12:28,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:12:28,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:12:28,688 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:12:28,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:12:28,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-06 22:12:28,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:12:28,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:12:28,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:29,101 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:12:29,102 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 100 [2023-11-06 22:12:29,740 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 22:12:29,741 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:12:29,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431806188] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:29,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:12:29,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 15 [2023-11-06 22:12:29,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980805741] [2023-11-06 22:12:29,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:29,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:12:29,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:29,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:12:29,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:12:30,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 736 [2023-11-06 22:12:30,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 76 transitions, 504 flow. Second operand has 9 states, 9 states have (on average 313.1111111111111) internal successors, (2818), 9 states have internal predecessors, (2818), 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) [2023-11-06 22:12:30,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:30,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 736 [2023-11-06 22:12:30,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:35,869 INFO L124 PetriNetUnfolderBase]: 20121/29197 cut-off events. [2023-11-06 22:12:35,869 INFO L125 PetriNetUnfolderBase]: For 39146/39146 co-relation queries the response was YES. [2023-11-06 22:12:36,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92634 conditions, 29197 events. 20121/29197 cut-off events. For 39146/39146 co-relation queries the response was YES. Maximal size of possible extension queue 1197. Compared 184887 event pairs, 5712 based on Foata normal form. 3/27360 useless extension candidates. Maximal degree in co-relation 92608. Up to 13189 conditions per place. [2023-11-06 22:12:36,170 INFO L140 encePairwiseOnDemand]: 725/736 looper letters, 203 selfloop transitions, 22 changer transitions 18/243 dead transitions. [2023-11-06 22:12:36,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 243 transitions, 1974 flow [2023-11-06 22:12:36,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:12:36,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:12:36,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2929 transitions. [2023-11-06 22:12:36,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44217995169082125 [2023-11-06 22:12:36,179 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2929 transitions. [2023-11-06 22:12:36,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2929 transitions. [2023-11-06 22:12:36,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:36,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2929 transitions. [2023-11-06 22:12:36,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 325.44444444444446) internal successors, (2929), 9 states have internal predecessors, (2929), 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) [2023-11-06 22:12:36,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 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) [2023-11-06 22:12:36,202 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 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) [2023-11-06 22:12:36,203 INFO L175 Difference]: Start difference. First operand has 88 places, 76 transitions, 504 flow. Second operand 9 states and 2929 transitions. [2023-11-06 22:12:36,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 243 transitions, 1974 flow [2023-11-06 22:12:36,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 243 transitions, 1891 flow, removed 11 selfloop flow, removed 3 redundant places. [2023-11-06 22:12:36,410 INFO L231 Difference]: Finished difference. Result has 98 places, 90 transitions, 706 flow [2023-11-06 22:12:36,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=706, PETRI_PLACES=98, PETRI_TRANSITIONS=90} [2023-11-06 22:12:36,411 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 60 predicate places. [2023-11-06 22:12:36,411 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 90 transitions, 706 flow [2023-11-06 22:12:36,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 313.1111111111111) internal successors, (2818), 9 states have internal predecessors, (2818), 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) [2023-11-06 22:12:36,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:36,412 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:36,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:12:36,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 22:12:36,613 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:12:36,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:36,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1873774734, now seen corresponding path program 4 times [2023-11-06 22:12:36,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:36,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843248489] [2023-11-06 22:12:36,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:36,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:36,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:36,983 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:12:36,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:36,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843248489] [2023-11-06 22:12:36,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843248489] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:12:36,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003116449] [2023-11-06 22:12:36,984 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:12:36,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:12:36,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:12:36,986 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:12:37,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:12:37,210 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:12:37,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:12:37,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:12:37,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:37,375 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:12:37,375 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:12:37,501 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:12:37,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003116449] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:12:37,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:12:37,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 15 [2023-11-06 22:12:37,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907889581] [2023-11-06 22:12:37,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:37,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:12:37,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:37,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:12:37,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:12:37,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 736 [2023-11-06 22:12:37,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 90 transitions, 706 flow. Second operand has 7 states, 7 states have (on average 298.0) internal successors, (2086), 7 states have internal predecessors, (2086), 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) [2023-11-06 22:12:37,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:37,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 736 [2023-11-06 22:12:37,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:44,353 INFO L124 PetriNetUnfolderBase]: 21885/31625 cut-off events. [2023-11-06 22:12:44,353 INFO L125 PetriNetUnfolderBase]: For 70790/70790 co-relation queries the response was YES. [2023-11-06 22:12:44,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113719 conditions, 31625 events. 21885/31625 cut-off events. For 70790/70790 co-relation queries the response was YES. Maximal size of possible extension queue 1311. Compared 204281 event pairs, 800 based on Foata normal form. 776/31393 useless extension candidates. Maximal degree in co-relation 113688. Up to 18870 conditions per place. [2023-11-06 22:12:44,965 INFO L140 encePairwiseOnDemand]: 728/736 looper letters, 144 selfloop transitions, 39 changer transitions 1/184 dead transitions. [2023-11-06 22:12:44,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 184 transitions, 1647 flow [2023-11-06 22:12:44,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:12:44,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:12:44,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2748 transitions. [2023-11-06 22:12:44,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4148550724637681 [2023-11-06 22:12:44,973 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2748 transitions. [2023-11-06 22:12:44,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2748 transitions. [2023-11-06 22:12:44,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:44,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2748 transitions. [2023-11-06 22:12:44,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 305.3333333333333) internal successors, (2748), 9 states have internal predecessors, (2748), 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) [2023-11-06 22:12:44,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 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) [2023-11-06 22:12:44,999 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 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) [2023-11-06 22:12:44,999 INFO L175 Difference]: Start difference. First operand has 98 places, 90 transitions, 706 flow. Second operand 9 states and 2748 transitions. [2023-11-06 22:12:45,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 184 transitions, 1647 flow [2023-11-06 22:12:45,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 184 transitions, 1569 flow, removed 28 selfloop flow, removed 3 redundant places. [2023-11-06 22:12:45,450 INFO L231 Difference]: Finished difference. Result has 104 places, 105 transitions, 925 flow [2023-11-06 22:12:45,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=678, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=925, PETRI_PLACES=104, PETRI_TRANSITIONS=105} [2023-11-06 22:12:45,451 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 66 predicate places. [2023-11-06 22:12:45,452 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 105 transitions, 925 flow [2023-11-06 22:12:45,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 298.0) internal successors, (2086), 7 states have internal predecessors, (2086), 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) [2023-11-06 22:12:45,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:45,453 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:45,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:12:45,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 22:12:45,660 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:12:45,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:45,661 INFO L85 PathProgramCache]: Analyzing trace with hash -161520794, now seen corresponding path program 5 times [2023-11-06 22:12:45,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:45,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867664374] [2023-11-06 22:12:45,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:45,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:46,077 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:12:46,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:46,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867664374] [2023-11-06 22:12:46,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867664374] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:12:46,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910384253] [2023-11-06 22:12:46,081 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:12:46,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:12:46,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:12:46,084 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:12:46,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:12:46,331 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:12:46,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:12:46,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:12:46,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:46,534 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:12:46,534 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:12:46,789 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:12:46,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910384253] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:12:46,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:12:46,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 18 [2023-11-06 22:12:46,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66998142] [2023-11-06 22:12:46,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:46,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:12:46,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:12:46,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:12:46,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:12:47,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 736 [2023-11-06 22:12:47,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 105 transitions, 925 flow. Second operand has 8 states, 8 states have (on average 300.625) internal successors, (2405), 8 states have internal predecessors, (2405), 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) [2023-11-06 22:12:47,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:47,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 736 [2023-11-06 22:12:47,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:52,723 INFO L124 PetriNetUnfolderBase]: 24473/35210 cut-off events. [2023-11-06 22:12:52,724 INFO L125 PetriNetUnfolderBase]: For 103420/103420 co-relation queries the response was YES. [2023-11-06 22:12:52,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131295 conditions, 35210 events. 24473/35210 cut-off events. For 103420/103420 co-relation queries the response was YES. Maximal size of possible extension queue 1443. Compared 226942 event pairs, 5808 based on Foata normal form. 1216/35282 useless extension candidates. Maximal degree in co-relation 131263. Up to 24606 conditions per place. [2023-11-06 22:12:53,019 INFO L140 encePairwiseOnDemand]: 728/736 looper letters, 111 selfloop transitions, 31 changer transitions 0/142 dead transitions. [2023-11-06 22:12:53,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 142 transitions, 1459 flow [2023-11-06 22:12:53,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:12:53,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:12:53,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2138 transitions. [2023-11-06 22:12:53,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41498447204968947 [2023-11-06 22:12:53,024 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2138 transitions. [2023-11-06 22:12:53,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2138 transitions. [2023-11-06 22:12:53,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:53,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2138 transitions. [2023-11-06 22:12:53,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 305.42857142857144) internal successors, (2138), 7 states have internal predecessors, (2138), 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) [2023-11-06 22:12:53,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 736.0) internal successors, (5888), 8 states have internal predecessors, (5888), 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) [2023-11-06 22:12:53,035 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 736.0) internal successors, (5888), 8 states have internal predecessors, (5888), 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) [2023-11-06 22:12:53,035 INFO L175 Difference]: Start difference. First operand has 104 places, 105 transitions, 925 flow. Second operand 7 states and 2138 transitions. [2023-11-06 22:12:53,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 142 transitions, 1459 flow [2023-11-06 22:12:53,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 142 transitions, 1412 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-11-06 22:12:53,861 INFO L231 Difference]: Finished difference. Result has 107 places, 107 transitions, 1007 flow [2023-11-06 22:12:53,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=879, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1007, PETRI_PLACES=107, PETRI_TRANSITIONS=107} [2023-11-06 22:12:53,862 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 69 predicate places. [2023-11-06 22:12:53,862 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 107 transitions, 1007 flow [2023-11-06 22:12:53,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 300.625) internal successors, (2405), 8 states have internal predecessors, (2405), 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) [2023-11-06 22:12:53,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:53,862 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:53,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:12:54,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-06 22:12:54,069 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:12:54,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:54,069 INFO L85 PathProgramCache]: Analyzing trace with hash -747634228, now seen corresponding path program 1 times [2023-11-06 22:12:54,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:12:54,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706164037] [2023-11-06 22:12:54,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:54,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:12:54,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:55,689 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:12:55,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:12:55,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706164037] [2023-11-06 22:12:55,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706164037] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:12:55,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943041460] [2023-11-06 22:12:55,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:55,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:12:55,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:12:55,691 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:12:55,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a0eb781-3f0a-4f20-8251-027c92d30b8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 22:12:55,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:55,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-06 22:12:55,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:56,187 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:12:56,279 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:12:56,433 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:12:56,513 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:12:57,035 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 22:12:57,035 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 19 [2023-11-06 22:12:57,123 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:12:57,123 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:12:58,698 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse10 (* |c_thread1Thread1of1ForFork2_~i~0#1| 4))) (let ((.cse4 (+ c_~a1~0.offset .cse10)) (.cse5 (+ c_~a2~0.offset .cse10))) (let ((.cse7 (forall ((~a1~0.base Int) (~a2~0.base Int) (v_ArrVal_642 (Array Int Int))) (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_642))) (let ((.cse8 (select .cse9 ~a2~0.base))) (or (< (select .cse8 c_~a2~0.offset) (select (select .cse9 c_~a3~0.base) c_~a3~0.offset)) (< (select (select .cse9 ~a1~0.base) .cse4) (+ (select .cse8 .cse5) 1)))))))) (and (forall ((~a2~0.base Int) (v_ArrVal_642 (Array Int Int))) (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_642))) (let ((.cse0 (select .cse6 ~a2~0.base)) (.cse1 (select (select .cse6 c_~a3~0.base) c_~a3~0.offset))) (or (< (select .cse0 c_~a2~0.offset) .cse1) (forall ((~a1~0.base Int)) (let ((.cse3 (select .cse6 ~a1~0.base))) (let ((.cse2 (select .cse3 c_~a1~0.offset))) (or (< .cse1 .cse2) (< (+ .cse2 2147483648) .cse1) (< (select .cse3 .cse4) (+ (select .cse0 .cse5) 1)) (= .cse1 .cse2))))))))) (or .cse7 (< 0 c_~n3~0)) (or (< 0 c_~n1~0) .cse7))))) is different from false [2023-11-06 22:12:58,868 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse10 (* |c_thread1Thread1of1ForFork2_~i~0#1| 4))) (let ((.cse4 (+ c_~a1~0.offset .cse10)) (.cse6 (+ c_~a2~0.offset .cse10))) (let ((.cse0 (forall ((v_ArrVal_641 (Array Int Int)) (~a1~0.base Int) (~a2~0.base Int) (v_ArrVal_642 (Array Int Int))) (let ((.cse9 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_641) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_642))) (let ((.cse8 (select .cse9 ~a2~0.base))) (or (< (select .cse8 c_~a2~0.offset) (select (select .cse9 c_~a3~0.base) c_~a3~0.offset)) (< (select (select .cse9 ~a1~0.base) .cse4) (+ 1 (select .cse8 .cse6))))))))) (and (or (< 0 c_~n1~0) .cse0) (or .cse0 (< 0 c_~n3~0)) (forall ((v_ArrVal_641 (Array Int Int)) (~a2~0.base Int) (v_ArrVal_642 (Array Int Int))) (let ((.cse7 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_641) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_642))) (let ((.cse5 (select .cse7 ~a2~0.base)) (.cse2 (select (select .cse7 c_~a3~0.base) c_~a3~0.offset))) (or (forall ((~a1~0.base Int)) (let ((.cse3 (select .cse7 ~a1~0.base))) (let ((.cse1 (select .cse3 c_~a1~0.offset))) (or (= .cse1 .cse2) (< .cse2 .cse1) (< (select .cse3 .cse4) (+ 1 (select .cse5 .cse6))) (< (+ .cse1 2147483648) .cse2))))) (< (select .cse5 c_~a2~0.offset) .cse2))))))))) is different from false [2023-11-06 22:12:59,295 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:12:59,296 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 73 [2023-11-06 22:12:59,376 INFO L322 Elim1Store]: treesize reduction 8, result has 76.5 percent of original size [2023-11-06 22:12:59,378 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 4715 treesize of output 4484 [2023-11-06 22:12:59,751 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:12:59,752 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2219 treesize of output 1987 [2023-11-06 22:12:59,905 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:12:59,906 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1963 treesize of output 1859 [2023-11-06 22:13:00,057 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:13:00,058 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1835 treesize of output 1795