./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/stack_longer-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adf456c-5aeb-4bd5-8db5-07218582b9ee/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adf456c-5aeb-4bd5-8db5-07218582b9ee/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adf456c-5aeb-4bd5-8db5-07218582b9ee/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adf456c-5aeb-4bd5-8db5-07218582b9ee/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack_longer-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adf456c-5aeb-4bd5-8db5-07218582b9ee/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adf456c-5aeb-4bd5-8db5-07218582b9ee/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4351dece6a672e511bbcb86915e62fc8a7361763ad7ab88f2e640b2d00ea50a7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:20:26,389 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:20:26,457 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adf456c-5aeb-4bd5-8db5-07218582b9ee/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:20:26,463 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:20:26,464 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:20:26,490 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:20:26,490 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:20:26,493 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:20:26,494 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:20:26,496 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:20:26,497 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:20:26,499 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:20:26,500 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:20:26,503 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:20:26,503 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:20:26,504 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:20:26,505 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:20:26,508 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:20:26,508 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:20:26,509 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:20:26,511 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:20:26,512 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:20:26,513 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:20:26,513 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:20:26,513 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:20:26,514 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:20:26,515 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:20:26,515 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:20:26,516 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:20:26,516 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:20:26,517 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:20:26,518 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:20:26,518 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:20:26,519 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:20:26,519 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:20:26,519 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:20:26,520 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:20:26,520 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:20:26,520 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:20:26,520 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_6adf456c-5aeb-4bd5-8db5-07218582b9ee/bin/uautomizer-verify-uTZkv6EMXl/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adf456c-5aeb-4bd5-8db5-07218582b9ee/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4351dece6a672e511bbcb86915e62fc8a7361763ad7ab88f2e640b2d00ea50a7 [2023-11-12 02:20:26,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:20:26,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:20:26,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:20:26,852 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:20:26,853 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:20:26,855 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adf456c-5aeb-4bd5-8db5-07218582b9ee/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread/stack_longer-1.i [2023-11-12 02:20:30,147 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:20:30,422 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:20:30,423 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adf456c-5aeb-4bd5-8db5-07218582b9ee/sv-benchmarks/c/pthread/stack_longer-1.i [2023-11-12 02:20:30,444 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adf456c-5aeb-4bd5-8db5-07218582b9ee/bin/uautomizer-verify-uTZkv6EMXl/data/f8b6bfa7e/a1d9f2ed0db14af5802ac4cfdba0103b/FLAG3a04b76b8 [2023-11-12 02:20:30,461 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adf456c-5aeb-4bd5-8db5-07218582b9ee/bin/uautomizer-verify-uTZkv6EMXl/data/f8b6bfa7e/a1d9f2ed0db14af5802ac4cfdba0103b [2023-11-12 02:20:30,464 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:20:30,466 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:20:30,468 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:20:30,468 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:20:30,475 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:20:30,476 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:20:30" (1/1) ... [2023-11-12 02:20:30,477 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c16689d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:30, skipping insertion in model container [2023-11-12 02:20:30,478 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:20:30" (1/1) ... [2023-11-12 02:20:30,532 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:20:31,172 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_6adf456c-5aeb-4bd5-8db5-07218582b9ee/sv-benchmarks/c/pthread/stack_longer-1.i[41527,41540] [2023-11-12 02:20:31,228 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:20:31,244 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:20:31,318 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_6adf456c-5aeb-4bd5-8db5-07218582b9ee/sv-benchmarks/c/pthread/stack_longer-1.i[41527,41540] [2023-11-12 02:20:31,329 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:20:31,410 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:20:31,411 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:31 WrapperNode [2023-11-12 02:20:31,411 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:20:31,413 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:20:31,413 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:20:31,414 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:20:31,422 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:31" (1/1) ... [2023-11-12 02:20:31,455 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:31" (1/1) ... [2023-11-12 02:20:31,525 INFO L138 Inliner]: procedures = 277, calls = 39, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 155 [2023-11-12 02:20:31,525 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:20:31,531 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:20:31,534 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:20:31,534 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:20:31,544 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:31" (1/1) ... [2023-11-12 02:20:31,545 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:31" (1/1) ... [2023-11-12 02:20:31,549 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:31" (1/1) ... [2023-11-12 02:20:31,550 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:31" (1/1) ... [2023-11-12 02:20:31,559 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:31" (1/1) ... [2023-11-12 02:20:31,563 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:31" (1/1) ... [2023-11-12 02:20:31,566 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:31" (1/1) ... [2023-11-12 02:20:31,568 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:31" (1/1) ... [2023-11-12 02:20:31,572 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:20:31,573 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:20:31,573 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:20:31,573 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:20:31,577 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:31" (1/1) ... [2023-11-12 02:20:31,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:20:31,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adf456c-5aeb-4bd5-8db5-07218582b9ee/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:31,626 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adf456c-5aeb-4bd5-8db5-07218582b9ee/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:20:31,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adf456c-5aeb-4bd5-8db5-07218582b9ee/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:20:31,659 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-12 02:20:31,659 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-12 02:20:31,660 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-12 02:20:31,660 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-12 02:20:31,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:20:31,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:20:31,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:20:31,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:20:31,660 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-12 02:20:31,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:20:31,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:20:31,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:20:31,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:20:31,663 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:20:31,835 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:20:31,837 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:20:32,167 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:20:32,177 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:20:32,177 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 02:20:32,180 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:20:32 BoogieIcfgContainer [2023-11-12 02:20:32,184 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:20:32,187 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:20:32,187 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:20:32,191 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:20:32,191 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:20:30" (1/3) ... [2023-11-12 02:20:32,195 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@145110e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:20:32, skipping insertion in model container [2023-11-12 02:20:32,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:31" (2/3) ... [2023-11-12 02:20:32,196 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@145110e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:20:32, skipping insertion in model container [2023-11-12 02:20:32,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:20:32" (3/3) ... [2023-11-12 02:20:32,197 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-1.i [2023-11-12 02:20:32,208 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:20:32,219 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:20:32,219 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-12 02:20:32,219 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:20:32,330 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 02:20:32,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 166 transitions, 346 flow [2023-11-12 02:20:32,470 INFO L124 PetriNetUnfolderBase]: 10/164 cut-off events. [2023-11-12 02:20:32,470 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:20:32,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 164 events. 10/164 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 423 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 126. Up to 3 conditions per place. [2023-11-12 02:20:32,478 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 166 transitions, 346 flow [2023-11-12 02:20:32,484 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 154 transitions, 317 flow [2023-11-12 02:20:32,488 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:20:32,498 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 151 places, 154 transitions, 317 flow [2023-11-12 02:20:32,501 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 151 places, 154 transitions, 317 flow [2023-11-12 02:20:32,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 154 transitions, 317 flow [2023-11-12 02:20:32,544 INFO L124 PetriNetUnfolderBase]: 10/154 cut-off events. [2023-11-12 02:20:32,544 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:20:32,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 154 events. 10/154 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 339 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 126. Up to 3 conditions per place. [2023-11-12 02:20:32,553 INFO L119 LiptonReduction]: Number of co-enabled transitions 8340 [2023-11-12 02:20:37,238 INFO L134 LiptonReduction]: Checked pairs total: 10493 [2023-11-12 02:20:37,241 INFO L136 LiptonReduction]: Total number of compositions: 146 [2023-11-12 02:20:37,267 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:20:37,279 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2342b1cc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:20:37,279 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-12 02:20:37,302 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:20:37,302 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-11-12 02:20:37,302 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:20:37,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:37,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:20:37,304 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:20:37,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:37,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1613786047, now seen corresponding path program 1 times [2023-11-12 02:20:37,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:37,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553671247] [2023-11-12 02:20:37,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:37,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:37,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:37,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:37,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:37,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553671247] [2023-11-12 02:20:37,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553671247] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:37,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:37,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:20:37,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972213970] [2023-11-12 02:20:37,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:37,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:20:37,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:37,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:20:37,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:20:37,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 312 [2023-11-12 02:20:37,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:37,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:37,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 312 [2023-11-12 02:20:37,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:38,128 INFO L124 PetriNetUnfolderBase]: 717/1174 cut-off events. [2023-11-12 02:20:38,130 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2023-11-12 02:20:38,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2392 conditions, 1174 events. 717/1174 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4562 event pairs, 263 based on Foata normal form. 0/958 useless extension candidates. Maximal degree in co-relation 2208. Up to 697 conditions per place. [2023-11-12 02:20:38,147 INFO L140 encePairwiseOnDemand]: 307/312 looper letters, 52 selfloop transitions, 3 changer transitions 0/56 dead transitions. [2023-11-12 02:20:38,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 56 transitions, 237 flow [2023-11-12 02:20:38,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:20:38,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:20:38,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 510 transitions. [2023-11-12 02:20:38,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5448717948717948 [2023-11-12 02:20:38,170 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 510 transitions. [2023-11-12 02:20:38,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 510 transitions. [2023-11-12 02:20:38,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:38,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 510 transitions. [2023-11-12 02:20:38,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:38,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:38,188 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:38,190 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 75 flow. Second operand 3 states and 510 transitions. [2023-11-12 02:20:38,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 56 transitions, 237 flow [2023-11-12 02:20:38,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 56 transitions, 229 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-12 02:20:38,199 INFO L231 Difference]: Finished difference. Result has 36 places, 35 transitions, 94 flow [2023-11-12 02:20:38,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=36, PETRI_TRANSITIONS=35} [2023-11-12 02:20:38,205 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2023-11-12 02:20:38,205 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 35 transitions, 94 flow [2023-11-12 02:20:38,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:38,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:38,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:38,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:20:38,207 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:20:38,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:38,208 INFO L85 PathProgramCache]: Analyzing trace with hash 765132466, now seen corresponding path program 1 times [2023-11-12 02:20:38,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:38,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326727282] [2023-11-12 02:20:38,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:38,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:38,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:38,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:38,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:38,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326727282] [2023-11-12 02:20:38,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326727282] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:38,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:38,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:20:38,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016053800] [2023-11-12 02:20:38,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:38,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:20:38,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:38,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:20:38,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:20:38,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 312 [2023-11-12 02:20:38,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:38,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:38,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 312 [2023-11-12 02:20:38,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:38,660 INFO L124 PetriNetUnfolderBase]: 803/1337 cut-off events. [2023-11-12 02:20:38,660 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2023-11-12 02:20:38,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2870 conditions, 1337 events. 803/1337 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5491 event pairs, 365 based on Foata normal form. 22/1155 useless extension candidates. Maximal degree in co-relation 2605. Up to 1059 conditions per place. [2023-11-12 02:20:38,671 INFO L140 encePairwiseOnDemand]: 309/312 looper letters, 47 selfloop transitions, 2 changer transitions 3/53 dead transitions. [2023-11-12 02:20:38,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 53 transitions, 241 flow [2023-11-12 02:20:38,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:20:38,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:20:38,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 507 transitions. [2023-11-12 02:20:38,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2023-11-12 02:20:38,677 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 507 transitions. [2023-11-12 02:20:38,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 507 transitions. [2023-11-12 02:20:38,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:38,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 507 transitions. [2023-11-12 02:20:38,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:38,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:38,686 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:38,686 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 94 flow. Second operand 3 states and 507 transitions. [2023-11-12 02:20:38,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 53 transitions, 241 flow [2023-11-12 02:20:38,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 53 transitions, 233 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:20:38,694 INFO L231 Difference]: Finished difference. Result has 37 places, 36 transitions, 100 flow [2023-11-12 02:20:38,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=37, PETRI_TRANSITIONS=36} [2023-11-12 02:20:38,696 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2023-11-12 02:20:38,697 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 36 transitions, 100 flow [2023-11-12 02:20:38,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:38,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:38,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:38,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:20:38,704 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:20:38,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:38,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1098508244, now seen corresponding path program 1 times [2023-11-12 02:20:38,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:38,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533285999] [2023-11-12 02:20:38,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:38,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:38,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:38,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:38,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:38,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533285999] [2023-11-12 02:20:38,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533285999] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:38,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:38,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:20:38,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368329025] [2023-11-12 02:20:38,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:38,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:20:38,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:38,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:20:38,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:20:38,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 312 [2023-11-12 02:20:38,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:38,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:38,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 312 [2023-11-12 02:20:38,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:39,109 INFO L124 PetriNetUnfolderBase]: 848/1411 cut-off events. [2023-11-12 02:20:39,109 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2023-11-12 02:20:39,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3118 conditions, 1411 events. 848/1411 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5954 event pairs, 597 based on Foata normal form. 46/1269 useless extension candidates. Maximal degree in co-relation 2846. Up to 1259 conditions per place. [2023-11-12 02:20:39,121 INFO L140 encePairwiseOnDemand]: 309/312 looper letters, 49 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2023-11-12 02:20:39,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 54 transitions, 254 flow [2023-11-12 02:20:39,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:20:39,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:20:39,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 503 transitions. [2023-11-12 02:20:39,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5373931623931624 [2023-11-12 02:20:39,125 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 503 transitions. [2023-11-12 02:20:39,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 503 transitions. [2023-11-12 02:20:39,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:39,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 503 transitions. [2023-11-12 02:20:39,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:39,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:39,132 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:39,133 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 100 flow. Second operand 3 states and 503 transitions. [2023-11-12 02:20:39,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 54 transitions, 254 flow [2023-11-12 02:20:39,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 54 transitions, 252 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:20:39,136 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 118 flow [2023-11-12 02:20:39,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2023-11-12 02:20:39,138 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 4 predicate places. [2023-11-12 02:20:39,138 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 118 flow [2023-11-12 02:20:39,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:39,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:39,139 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:39,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:20:39,140 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:20:39,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:39,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1551755839, now seen corresponding path program 1 times [2023-11-12 02:20:39,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:39,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723118702] [2023-11-12 02:20:39,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:39,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:39,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:39,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:39,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:39,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723118702] [2023-11-12 02:20:39,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723118702] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:20:39,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364379368] [2023-11-12 02:20:39,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:39,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:20:39,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adf456c-5aeb-4bd5-8db5-07218582b9ee/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:39,334 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adf456c-5aeb-4bd5-8db5-07218582b9ee/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:20:39,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adf456c-5aeb-4bd5-8db5-07218582b9ee/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:20:39,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:39,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:20:39,468 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:20:39,532 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:39,532 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:20:39,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:39,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364379368] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:20:39,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:20:39,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-12 02:20:39,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743714473] [2023-11-12 02:20:39,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:20:39,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 02:20:39,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:39,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 02:20:39,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:20:39,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 312 [2023-11-12 02:20:39,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 118 flow. Second operand has 10 states, 10 states have (on average 150.6) internal successors, (1506), 10 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:39,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:39,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 312 [2023-11-12 02:20:39,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:40,419 INFO L124 PetriNetUnfolderBase]: 1613/2678 cut-off events. [2023-11-12 02:20:40,419 INFO L125 PetriNetUnfolderBase]: For 834/834 co-relation queries the response was YES. [2023-11-12 02:20:40,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6291 conditions, 2678 events. 1613/2678 cut-off events. For 834/834 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 12512 event pairs, 303 based on Foata normal form. 44/2356 useless extension candidates. Maximal degree in co-relation 5820. Up to 816 conditions per place. [2023-11-12 02:20:40,442 INFO L140 encePairwiseOnDemand]: 306/312 looper letters, 142 selfloop transitions, 17 changer transitions 0/160 dead transitions. [2023-11-12 02:20:40,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 160 transitions, 775 flow [2023-11-12 02:20:40,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:20:40,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-12 02:20:40,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1481 transitions. [2023-11-12 02:20:40,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5274216524216524 [2023-11-12 02:20:40,449 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1481 transitions. [2023-11-12 02:20:40,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1481 transitions. [2023-11-12 02:20:40,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:40,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1481 transitions. [2023-11-12 02:20:40,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 164.55555555555554) internal successors, (1481), 9 states have internal predecessors, (1481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:40,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 312.0) internal successors, (3120), 10 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:40,466 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 312.0) internal successors, (3120), 10 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:40,466 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 118 flow. Second operand 9 states and 1481 transitions. [2023-11-12 02:20:40,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 160 transitions, 775 flow [2023-11-12 02:20:40,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 160 transitions, 763 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:20:40,475 INFO L231 Difference]: Finished difference. Result has 49 places, 52 transitions, 236 flow [2023-11-12 02:20:40,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=236, PETRI_PLACES=49, PETRI_TRANSITIONS=52} [2023-11-12 02:20:40,476 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 14 predicate places. [2023-11-12 02:20:40,476 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 52 transitions, 236 flow [2023-11-12 02:20:40,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 150.6) internal successors, (1506), 10 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:40,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:40,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:40,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adf456c-5aeb-4bd5-8db5-07218582b9ee/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-12 02:20:40,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adf456c-5aeb-4bd5-8db5-07218582b9ee/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:20:40,685 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:20:40,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:40,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1708069761, now seen corresponding path program 1 times [2023-11-12 02:20:40,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:40,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392993399] [2023-11-12 02:20:40,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:40,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:40,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:40,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:40,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:40,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392993399] [2023-11-12 02:20:40,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392993399] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:40,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:40,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:20:40,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308294700] [2023-11-12 02:20:40,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:40,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:20:40,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:40,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:20:40,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:20:40,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 312 [2023-11-12 02:20:40,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 52 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:40,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:40,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 312 [2023-11-12 02:20:40,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:41,111 INFO L124 PetriNetUnfolderBase]: 595/1112 cut-off events. [2023-11-12 02:20:41,111 INFO L125 PetriNetUnfolderBase]: For 238/238 co-relation queries the response was YES. [2023-11-12 02:20:41,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2697 conditions, 1112 events. 595/1112 cut-off events. For 238/238 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 4714 event pairs, 98 based on Foata normal form. 0/1032 useless extension candidates. Maximal degree in co-relation 2198. Up to 831 conditions per place. [2023-11-12 02:20:41,121 INFO L140 encePairwiseOnDemand]: 307/312 looper letters, 48 selfloop transitions, 5 changer transitions 0/54 dead transitions. [2023-11-12 02:20:41,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 54 transitions, 316 flow [2023-11-12 02:20:41,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:20:41,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:20:41,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 490 transitions. [2023-11-12 02:20:41,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5235042735042735 [2023-11-12 02:20:41,125 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 490 transitions. [2023-11-12 02:20:41,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 490 transitions. [2023-11-12 02:20:41,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:41,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 490 transitions. [2023-11-12 02:20:41,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:41,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:41,132 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:41,133 INFO L175 Difference]: Start difference. First operand has 49 places, 52 transitions, 236 flow. Second operand 3 states and 490 transitions. [2023-11-12 02:20:41,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 54 transitions, 316 flow [2023-11-12 02:20:41,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 54 transitions, 314 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-12 02:20:41,140 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 197 flow [2023-11-12 02:20:41,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=197, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2023-11-12 02:20:41,143 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 14 predicate places. [2023-11-12 02:20:41,143 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 197 flow [2023-11-12 02:20:41,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:41,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:41,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:41,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:20:41,144 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:20:41,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:41,145 INFO L85 PathProgramCache]: Analyzing trace with hash -607949604, now seen corresponding path program 1 times [2023-11-12 02:20:41,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:41,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587531882] [2023-11-12 02:20:41,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:41,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:41,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:41,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:41,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:41,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587531882] [2023-11-12 02:20:41,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587531882] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:41,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:41,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:20:41,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720641513] [2023-11-12 02:20:41,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:41,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:20:41,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:41,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:20:41,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:20:41,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 312 [2023-11-12 02:20:41,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 197 flow. Second operand has 5 states, 5 states have (on average 150.6) internal successors, (753), 5 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:41,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:41,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 312 [2023-11-12 02:20:41,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:41,757 INFO L124 PetriNetUnfolderBase]: 697/1296 cut-off events. [2023-11-12 02:20:41,757 INFO L125 PetriNetUnfolderBase]: For 395/395 co-relation queries the response was YES. [2023-11-12 02:20:41,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3296 conditions, 1296 events. 697/1296 cut-off events. For 395/395 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 5402 event pairs, 191 based on Foata normal form. 12/1308 useless extension candidates. Maximal degree in co-relation 2676. Up to 501 conditions per place. [2023-11-12 02:20:41,770 INFO L140 encePairwiseOnDemand]: 305/312 looper letters, 74 selfloop transitions, 12 changer transitions 0/87 dead transitions. [2023-11-12 02:20:41,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 87 transitions, 497 flow [2023-11-12 02:20:41,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:20:41,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:20:41,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 814 transitions. [2023-11-12 02:20:41,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217948717948718 [2023-11-12 02:20:41,775 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 814 transitions. [2023-11-12 02:20:41,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 814 transitions. [2023-11-12 02:20:41,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:41,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 814 transitions. [2023-11-12 02:20:41,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 162.8) internal successors, (814), 5 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:41,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 312.0) internal successors, (1872), 6 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:41,784 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 312.0) internal successors, (1872), 6 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:41,785 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 197 flow. Second operand 5 states and 814 transitions. [2023-11-12 02:20:41,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 87 transitions, 497 flow [2023-11-12 02:20:41,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 87 transitions, 484 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:20:41,792 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 252 flow [2023-11-12 02:20:41,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=252, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2023-11-12 02:20:41,796 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 19 predicate places. [2023-11-12 02:20:41,796 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 252 flow [2023-11-12 02:20:41,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 150.6) internal successors, (753), 5 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:41,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:41,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:41,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:20:41,797 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:20:41,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:41,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1083540311, now seen corresponding path program 1 times [2023-11-12 02:20:41,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:41,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001634164] [2023-11-12 02:20:41,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:41,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:41,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:42,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:42,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:42,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001634164] [2023-11-12 02:20:42,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001634164] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:42,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:42,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-12 02:20:42,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492466021] [2023-11-12 02:20:42,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:42,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-12 02:20:42,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:42,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-12 02:20:42,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:20:43,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 312 [2023-11-12 02:20:43,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 252 flow. Second operand has 11 states, 11 states have (on average 129.0) internal successors, (1419), 11 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:43,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:43,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 312 [2023-11-12 02:20:43,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:44,309 INFO L124 PetriNetUnfolderBase]: 1015/1885 cut-off events. [2023-11-12 02:20:44,310 INFO L125 PetriNetUnfolderBase]: For 1109/1109 co-relation queries the response was YES. [2023-11-12 02:20:44,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4878 conditions, 1885 events. 1015/1885 cut-off events. For 1109/1109 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 9064 event pairs, 285 based on Foata normal form. 0/1867 useless extension candidates. Maximal degree in co-relation 2984. Up to 1137 conditions per place. [2023-11-12 02:20:44,329 INFO L140 encePairwiseOnDemand]: 301/312 looper letters, 101 selfloop transitions, 13 changer transitions 3/118 dead transitions. [2023-11-12 02:20:44,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 118 transitions, 728 flow [2023-11-12 02:20:44,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:20:44,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-12 02:20:44,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1242 transitions. [2023-11-12 02:20:44,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4423076923076923 [2023-11-12 02:20:44,336 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1242 transitions. [2023-11-12 02:20:44,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1242 transitions. [2023-11-12 02:20:44,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:44,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1242 transitions. [2023-11-12 02:20:44,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 138.0) internal successors, (1242), 9 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:44,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 312.0) internal successors, (3120), 10 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:44,351 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 312.0) internal successors, (3120), 10 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:44,351 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 252 flow. Second operand 9 states and 1242 transitions. [2023-11-12 02:20:44,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 118 transitions, 728 flow [2023-11-12 02:20:44,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 118 transitions, 718 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:20:44,360 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 364 flow [2023-11-12 02:20:44,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=364, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2023-11-12 02:20:44,361 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 31 predicate places. [2023-11-12 02:20:44,361 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 364 flow [2023-11-12 02:20:44,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 129.0) internal successors, (1419), 11 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:44,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:44,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:44,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:20:44,363 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:20:44,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:44,364 INFO L85 PathProgramCache]: Analyzing trace with hash -976419637, now seen corresponding path program 2 times [2023-11-12 02:20:44,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:44,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483064874] [2023-11-12 02:20:44,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:44,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:45,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:45,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:45,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483064874] [2023-11-12 02:20:45,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483064874] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:45,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:45,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-12 02:20:45,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991299398] [2023-11-12 02:20:45,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:45,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-12 02:20:45,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:45,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-12 02:20:45,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:20:45,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 312 [2023-11-12 02:20:45,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 364 flow. Second operand has 11 states, 11 states have (on average 129.0) internal successors, (1419), 11 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:45,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:45,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 312 [2023-11-12 02:20:45,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:47,112 INFO L124 PetriNetUnfolderBase]: 1283/2384 cut-off events. [2023-11-12 02:20:47,112 INFO L125 PetriNetUnfolderBase]: For 1734/1734 co-relation queries the response was YES. [2023-11-12 02:20:47,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6698 conditions, 2384 events. 1283/2384 cut-off events. For 1734/1734 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 11784 event pairs, 401 based on Foata normal form. 0/2360 useless extension candidates. Maximal degree in co-relation 4370. Up to 1056 conditions per place. [2023-11-12 02:20:47,139 INFO L140 encePairwiseOnDemand]: 302/312 looper letters, 101 selfloop transitions, 20 changer transitions 3/125 dead transitions. [2023-11-12 02:20:47,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 125 transitions, 865 flow [2023-11-12 02:20:47,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:20:47,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-12 02:20:47,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1242 transitions. [2023-11-12 02:20:47,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4423076923076923 [2023-11-12 02:20:47,147 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1242 transitions. [2023-11-12 02:20:47,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1242 transitions. [2023-11-12 02:20:47,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:47,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1242 transitions. [2023-11-12 02:20:47,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 138.0) internal successors, (1242), 9 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:47,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 312.0) internal successors, (3120), 10 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:47,166 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 312.0) internal successors, (3120), 10 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:47,166 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 364 flow. Second operand 9 states and 1242 transitions. [2023-11-12 02:20:47,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 125 transitions, 865 flow [2023-11-12 02:20:47,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 125 transitions, 865 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:20:47,178 INFO L231 Difference]: Finished difference. Result has 78 places, 67 transitions, 507 flow [2023-11-12 02:20:47,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=507, PETRI_PLACES=78, PETRI_TRANSITIONS=67} [2023-11-12 02:20:47,181 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 43 predicate places. [2023-11-12 02:20:47,182 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 67 transitions, 507 flow [2023-11-12 02:20:47,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 129.0) internal successors, (1419), 11 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:47,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:47,183 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] [2023-11-12 02:20:47,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:20:47,187 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:20:47,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:47,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1032810912, now seen corresponding path program 1 times [2023-11-12 02:20:47,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:47,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902729999] [2023-11-12 02:20:47,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:47,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:47,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:47,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:47,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:47,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902729999] [2023-11-12 02:20:47,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902729999] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:20:47,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312315205] [2023-11-12 02:20:47,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:47,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:20:47,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adf456c-5aeb-4bd5-8db5-07218582b9ee/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:47,365 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adf456c-5aeb-4bd5-8db5-07218582b9ee/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:20:47,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adf456c-5aeb-4bd5-8db5-07218582b9ee/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:20:47,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:47,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:20:47,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:20:47,589 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:20:47,589 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:20:47,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312315205] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:47,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:20:47,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2023-11-12 02:20:47,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466939336] [2023-11-12 02:20:47,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:47,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:20:47,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:47,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:20:47,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:20:47,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 312 [2023-11-12 02:20:47,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 67 transitions, 507 flow. Second operand has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:47,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:47,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 312 [2023-11-12 02:20:47,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:48,240 INFO L124 PetriNetUnfolderBase]: 1327/2481 cut-off events. [2023-11-12 02:20:48,240 INFO L125 PetriNetUnfolderBase]: For 2857/2857 co-relation queries the response was YES. [2023-11-12 02:20:48,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7469 conditions, 2481 events. 1327/2481 cut-off events. For 2857/2857 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 11990 event pairs, 496 based on Foata normal form. 16/2467 useless extension candidates. Maximal degree in co-relation 5300. Up to 944 conditions per place. [2023-11-12 02:20:48,268 INFO L140 encePairwiseOnDemand]: 305/312 looper letters, 118 selfloop transitions, 15 changer transitions 0/134 dead transitions. [2023-11-12 02:20:48,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 134 transitions, 1094 flow [2023-11-12 02:20:48,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:20:48,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:20:48,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1096 transitions. [2023-11-12 02:20:48,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5018315018315018 [2023-11-12 02:20:48,274 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1096 transitions. [2023-11-12 02:20:48,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1096 transitions. [2023-11-12 02:20:48,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:48,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1096 transitions. [2023-11-12 02:20:48,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 156.57142857142858) internal successors, (1096), 7 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:48,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 312.0) internal successors, (2496), 8 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:48,286 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 312.0) internal successors, (2496), 8 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:48,286 INFO L175 Difference]: Start difference. First operand has 78 places, 67 transitions, 507 flow. Second operand 7 states and 1096 transitions. [2023-11-12 02:20:48,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 134 transitions, 1094 flow [2023-11-12 02:20:48,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 134 transitions, 1053 flow, removed 15 selfloop flow, removed 4 redundant places. [2023-11-12 02:20:48,306 INFO L231 Difference]: Finished difference. Result has 82 places, 76 transitions, 612 flow [2023-11-12 02:20:48,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=612, PETRI_PLACES=82, PETRI_TRANSITIONS=76} [2023-11-12 02:20:48,308 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 47 predicate places. [2023-11-12 02:20:48,308 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 76 transitions, 612 flow [2023-11-12 02:20:48,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:48,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:48,310 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:48,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adf456c-5aeb-4bd5-8db5-07218582b9ee/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:20:48,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adf456c-5aeb-4bd5-8db5-07218582b9ee/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-12 02:20:48,516 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:20:48,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:48,517 INFO L85 PathProgramCache]: Analyzing trace with hash 757548209, now seen corresponding path program 1 times [2023-11-12 02:20:48,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:48,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627951840] [2023-11-12 02:20:48,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:48,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:48,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:20:48,560 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:20:48,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:20:48,661 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:20:48,661 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:20:48,663 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-11-12 02:20:48,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 6 remaining) [2023-11-12 02:20:48,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-11-12 02:20:48,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-11-12 02:20:48,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-11-12 02:20:48,666 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-11-12 02:20:48,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:20:48,667 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:48,674 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-12 02:20:48,674 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 02:20:48,757 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre46 could not be translated [2023-11-12 02:20:48,759 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre48 could not be translated [2023-11-12 02:20:48,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 02:20:48 BasicIcfg [2023-11-12 02:20:48,778 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 02:20:48,779 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 02:20:48,779 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 02:20:48,779 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 02:20:48,780 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:20:32" (3/4) ... [2023-11-12 02:20:48,781 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-12 02:20:48,819 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre46 could not be translated [2023-11-12 02:20:48,822 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre48 could not be translated [2023-11-12 02:20:48,882 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adf456c-5aeb-4bd5-8db5-07218582b9ee/bin/uautomizer-verify-uTZkv6EMXl/witness.graphml [2023-11-12 02:20:48,882 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 02:20:48,883 INFO L158 Benchmark]: Toolchain (without parser) took 18416.52ms. Allocated memory was 169.9MB in the beginning and 247.5MB in the end (delta: 77.6MB). Free memory was 122.2MB in the beginning and 92.4MB in the end (delta: 29.8MB). Peak memory consumption was 108.1MB. Max. memory is 16.1GB. [2023-11-12 02:20:48,883 INFO L158 Benchmark]: CDTParser took 0.58ms. Allocated memory is still 117.4MB. Free memory is still 65.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:20:48,883 INFO L158 Benchmark]: CACSL2BoogieTranslator took 944.59ms. Allocated memory is still 169.9MB. Free memory was 122.2MB in the beginning and 92.9MB in the end (delta: 29.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-12 02:20:48,884 INFO L158 Benchmark]: Boogie Procedure Inliner took 117.73ms. Allocated memory is still 169.9MB. Free memory was 92.9MB in the beginning and 90.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:20:48,884 INFO L158 Benchmark]: Boogie Preprocessor took 40.72ms. Allocated memory is still 169.9MB. Free memory was 90.1MB in the beginning and 88.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:20:48,884 INFO L158 Benchmark]: RCFGBuilder took 611.13ms. Allocated memory is still 169.9MB. Free memory was 88.7MB in the beginning and 131.2MB in the end (delta: -42.5MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. [2023-11-12 02:20:48,885 INFO L158 Benchmark]: TraceAbstraction took 16591.24ms. Allocated memory was 169.9MB in the beginning and 247.5MB in the end (delta: 77.6MB). Free memory was 130.2MB in the beginning and 100.8MB in the end (delta: 29.4MB). Peak memory consumption was 105.9MB. Max. memory is 16.1GB. [2023-11-12 02:20:48,885 INFO L158 Benchmark]: Witness Printer took 103.42ms. Allocated memory is still 247.5MB. Free memory was 100.8MB in the beginning and 92.4MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-12 02:20:48,887 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58ms. Allocated memory is still 117.4MB. Free memory is still 65.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 944.59ms. Allocated memory is still 169.9MB. Free memory was 122.2MB in the beginning and 92.9MB in the end (delta: 29.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 117.73ms. Allocated memory is still 169.9MB. Free memory was 92.9MB in the beginning and 90.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.72ms. Allocated memory is still 169.9MB. Free memory was 90.1MB in the beginning and 88.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 611.13ms. Allocated memory is still 169.9MB. Free memory was 88.7MB in the beginning and 131.2MB in the end (delta: -42.5MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. * TraceAbstraction took 16591.24ms. Allocated memory was 169.9MB in the beginning and 247.5MB in the end (delta: 77.6MB). Free memory was 130.2MB in the beginning and 100.8MB in the end (delta: 29.4MB). Peak memory consumption was 105.9MB. Max. memory is 16.1GB. * Witness Printer took 103.42ms. Allocated memory is still 247.5MB. Free memory was 100.8MB in the beginning and 92.4MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre46 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre48 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre46 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre48 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.7s, 151 PlacesBefore, 35 PlacesAfterwards, 154 TransitionsBefore, 33 TransitionsAfterwards, 8340 CoEnabledTransitionPairs, 5 FixpointIterations, 25 TrivialSequentialCompositions, 95 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 21 ConcurrentYvCompositions, 5 ChoiceCompositions, 146 TotalNumberOfCompositions, 10493 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8156, independent: 7994, independent conditional: 0, independent unconditional: 7994, dependent: 162, dependent conditional: 0, dependent unconditional: 162, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4744, independent: 4688, independent conditional: 0, independent unconditional: 4688, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 8156, independent: 3306, independent conditional: 0, independent unconditional: 3306, dependent: 106, dependent conditional: 0, dependent unconditional: 106, unknown: 4744, unknown conditional: 0, unknown unconditional: 4744] , Statistics on independence cache: Total cache size (in pairs): 198, Positive cache size: 181, Positive conditional cache size: 0, Positive unconditional cache size: 181, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 940]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L935] 0 static int top=0; [L936] 0 static unsigned int arr[(400)]; [L937] 0 pthread_mutex_t m; [L938] 0 _Bool flag=(0); [L1019] 0 pthread_t id1, id2; [L1021] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arr={3:0}, flag=0, id1={7:0}, id2={5:0}, m={4:0}, top=0] [L988] 1 int i; [L989] 1 unsigned int tmp; [L990] 1 i=0 VAL [arg={0:0}, arg={0:0}, arr={3:0}, flag=0, i=0, m={4:0}, top=0] [L1022] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arr={3:0}, flag=0, id1={7:0}, id2={5:0}, m={4:0}, top=0] [L990] COND TRUE 1 i<(400) [L993] 1 tmp = __VERIFIER_nondet_uint() [L994] CALL 1 assume_abort_if_not(tmp < (400)) [L23] COND FALSE 1 !(!cond) [L994] RET 1 assume_abort_if_not(tmp < (400)) [L995] CALL, EXPR 1 push(arr,tmp) [L1004] 2 int i; [L1005] 2 i=0 VAL [arg={0:0}, arg={0:0}, arr={3:0}, flag=0, i=0, m={4:0}, top=0] [L960] COND FALSE 1 !(top==(400)) [L967] CALL, EXPR 1 get_top() [L952] 1 return top; [L967] RET, EXPR 1 get_top() [L967] 1 stack[get_top()] = x [L968] CALL 1 inc_top() [L944] 1 top++ [L968] RET 1 inc_top() [L970] 1 return 0; [L995] RET, EXPR 1 push(arr,tmp) [L995] COND FALSE 1 !(push(arr,tmp)==(-1)) [L997] 1 flag=(1) VAL [arg={0:0}, arg={0:0}, arr={3:0}, flag=1, i=0, m={4:0}, tmp=399, top=1] [L990] 1 i++ VAL [arg={0:0}, arg={0:0}, arr={3:0}, flag=1, i=1, m={4:0}, tmp=399, top=1] [L1005] COND TRUE 2 i<(400) [L1008] COND TRUE 2 \read(flag) [L1010] CALL, EXPR 2 pop(arr) [L974] CALL, EXPR 2 get_top() [L952] 2 return top; [L974] RET, EXPR 2 get_top() [L974] COND FALSE 2 !(get_top()==0) [L981] CALL 2 dec_top() [L948] 2 top-- VAL [arr={3:0}, flag=1, m={4:0}, top=0] [L981] RET 2 dec_top() [L982] CALL, EXPR 2 get_top() [L952] 2 return top; VAL [\result=0, \result=0, arr={3:0}, flag=1, m={4:0}, top=0] [L982] RET, EXPR 2 get_top() [L982] EXPR 2 stack[get_top()] [L982] 2 return stack[get_top()]; [L1010] RET, EXPR 2 pop(arr) [L1010] COND FALSE 2 !(!(pop(arr)!=(-2))) [L1005] 2 i++ VAL [arg={0:0}, arg={0:0}, arr={3:0}, flag=1, i=1, m={4:0}, top=0] [L1005] COND TRUE 2 i<(400) [L1008] COND TRUE 2 \read(flag) [L1010] CALL, EXPR 2 pop(arr) [L974] CALL, EXPR 2 get_top() [L952] 2 return top; [L974] RET, EXPR 2 get_top() [L974] COND TRUE 2 get_top()==0 [L977] 2 return (-2); [L1010] RET, EXPR 2 pop(arr) [L1010] COND TRUE 2 !(pop(arr)!=(-2)) [L1011] CALL 2 error() [L940] 2 reach_error() VAL [arr={3:0}, flag=1, m={4:0}, top=0] - UnprovableResult [Line: 1021]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1022]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 940]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 266 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 16.3s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1214 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1011 mSDsluCounter, 975 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 941 mSDsCounter, 58 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3023 IncrementalHoareTripleChecker+Invalid, 3081 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 58 mSolverCounterUnsat, 34 mSDtfsCounter, 3023 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 107 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=612occurred in iteration=9, InterpolantAutomatonStates: 51, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 208 NumberOfCodeBlocks, 208 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 184 ConstructedInterpolants, 0 QuantifiedInterpolants, 1578 SizeOfPredicates, 3 NumberOfNonLiveVariables, 396 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 12 InterpolantComputations, 8 PerfectInterpolantSequences, 7/15 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-12 02:20:48,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6adf456c-5aeb-4bd5-8db5-07218582b9ee/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE