./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/rfi003_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2aabc7-c5e5-4c36-b079-374d65763dc3/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2aabc7-c5e5-4c36-b079-374d65763dc3/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2aabc7-c5e5-4c36-b079-374d65763dc3/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2aabc7-c5e5-4c36-b079-374d65763dc3/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/rfi003_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2aabc7-c5e5-4c36-b079-374d65763dc3/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2aabc7-c5e5-4c36-b079-374d65763dc3/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 503cbc793fb2369a7e5308c15a611fe38888f935ec98bb5d473194a0a60e31e4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:28:31,714 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:28:31,808 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2aabc7-c5e5-4c36-b079-374d65763dc3/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:28:31,812 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:28:31,813 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:28:31,840 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:28:31,840 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:28:31,841 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:28:31,842 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:28:31,842 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:28:31,843 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:28:31,844 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:28:31,844 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:28:31,845 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:28:31,846 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:28:31,846 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:28:31,847 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:28:31,847 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:28:31,848 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:28:31,849 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:28:31,849 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:28:31,850 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:28:31,850 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:28:31,851 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:28:31,852 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:28:31,852 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:28:31,853 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:28:31,853 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:28:31,854 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:28:31,854 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:28:31,855 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:28:31,855 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:28:31,856 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:28:31,856 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:28:31,856 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:28:31,857 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:28:31,857 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:28:31,857 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:28:31,858 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:28:31,858 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_8a2aabc7-c5e5-4c36-b079-374d65763dc3/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2aabc7-c5e5-4c36-b079-374d65763dc3/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 503cbc793fb2369a7e5308c15a611fe38888f935ec98bb5d473194a0a60e31e4 [2023-11-06 22:28:32,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:28:32,273 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:28:32,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:28:32,277 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:28:32,278 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:28:32,279 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2aabc7-c5e5-4c36-b079-374d65763dc3/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-wmm/rfi003_tso.i [2023-11-06 22:28:35,303 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:28:35,617 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:28:35,618 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2aabc7-c5e5-4c36-b079-374d65763dc3/sv-benchmarks/c/pthread-wmm/rfi003_tso.i [2023-11-06 22:28:35,636 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2aabc7-c5e5-4c36-b079-374d65763dc3/bin/uautomizer-verify-WvqO1wxjHP/data/f09f917f5/b466b49c6c754812b1aae35354ead1ed/FLAG01de65f04 [2023-11-06 22:28:35,651 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2aabc7-c5e5-4c36-b079-374d65763dc3/bin/uautomizer-verify-WvqO1wxjHP/data/f09f917f5/b466b49c6c754812b1aae35354ead1ed [2023-11-06 22:28:35,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:28:35,656 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:28:35,657 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:28:35,658 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:28:35,663 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:28:35,664 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:28:35" (1/1) ... [2023-11-06 22:28:35,665 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a3ce560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:35, skipping insertion in model container [2023-11-06 22:28:35,665 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:28:35" (1/1) ... [2023-11-06 22:28:35,728 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:28:35,955 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_8a2aabc7-c5e5-4c36-b079-374d65763dc3/sv-benchmarks/c/pthread-wmm/rfi003_tso.i[944,957] [2023-11-06 22:28:36,273 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:28:36,288 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:28:36,302 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_8a2aabc7-c5e5-4c36-b079-374d65763dc3/sv-benchmarks/c/pthread-wmm/rfi003_tso.i[944,957] [2023-11-06 22:28:36,354 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:28:36,391 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:28:36,392 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:28:36,401 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:28:36,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:36 WrapperNode [2023-11-06 22:28:36,402 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:28:36,403 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:28:36,403 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:28:36,404 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:28:36,412 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:36" (1/1) ... [2023-11-06 22:28:36,439 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:36" (1/1) ... [2023-11-06 22:28:36,480 INFO L138 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 170 [2023-11-06 22:28:36,484 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:28:36,484 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:28:36,485 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:28:36,485 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:28:36,495 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:36" (1/1) ... [2023-11-06 22:28:36,495 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:36" (1/1) ... [2023-11-06 22:28:36,499 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:36" (1/1) ... [2023-11-06 22:28:36,499 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:36" (1/1) ... [2023-11-06 22:28:36,515 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:36" (1/1) ... [2023-11-06 22:28:36,517 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:36" (1/1) ... [2023-11-06 22:28:36,521 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:36" (1/1) ... [2023-11-06 22:28:36,523 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:36" (1/1) ... [2023-11-06 22:28:36,528 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:28:36,529 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:28:36,543 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:28:36,544 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:28:36,545 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:36" (1/1) ... [2023-11-06 22:28:36,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:28:36,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2aabc7-c5e5-4c36-b079-374d65763dc3/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:28:36,587 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2aabc7-c5e5-4c36-b079-374d65763dc3/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:28:36,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2aabc7-c5e5-4c36-b079-374d65763dc3/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:28:36,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:28:36,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:28:36,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:28:36,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:28:36,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:28:36,635 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-06 22:28:36,635 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-06 22:28:36,636 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-06 22:28:36,636 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-06 22:28:36,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:28:36,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:28:36,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:28:36,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:28:36,642 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:28:36,837 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:28:36,839 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:28:37,290 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:28:37,621 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:28:37,622 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:28:37,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:28:37 BoogieIcfgContainer [2023-11-06 22:28:37,625 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:28:37,631 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:28:37,631 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:28:37,635 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:28:37,636 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:28:35" (1/3) ... [2023-11-06 22:28:37,636 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3159d4d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:28:37, skipping insertion in model container [2023-11-06 22:28:37,637 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:36" (2/3) ... [2023-11-06 22:28:37,638 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3159d4d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:28:37, skipping insertion in model container [2023-11-06 22:28:37,639 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:28:37" (3/3) ... [2023-11-06 22:28:37,641 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi003_tso.i [2023-11-06 22:28:37,651 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:28:37,663 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:28:37,664 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-06 22:28:37,664 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:28:37,732 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:28:37,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 95 transitions, 198 flow [2023-11-06 22:28:37,864 INFO L124 PetriNetUnfolderBase]: 2/93 cut-off events. [2023-11-06 22:28:37,864 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:28:37,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 93 events. 2/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-11-06 22:28:37,870 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 95 transitions, 198 flow [2023-11-06 22:28:37,876 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 93 transitions, 192 flow [2023-11-06 22:28:37,880 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:28:37,900 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 93 transitions, 192 flow [2023-11-06 22:28:37,905 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 93 transitions, 192 flow [2023-11-06 22:28:37,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 93 transitions, 192 flow [2023-11-06 22:28:37,953 INFO L124 PetriNetUnfolderBase]: 2/93 cut-off events. [2023-11-06 22:28:37,953 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:28:37,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 93 events. 2/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-11-06 22:28:37,957 INFO L119 LiptonReduction]: Number of co-enabled transitions 1388 [2023-11-06 22:28:42,042 INFO L134 LiptonReduction]: Checked pairs total: 4590 [2023-11-06 22:28:42,043 INFO L136 LiptonReduction]: Total number of compositions: 80 [2023-11-06 22:28:42,057 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:28:42,064 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2e46edc7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:28:42,064 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-06 22:28:42,070 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:28:42,070 INFO L124 PetriNetUnfolderBase]: 1/12 cut-off events. [2023-11-06 22:28:42,071 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:28:42,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:28:42,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:28:42,072 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:28:42,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:42,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1950869710, now seen corresponding path program 1 times [2023-11-06 22:28:42,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:42,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962844523] [2023-11-06 22:28:42,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:42,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:42,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:28:42,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:42,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962844523] [2023-11-06 22:28:42,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962844523] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:28:42,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:28:42,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:28:42,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107866753] [2023-11-06 22:28:42,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:28:42,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:28:42,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:42,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:28:42,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:28:42,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 175 [2023-11-06 22:28:42,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:42,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:28:42,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 175 [2023-11-06 22:28:42,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:28:42,932 INFO L124 PetriNetUnfolderBase]: 380/638 cut-off events. [2023-11-06 22:28:42,932 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:28:42,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1290 conditions, 638 events. 380/638 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2606 event pairs, 90 based on Foata normal form. 35/602 useless extension candidates. Maximal degree in co-relation 1280. Up to 466 conditions per place. [2023-11-06 22:28:42,944 INFO L140 encePairwiseOnDemand]: 171/175 looper letters, 24 selfloop transitions, 2 changer transitions 4/31 dead transitions. [2023-11-06 22:28:42,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 31 transitions, 128 flow [2023-11-06 22:28:42,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:28:42,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:28:42,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2023-11-06 22:28:42,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2023-11-06 22:28:42,971 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2023-11-06 22:28:42,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2023-11-06 22:28:42,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:28:42,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2023-11-06 22:28:42,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:42,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:42,990 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:42,992 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 52 flow. Second operand 3 states and 273 transitions. [2023-11-06 22:28:42,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 31 transitions, 128 flow [2023-11-06 22:28:42,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 31 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:28:42,998 INFO L231 Difference]: Finished difference. Result has 28 places, 19 transitions, 46 flow [2023-11-06 22:28:43,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=28, PETRI_TRANSITIONS=19} [2023-11-06 22:28:43,006 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -1 predicate places. [2023-11-06 22:28:43,007 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 19 transitions, 46 flow [2023-11-06 22:28:43,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:43,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:28:43,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:28:43,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:28:43,008 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:28:43,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:43,019 INFO L85 PathProgramCache]: Analyzing trace with hash -2113279695, now seen corresponding path program 1 times [2023-11-06 22:28:43,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:43,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379604784] [2023-11-06 22:28:43,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:43,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:43,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:44,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:28:44,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:44,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379604784] [2023-11-06 22:28:44,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379604784] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:28:44,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:28:44,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:28:44,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385887699] [2023-11-06 22:28:44,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:28:44,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:28:44,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:44,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:28:44,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:28:44,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 175 [2023-11-06 22:28:44,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 19 transitions, 46 flow. Second operand has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:44,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:28:44,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 175 [2023-11-06 22:28:44,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:28:44,469 INFO L124 PetriNetUnfolderBase]: 289/506 cut-off events. [2023-11-06 22:28:44,470 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-06 22:28:44,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1054 conditions, 506 events. 289/506 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1859 event pairs, 125 based on Foata normal form. 42/548 useless extension candidates. Maximal degree in co-relation 1044. Up to 226 conditions per place. [2023-11-06 22:28:44,474 INFO L140 encePairwiseOnDemand]: 171/175 looper letters, 24 selfloop transitions, 2 changer transitions 17/43 dead transitions. [2023-11-06 22:28:44,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 43 transitions, 182 flow [2023-11-06 22:28:44,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:28:44,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:28:44,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 385 transitions. [2023-11-06 22:28:44,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44 [2023-11-06 22:28:44,477 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 385 transitions. [2023-11-06 22:28:44,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 385 transitions. [2023-11-06 22:28:44,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:28:44,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 385 transitions. [2023-11-06 22:28:44,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:44,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:44,488 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:44,489 INFO L175 Difference]: Start difference. First operand has 28 places, 19 transitions, 46 flow. Second operand 5 states and 385 transitions. [2023-11-06 22:28:44,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 43 transitions, 182 flow [2023-11-06 22:28:44,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 43 transitions, 176 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:28:44,494 INFO L231 Difference]: Finished difference. Result has 31 places, 19 transitions, 54 flow [2023-11-06 22:28:44,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=54, PETRI_PLACES=31, PETRI_TRANSITIONS=19} [2023-11-06 22:28:44,496 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2023-11-06 22:28:44,496 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 19 transitions, 54 flow [2023-11-06 22:28:44,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:44,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:28:44,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:28:44,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:28:44,498 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:28:44,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:44,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1454473971, now seen corresponding path program 1 times [2023-11-06 22:28:44,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:44,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387091739] [2023-11-06 22:28:44,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:44,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:44,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:45,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:28:45,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:45,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387091739] [2023-11-06 22:28:45,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387091739] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:28:45,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:28:45,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:28:45,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062697581] [2023-11-06 22:28:45,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:28:45,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:28:45,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:45,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:28:45,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:28:45,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 175 [2023-11-06 22:28:45,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 19 transitions, 54 flow. Second operand has 9 states, 9 states have (on average 69.33333333333333) internal successors, (624), 9 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:45,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:28:45,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 175 [2023-11-06 22:28:45,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:28:46,382 INFO L124 PetriNetUnfolderBase]: 188/350 cut-off events. [2023-11-06 22:28:46,382 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2023-11-06 22:28:46,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 785 conditions, 350 events. 188/350 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1284 event pairs, 139 based on Foata normal form. 17/367 useless extension candidates. Maximal degree in co-relation 772. Up to 303 conditions per place. [2023-11-06 22:28:46,386 INFO L140 encePairwiseOnDemand]: 166/175 looper letters, 26 selfloop transitions, 9 changer transitions 9/45 dead transitions. [2023-11-06 22:28:46,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 45 transitions, 201 flow [2023-11-06 22:28:46,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:28:46,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:28:46,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 591 transitions. [2023-11-06 22:28:46,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42214285714285715 [2023-11-06 22:28:46,391 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 591 transitions. [2023-11-06 22:28:46,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 591 transitions. [2023-11-06 22:28:46,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:28:46,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 591 transitions. [2023-11-06 22:28:46,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 73.875) internal successors, (591), 8 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:46,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 175.0) internal successors, (1575), 9 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:46,400 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 175.0) internal successors, (1575), 9 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:46,401 INFO L175 Difference]: Start difference. First operand has 31 places, 19 transitions, 54 flow. Second operand 8 states and 591 transitions. [2023-11-06 22:28:46,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 45 transitions, 201 flow [2023-11-06 22:28:46,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 45 transitions, 191 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-06 22:28:46,407 INFO L231 Difference]: Finished difference. Result has 38 places, 27 transitions, 113 flow [2023-11-06 22:28:46,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=113, PETRI_PLACES=38, PETRI_TRANSITIONS=27} [2023-11-06 22:28:46,409 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2023-11-06 22:28:46,413 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 27 transitions, 113 flow [2023-11-06 22:28:46,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 69.33333333333333) internal successors, (624), 9 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:46,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:28:46,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:28:46,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:28:46,415 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:28:46,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:46,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1867422455, now seen corresponding path program 1 times [2023-11-06 22:28:46,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:46,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964977420] [2023-11-06 22:28:46,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:46,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:46,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:28:46,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:46,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964977420] [2023-11-06 22:28:46,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964977420] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:28:46,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:28:46,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:28:46,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267097563] [2023-11-06 22:28:46,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:28:46,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:28:46,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:46,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:28:46,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:28:46,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 175 [2023-11-06 22:28:46,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 27 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:46,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:28:46,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 175 [2023-11-06 22:28:46,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:28:46,808 INFO L124 PetriNetUnfolderBase]: 64/148 cut-off events. [2023-11-06 22:28:46,808 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2023-11-06 22:28:46,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 425 conditions, 148 events. 64/148 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 449 event pairs, 21 based on Foata normal form. 22/169 useless extension candidates. Maximal degree in co-relation 408. Up to 93 conditions per place. [2023-11-06 22:28:46,810 INFO L140 encePairwiseOnDemand]: 171/175 looper letters, 35 selfloop transitions, 3 changer transitions 0/39 dead transitions. [2023-11-06 22:28:46,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 39 transitions, 228 flow [2023-11-06 22:28:46,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:28:46,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:28:46,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 265 transitions. [2023-11-06 22:28:46,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5047619047619047 [2023-11-06 22:28:46,813 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 265 transitions. [2023-11-06 22:28:46,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 265 transitions. [2023-11-06 22:28:46,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:28:46,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 265 transitions. [2023-11-06 22:28:46,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:46,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:46,817 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:46,817 INFO L175 Difference]: Start difference. First operand has 38 places, 27 transitions, 113 flow. Second operand 3 states and 265 transitions. [2023-11-06 22:28:46,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 39 transitions, 228 flow [2023-11-06 22:28:46,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 39 transitions, 226 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:28:46,822 INFO L231 Difference]: Finished difference. Result has 38 places, 29 transitions, 130 flow [2023-11-06 22:28:46,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=38, PETRI_TRANSITIONS=29} [2023-11-06 22:28:46,824 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2023-11-06 22:28:46,824 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 29 transitions, 130 flow [2023-11-06 22:28:46,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:46,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:28:46,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:28:46,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:28:46,827 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:28:46,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:46,828 INFO L85 PathProgramCache]: Analyzing trace with hash -803347592, now seen corresponding path program 1 times [2023-11-06 22:28:46,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:46,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573063691] [2023-11-06 22:28:46,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:46,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:46,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:49,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:28:49,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:49,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573063691] [2023-11-06 22:28:49,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573063691] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:28:49,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:28:49,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:28:49,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527915749] [2023-11-06 22:28:49,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:28:49,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:28:49,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:49,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:28:49,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:28:49,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 175 [2023-11-06 22:28:49,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 29 transitions, 130 flow. Second operand has 9 states, 9 states have (on average 71.55555555555556) internal successors, (644), 9 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:49,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:28:49,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 175 [2023-11-06 22:28:49,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:28:49,446 INFO L124 PetriNetUnfolderBase]: 62/152 cut-off events. [2023-11-06 22:28:49,446 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2023-11-06 22:28:49,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469 conditions, 152 events. 62/152 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 472 event pairs, 36 based on Foata normal form. 5/157 useless extension candidates. Maximal degree in co-relation 450. Up to 131 conditions per place. [2023-11-06 22:28:49,448 INFO L140 encePairwiseOnDemand]: 169/175 looper letters, 26 selfloop transitions, 8 changer transitions 5/40 dead transitions. [2023-11-06 22:28:49,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 40 transitions, 247 flow [2023-11-06 22:28:49,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:28:49,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:28:49,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 527 transitions. [2023-11-06 22:28:49,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43020408163265306 [2023-11-06 22:28:49,451 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 527 transitions. [2023-11-06 22:28:49,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 527 transitions. [2023-11-06 22:28:49,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:28:49,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 527 transitions. [2023-11-06 22:28:49,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 75.28571428571429) internal successors, (527), 7 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:49,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 175.0) internal successors, (1400), 8 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:49,457 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 175.0) internal successors, (1400), 8 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:49,457 INFO L175 Difference]: Start difference. First operand has 38 places, 29 transitions, 130 flow. Second operand 7 states and 527 transitions. [2023-11-06 22:28:49,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 40 transitions, 247 flow [2023-11-06 22:28:49,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 40 transitions, 243 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:28:49,461 INFO L231 Difference]: Finished difference. Result has 46 places, 29 transitions, 153 flow [2023-11-06 22:28:49,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=153, PETRI_PLACES=46, PETRI_TRANSITIONS=29} [2023-11-06 22:28:49,462 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2023-11-06 22:28:49,462 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 29 transitions, 153 flow [2023-11-06 22:28:49,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 71.55555555555556) internal successors, (644), 9 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:49,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:28:49,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:28:49,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:28:49,464 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:28:49,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:49,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1624473866, now seen corresponding path program 1 times [2023-11-06 22:28:49,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:49,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753010633] [2023-11-06 22:28:49,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:49,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:49,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:51,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:28:51,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:51,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753010633] [2023-11-06 22:28:51,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753010633] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:28:51,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:28:51,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:28:51,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259171687] [2023-11-06 22:28:51,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:28:51,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:28:51,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:51,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:28:51,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:28:51,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 175 [2023-11-06 22:28:51,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 29 transitions, 153 flow. Second operand has 10 states, 10 states have (on average 70.5) internal successors, (705), 10 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:51,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:28:51,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 175 [2023-11-06 22:28:51,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:28:52,489 INFO L124 PetriNetUnfolderBase]: 76/184 cut-off events. [2023-11-06 22:28:52,489 INFO L125 PetriNetUnfolderBase]: For 143/143 co-relation queries the response was YES. [2023-11-06 22:28:52,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 589 conditions, 184 events. 76/184 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 643 event pairs, 7 based on Foata normal form. 4/188 useless extension candidates. Maximal degree in co-relation 566. Up to 109 conditions per place. [2023-11-06 22:28:52,491 INFO L140 encePairwiseOnDemand]: 165/175 looper letters, 39 selfloop transitions, 21 changer transitions 4/65 dead transitions. [2023-11-06 22:28:52,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 65 transitions, 405 flow [2023-11-06 22:28:52,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:28:52,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-06 22:28:52,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 959 transitions. [2023-11-06 22:28:52,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42153846153846153 [2023-11-06 22:28:52,497 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 959 transitions. [2023-11-06 22:28:52,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 959 transitions. [2023-11-06 22:28:52,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:28:52,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 959 transitions. [2023-11-06 22:28:52,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 73.76923076923077) internal successors, (959), 13 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:52,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 175.0) internal successors, (2450), 14 states have internal predecessors, (2450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:52,507 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 175.0) internal successors, (2450), 14 states have internal predecessors, (2450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:52,507 INFO L175 Difference]: Start difference. First operand has 46 places, 29 transitions, 153 flow. Second operand 13 states and 959 transitions. [2023-11-06 22:28:52,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 65 transitions, 405 flow [2023-11-06 22:28:52,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 65 transitions, 389 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-06 22:28:52,514 INFO L231 Difference]: Finished difference. Result has 56 places, 42 transitions, 254 flow [2023-11-06 22:28:52,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=254, PETRI_PLACES=56, PETRI_TRANSITIONS=42} [2023-11-06 22:28:52,517 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 27 predicate places. [2023-11-06 22:28:52,518 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 42 transitions, 254 flow [2023-11-06 22:28:52,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 70.5) internal successors, (705), 10 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:52,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:28:52,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:28:52,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:28:52,519 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:28:52,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:52,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1608719210, now seen corresponding path program 2 times [2023-11-06 22:28:52,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:52,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664064296] [2023-11-06 22:28:52,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:52,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:52,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:53,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:28:53,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:53,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664064296] [2023-11-06 22:28:53,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664064296] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:28:53,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:28:53,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:28:53,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098365689] [2023-11-06 22:28:53,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:28:53,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:28:53,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:53,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:28:53,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:28:54,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 175 [2023-11-06 22:28:54,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 42 transitions, 254 flow. Second operand has 10 states, 10 states have (on average 72.5) internal successors, (725), 10 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:54,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:28:54,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 175 [2023-11-06 22:28:54,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:28:54,468 INFO L124 PetriNetUnfolderBase]: 104/251 cut-off events. [2023-11-06 22:28:54,468 INFO L125 PetriNetUnfolderBase]: For 366/366 co-relation queries the response was YES. [2023-11-06 22:28:54,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 969 conditions, 251 events. 104/251 cut-off events. For 366/366 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1042 event pairs, 18 based on Foata normal form. 5/255 useless extension candidates. Maximal degree in co-relation 943. Up to 87 conditions per place. [2023-11-06 22:28:54,472 INFO L140 encePairwiseOnDemand]: 166/175 looper letters, 47 selfloop transitions, 19 changer transitions 11/78 dead transitions. [2023-11-06 22:28:54,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 78 transitions, 599 flow [2023-11-06 22:28:54,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:28:54,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:28:54,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 624 transitions. [2023-11-06 22:28:54,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44571428571428573 [2023-11-06 22:28:54,475 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 624 transitions. [2023-11-06 22:28:54,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 624 transitions. [2023-11-06 22:28:54,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:28:54,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 624 transitions. [2023-11-06 22:28:54,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 78.0) internal successors, (624), 8 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:54,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 175.0) internal successors, (1575), 9 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:54,482 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 175.0) internal successors, (1575), 9 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:54,483 INFO L175 Difference]: Start difference. First operand has 56 places, 42 transitions, 254 flow. Second operand 8 states and 624 transitions. [2023-11-06 22:28:54,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 78 transitions, 599 flow [2023-11-06 22:28:54,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 78 transitions, 546 flow, removed 19 selfloop flow, removed 7 redundant places. [2023-11-06 22:28:54,489 INFO L231 Difference]: Finished difference. Result has 59 places, 45 transitions, 309 flow [2023-11-06 22:28:54,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=309, PETRI_PLACES=59, PETRI_TRANSITIONS=45} [2023-11-06 22:28:54,490 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 30 predicate places. [2023-11-06 22:28:54,491 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 45 transitions, 309 flow [2023-11-06 22:28:54,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 72.5) internal successors, (725), 10 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:54,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:28:54,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:28:54,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:28:54,492 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:28:54,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:54,493 INFO L85 PathProgramCache]: Analyzing trace with hash 278039752, now seen corresponding path program 3 times [2023-11-06 22:28:54,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:54,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015177799] [2023-11-06 22:28:54,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:54,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:54,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:54,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:28:54,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:54,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015177799] [2023-11-06 22:28:54,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015177799] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:28:54,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:28:54,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:28:54,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087257217] [2023-11-06 22:28:54,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:28:54,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:28:54,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:54,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:28:54,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:28:54,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 175 [2023-11-06 22:28:54,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 45 transitions, 309 flow. Second operand has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:54,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:28:54,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 175 [2023-11-06 22:28:54,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:28:54,888 INFO L124 PetriNetUnfolderBase]: 48/134 cut-off events. [2023-11-06 22:28:54,888 INFO L125 PetriNetUnfolderBase]: For 229/229 co-relation queries the response was YES. [2023-11-06 22:28:54,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 554 conditions, 134 events. 48/134 cut-off events. For 229/229 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 480 event pairs, 11 based on Foata normal form. 18/151 useless extension candidates. Maximal degree in co-relation 531. Up to 81 conditions per place. [2023-11-06 22:28:54,889 INFO L140 encePairwiseOnDemand]: 171/175 looper letters, 38 selfloop transitions, 5 changer transitions 14/58 dead transitions. [2023-11-06 22:28:54,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 58 transitions, 512 flow [2023-11-06 22:28:54,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:28:54,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:28:54,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 343 transitions. [2023-11-06 22:28:54,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49 [2023-11-06 22:28:54,896 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 343 transitions. [2023-11-06 22:28:54,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 343 transitions. [2023-11-06 22:28:54,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:28:54,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 343 transitions. [2023-11-06 22:28:54,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:54,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:54,900 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:54,900 INFO L175 Difference]: Start difference. First operand has 59 places, 45 transitions, 309 flow. Second operand 4 states and 343 transitions. [2023-11-06 22:28:54,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 58 transitions, 512 flow [2023-11-06 22:28:54,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 58 transitions, 449 flow, removed 16 selfloop flow, removed 8 redundant places. [2023-11-06 22:28:54,905 INFO L231 Difference]: Finished difference. Result has 53 places, 38 transitions, 225 flow [2023-11-06 22:28:54,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=49, 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=4, PETRI_FLOW=225, PETRI_PLACES=53, PETRI_TRANSITIONS=38} [2023-11-06 22:28:54,908 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 24 predicate places. [2023-11-06 22:28:54,909 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 38 transitions, 225 flow [2023-11-06 22:28:54,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:54,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:28:54,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:28:54,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:28:54,910 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:28:54,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:54,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1122695857, now seen corresponding path program 1 times [2023-11-06 22:28:54,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:54,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750048229] [2023-11-06 22:28:54,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:54,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:54,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:55,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:28:55,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:55,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750048229] [2023-11-06 22:28:55,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750048229] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:28:55,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:28:55,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:28:55,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721711863] [2023-11-06 22:28:55,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:28:55,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:28:55,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:55,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:28:55,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:28:55,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 175 [2023-11-06 22:28:55,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 38 transitions, 225 flow. Second operand has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:55,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:28:55,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 175 [2023-11-06 22:28:55,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:28:56,024 INFO L124 PetriNetUnfolderBase]: 46/133 cut-off events. [2023-11-06 22:28:56,025 INFO L125 PetriNetUnfolderBase]: For 208/208 co-relation queries the response was YES. [2023-11-06 22:28:56,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 504 conditions, 133 events. 46/133 cut-off events. For 208/208 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 440 event pairs, 8 based on Foata normal form. 1/134 useless extension candidates. Maximal degree in co-relation 481. Up to 57 conditions per place. [2023-11-06 22:28:56,026 INFO L140 encePairwiseOnDemand]: 168/175 looper letters, 20 selfloop transitions, 3 changer transitions 38/61 dead transitions. [2023-11-06 22:28:56,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 61 transitions, 474 flow [2023-11-06 22:28:56,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:28:56,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:28:56,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 503 transitions. [2023-11-06 22:28:56,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41061224489795917 [2023-11-06 22:28:56,030 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 503 transitions. [2023-11-06 22:28:56,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 503 transitions. [2023-11-06 22:28:56,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:28:56,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 503 transitions. [2023-11-06 22:28:56,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 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) [2023-11-06 22:28:56,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 175.0) internal successors, (1400), 8 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:56,036 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 175.0) internal successors, (1400), 8 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:56,037 INFO L175 Difference]: Start difference. First operand has 53 places, 38 transitions, 225 flow. Second operand 7 states and 503 transitions. [2023-11-06 22:28:56,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 61 transitions, 474 flow [2023-11-06 22:28:56,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 61 transitions, 430 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-11-06 22:28:56,040 INFO L231 Difference]: Finished difference. Result has 56 places, 21 transitions, 105 flow [2023-11-06 22:28:56,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=105, PETRI_PLACES=56, PETRI_TRANSITIONS=21} [2023-11-06 22:28:56,041 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 27 predicate places. [2023-11-06 22:28:56,042 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 21 transitions, 105 flow [2023-11-06 22:28:56,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:56,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:28:56,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:28:56,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:28:56,043 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 22:28:56,043 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:56,044 INFO L85 PathProgramCache]: Analyzing trace with hash -913104655, now seen corresponding path program 2 times [2023-11-06 22:28:56,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:56,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039789179] [2023-11-06 22:28:56,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:56,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:56,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:58,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:28:58,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:58,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039789179] [2023-11-06 22:28:58,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039789179] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:28:58,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:28:58,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:28:58,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763846225] [2023-11-06 22:28:58,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:28:58,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:28:58,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:58,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:28:58,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:28:58,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 175 [2023-11-06 22:28:58,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 21 transitions, 105 flow. Second operand has 12 states, 12 states have (on average 71.5) internal successors, (858), 12 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:58,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:28:58,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 175 [2023-11-06 22:28:58,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:28:58,573 INFO L124 PetriNetUnfolderBase]: 9/40 cut-off events. [2023-11-06 22:28:58,573 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-11-06 22:28:58,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 40 events. 9/40 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 48 event pairs, 1 based on Foata normal form. 1/41 useless extension candidates. Maximal degree in co-relation 137. Up to 14 conditions per place. [2023-11-06 22:28:58,574 INFO L140 encePairwiseOnDemand]: 167/175 looper letters, 0 selfloop transitions, 0 changer transitions 25/25 dead transitions. [2023-11-06 22:28:58,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 25 transitions, 173 flow [2023-11-06 22:28:58,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:28:58,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:28:58,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 653 transitions. [2023-11-06 22:28:58,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146031746031746 [2023-11-06 22:28:58,578 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 653 transitions. [2023-11-06 22:28:58,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 653 transitions. [2023-11-06 22:28:58,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:28:58,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 653 transitions. [2023-11-06 22:28:58,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 72.55555555555556) internal successors, (653), 9 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:58,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 175.0) internal successors, (1750), 10 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:58,585 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 175.0) internal successors, (1750), 10 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:58,585 INFO L175 Difference]: Start difference. First operand has 56 places, 21 transitions, 105 flow. Second operand 9 states and 653 transitions. [2023-11-06 22:28:58,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 25 transitions, 173 flow [2023-11-06 22:28:58,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 25 transitions, 145 flow, removed 5 selfloop flow, removed 11 redundant places. [2023-11-06 22:28:58,588 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2023-11-06 22:28:58,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2023-11-06 22:28:58,589 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places. [2023-11-06 22:28:58,590 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2023-11-06 22:28:58,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 71.5) internal successors, (858), 12 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:58,593 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-11-06 22:28:58,593 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-11-06 22:28:58,595 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-11-06 22:28:58,596 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-11-06 22:28:58,596 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-11-06 22:28:58,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:28:58,597 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1] [2023-11-06 22:28:58,602 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:28:58,602 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:28:58,608 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:28:58 BasicIcfg [2023-11-06 22:28:58,608 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:28:58,609 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:28:58,609 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:28:58,609 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:28:58,610 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:28:37" (3/4) ... [2023-11-06 22:28:58,611 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:28:58,614 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-06 22:28:58,615 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-06 22:28:58,621 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2023-11-06 22:28:58,622 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-11-06 22:28:58,623 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:28:58,623 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:28:58,693 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2aabc7-c5e5-4c36-b079-374d65763dc3/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:28:58,693 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2aabc7-c5e5-4c36-b079-374d65763dc3/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:28:58,693 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:28:58,694 INFO L158 Benchmark]: Toolchain (without parser) took 23038.29ms. Allocated memory was 115.3MB in the beginning and 413.1MB in the end (delta: 297.8MB). Free memory was 72.5MB in the beginning and 327.9MB in the end (delta: -255.4MB). Peak memory consumption was 41.4MB. Max. memory is 16.1GB. [2023-11-06 22:28:58,694 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 115.3MB. Free memory was 86.4MB in the beginning and 86.3MB in the end (delta: 66.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:28:58,695 INFO L158 Benchmark]: CACSL2BoogieTranslator took 744.90ms. Allocated memory is still 115.3MB. Free memory was 72.5MB in the beginning and 70.1MB in the end (delta: 2.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 22:28:58,695 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.78ms. Allocated memory is still 115.3MB. Free memory was 70.1MB in the beginning and 66.7MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 22:28:58,696 INFO L158 Benchmark]: Boogie Preprocessor took 43.83ms. Allocated memory is still 115.3MB. Free memory was 66.7MB in the beginning and 64.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:28:58,696 INFO L158 Benchmark]: RCFGBuilder took 1096.82ms. Allocated memory was 115.3MB in the beginning and 148.9MB in the end (delta: 33.6MB). Free memory was 64.5MB in the beginning and 92.5MB in the end (delta: -28.0MB). Peak memory consumption was 32.0MB. Max. memory is 16.1GB. [2023-11-06 22:28:58,697 INFO L158 Benchmark]: TraceAbstraction took 20977.36ms. Allocated memory was 148.9MB in the beginning and 413.1MB in the end (delta: 264.2MB). Free memory was 91.5MB in the beginning and 332.1MB in the end (delta: -240.6MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. [2023-11-06 22:28:58,697 INFO L158 Benchmark]: Witness Printer took 84.96ms. Allocated memory is still 413.1MB. Free memory was 331.1MB in the beginning and 327.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:28:58,700 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 115.3MB. Free memory was 86.4MB in the beginning and 86.3MB in the end (delta: 66.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 744.90ms. Allocated memory is still 115.3MB. Free memory was 72.5MB in the beginning and 70.1MB in the end (delta: 2.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.78ms. Allocated memory is still 115.3MB. Free memory was 70.1MB in the beginning and 66.7MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.83ms. Allocated memory is still 115.3MB. Free memory was 66.7MB in the beginning and 64.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1096.82ms. Allocated memory was 115.3MB in the beginning and 148.9MB in the end (delta: 33.6MB). Free memory was 64.5MB in the beginning and 92.5MB in the end (delta: -28.0MB). Peak memory consumption was 32.0MB. Max. memory is 16.1GB. * TraceAbstraction took 20977.36ms. Allocated memory was 148.9MB in the beginning and 413.1MB in the end (delta: 264.2MB). Free memory was 91.5MB in the beginning and 332.1MB in the end (delta: -240.6MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. * Witness Printer took 84.96ms. Allocated memory is still 413.1MB. Free memory was 331.1MB in the beginning and 327.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.1s, 98 PlacesBefore, 29 PlacesAfterwards, 93 TransitionsBefore, 23 TransitionsAfterwards, 1388 CoEnabledTransitionPairs, 7 FixpointIterations, 35 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 80 TotalNumberOfCompositions, 4590 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1785, independent: 1580, independent conditional: 0, independent unconditional: 1580, dependent: 205, dependent conditional: 0, dependent unconditional: 205, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 740, independent: 709, independent conditional: 0, independent unconditional: 709, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1785, independent: 871, independent conditional: 0, independent unconditional: 871, dependent: 174, dependent conditional: 0, dependent unconditional: 174, unknown: 740, unknown conditional: 0, unknown unconditional: 740] , Statistics on independence cache: Total cache size (in pairs): 61, Positive cache size: 47, Positive conditional cache size: 0, Positive unconditional cache size: 47, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 116 locations, 5 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: 20.8s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 556 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 447 mSDsluCounter, 759 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 709 mSDsCounter, 183 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1686 IncrementalHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 183 mSolverCounterUnsat, 50 mSDtfsCounter, 1686 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=309occurred in iteration=7, InterpolantAutomatonStates: 67, 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: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 11.5s InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 126 ConstructedInterpolants, 0 QuantifiedInterpolants, 1677 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 22:28:58,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a2aabc7-c5e5-4c36-b079-374d65763dc3/bin/uautomizer-verify-WvqO1wxjHP/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 Result: TRUE