./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76777e4-ba67-4866-9344-50a8cc0b3c68/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76777e4-ba67-4866-9344-50a8cc0b3c68/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_a76777e4-ba67-4866-9344-50a8cc0b3c68/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76777e4-ba67-4866-9344-50a8cc0b3c68/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76777e4-ba67-4866-9344-50a8cc0b3c68/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_a76777e4-ba67-4866-9344-50a8cc0b3c68/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 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:53:52,927 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:53:53,057 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76777e4-ba67-4866-9344-50a8cc0b3c68/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 21:53:53,068 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:53:53,069 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:53:53,111 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:53:53,112 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:53:53,113 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:53:53,114 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:53:53,119 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:53:53,121 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:53:53,121 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:53:53,122 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:53:53,124 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:53:53,124 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:53:53,125 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:53:53,125 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:53:53,126 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:53:53,127 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:53:53,127 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:53:53,128 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:53:53,128 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:53:53,129 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:53:53,129 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:53:53,130 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:53:53,131 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:53:53,131 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:53:53,132 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:53:53,132 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:53:53,133 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:53:53,135 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:53:53,135 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:53:53,135 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:53:53,136 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:53:53,136 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:53:53,136 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:53:53,137 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:53:53,137 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:53:53,137 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:53:53,137 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_a76777e4-ba67-4866-9344-50a8cc0b3c68/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76777e4-ba67-4866-9344-50a8cc0b3c68/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 [2023-11-06 21:53:53,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:53:53,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:53:53,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:53:53,503 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:53:53,504 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:53:53,506 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76777e4-ba67-4866-9344-50a8cc0b3c68/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2023-11-06 21:53:56,580 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:53:56,806 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:53:56,807 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76777e4-ba67-4866-9344-50a8cc0b3c68/sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2023-11-06 21:53:56,817 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76777e4-ba67-4866-9344-50a8cc0b3c68/bin/uautomizer-verify-WvqO1wxjHP/data/6a16ce1d9/c1c27f33b98f40cc9be465ec1c450815/FLAG634d5b72f [2023-11-06 21:53:56,836 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76777e4-ba67-4866-9344-50a8cc0b3c68/bin/uautomizer-verify-WvqO1wxjHP/data/6a16ce1d9/c1c27f33b98f40cc9be465ec1c450815 [2023-11-06 21:53:56,843 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:53:56,845 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:53:56,848 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:53:56,848 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:53:56,855 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:53:56,856 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:53:56" (1/1) ... [2023-11-06 21:53:56,857 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b3a188b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:56, skipping insertion in model container [2023-11-06 21:53:56,857 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:53:56" (1/1) ... [2023-11-06 21:53:56,886 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:53:57,129 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_a76777e4-ba67-4866-9344-50a8cc0b3c68/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[3996,4009] [2023-11-06 21:53:57,194 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:53:57,206 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:53:57,239 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_a76777e4-ba67-4866-9344-50a8cc0b3c68/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[3996,4009] [2023-11-06 21:53:57,248 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:53:57,266 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:53:57,267 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:57 WrapperNode [2023-11-06 21:53:57,267 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:53:57,268 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:53:57,268 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:53:57,269 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:53:57,276 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:57" (1/1) ... [2023-11-06 21:53:57,287 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:57" (1/1) ... [2023-11-06 21:53:57,333 INFO L138 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 436 [2023-11-06 21:53:57,333 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:53:57,334 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:53:57,334 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:53:57,335 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:53:57,345 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:57" (1/1) ... [2023-11-06 21:53:57,345 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:57" (1/1) ... [2023-11-06 21:53:57,353 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:57" (1/1) ... [2023-11-06 21:53:57,354 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:57" (1/1) ... [2023-11-06 21:53:57,370 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:57" (1/1) ... [2023-11-06 21:53:57,376 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:57" (1/1) ... [2023-11-06 21:53:57,380 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:57" (1/1) ... [2023-11-06 21:53:57,383 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:57" (1/1) ... [2023-11-06 21:53:57,389 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:53:57,390 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:53:57,390 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:53:57,391 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:53:57,391 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:57" (1/1) ... [2023-11-06 21:53:57,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:53:57,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76777e4-ba67-4866-9344-50a8cc0b3c68/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:53:57,445 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76777e4-ba67-4866-9344-50a8cc0b3c68/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:53:57,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a76777e4-ba67-4866-9344-50a8cc0b3c68/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:53:57,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:53:57,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:53:57,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:53:57,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 21:53:57,493 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 21:53:57,493 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 21:53:57,493 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 21:53:57,494 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 21:53:57,494 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 21:53:57,494 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 21:53:57,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:53:57,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 21:53:57,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:53:57,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:53:57,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:53:57,499 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 21:53:57,647 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:53:57,649 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:53:58,493 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:53:58,509 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:53:58,509 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-06 21:53:58,512 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:53:58 BoogieIcfgContainer [2023-11-06 21:53:58,512 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:53:58,515 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:53:58,515 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:53:58,518 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:53:58,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:53:56" (1/3) ... [2023-11-06 21:53:58,519 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@627339df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:53:58, skipping insertion in model container [2023-11-06 21:53:58,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:57" (2/3) ... [2023-11-06 21:53:58,520 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@627339df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:53:58, skipping insertion in model container [2023-11-06 21:53:58,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:53:58" (3/3) ... [2023-11-06 21:53:58,521 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-subst.wvr.c [2023-11-06 21:53:58,531 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 21:53:58,542 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:53:58,542 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 21:53:58,542 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 21:53:58,700 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 21:53:58,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 533 places, 564 transitions, 1149 flow [2023-11-06 21:53:59,060 INFO L124 PetriNetUnfolderBase]: 41/561 cut-off events. [2023-11-06 21:53:59,060 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 21:53:59,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 574 conditions, 561 events. 41/561 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 705 event pairs, 0 based on Foata normal form. 0/519 useless extension candidates. Maximal degree in co-relation 479. Up to 2 conditions per place. [2023-11-06 21:53:59,074 INFO L82 GeneralOperation]: Start removeDead. Operand has 533 places, 564 transitions, 1149 flow [2023-11-06 21:53:59,090 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 519 places, 550 transitions, 1118 flow [2023-11-06 21:53:59,094 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 21:53:59,118 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 519 places, 550 transitions, 1118 flow [2023-11-06 21:53:59,124 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 519 places, 550 transitions, 1118 flow [2023-11-06 21:53:59,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 519 places, 550 transitions, 1118 flow [2023-11-06 21:53:59,346 INFO L124 PetriNetUnfolderBase]: 41/550 cut-off events. [2023-11-06 21:53:59,346 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 21:53:59,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 563 conditions, 550 events. 41/550 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 704 event pairs, 0 based on Foata normal form. 0/509 useless extension candidates. Maximal degree in co-relation 479. Up to 2 conditions per place. [2023-11-06 21:53:59,369 INFO L119 LiptonReduction]: Number of co-enabled transitions 21384 [2023-11-06 21:54:23,249 INFO L134 LiptonReduction]: Checked pairs total: 24423 [2023-11-06 21:54:23,249 INFO L136 LiptonReduction]: Total number of compositions: 650 [2023-11-06 21:54:23,266 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:54:23,273 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;@5f018c08, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:54:23,273 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-06 21:54:23,283 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 21:54:23,284 INFO L124 PetriNetUnfolderBase]: 10/41 cut-off events. [2023-11-06 21:54:23,284 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 21:54:23,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:23,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:23,286 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 21:54:23,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:23,291 INFO L85 PathProgramCache]: Analyzing trace with hash -430831474, now seen corresponding path program 1 times [2023-11-06 21:54:23,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:23,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894029337] [2023-11-06 21:54:23,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:23,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:23,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:23,689 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 21:54:23,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:23,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894029337] [2023-11-06 21:54:23,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894029337] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:23,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:23,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:54:23,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344708364] [2023-11-06 21:54:23,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:23,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 21:54:23,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:23,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 21:54:23,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 21:54:23,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 528 out of 1214 [2023-11-06 21:54:23,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 102 flow. Second operand has 2 states, 2 states have (on average 540.5) internal successors, (1081), 2 states have internal predecessors, (1081), 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 21:54:23,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:23,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 528 of 1214 [2023-11-06 21:54:23,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:24,015 INFO L124 PetriNetUnfolderBase]: 699/1048 cut-off events. [2023-11-06 21:54:24,016 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2023-11-06 21:54:24,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2232 conditions, 1048 events. 699/1048 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3694 event pairs, 557 based on Foata normal form. 0/906 useless extension candidates. Maximal degree in co-relation 2016. Up to 1049 conditions per place. [2023-11-06 21:54:24,025 INFO L140 encePairwiseOnDemand]: 1213/1214 looper letters, 41 selfloop transitions, 0 changer transitions 0/41 dead transitions. [2023-11-06 21:54:24,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 182 flow [2023-11-06 21:54:24,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 21:54:24,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 21:54:24,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1098 transitions. [2023-11-06 21:54:24,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45222405271828664 [2023-11-06 21:54:24,057 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1098 transitions. [2023-11-06 21:54:24,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1098 transitions. [2023-11-06 21:54:24,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:24,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1098 transitions. [2023-11-06 21:54:24,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 549.0) internal successors, (1098), 2 states have internal predecessors, (1098), 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 21:54:24,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1214.0) internal successors, (3642), 3 states have internal predecessors, (3642), 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 21:54:24,091 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1214.0) internal successors, (3642), 3 states have internal predecessors, (3642), 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 21:54:24,093 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 102 flow. Second operand 2 states and 1098 transitions. [2023-11-06 21:54:24,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 182 flow [2023-11-06 21:54:24,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 41 transitions, 170 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-06 21:54:24,103 INFO L231 Difference]: Finished difference. Result has 37 places, 41 transitions, 88 flow [2023-11-06 21:54:24,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1214, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=88, PETRI_PLACES=37, PETRI_TRANSITIONS=41} [2023-11-06 21:54:24,109 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -5 predicate places. [2023-11-06 21:54:24,110 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 41 transitions, 88 flow [2023-11-06 21:54:24,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 540.5) internal successors, (1081), 2 states have internal predecessors, (1081), 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 21:54:24,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:24,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:24,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:54:24,113 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 21:54:24,123 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:24,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1428415172, now seen corresponding path program 1 times [2023-11-06 21:54:24,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:24,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385683617] [2023-11-06 21:54:24,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:24,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:24,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:24,319 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 21:54:24,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:24,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385683617] [2023-11-06 21:54:24,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385683617] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:24,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:24,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:54:24,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534993304] [2023-11-06 21:54:24,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:24,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:54:24,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:24,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:54:24,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:54:24,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 521 out of 1214 [2023-11-06 21:54:24,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 41 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 530.3333333333334) internal successors, (1591), 3 states have internal predecessors, (1591), 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 21:54:24,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:24,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 521 of 1214 [2023-11-06 21:54:24,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:24,701 INFO L124 PetriNetUnfolderBase]: 789/1184 cut-off events. [2023-11-06 21:54:24,701 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-06 21:54:24,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2435 conditions, 1184 events. 789/1184 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4351 event pairs, 473 based on Foata normal form. 0/1036 useless extension candidates. Maximal degree in co-relation 2432. Up to 867 conditions per place. [2023-11-06 21:54:24,710 INFO L140 encePairwiseOnDemand]: 1210/1214 looper letters, 52 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2023-11-06 21:54:24,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 55 transitions, 228 flow [2023-11-06 21:54:24,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:54:24,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:54:24,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1619 transitions. [2023-11-06 21:54:24,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44453596924766614 [2023-11-06 21:54:24,717 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1619 transitions. [2023-11-06 21:54:24,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1619 transitions. [2023-11-06 21:54:24,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:24,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1619 transitions. [2023-11-06 21:54:24,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 539.6666666666666) internal successors, (1619), 3 states have internal predecessors, (1619), 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 21:54:24,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1214.0) internal successors, (4856), 4 states have internal predecessors, (4856), 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 21:54:24,744 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1214.0) internal successors, (4856), 4 states have internal predecessors, (4856), 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 21:54:24,744 INFO L175 Difference]: Start difference. First operand has 37 places, 41 transitions, 88 flow. Second operand 3 states and 1619 transitions. [2023-11-06 21:54:24,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 55 transitions, 228 flow [2023-11-06 21:54:24,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 55 transitions, 228 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 21:54:24,747 INFO L231 Difference]: Finished difference. Result has 41 places, 42 transitions, 106 flow [2023-11-06 21:54:24,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1214, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=41, PETRI_TRANSITIONS=42} [2023-11-06 21:54:24,748 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2023-11-06 21:54:24,748 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 42 transitions, 106 flow [2023-11-06 21:54:24,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 530.3333333333334) internal successors, (1591), 3 states have internal predecessors, (1591), 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 21:54:24,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:24,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:24,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:54:24,751 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 21:54:24,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:24,752 INFO L85 PathProgramCache]: Analyzing trace with hash -993574282, now seen corresponding path program 1 times [2023-11-06 21:54:24,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:24,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788732700] [2023-11-06 21:54:24,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:24,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:24,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:25,067 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 21:54:25,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:25,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788732700] [2023-11-06 21:54:25,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788732700] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:25,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:25,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:54:25,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921482251] [2023-11-06 21:54:25,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:25,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:54:25,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:25,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:54:25,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:54:25,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 510 out of 1214 [2023-11-06 21:54:25,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 42 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 519.6666666666666) internal successors, (1559), 3 states have internal predecessors, (1559), 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 21:54:25,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:25,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 510 of 1214 [2023-11-06 21:54:25,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:25,448 INFO L124 PetriNetUnfolderBase]: 789/1185 cut-off events. [2023-11-06 21:54:25,448 INFO L125 PetriNetUnfolderBase]: For 215/215 co-relation queries the response was YES. [2023-11-06 21:54:25,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2807 conditions, 1185 events. 789/1185 cut-off events. For 215/215 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4301 event pairs, 641 based on Foata normal form. 0/1129 useless extension candidates. Maximal degree in co-relation 2802. Up to 1185 conditions per place. [2023-11-06 21:54:25,456 INFO L140 encePairwiseOnDemand]: 1211/1214 looper letters, 41 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-11-06 21:54:25,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 43 transitions, 194 flow [2023-11-06 21:54:25,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:54:25,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:54:25,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1573 transitions. [2023-11-06 21:54:25,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4319055464030752 [2023-11-06 21:54:25,464 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1573 transitions. [2023-11-06 21:54:25,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1573 transitions. [2023-11-06 21:54:25,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:25,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1573 transitions. [2023-11-06 21:54:25,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 524.3333333333334) internal successors, (1573), 3 states have internal predecessors, (1573), 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 21:54:25,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1214.0) internal successors, (4856), 4 states have internal predecessors, (4856), 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 21:54:25,486 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1214.0) internal successors, (4856), 4 states have internal predecessors, (4856), 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 21:54:25,487 INFO L175 Difference]: Start difference. First operand has 41 places, 42 transitions, 106 flow. Second operand 3 states and 1573 transitions. [2023-11-06 21:54:25,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 43 transitions, 194 flow [2023-11-06 21:54:25,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 43 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:54:25,492 INFO L231 Difference]: Finished difference. Result has 42 places, 43 transitions, 112 flow [2023-11-06 21:54:25,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1214, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=42, PETRI_TRANSITIONS=43} [2023-11-06 21:54:25,493 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-11-06 21:54:25,493 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 43 transitions, 112 flow [2023-11-06 21:54:25,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 519.6666666666666) internal successors, (1559), 3 states have internal predecessors, (1559), 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 21:54:25,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:25,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:25,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 21:54:25,496 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 21:54:25,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:25,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1664789365, now seen corresponding path program 1 times [2023-11-06 21:54:25,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:25,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395372903] [2023-11-06 21:54:25,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:25,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:25,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:25,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:54:25,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:25,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395372903] [2023-11-06 21:54:25,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395372903] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:25,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:25,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:54:25,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656183244] [2023-11-06 21:54:25,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:25,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:54:25,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:25,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:54:25,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:54:25,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 508 out of 1214 [2023-11-06 21:54:25,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 43 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 515.5) internal successors, (2062), 4 states have internal predecessors, (2062), 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 21:54:25,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:25,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 508 of 1214 [2023-11-06 21:54:25,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:26,106 INFO L124 PetriNetUnfolderBase]: 789/1186 cut-off events. [2023-11-06 21:54:26,107 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-11-06 21:54:26,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2677 conditions, 1186 events. 789/1186 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4296 event pairs, 641 based on Foata normal form. 0/1084 useless extension candidates. Maximal degree in co-relation 2671. Up to 1184 conditions per place. [2023-11-06 21:54:26,117 INFO L140 encePairwiseOnDemand]: 1209/1214 looper letters, 40 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2023-11-06 21:54:26,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 44 transitions, 202 flow [2023-11-06 21:54:26,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:54:26,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 21:54:26,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2076 transitions. [2023-11-06 21:54:26,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42751235584843494 [2023-11-06 21:54:26,128 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2076 transitions. [2023-11-06 21:54:26,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2076 transitions. [2023-11-06 21:54:26,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:26,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2076 transitions. [2023-11-06 21:54:26,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 519.0) internal successors, (2076), 4 states have internal predecessors, (2076), 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 21:54:26,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1214.0) internal successors, (6070), 5 states have internal predecessors, (6070), 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 21:54:26,160 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1214.0) internal successors, (6070), 5 states have internal predecessors, (6070), 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 21:54:26,160 INFO L175 Difference]: Start difference. First operand has 42 places, 43 transitions, 112 flow. Second operand 4 states and 2076 transitions. [2023-11-06 21:54:26,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 44 transitions, 202 flow [2023-11-06 21:54:26,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 44 transitions, 198 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 21:54:26,167 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 126 flow [2023-11-06 21:54:26,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1214, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=126, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2023-11-06 21:54:26,169 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2023-11-06 21:54:26,169 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 126 flow [2023-11-06 21:54:26,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 515.5) internal successors, (2062), 4 states have internal predecessors, (2062), 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 21:54:26,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:26,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:26,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 21:54:26,172 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 21:54:26,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:26,173 INFO L85 PathProgramCache]: Analyzing trace with hash -752942504, now seen corresponding path program 1 times [2023-11-06 21:54:26,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:26,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292170742] [2023-11-06 21:54:26,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:26,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:26,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 21:54:26,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:26,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292170742] [2023-11-06 21:54:26,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292170742] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:26,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:26,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:54:26,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761865327] [2023-11-06 21:54:26,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:26,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:54:26,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:26,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:54:26,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:54:26,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 508 out of 1214 [2023-11-06 21:54:26,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 515.75) internal successors, (2063), 4 states have internal predecessors, (2063), 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 21:54:26,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:26,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 508 of 1214 [2023-11-06 21:54:26,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:26,834 INFO L124 PetriNetUnfolderBase]: 789/1187 cut-off events. [2023-11-06 21:54:26,834 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-11-06 21:54:26,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2686 conditions, 1187 events. 789/1187 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4296 event pairs, 641 based on Foata normal form. 0/1086 useless extension candidates. Maximal degree in co-relation 2679. Up to 1185 conditions per place. [2023-11-06 21:54:26,871 INFO L140 encePairwiseOnDemand]: 1209/1214 looper letters, 41 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2023-11-06 21:54:26,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 45 transitions, 218 flow [2023-11-06 21:54:26,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:54:26,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 21:54:26,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2076 transitions. [2023-11-06 21:54:26,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42751235584843494 [2023-11-06 21:54:26,881 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2076 transitions. [2023-11-06 21:54:26,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2076 transitions. [2023-11-06 21:54:26,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:26,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2076 transitions. [2023-11-06 21:54:26,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 519.0) internal successors, (2076), 4 states have internal predecessors, (2076), 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 21:54:26,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1214.0) internal successors, (6070), 5 states have internal predecessors, (6070), 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 21:54:26,905 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1214.0) internal successors, (6070), 5 states have internal predecessors, (6070), 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 21:54:26,906 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 126 flow. Second operand 4 states and 2076 transitions. [2023-11-06 21:54:26,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 45 transitions, 218 flow [2023-11-06 21:54:26,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 45 transitions, 217 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:54:26,912 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 143 flow [2023-11-06 21:54:26,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1214, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=143, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2023-11-06 21:54:26,916 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2023-11-06 21:54:26,916 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 143 flow [2023-11-06 21:54:26,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 515.75) internal successors, (2063), 4 states have internal predecessors, (2063), 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 21:54:26,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:26,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:26,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 21:54:26,918 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 21:54:26,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:26,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1191679969, now seen corresponding path program 1 times [2023-11-06 21:54:26,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:26,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123846244] [2023-11-06 21:54:26,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:26,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:26,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:27,130 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 21:54:27,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:27,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123846244] [2023-11-06 21:54:27,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123846244] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:27,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:27,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:54:27,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958119685] [2023-11-06 21:54:27,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:27,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:54:27,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:27,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:54:27,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:54:27,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 508 out of 1214 [2023-11-06 21:54:27,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 143 flow. Second operand has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 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 21:54:27,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:27,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 508 of 1214 [2023-11-06 21:54:27,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:27,497 INFO L124 PetriNetUnfolderBase]: 789/1188 cut-off events. [2023-11-06 21:54:27,497 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2023-11-06 21:54:27,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2697 conditions, 1188 events. 789/1188 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4296 event pairs, 641 based on Foata normal form. 0/1088 useless extension candidates. Maximal degree in co-relation 2689. Up to 1187 conditions per place. [2023-11-06 21:54:27,507 INFO L140 encePairwiseOnDemand]: 1210/1214 looper letters, 43 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2023-11-06 21:54:27,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 237 flow [2023-11-06 21:54:27,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:54:27,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 21:54:27,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2075 transitions. [2023-11-06 21:54:27,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42730642504118616 [2023-11-06 21:54:27,516 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2075 transitions. [2023-11-06 21:54:27,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2075 transitions. [2023-11-06 21:54:27,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:27,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2075 transitions. [2023-11-06 21:54:27,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 518.75) internal successors, (2075), 4 states have internal predecessors, (2075), 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 21:54:27,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1214.0) internal successors, (6070), 5 states have internal predecessors, (6070), 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 21:54:27,546 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1214.0) internal successors, (6070), 5 states have internal predecessors, (6070), 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 21:54:27,547 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 143 flow. Second operand 4 states and 2075 transitions. [2023-11-06 21:54:27,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 237 flow [2023-11-06 21:54:27,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 233 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:54:27,550 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 153 flow [2023-11-06 21:54:27,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1214, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=153, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2023-11-06 21:54:27,551 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2023-11-06 21:54:27,551 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 153 flow [2023-11-06 21:54:27,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 516.0) internal successors, (2064), 4 states have internal predecessors, (2064), 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 21:54:27,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:27,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:27,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 21:54:27,553 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 21:54:27,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:27,553 INFO L85 PathProgramCache]: Analyzing trace with hash -399726988, now seen corresponding path program 1 times [2023-11-06 21:54:27,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:27,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013976722] [2023-11-06 21:54:27,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:27,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:27,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:27,776 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 21:54:27,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:27,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013976722] [2023-11-06 21:54:27,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013976722] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:27,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:27,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:54:27,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752814791] [2023-11-06 21:54:27,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:27,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:54:27,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:27,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:54:27,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:54:27,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 508 out of 1214 [2023-11-06 21:54:27,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 516.25) internal successors, (2065), 4 states have internal predecessors, (2065), 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 21:54:27,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:27,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 508 of 1214 [2023-11-06 21:54:27,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:28,175 INFO L124 PetriNetUnfolderBase]: 789/1189 cut-off events. [2023-11-06 21:54:28,175 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2023-11-06 21:54:28,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2704 conditions, 1189 events. 789/1189 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4296 event pairs, 641 based on Foata normal form. 0/1090 useless extension candidates. Maximal degree in co-relation 2695. Up to 1188 conditions per place. [2023-11-06 21:54:28,186 INFO L140 encePairwiseOnDemand]: 1210/1214 looper letters, 44 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2023-11-06 21:54:28,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 47 transitions, 249 flow [2023-11-06 21:54:28,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:54:28,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 21:54:28,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2075 transitions. [2023-11-06 21:54:28,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42730642504118616 [2023-11-06 21:54:28,196 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2075 transitions. [2023-11-06 21:54:28,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2075 transitions. [2023-11-06 21:54:28,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:28,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2075 transitions. [2023-11-06 21:54:28,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 518.75) internal successors, (2075), 4 states have internal predecessors, (2075), 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 21:54:28,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1214.0) internal successors, (6070), 5 states have internal predecessors, (6070), 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 21:54:28,217 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1214.0) internal successors, (6070), 5 states have internal predecessors, (6070), 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 21:54:28,217 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 153 flow. Second operand 4 states and 2075 transitions. [2023-11-06 21:54:28,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 47 transitions, 249 flow [2023-11-06 21:54:28,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 47 transitions, 243 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-06 21:54:28,221 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 161 flow [2023-11-06 21:54:28,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1214, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=161, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2023-11-06 21:54:28,222 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2023-11-06 21:54:28,222 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 161 flow [2023-11-06 21:54:28,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 516.25) internal successors, (2065), 4 states have internal predecessors, (2065), 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 21:54:28,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:28,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:28,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 21:54:28,224 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 21:54:28,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:28,225 INFO L85 PathProgramCache]: Analyzing trace with hash 574582666, now seen corresponding path program 1 times [2023-11-06 21:54:28,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:28,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924992103] [2023-11-06 21:54:28,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:28,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:28,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:28,430 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 21:54:28,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:28,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924992103] [2023-11-06 21:54:28,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924992103] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:28,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:28,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:54:28,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468514573] [2023-11-06 21:54:28,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:28,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:54:28,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:28,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:54:28,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:54:28,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 508 out of 1214 [2023-11-06 21:54:28,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 516.5) internal successors, (2066), 4 states have internal predecessors, (2066), 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 21:54:28,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:28,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 508 of 1214 [2023-11-06 21:54:28,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:28,847 INFO L124 PetriNetUnfolderBase]: 789/1190 cut-off events. [2023-11-06 21:54:28,848 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2023-11-06 21:54:28,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2710 conditions, 1190 events. 789/1190 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4292 event pairs, 641 based on Foata normal form. 0/1092 useless extension candidates. Maximal degree in co-relation 2700. Up to 1189 conditions per place. [2023-11-06 21:54:28,858 INFO L140 encePairwiseOnDemand]: 1210/1214 looper letters, 45 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2023-11-06 21:54:28,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 48 transitions, 259 flow [2023-11-06 21:54:28,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:54:28,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 21:54:28,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2075 transitions. [2023-11-06 21:54:28,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42730642504118616 [2023-11-06 21:54:28,868 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2075 transitions. [2023-11-06 21:54:28,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2075 transitions. [2023-11-06 21:54:28,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:28,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2075 transitions. [2023-11-06 21:54:28,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 518.75) internal successors, (2075), 4 states have internal predecessors, (2075), 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 21:54:28,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1214.0) internal successors, (6070), 5 states have internal predecessors, (6070), 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 21:54:28,889 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1214.0) internal successors, (6070), 5 states have internal predecessors, (6070), 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 21:54:28,889 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 161 flow. Second operand 4 states and 2075 transitions. [2023-11-06 21:54:28,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 48 transitions, 259 flow [2023-11-06 21:54:28,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 48 transitions, 253 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-06 21:54:28,894 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 169 flow [2023-11-06 21:54:28,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1214, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=169, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2023-11-06 21:54:28,895 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 12 predicate places. [2023-11-06 21:54:28,895 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 169 flow [2023-11-06 21:54:28,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 516.5) internal successors, (2066), 4 states have internal predecessors, (2066), 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 21:54:28,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:28,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:28,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 21:54:28,897 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 21:54:28,897 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:28,898 INFO L85 PathProgramCache]: Analyzing trace with hash -74665817, now seen corresponding path program 1 times [2023-11-06 21:54:28,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:28,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14494314] [2023-11-06 21:54:28,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:28,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:29,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:32,368 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:54:32,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:32,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14494314] [2023-11-06 21:54:32,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14494314] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:32,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:32,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-06 21:54:32,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572402243] [2023-11-06 21:54:32,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:32,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 21:54:32,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:32,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 21:54:32,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-11-06 21:54:35,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 460 out of 1214 [2023-11-06 21:54:35,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 169 flow. Second operand has 15 states, 15 states have (on average 462.3333333333333) internal successors, (6935), 15 states have internal predecessors, (6935), 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 21:54:35,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:35,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 460 of 1214 [2023-11-06 21:54:35,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:40,340 INFO L124 PetriNetUnfolderBase]: 3047/4781 cut-off events. [2023-11-06 21:54:40,341 INFO L125 PetriNetUnfolderBase]: For 526/526 co-relation queries the response was YES. [2023-11-06 21:54:40,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11021 conditions, 4781 events. 3047/4781 cut-off events. For 526/526 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 27059 event pairs, 324 based on Foata normal form. 2/4388 useless extension candidates. Maximal degree in co-relation 11010. Up to 897 conditions per place. [2023-11-06 21:54:40,377 INFO L140 encePairwiseOnDemand]: 1196/1214 looper letters, 251 selfloop transitions, 88 changer transitions 14/353 dead transitions. [2023-11-06 21:54:40,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 353 transitions, 1691 flow [2023-11-06 21:54:40,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-06 21:54:40,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-06 21:54:40,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 13218 transitions. [2023-11-06 21:54:40,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888562014591669 [2023-11-06 21:54:40,431 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 13218 transitions. [2023-11-06 21:54:40,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 13218 transitions. [2023-11-06 21:54:40,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:40,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 13218 transitions. [2023-11-06 21:54:40,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 472.07142857142856) internal successors, (13218), 28 states have internal predecessors, (13218), 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 21:54:40,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 1214.0) internal successors, (35206), 29 states have internal predecessors, (35206), 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 21:54:40,545 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 1214.0) internal successors, (35206), 29 states have internal predecessors, (35206), 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 21:54:40,545 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 169 flow. Second operand 28 states and 13218 transitions. [2023-11-06 21:54:40,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 353 transitions, 1691 flow [2023-11-06 21:54:40,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 353 transitions, 1685 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-06 21:54:40,580 INFO L231 Difference]: Finished difference. Result has 97 places, 149 transitions, 879 flow [2023-11-06 21:54:40,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1214, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=879, PETRI_PLACES=97, PETRI_TRANSITIONS=149} [2023-11-06 21:54:40,582 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 55 predicate places. [2023-11-06 21:54:40,582 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 149 transitions, 879 flow [2023-11-06 21:54:40,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 462.3333333333333) internal successors, (6935), 15 states have internal predecessors, (6935), 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 21:54:40,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:40,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:40,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 21:54:40,585 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 21:54:40,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:40,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1787627995, now seen corresponding path program 2 times [2023-11-06 21:54:40,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:40,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972542880] [2023-11-06 21:54:40,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:40,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:43,316 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:54:43,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:43,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972542880] [2023-11-06 21:54:43,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972542880] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:43,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:43,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 21:54:43,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369819143] [2023-11-06 21:54:43,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:43,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 21:54:43,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:43,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 21:54:43,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-06 21:54:45,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 473 out of 1214 [2023-11-06 21:54:45,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 149 transitions, 879 flow. Second operand has 12 states, 12 states have (on average 475.9166666666667) internal successors, (5711), 12 states have internal predecessors, (5711), 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 21:54:45,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:45,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 473 of 1214 [2023-11-06 21:54:45,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:48,333 INFO L124 PetriNetUnfolderBase]: 5224/8337 cut-off events. [2023-11-06 21:54:48,334 INFO L125 PetriNetUnfolderBase]: For 23879/23879 co-relation queries the response was YES. [2023-11-06 21:54:48,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31306 conditions, 8337 events. 5224/8337 cut-off events. For 23879/23879 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 53610 event pairs, 606 based on Foata normal form. 1/8337 useless extension candidates. Maximal degree in co-relation 31277. Up to 3187 conditions per place. [2023-11-06 21:54:48,416 INFO L140 encePairwiseOnDemand]: 1203/1214 looper letters, 301 selfloop transitions, 40 changer transitions 7/348 dead transitions. [2023-11-06 21:54:48,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 348 transitions, 2678 flow [2023-11-06 21:54:48,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 21:54:48,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-06 21:54:48,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 5335 transitions. [2023-11-06 21:54:48,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39950576606260296 [2023-11-06 21:54:48,432 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 5335 transitions. [2023-11-06 21:54:48,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 5335 transitions. [2023-11-06 21:54:48,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:48,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 5335 transitions. [2023-11-06 21:54:48,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 485.0) internal successors, (5335), 11 states have internal predecessors, (5335), 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 21:54:48,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 1214.0) internal successors, (14568), 12 states have internal predecessors, (14568), 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 21:54:48,468 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 1214.0) internal successors, (14568), 12 states have internal predecessors, (14568), 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 21:54:48,468 INFO L175 Difference]: Start difference. First operand has 97 places, 149 transitions, 879 flow. Second operand 11 states and 5335 transitions. [2023-11-06 21:54:48,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 348 transitions, 2678 flow [2023-11-06 21:54:48,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 348 transitions, 2653 flow, removed 10 selfloop flow, removed 5 redundant places. [2023-11-06 21:54:48,916 INFO L231 Difference]: Finished difference. Result has 106 places, 169 transitions, 1156 flow [2023-11-06 21:54:48,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1214, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1156, PETRI_PLACES=106, PETRI_TRANSITIONS=169} [2023-11-06 21:54:48,917 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 64 predicate places. [2023-11-06 21:54:48,917 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 169 transitions, 1156 flow [2023-11-06 21:54:48,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 475.9166666666667) internal successors, (5711), 12 states have internal predecessors, (5711), 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 21:54:48,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:48,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:48,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 21:54:48,920 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 21:54:48,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:48,921 INFO L85 PathProgramCache]: Analyzing trace with hash -526099571, now seen corresponding path program 3 times [2023-11-06 21:54:48,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:48,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266333886] [2023-11-06 21:54:48,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:48,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:49,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:52,048 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:54:52,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:52,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266333886] [2023-11-06 21:54:52,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266333886] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:52,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:52,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-06 21:54:52,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989074436] [2023-11-06 21:54:52,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:52,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 21:54:52,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:52,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 21:54:52,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-11-06 21:54:56,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 451 out of 1214 [2023-11-06 21:54:56,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 169 transitions, 1156 flow. Second operand has 16 states, 16 states have (on average 453.1875) internal successors, (7251), 16 states have internal predecessors, (7251), 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 21:54:56,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:56,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 451 of 1214 [2023-11-06 21:54:56,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:55:02,060 INFO L124 PetriNetUnfolderBase]: 7507/12488 cut-off events. [2023-11-06 21:55:02,060 INFO L125 PetriNetUnfolderBase]: For 42738/42738 co-relation queries the response was YES. [2023-11-06 21:55:02,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50303 conditions, 12488 events. 7507/12488 cut-off events. For 42738/42738 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 90248 event pairs, 1771 based on Foata normal form. 2/12489 useless extension candidates. Maximal degree in co-relation 50270. Up to 4377 conditions per place. [2023-11-06 21:55:02,194 INFO L140 encePairwiseOnDemand]: 1196/1214 looper letters, 204 selfloop transitions, 174 changer transitions 7/385 dead transitions. [2023-11-06 21:55:02,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 385 transitions, 3258 flow [2023-11-06 21:55:02,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 21:55:02,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-06 21:55:02,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 8758 transitions. [2023-11-06 21:55:02,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3796930547125639 [2023-11-06 21:55:02,219 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 8758 transitions. [2023-11-06 21:55:02,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 8758 transitions. [2023-11-06 21:55:02,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:55:02,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 8758 transitions. [2023-11-06 21:55:02,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 460.94736842105266) internal successors, (8758), 19 states have internal predecessors, (8758), 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 21:55:02,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 1214.0) internal successors, (24280), 20 states have internal predecessors, (24280), 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 21:55:02,268 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 1214.0) internal successors, (24280), 20 states have internal predecessors, (24280), 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 21:55:02,268 INFO L175 Difference]: Start difference. First operand has 106 places, 169 transitions, 1156 flow. Second operand 19 states and 8758 transitions. [2023-11-06 21:55:02,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 385 transitions, 3258 flow [2023-11-06 21:55:03,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 385 transitions, 3178 flow, removed 17 selfloop flow, removed 5 redundant places. [2023-11-06 21:55:03,414 INFO L231 Difference]: Finished difference. Result has 125 places, 256 transitions, 2338 flow [2023-11-06 21:55:03,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1214, PETRI_DIFFERENCE_MINUEND_FLOW=1127, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2338, PETRI_PLACES=125, PETRI_TRANSITIONS=256} [2023-11-06 21:55:03,415 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 83 predicate places. [2023-11-06 21:55:03,415 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 256 transitions, 2338 flow [2023-11-06 21:55:03,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 453.1875) internal successors, (7251), 16 states have internal predecessors, (7251), 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 21:55:03,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:55:03,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:03,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 21:55:03,417 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 21:55:03,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:03,418 INFO L85 PathProgramCache]: Analyzing trace with hash -6182459, now seen corresponding path program 4 times [2023-11-06 21:55:03,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:03,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349763473] [2023-11-06 21:55:03,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:03,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:03,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:06,042 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:55:06,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:06,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349763473] [2023-11-06 21:55:06,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349763473] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:06,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:06,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 21:55:06,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918951187] [2023-11-06 21:55:06,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:06,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 21:55:06,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:06,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 21:55:06,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-06 21:55:09,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 462 out of 1214 [2023-11-06 21:55:09,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 256 transitions, 2338 flow. Second operand has 13 states, 13 states have (on average 464.6923076923077) internal successors, (6041), 13 states have internal predecessors, (6041), 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 21:55:09,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:55:09,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 462 of 1214 [2023-11-06 21:55:09,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:55:14,652 INFO L124 PetriNetUnfolderBase]: 8832/14942 cut-off events. [2023-11-06 21:55:14,653 INFO L125 PetriNetUnfolderBase]: For 68165/68165 co-relation queries the response was YES. [2023-11-06 21:55:14,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67381 conditions, 14942 events. 8832/14942 cut-off events. For 68165/68165 co-relation queries the response was YES. Maximal size of possible extension queue 904. Compared 114086 event pairs, 889 based on Foata normal form. 1/14943 useless extension candidates. Maximal degree in co-relation 67342. Up to 4516 conditions per place. [2023-11-06 21:55:14,839 INFO L140 encePairwiseOnDemand]: 1199/1214 looper letters, 313 selfloop transitions, 289 changer transitions 7/609 dead transitions. [2023-11-06 21:55:14,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 609 transitions, 6423 flow [2023-11-06 21:55:14,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 21:55:14,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-06 21:55:14,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 6635 transitions. [2023-11-06 21:55:14,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39038597317015766 [2023-11-06 21:55:14,857 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 6635 transitions. [2023-11-06 21:55:14,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 6635 transitions. [2023-11-06 21:55:14,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:55:14,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 6635 transitions. [2023-11-06 21:55:14,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 473.92857142857144) internal successors, (6635), 14 states have internal predecessors, (6635), 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 21:55:14,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 1214.0) internal successors, (18210), 15 states have internal predecessors, (18210), 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 21:55:14,889 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 1214.0) internal successors, (18210), 15 states have internal predecessors, (18210), 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 21:55:14,889 INFO L175 Difference]: Start difference. First operand has 125 places, 256 transitions, 2338 flow. Second operand 14 states and 6635 transitions. [2023-11-06 21:55:14,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 609 transitions, 6423 flow [2023-11-06 21:55:17,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 609 transitions, 6398 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-11-06 21:55:17,098 INFO L231 Difference]: Finished difference. Result has 141 places, 427 transitions, 5199 flow [2023-11-06 21:55:17,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1214, PETRI_DIFFERENCE_MINUEND_FLOW=2321, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5199, PETRI_PLACES=141, PETRI_TRANSITIONS=427} [2023-11-06 21:55:17,100 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 99 predicate places. [2023-11-06 21:55:17,100 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 427 transitions, 5199 flow [2023-11-06 21:55:17,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 464.6923076923077) internal successors, (6041), 13 states have internal predecessors, (6041), 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 21:55:17,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:55:17,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:17,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 21:55:17,102 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 21:55:17,102 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:17,103 INFO L85 PathProgramCache]: Analyzing trace with hash -354460917, now seen corresponding path program 5 times [2023-11-06 21:55:17,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:17,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554690029] [2023-11-06 21:55:17,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:17,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:19,720 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:55:19,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:19,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554690029] [2023-11-06 21:55:19,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554690029] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:19,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:19,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-06 21:55:19,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437915946] [2023-11-06 21:55:19,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:19,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 21:55:19,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:19,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 21:55:19,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-11-06 21:55:24,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 453 out of 1214 [2023-11-06 21:55:24,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 427 transitions, 5199 flow. Second operand has 16 states, 16 states have (on average 455.1875) internal successors, (7283), 16 states have internal predecessors, (7283), 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 21:55:24,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:55:24,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 453 of 1214 [2023-11-06 21:55:24,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:55:29,809 INFO L124 PetriNetUnfolderBase]: 9193/15707 cut-off events. [2023-11-06 21:55:29,809 INFO L125 PetriNetUnfolderBase]: For 119475/119475 co-relation queries the response was YES. [2023-11-06 21:55:29,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82751 conditions, 15707 events. 9193/15707 cut-off events. For 119475/119475 co-relation queries the response was YES. Maximal size of possible extension queue 962. Compared 121709 event pairs, 3296 based on Foata normal form. 3/15709 useless extension candidates. Maximal degree in co-relation 82704. Up to 7225 conditions per place. [2023-11-06 21:55:30,020 INFO L140 encePairwiseOnDemand]: 1197/1214 looper letters, 540 selfloop transitions, 66 changer transitions 10/616 dead transitions. [2023-11-06 21:55:30,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 616 transitions, 8225 flow [2023-11-06 21:55:30,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 21:55:30,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-06 21:55:30,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 6498 transitions. [2023-11-06 21:55:30,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.382325253000706 [2023-11-06 21:55:30,033 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 6498 transitions. [2023-11-06 21:55:30,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 6498 transitions. [2023-11-06 21:55:30,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:55:30,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 6498 transitions. [2023-11-06 21:55:30,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 464.14285714285717) internal successors, (6498), 14 states have internal predecessors, (6498), 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 21:55:30,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 1214.0) internal successors, (18210), 15 states have internal predecessors, (18210), 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 21:55:30,063 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 1214.0) internal successors, (18210), 15 states have internal predecessors, (18210), 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 21:55:30,063 INFO L175 Difference]: Start difference. First operand has 141 places, 427 transitions, 5199 flow. Second operand 14 states and 6498 transitions. [2023-11-06 21:55:30,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 616 transitions, 8225 flow [2023-11-06 21:55:32,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 616 transitions, 8146 flow, removed 38 selfloop flow, removed 3 redundant places. [2023-11-06 21:55:32,689 INFO L231 Difference]: Finished difference. Result has 156 places, 455 transitions, 5795 flow [2023-11-06 21:55:32,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1214, PETRI_DIFFERENCE_MINUEND_FLOW=5178, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5795, PETRI_PLACES=156, PETRI_TRANSITIONS=455} [2023-11-06 21:55:32,691 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 114 predicate places. [2023-11-06 21:55:32,691 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 455 transitions, 5795 flow [2023-11-06 21:55:32,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 455.1875) internal successors, (7283), 16 states have internal predecessors, (7283), 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 21:55:32,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:55:32,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:32,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 21:55:32,692 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 21:55:32,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:32,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1453972061, now seen corresponding path program 6 times [2023-11-06 21:55:32,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:32,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323746082] [2023-11-06 21:55:32,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:32,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:32,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:35,324 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:55:35,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:35,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323746082] [2023-11-06 21:55:35,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323746082] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:35,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:35,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 21:55:35,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123608641] [2023-11-06 21:55:35,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:35,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 21:55:35,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:35,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 21:55:35,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:55:37,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 475 out of 1214 [2023-11-06 21:55:37,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 455 transitions, 5795 flow. Second operand has 10 states, 10 states have (on average 478.5) internal successors, (4785), 10 states have internal predecessors, (4785), 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 21:55:37,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:55:37,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 475 of 1214 [2023-11-06 21:55:37,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:55:44,101 INFO L124 PetriNetUnfolderBase]: 9202/15822 cut-off events. [2023-11-06 21:55:44,102 INFO L125 PetriNetUnfolderBase]: For 131208/131208 co-relation queries the response was YES. [2023-11-06 21:55:44,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85683 conditions, 15822 events. 9202/15822 cut-off events. For 131208/131208 co-relation queries the response was YES. Maximal size of possible extension queue 997. Compared 123595 event pairs, 2316 based on Foata normal form. 1/15823 useless extension candidates. Maximal degree in co-relation 85631. Up to 8378 conditions per place. [2023-11-06 21:55:44,356 INFO L140 encePairwiseOnDemand]: 1203/1214 looper letters, 521 selfloop transitions, 125 changer transitions 7/653 dead transitions. [2023-11-06 21:55:44,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 653 transitions, 9043 flow [2023-11-06 21:55:44,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 21:55:44,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 21:55:44,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 4887 transitions. [2023-11-06 21:55:44,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025535420098847 [2023-11-06 21:55:44,367 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 4887 transitions. [2023-11-06 21:55:44,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 4887 transitions. [2023-11-06 21:55:44,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:55:44,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 4887 transitions. [2023-11-06 21:55:44,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 488.7) internal successors, (4887), 10 states have internal predecessors, (4887), 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 21:55:44,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1214.0) internal successors, (13354), 11 states have internal predecessors, (13354), 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 21:55:44,396 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1214.0) internal successors, (13354), 11 states have internal predecessors, (13354), 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 21:55:44,396 INFO L175 Difference]: Start difference. First operand has 156 places, 455 transitions, 5795 flow. Second operand 10 states and 4887 transitions. [2023-11-06 21:55:44,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 653 transitions, 9043 flow [2023-11-06 21:55:47,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 653 transitions, 8946 flow, removed 22 selfloop flow, removed 7 redundant places. [2023-11-06 21:55:47,783 INFO L231 Difference]: Finished difference. Result has 165 places, 496 transitions, 6828 flow [2023-11-06 21:55:47,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1214, PETRI_DIFFERENCE_MINUEND_FLOW=5751, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6828, PETRI_PLACES=165, PETRI_TRANSITIONS=496} [2023-11-06 21:55:47,784 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 123 predicate places. [2023-11-06 21:55:47,784 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 496 transitions, 6828 flow [2023-11-06 21:55:47,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 478.5) internal successors, (4785), 10 states have internal predecessors, (4785), 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 21:55:47,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:55:47,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:47,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 21:55:47,785 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 21:55:47,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:47,786 INFO L85 PathProgramCache]: Analyzing trace with hash -2055646845, now seen corresponding path program 7 times [2023-11-06 21:55:47,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:47,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221484516] [2023-11-06 21:55:47,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:47,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:48,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:49,665 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:55:49,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:49,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221484516] [2023-11-06 21:55:49,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221484516] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:49,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:49,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 21:55:49,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998246361] [2023-11-06 21:55:49,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:49,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 21:55:49,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:49,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 21:55:49,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:55:50,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 477 out of 1214 [2023-11-06 21:55:50,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 496 transitions, 6828 flow. Second operand has 10 states, 10 states have (on average 480.5) internal successors, (4805), 10 states have internal predecessors, (4805), 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 21:55:50,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:55:50,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 477 of 1214 [2023-11-06 21:55:50,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:56:01,483 INFO L124 PetriNetUnfolderBase]: 16008/27539 cut-off events. [2023-11-06 21:56:01,483 INFO L125 PetriNetUnfolderBase]: For 289373/289373 co-relation queries the response was YES. [2023-11-06 21:56:01,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154978 conditions, 27539 events. 16008/27539 cut-off events. For 289373/289373 co-relation queries the response was YES. Maximal size of possible extension queue 1681. Compared 234666 event pairs, 5171 based on Foata normal form. 2/27540 useless extension candidates. Maximal degree in co-relation 154919. Up to 10088 conditions per place. [2023-11-06 21:56:01,958 INFO L140 encePairwiseOnDemand]: 1201/1214 looper letters, 1035 selfloop transitions, 95 changer transitions 18/1148 dead transitions. [2023-11-06 21:56:01,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 1148 transitions, 16846 flow [2023-11-06 21:56:01,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 21:56:01,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-06 21:56:01,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 8372 transitions. [2023-11-06 21:56:01,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40565946312627194 [2023-11-06 21:56:01,978 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 8372 transitions. [2023-11-06 21:56:01,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 8372 transitions. [2023-11-06 21:56:01,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:56:01,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 8372 transitions. [2023-11-06 21:56:02,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 492.47058823529414) internal successors, (8372), 17 states have internal predecessors, (8372), 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 21:56:02,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 1214.0) internal successors, (21852), 18 states have internal predecessors, (21852), 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 21:56:02,047 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 1214.0) internal successors, (21852), 18 states have internal predecessors, (21852), 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 21:56:02,047 INFO L175 Difference]: Start difference. First operand has 165 places, 496 transitions, 6828 flow. Second operand 17 states and 8372 transitions. [2023-11-06 21:56:02,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 1148 transitions, 16846 flow [2023-11-06 21:56:11,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 1148 transitions, 16535 flow, removed 83 selfloop flow, removed 2 redundant places. [2023-11-06 21:56:11,552 INFO L231 Difference]: Finished difference. Result has 193 places, 581 transitions, 8256 flow [2023-11-06 21:56:11,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1214, PETRI_DIFFERENCE_MINUEND_FLOW=6702, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=8256, PETRI_PLACES=193, PETRI_TRANSITIONS=581} [2023-11-06 21:56:11,553 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 151 predicate places. [2023-11-06 21:56:11,553 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 581 transitions, 8256 flow [2023-11-06 21:56:11,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 480.5) internal successors, (4805), 10 states have internal predecessors, (4805), 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 21:56:11,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:56:11,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:56:11,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 21:56:11,555 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 21:56:11,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:56:11,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1825061813, now seen corresponding path program 8 times [2023-11-06 21:56:11,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:56:11,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300806024] [2023-11-06 21:56:11,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:56:11,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:56:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:13,635 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:56:13,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:56:13,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300806024] [2023-11-06 21:56:13,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300806024] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:56:13,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:56:13,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 21:56:13,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072373611] [2023-11-06 21:56:13,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:56:13,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 21:56:13,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:56:13,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 21:56:13,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-06 21:56:16,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 464 out of 1214 [2023-11-06 21:56:16,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 581 transitions, 8256 flow. Second operand has 13 states, 13 states have (on average 466.6923076923077) internal successors, (6067), 13 states have internal predecessors, (6067), 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 21:56:16,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:56:16,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 464 of 1214 [2023-11-06 21:56:16,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:56:27,229 INFO L124 PetriNetUnfolderBase]: 16363/28538 cut-off events. [2023-11-06 21:56:27,229 INFO L125 PetriNetUnfolderBase]: For 304665/304665 co-relation queries the response was YES. [2023-11-06 21:56:27,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167133 conditions, 28538 events. 16363/28538 cut-off events. For 304665/304665 co-relation queries the response was YES. Maximal size of possible extension queue 1756. Compared 250394 event pairs, 2537 based on Foata normal form. 1/28538 useless extension candidates. Maximal degree in co-relation 167060. Up to 9833 conditions per place. [2023-11-06 21:56:27,753 INFO L140 encePairwiseOnDemand]: 1200/1214 looper letters, 527 selfloop transitions, 353 changer transitions 7/887 dead transitions. [2023-11-06 21:56:27,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 887 transitions, 13611 flow [2023-11-06 21:56:27,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 21:56:27,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 21:56:27,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 5710 transitions. [2023-11-06 21:56:27,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39195496979681493 [2023-11-06 21:56:27,759 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 5710 transitions. [2023-11-06 21:56:27,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 5710 transitions. [2023-11-06 21:56:27,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:56:27,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 5710 transitions. [2023-11-06 21:56:27,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 475.8333333333333) internal successors, (5710), 12 states have internal predecessors, (5710), 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 21:56:27,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 1214.0) internal successors, (15782), 13 states have internal predecessors, (15782), 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 21:56:27,789 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 1214.0) internal successors, (15782), 13 states have internal predecessors, (15782), 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 21:56:27,789 INFO L175 Difference]: Start difference. First operand has 193 places, 581 transitions, 8256 flow. Second operand 12 states and 5710 transitions. [2023-11-06 21:56:27,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 887 transitions, 13611 flow [2023-11-06 21:56:41,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 887 transitions, 13449 flow, removed 80 selfloop flow, removed 3 redundant places. [2023-11-06 21:56:41,467 INFO L231 Difference]: Finished difference. Result has 206 places, 684 transitions, 11063 flow [2023-11-06 21:56:41,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1214, PETRI_DIFFERENCE_MINUEND_FLOW=8162, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11063, PETRI_PLACES=206, PETRI_TRANSITIONS=684} [2023-11-06 21:56:41,468 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 164 predicate places. [2023-11-06 21:56:41,468 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 684 transitions, 11063 flow [2023-11-06 21:56:41,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 466.6923076923077) internal successors, (6067), 13 states have internal predecessors, (6067), 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 21:56:41,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:56:41,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:56:41,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 21:56:41,469 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 21:56:41,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:56:41,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1191543773, now seen corresponding path program 9 times [2023-11-06 21:56:41,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:56:41,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728772042] [2023-11-06 21:56:41,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:56:41,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:56:41,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:43,080 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:56:43,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:56:43,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728772042] [2023-11-06 21:56:43,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728772042] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:56:43,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:56:43,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 21:56:43,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167159948] [2023-11-06 21:56:43,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:56:43,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 21:56:43,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:56:43,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 21:56:43,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-06 21:56:44,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 486 out of 1214 [2023-11-06 21:56:44,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 684 transitions, 11063 flow. Second operand has 9 states, 9 states have (on average 489.8888888888889) internal successors, (4409), 9 states have internal predecessors, (4409), 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 21:56:44,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:56:44,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 486 of 1214 [2023-11-06 21:56:44,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:56:55,824 INFO L124 PetriNetUnfolderBase]: 16363/28570 cut-off events. [2023-11-06 21:56:55,824 INFO L125 PetriNetUnfolderBase]: For 388295/388295 co-relation queries the response was YES. [2023-11-06 21:56:56,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178781 conditions, 28570 events. 16363/28570 cut-off events. For 388295/388295 co-relation queries the response was YES. Maximal size of possible extension queue 1766. Compared 249899 event pairs, 6255 based on Foata normal form. 1/28570 useless extension candidates. Maximal degree in co-relation 178703. Up to 19844 conditions per place. [2023-11-06 21:56:56,512 INFO L140 encePairwiseOnDemand]: 1204/1214 looper letters, 746 selfloop transitions, 91 changer transitions 8/845 dead transitions. [2023-11-06 21:56:56,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 845 transitions, 14723 flow [2023-11-06 21:56:56,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 21:56:56,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 21:56:56,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4521 transitions. [2023-11-06 21:56:56,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.413783635365184 [2023-11-06 21:56:56,522 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4521 transitions. [2023-11-06 21:56:56,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4521 transitions. [2023-11-06 21:56:56,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:56:56,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4521 transitions. [2023-11-06 21:56:56,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 502.3333333333333) internal successors, (4521), 9 states have internal predecessors, (4521), 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 21:56:56,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1214.0) internal successors, (12140), 10 states have internal predecessors, (12140), 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 21:56:56,552 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1214.0) internal successors, (12140), 10 states have internal predecessors, (12140), 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 21:56:56,552 INFO L175 Difference]: Start difference. First operand has 206 places, 684 transitions, 11063 flow. Second operand 9 states and 4521 transitions. [2023-11-06 21:56:56,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 845 transitions, 14723 flow [2023-11-06 21:57:16,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 845 transitions, 14378 flow, removed 102 selfloop flow, removed 5 redundant places. [2023-11-06 21:57:16,987 INFO L231 Difference]: Finished difference. Result has 214 places, 701 transitions, 11371 flow [2023-11-06 21:57:16,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1214, PETRI_DIFFERENCE_MINUEND_FLOW=10783, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=594, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11371, PETRI_PLACES=214, PETRI_TRANSITIONS=701} [2023-11-06 21:57:16,988 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 172 predicate places. [2023-11-06 21:57:16,988 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 701 transitions, 11371 flow [2023-11-06 21:57:16,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 489.8888888888889) internal successors, (4409), 9 states have internal predecessors, (4409), 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 21:57:16,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:16,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:16,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 21:57:16,990 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 21:57:16,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:16,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1439670774, now seen corresponding path program 1 times [2023-11-06 21:57:16,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:16,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960499686] [2023-11-06 21:57:16,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:16,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:17,244 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:57:17,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:17,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960499686] [2023-11-06 21:57:17,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960499686] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:17,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:17,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:57:17,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745150318] [2023-11-06 21:57:17,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:17,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:57:17,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:17,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:57:17,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:57:17,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 508 out of 1214 [2023-11-06 21:57:17,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 701 transitions, 11371 flow. Second operand has 4 states, 4 states have (on average 516.75) internal successors, (2067), 4 states have internal predecessors, (2067), 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 21:57:17,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:17,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 508 of 1214 [2023-11-06 21:57:17,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand