./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f2fff04-ac67-4189-962a-bd6ff45da09f/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f2fff04-ac67-4189-962a-bd6ff45da09f/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f2fff04-ac67-4189-962a-bd6ff45da09f/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f2fff04-ac67-4189-962a-bd6ff45da09f/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f2fff04-ac67-4189-962a-bd6ff45da09f/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f2fff04-ac67-4189-962a-bd6ff45da09f/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d87195cdf1d0fd4bcadf67f37be6f46388ea22a2ec77b383d012327e126a2173 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:17:51,575 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:17:51,667 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f2fff04-ac67-4189-962a-bd6ff45da09f/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:17:51,671 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:17:51,672 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:17:51,703 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:17:51,704 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:17:51,705 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:17:51,705 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:17:51,706 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:17:51,707 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:17:51,707 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:17:51,708 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:17:51,709 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:17:51,709 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:17:51,710 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:17:51,710 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:17:51,711 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:17:51,711 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:17:51,716 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:17:51,721 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:17:51,722 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:17:51,722 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:17:51,724 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:17:51,725 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:17:51,726 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:17:51,726 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:17:51,726 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:17:51,727 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:17:51,727 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:17:51,729 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:17:51,729 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:17:51,729 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:17:51,729 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:17:51,730 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:17:51,730 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:17:51,730 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:17:51,730 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:17:51,731 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:17:51,731 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_1f2fff04-ac67-4189-962a-bd6ff45da09f/bin/uautomizer-verify-uTZkv6EMXl/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f2fff04-ac67-4189-962a-bd6ff45da09f/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d87195cdf1d0fd4bcadf67f37be6f46388ea22a2ec77b383d012327e126a2173 [2023-11-12 02:17:52,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:17:52,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:17:52,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:17:52,105 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:17:52,105 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:17:52,107 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f2fff04-ac67-4189-962a-bd6ff45da09f/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2023-11-12 02:17:55,387 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:17:55,667 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:17:55,668 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f2fff04-ac67-4189-962a-bd6ff45da09f/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2023-11-12 02:17:55,677 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f2fff04-ac67-4189-962a-bd6ff45da09f/bin/uautomizer-verify-uTZkv6EMXl/data/fa11c36bb/fe40ded97a674689a7593b88f77a3664/FLAGd9510237f [2023-11-12 02:17:55,694 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f2fff04-ac67-4189-962a-bd6ff45da09f/bin/uautomizer-verify-uTZkv6EMXl/data/fa11c36bb/fe40ded97a674689a7593b88f77a3664 [2023-11-12 02:17:55,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:17:55,699 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:17:55,701 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:17:55,701 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:17:55,707 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:17:55,708 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:17:55" (1/1) ... [2023-11-12 02:17:55,710 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a821e1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:55, skipping insertion in model container [2023-11-12 02:17:55,710 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:17:55" (1/1) ... [2023-11-12 02:17:55,739 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:17:55,937 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_1f2fff04-ac67-4189-962a-bd6ff45da09f/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c[3578,3591] [2023-11-12 02:17:55,943 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:17:55,954 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:17:55,983 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_1f2fff04-ac67-4189-962a-bd6ff45da09f/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c[3578,3591] [2023-11-12 02:17:55,984 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:17:55,993 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:17:55,993 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:17:56,001 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:17:56,002 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:56 WrapperNode [2023-11-12 02:17:56,002 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:17:56,004 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:17:56,004 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:17:56,004 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:17:56,012 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:56" (1/1) ... [2023-11-12 02:17:56,022 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:56" (1/1) ... [2023-11-12 02:17:56,054 INFO L138 Inliner]: procedures = 23, calls = 70, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 209 [2023-11-12 02:17:56,055 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:17:56,056 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:17:56,056 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:17:56,056 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:17:56,066 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:56" (1/1) ... [2023-11-12 02:17:56,066 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:56" (1/1) ... [2023-11-12 02:17:56,070 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:56" (1/1) ... [2023-11-12 02:17:56,070 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:56" (1/1) ... [2023-11-12 02:17:56,078 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:56" (1/1) ... [2023-11-12 02:17:56,080 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:56" (1/1) ... [2023-11-12 02:17:56,083 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:56" (1/1) ... [2023-11-12 02:17:56,084 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:56" (1/1) ... [2023-11-12 02:17:56,088 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:17:56,089 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:17:56,089 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:17:56,090 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:17:56,091 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:56" (1/1) ... [2023-11-12 02:17:56,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:17:56,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f2fff04-ac67-4189-962a-bd6ff45da09f/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:56,129 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f2fff04-ac67-4189-962a-bd6ff45da09f/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:17:56,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f2fff04-ac67-4189-962a-bd6ff45da09f/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:17:56,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:17:56,183 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 02:17:56,183 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 02:17:56,183 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 02:17:56,183 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 02:17:56,184 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-12 02:17:56,184 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-12 02:17:56,184 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-12 02:17:56,184 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-12 02:17:56,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:17:56,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:17:56,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:17:56,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:17:56,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:17:56,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:17:56,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:17:56,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:17:56,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:17:56,187 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:17:56,309 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:17:56,311 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:17:56,703 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:17:56,805 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:17:56,805 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:17:56,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:17:56 BoogieIcfgContainer [2023-11-12 02:17:56,808 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:17:56,820 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:17:56,821 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:17:56,824 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:17:56,825 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:17:55" (1/3) ... [2023-11-12 02:17:56,825 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9549128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:17:56, skipping insertion in model container [2023-11-12 02:17:56,826 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:56" (2/3) ... [2023-11-12 02:17:56,826 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9549128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:17:56, skipping insertion in model container [2023-11-12 02:17:56,826 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:17:56" (3/3) ... [2023-11-12 02:17:56,831 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2023-11-12 02:17:56,840 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:17:56,850 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:17:56,851 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:17:56,851 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:17:57,009 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-12 02:17:57,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 150 transitions, 328 flow [2023-11-12 02:17:57,152 INFO L124 PetriNetUnfolderBase]: 2/146 cut-off events. [2023-11-12 02:17:57,152 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-12 02:17:57,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 146 events. 2/146 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 67 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 108. Up to 2 conditions per place. [2023-11-12 02:17:57,157 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 150 transitions, 328 flow [2023-11-12 02:17:57,164 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 133 transitions, 290 flow [2023-11-12 02:17:57,168 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:17:57,181 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 144 places, 133 transitions, 290 flow [2023-11-12 02:17:57,190 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 144 places, 133 transitions, 290 flow [2023-11-12 02:17:57,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 133 transitions, 290 flow [2023-11-12 02:17:57,253 INFO L124 PetriNetUnfolderBase]: 2/133 cut-off events. [2023-11-12 02:17:57,253 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-12 02:17:57,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 133 events. 2/133 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 108. Up to 2 conditions per place. [2023-11-12 02:17:57,257 INFO L119 LiptonReduction]: Number of co-enabled transitions 1596 [2023-11-12 02:18:03,451 INFO L134 LiptonReduction]: Checked pairs total: 7645 [2023-11-12 02:18:03,451 INFO L136 LiptonReduction]: Total number of compositions: 110 [2023-11-12 02:18:03,469 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:18:03,477 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@580a4d19, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:18:03,478 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-12 02:18:03,498 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:18:03,499 INFO L124 PetriNetUnfolderBase]: 0/33 cut-off events. [2023-11-12 02:18:03,499 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-12 02:18:03,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:03,500 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] [2023-11-12 02:18:03,501 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 2 more)] === [2023-11-12 02:18:03,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:03,512 INFO L85 PathProgramCache]: Analyzing trace with hash -597608030, now seen corresponding path program 1 times [2023-11-12 02:18:03,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:03,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059093937] [2023-11-12 02:18:03,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:03,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:03,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:04,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:04,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:04,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059093937] [2023-11-12 02:18:04,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059093937] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:04,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:04,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:18:04,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301080452] [2023-11-12 02:18:04,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:04,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:18:04,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:05,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:18:05,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:18:05,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 260 [2023-11-12 02:18:05,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 34 transitions, 92 flow. Second operand has 6 states, 6 states have (on average 123.66666666666667) internal successors, (742), 6 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:05,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:05,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 260 [2023-11-12 02:18:05,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:06,733 INFO L124 PetriNetUnfolderBase]: 7775/10913 cut-off events. [2023-11-12 02:18:06,734 INFO L125 PetriNetUnfolderBase]: For 801/801 co-relation queries the response was YES. [2023-11-12 02:18:06,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22599 conditions, 10913 events. 7775/10913 cut-off events. For 801/801 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 53448 event pairs, 2526 based on Foata normal form. 1/10914 useless extension candidates. Maximal degree in co-relation 18736. Up to 5005 conditions per place. [2023-11-12 02:18:06,835 INFO L140 encePairwiseOnDemand]: 253/260 looper letters, 78 selfloop transitions, 9 changer transitions 9/96 dead transitions. [2023-11-12 02:18:06,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 96 transitions, 441 flow [2023-11-12 02:18:06,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:18:06,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:18:06,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 687 transitions. [2023-11-12 02:18:06,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5284615384615384 [2023-11-12 02:18:06,867 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 687 transitions. [2023-11-12 02:18:06,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 687 transitions. [2023-11-12 02:18:06,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:06,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 687 transitions. [2023-11-12 02:18:06,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 137.4) internal successors, (687), 5 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:06,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 260.0) internal successors, (1560), 6 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:06,897 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 260.0) internal successors, (1560), 6 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:06,899 INFO L175 Difference]: Start difference. First operand has 47 places, 34 transitions, 92 flow. Second operand 5 states and 687 transitions. [2023-11-12 02:18:06,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 96 transitions, 441 flow [2023-11-12 02:18:06,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 96 transitions, 403 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-12 02:18:06,933 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 137 flow [2023-11-12 02:18:06,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=137, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2023-11-12 02:18:06,940 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -1 predicate places. [2023-11-12 02:18:06,940 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 137 flow [2023-11-12 02:18:06,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 123.66666666666667) internal successors, (742), 6 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:06,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:06,942 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] [2023-11-12 02:18:06,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:18:06,944 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 2 more)] === [2023-11-12 02:18:06,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:06,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1528532974, now seen corresponding path program 2 times [2023-11-12 02:18:06,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:06,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131073746] [2023-11-12 02:18:06,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:06,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:07,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:07,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:07,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131073746] [2023-11-12 02:18:07,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131073746] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:07,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:07,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:18:07,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659847885] [2023-11-12 02:18:07,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:07,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:18:07,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:07,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:18:07,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:18:07,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 260 [2023-11-12 02:18:07,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 137 flow. Second operand has 7 states, 7 states have (on average 126.14285714285714) internal successors, (883), 7 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:07,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:07,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 260 [2023-11-12 02:18:07,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:08,012 INFO L124 PetriNetUnfolderBase]: 3051/4788 cut-off events. [2023-11-12 02:18:08,012 INFO L125 PetriNetUnfolderBase]: For 658/820 co-relation queries the response was YES. [2023-11-12 02:18:08,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10425 conditions, 4788 events. 3051/4788 cut-off events. For 658/820 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 28236 event pairs, 719 based on Foata normal form. 16/4600 useless extension candidates. Maximal degree in co-relation 6733. Up to 3208 conditions per place. [2023-11-12 02:18:08,056 INFO L140 encePairwiseOnDemand]: 250/260 looper letters, 69 selfloop transitions, 29 changer transitions 0/110 dead transitions. [2023-11-12 02:18:08,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 110 transitions, 480 flow [2023-11-12 02:18:08,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:18:08,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:18:08,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 953 transitions. [2023-11-12 02:18:08,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5236263736263737 [2023-11-12 02:18:08,061 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 953 transitions. [2023-11-12 02:18:08,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 953 transitions. [2023-11-12 02:18:08,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:08,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 953 transitions. [2023-11-12 02:18:08,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 136.14285714285714) internal successors, (953), 7 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:08,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 260.0) internal successors, (2080), 8 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:08,072 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 260.0) internal successors, (2080), 8 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:08,072 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 137 flow. Second operand 7 states and 953 transitions. [2023-11-12 02:18:08,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 110 transitions, 480 flow [2023-11-12 02:18:08,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 110 transitions, 469 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-12 02:18:08,078 INFO L231 Difference]: Finished difference. Result has 51 places, 72 transitions, 274 flow [2023-11-12 02:18:08,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=274, PETRI_PLACES=51, PETRI_TRANSITIONS=72} [2023-11-12 02:18:08,080 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 4 predicate places. [2023-11-12 02:18:08,080 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 72 transitions, 274 flow [2023-11-12 02:18:08,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.14285714285714) internal successors, (883), 7 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:08,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:08,081 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] [2023-11-12 02:18:08,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:18:08,082 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 2 more)] === [2023-11-12 02:18:08,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:08,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1923327776, now seen corresponding path program 3 times [2023-11-12 02:18:08,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:08,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387587244] [2023-11-12 02:18:08,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:08,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:08,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:08,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:08,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:08,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387587244] [2023-11-12 02:18:08,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387587244] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:08,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:08,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:18:08,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280757564] [2023-11-12 02:18:08,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:08,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:18:08,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:08,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:18:08,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:18:08,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 260 [2023-11-12 02:18:08,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 72 transitions, 274 flow. Second operand has 5 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:08,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:08,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 260 [2023-11-12 02:18:08,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:09,171 INFO L124 PetriNetUnfolderBase]: 3360/5283 cut-off events. [2023-11-12 02:18:09,172 INFO L125 PetriNetUnfolderBase]: For 2242/2835 co-relation queries the response was YES. [2023-11-12 02:18:09,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14112 conditions, 5283 events. 3360/5283 cut-off events. For 2242/2835 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 31773 event pairs, 1065 based on Foata normal form. 146/5155 useless extension candidates. Maximal degree in co-relation 6220. Up to 3355 conditions per place. [2023-11-12 02:18:09,237 INFO L140 encePairwiseOnDemand]: 250/260 looper letters, 69 selfloop transitions, 31 changer transitions 0/112 dead transitions. [2023-11-12 02:18:09,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 112 transitions, 597 flow [2023-11-12 02:18:09,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:18:09,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:18:09,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 684 transitions. [2023-11-12 02:18:09,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5261538461538462 [2023-11-12 02:18:09,242 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 684 transitions. [2023-11-12 02:18:09,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 684 transitions. [2023-11-12 02:18:09,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:09,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 684 transitions. [2023-11-12 02:18:09,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.8) internal successors, (684), 5 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:09,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 260.0) internal successors, (1560), 6 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:09,251 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 260.0) internal successors, (1560), 6 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:09,251 INFO L175 Difference]: Start difference. First operand has 51 places, 72 transitions, 274 flow. Second operand 5 states and 684 transitions. [2023-11-12 02:18:09,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 112 transitions, 597 flow [2023-11-12 02:18:09,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 112 transitions, 597 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:18:09,262 INFO L231 Difference]: Finished difference. Result has 56 places, 80 transitions, 383 flow [2023-11-12 02:18:09,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=383, PETRI_PLACES=56, PETRI_TRANSITIONS=80} [2023-11-12 02:18:09,264 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 9 predicate places. [2023-11-12 02:18:09,267 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 80 transitions, 383 flow [2023-11-12 02:18:09,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:09,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:09,269 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] [2023-11-12 02:18:09,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:18:09,270 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 2 more)] === [2023-11-12 02:18:09,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:09,271 INFO L85 PathProgramCache]: Analyzing trace with hash -639331052, now seen corresponding path program 4 times [2023-11-12 02:18:09,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:09,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328899958] [2023-11-12 02:18:09,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:09,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:09,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:09,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:09,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328899958] [2023-11-12 02:18:09,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328899958] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:09,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:09,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:18:09,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931211049] [2023-11-12 02:18:09,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:09,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:18:09,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:09,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:18:09,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:18:09,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 260 [2023-11-12 02:18:09,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 80 transitions, 383 flow. Second operand has 6 states, 6 states have (on average 123.66666666666667) internal successors, (742), 6 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:09,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:09,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 260 [2023-11-12 02:18:09,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:11,474 INFO L124 PetriNetUnfolderBase]: 8344/11838 cut-off events. [2023-11-12 02:18:11,474 INFO L125 PetriNetUnfolderBase]: For 10096/10096 co-relation queries the response was YES. [2023-11-12 02:18:11,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36081 conditions, 11838 events. 8344/11838 cut-off events. For 10096/10096 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 60487 event pairs, 1697 based on Foata normal form. 1/11839 useless extension candidates. Maximal degree in co-relation 13517. Up to 5361 conditions per place. [2023-11-12 02:18:11,559 INFO L140 encePairwiseOnDemand]: 253/260 looper letters, 174 selfloop transitions, 12 changer transitions 29/215 dead transitions. [2023-11-12 02:18:11,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 215 transitions, 1431 flow [2023-11-12 02:18:11,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:18:11,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:18:11,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 822 transitions. [2023-11-12 02:18:11,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5269230769230769 [2023-11-12 02:18:11,565 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 822 transitions. [2023-11-12 02:18:11,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 822 transitions. [2023-11-12 02:18:11,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:11,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 822 transitions. [2023-11-12 02:18:11,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:11,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:11,576 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:11,576 INFO L175 Difference]: Start difference. First operand has 56 places, 80 transitions, 383 flow. Second operand 6 states and 822 transitions. [2023-11-12 02:18:11,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 215 transitions, 1431 flow [2023-11-12 02:18:11,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 215 transitions, 1370 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:18:11,603 INFO L231 Difference]: Finished difference. Result has 62 places, 81 transitions, 414 flow [2023-11-12 02:18:11,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=414, PETRI_PLACES=62, PETRI_TRANSITIONS=81} [2023-11-12 02:18:11,604 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 15 predicate places. [2023-11-12 02:18:11,605 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 81 transitions, 414 flow [2023-11-12 02:18:11,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 123.66666666666667) internal successors, (742), 6 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:11,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:11,606 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] [2023-11-12 02:18:11,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:18:11,606 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 2 more)] === [2023-11-12 02:18:11,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:11,607 INFO L85 PathProgramCache]: Analyzing trace with hash 525668298, now seen corresponding path program 5 times [2023-11-12 02:18:11,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:11,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345512236] [2023-11-12 02:18:11,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:11,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:11,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:11,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:11,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:11,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345512236] [2023-11-12 02:18:11,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345512236] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:11,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:11,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:18:11,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416810581] [2023-11-12 02:18:11,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:11,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:18:11,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:11,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:18:11,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:18:11,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 260 [2023-11-12 02:18:11,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 81 transitions, 414 flow. Second operand has 6 states, 6 states have (on average 126.83333333333333) internal successors, (761), 6 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:11,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:11,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 260 [2023-11-12 02:18:11,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:12,891 INFO L124 PetriNetUnfolderBase]: 3123/5049 cut-off events. [2023-11-12 02:18:12,892 INFO L125 PetriNetUnfolderBase]: For 6092/6998 co-relation queries the response was YES. [2023-11-12 02:18:12,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15422 conditions, 5049 events. 3123/5049 cut-off events. For 6092/6998 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 30391 event pairs, 625 based on Foata normal form. 268/5159 useless extension candidates. Maximal degree in co-relation 9929. Up to 3014 conditions per place. [2023-11-12 02:18:12,941 INFO L140 encePairwiseOnDemand]: 250/260 looper letters, 68 selfloop transitions, 39 changer transitions 0/122 dead transitions. [2023-11-12 02:18:12,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 122 transitions, 765 flow [2023-11-12 02:18:12,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:18:12,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:18:12,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 818 transitions. [2023-11-12 02:18:12,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5243589743589744 [2023-11-12 02:18:12,946 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 818 transitions. [2023-11-12 02:18:12,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 818 transitions. [2023-11-12 02:18:12,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:12,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 818 transitions. [2023-11-12 02:18:12,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 136.33333333333334) internal successors, (818), 6 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:12,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:12,954 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:12,955 INFO L175 Difference]: Start difference. First operand has 62 places, 81 transitions, 414 flow. Second operand 6 states and 818 transitions. [2023-11-12 02:18:12,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 122 transitions, 765 flow [2023-11-12 02:18:12,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 122 transitions, 716 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-11-12 02:18:12,972 INFO L231 Difference]: Finished difference. Result has 62 places, 88 transitions, 493 flow [2023-11-12 02:18:12,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=493, PETRI_PLACES=62, PETRI_TRANSITIONS=88} [2023-11-12 02:18:12,975 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 15 predicate places. [2023-11-12 02:18:12,976 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 88 transitions, 493 flow [2023-11-12 02:18:12,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 126.83333333333333) internal successors, (761), 6 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:12,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:12,977 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] [2023-11-12 02:18:12,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:18:12,977 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 2 more)] === [2023-11-12 02:18:12,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:12,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1513670504, now seen corresponding path program 6 times [2023-11-12 02:18:12,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:12,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98762347] [2023-11-12 02:18:12,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:12,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:13,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:13,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:13,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:13,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98762347] [2023-11-12 02:18:13,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98762347] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:13,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:13,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:18:13,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675280369] [2023-11-12 02:18:13,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:13,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:18:13,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:13,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:18:13,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:18:13,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 260 [2023-11-12 02:18:13,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 88 transitions, 493 flow. Second operand has 6 states, 6 states have (on average 126.83333333333333) internal successors, (761), 6 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:13,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:13,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 260 [2023-11-12 02:18:13,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:14,113 INFO L124 PetriNetUnfolderBase]: 2914/4855 cut-off events. [2023-11-12 02:18:14,114 INFO L125 PetriNetUnfolderBase]: For 6728/7324 co-relation queries the response was YES. [2023-11-12 02:18:14,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14771 conditions, 4855 events. 2914/4855 cut-off events. For 6728/7324 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 30058 event pairs, 584 based on Foata normal form. 264/4995 useless extension candidates. Maximal degree in co-relation 7199. Up to 2831 conditions per place. [2023-11-12 02:18:14,160 INFO L140 encePairwiseOnDemand]: 250/260 looper letters, 66 selfloop transitions, 46 changer transitions 0/127 dead transitions. [2023-11-12 02:18:14,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 127 transitions, 869 flow [2023-11-12 02:18:14,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:18:14,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:18:14,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 816 transitions. [2023-11-12 02:18:14,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5230769230769231 [2023-11-12 02:18:14,165 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 816 transitions. [2023-11-12 02:18:14,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 816 transitions. [2023-11-12 02:18:14,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:14,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 816 transitions. [2023-11-12 02:18:14,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 136.0) internal successors, (816), 6 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:14,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:14,176 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:14,176 INFO L175 Difference]: Start difference. First operand has 62 places, 88 transitions, 493 flow. Second operand 6 states and 816 transitions. [2023-11-12 02:18:14,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 127 transitions, 869 flow [2023-11-12 02:18:14,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 127 transitions, 817 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-12 02:18:14,188 INFO L231 Difference]: Finished difference. Result has 65 places, 95 transitions, 604 flow [2023-11-12 02:18:14,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=604, PETRI_PLACES=65, PETRI_TRANSITIONS=95} [2023-11-12 02:18:14,191 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 18 predicate places. [2023-11-12 02:18:14,191 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 95 transitions, 604 flow [2023-11-12 02:18:14,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 126.83333333333333) internal successors, (761), 6 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:14,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:14,192 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] [2023-11-12 02:18:14,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:18:14,193 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 2 more)] === [2023-11-12 02:18:14,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:14,193 INFO L85 PathProgramCache]: Analyzing trace with hash 281097536, now seen corresponding path program 7 times [2023-11-12 02:18:14,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:14,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171377027] [2023-11-12 02:18:14,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:14,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:14,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:14,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:14,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:14,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171377027] [2023-11-12 02:18:14,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171377027] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:14,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:14,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:18:14,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593422781] [2023-11-12 02:18:14,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:14,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:18:14,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:14,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:18:14,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:18:14,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 260 [2023-11-12 02:18:14,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 95 transitions, 604 flow. Second operand has 5 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:14,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:14,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 260 [2023-11-12 02:18:14,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:15,031 INFO L124 PetriNetUnfolderBase]: 2701/4486 cut-off events. [2023-11-12 02:18:15,032 INFO L125 PetriNetUnfolderBase]: For 8050/8927 co-relation queries the response was YES. [2023-11-12 02:18:15,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14031 conditions, 4486 events. 2701/4486 cut-off events. For 8050/8927 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 27263 event pairs, 734 based on Foata normal form. 324/4682 useless extension candidates. Maximal degree in co-relation 7017. Up to 2676 conditions per place. [2023-11-12 02:18:15,073 INFO L140 encePairwiseOnDemand]: 250/260 looper letters, 65 selfloop transitions, 51 changer transitions 0/131 dead transitions. [2023-11-12 02:18:15,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 131 transitions, 1003 flow [2023-11-12 02:18:15,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:18:15,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:18:15,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 680 transitions. [2023-11-12 02:18:15,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5230769230769231 [2023-11-12 02:18:15,077 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 680 transitions. [2023-11-12 02:18:15,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 680 transitions. [2023-11-12 02:18:15,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:15,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 680 transitions. [2023-11-12 02:18:15,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:15,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 260.0) internal successors, (1560), 6 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:15,084 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 260.0) internal successors, (1560), 6 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:15,085 INFO L175 Difference]: Start difference. First operand has 65 places, 95 transitions, 604 flow. Second operand 5 states and 680 transitions. [2023-11-12 02:18:15,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 131 transitions, 1003 flow [2023-11-12 02:18:15,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 131 transitions, 929 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-11-12 02:18:15,105 INFO L231 Difference]: Finished difference. Result has 66 places, 103 transitions, 728 flow [2023-11-12 02:18:15,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=728, PETRI_PLACES=66, PETRI_TRANSITIONS=103} [2023-11-12 02:18:15,106 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 19 predicate places. [2023-11-12 02:18:15,106 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 103 transitions, 728 flow [2023-11-12 02:18:15,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:15,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:15,107 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] [2023-11-12 02:18:15,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:18:15,108 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 2 more)] === [2023-11-12 02:18:15,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:15,108 INFO L85 PathProgramCache]: Analyzing trace with hash 836898894, now seen corresponding path program 8 times [2023-11-12 02:18:15,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:15,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385339301] [2023-11-12 02:18:15,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:15,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:15,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:15,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:15,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:15,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385339301] [2023-11-12 02:18:15,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385339301] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:15,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:15,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:18:15,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081061088] [2023-11-12 02:18:15,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:15,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:18:15,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:15,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:18:15,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:18:15,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 260 [2023-11-12 02:18:15,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 103 transitions, 728 flow. Second operand has 8 states, 8 states have (on average 124.625) internal successors, (997), 8 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:15,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:15,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 260 [2023-11-12 02:18:15,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:16,306 INFO L124 PetriNetUnfolderBase]: 3688/6151 cut-off events. [2023-11-12 02:18:16,307 INFO L125 PetriNetUnfolderBase]: For 12841/14494 co-relation queries the response was YES. [2023-11-12 02:18:16,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19315 conditions, 6151 events. 3688/6151 cut-off events. For 12841/14494 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 40183 event pairs, 664 based on Foata normal form. 594/6527 useless extension candidates. Maximal degree in co-relation 8905. Up to 2743 conditions per place. [2023-11-12 02:18:16,366 INFO L140 encePairwiseOnDemand]: 250/260 looper letters, 90 selfloop transitions, 74 changer transitions 0/179 dead transitions. [2023-11-12 02:18:16,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 179 transitions, 1381 flow [2023-11-12 02:18:16,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:18:16,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-12 02:18:16,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1216 transitions. [2023-11-12 02:18:16,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5196581196581197 [2023-11-12 02:18:16,373 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1216 transitions. [2023-11-12 02:18:16,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1216 transitions. [2023-11-12 02:18:16,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:16,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1216 transitions. [2023-11-12 02:18:16,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 135.11111111111111) internal successors, (1216), 9 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:16,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 260.0) internal successors, (2600), 10 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:16,386 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 260.0) internal successors, (2600), 10 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:16,387 INFO L175 Difference]: Start difference. First operand has 66 places, 103 transitions, 728 flow. Second operand 9 states and 1216 transitions. [2023-11-12 02:18:16,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 179 transitions, 1381 flow [2023-11-12 02:18:16,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 179 transitions, 1295 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-11-12 02:18:16,408 INFO L231 Difference]: Finished difference. Result has 73 places, 120 transitions, 995 flow [2023-11-12 02:18:16,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=995, PETRI_PLACES=73, PETRI_TRANSITIONS=120} [2023-11-12 02:18:16,411 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 26 predicate places. [2023-11-12 02:18:16,411 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 120 transitions, 995 flow [2023-11-12 02:18:16,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 124.625) internal successors, (997), 8 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:16,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:16,412 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] [2023-11-12 02:18:16,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:18:16,413 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 2 more)] === [2023-11-12 02:18:16,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:16,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1937804380, now seen corresponding path program 9 times [2023-11-12 02:18:16,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:16,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153848046] [2023-11-12 02:18:16,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:16,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:16,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:16,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:16,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:16,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153848046] [2023-11-12 02:18:16,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153848046] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:16,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:16,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:18:16,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938128765] [2023-11-12 02:18:16,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:16,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:18:16,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:16,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:18:16,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:18:16,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 260 [2023-11-12 02:18:16,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 120 transitions, 995 flow. Second operand has 5 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:16,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:16,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 260 [2023-11-12 02:18:16,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:17,429 INFO L124 PetriNetUnfolderBase]: 3381/5720 cut-off events. [2023-11-12 02:18:17,429 INFO L125 PetriNetUnfolderBase]: For 16194/17484 co-relation queries the response was YES. [2023-11-12 02:18:17,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19742 conditions, 5720 events. 3381/5720 cut-off events. For 16194/17484 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 37063 event pairs, 967 based on Foata normal form. 274/5796 useless extension candidates. Maximal degree in co-relation 9449. Up to 3670 conditions per place. [2023-11-12 02:18:17,497 INFO L140 encePairwiseOnDemand]: 250/260 looper letters, 69 selfloop transitions, 64 changer transitions 3/151 dead transitions. [2023-11-12 02:18:17,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 151 transitions, 1431 flow [2023-11-12 02:18:17,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:18:17,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:18:17,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 678 transitions. [2023-11-12 02:18:17,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5215384615384615 [2023-11-12 02:18:17,501 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 678 transitions. [2023-11-12 02:18:17,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 678 transitions. [2023-11-12 02:18:17,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:17,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 678 transitions. [2023-11-12 02:18:17,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 135.6) internal successors, (678), 5 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:17,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 260.0) internal successors, (1560), 6 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:17,510 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 260.0) internal successors, (1560), 6 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:17,510 INFO L175 Difference]: Start difference. First operand has 73 places, 120 transitions, 995 flow. Second operand 5 states and 678 transitions. [2023-11-12 02:18:17,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 151 transitions, 1431 flow [2023-11-12 02:18:17,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 151 transitions, 1388 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-12 02:18:17,610 INFO L231 Difference]: Finished difference. Result has 75 places, 124 transitions, 1167 flow [2023-11-12 02:18:17,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=946, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1167, PETRI_PLACES=75, PETRI_TRANSITIONS=124} [2023-11-12 02:18:17,611 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 28 predicate places. [2023-11-12 02:18:17,611 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 124 transitions, 1167 flow [2023-11-12 02:18:17,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:17,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:17,612 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] [2023-11-12 02:18:17,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:18:17,613 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 2 more)] === [2023-11-12 02:18:17,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:17,613 INFO L85 PathProgramCache]: Analyzing trace with hash -179096986, now seen corresponding path program 10 times [2023-11-12 02:18:17,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:17,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471856641] [2023-11-12 02:18:17,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:17,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:17,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:17,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:17,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:17,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471856641] [2023-11-12 02:18:17,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471856641] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:17,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:17,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:18:17,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827862748] [2023-11-12 02:18:17,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:17,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:18:17,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:17,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:18:17,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:18:17,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 260 [2023-11-12 02:18:17,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 124 transitions, 1167 flow. Second operand has 8 states, 8 states have (on average 124.625) internal successors, (997), 8 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:17,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:17,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 260 [2023-11-12 02:18:17,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:19,273 INFO L124 PetriNetUnfolderBase]: 4935/8394 cut-off events. [2023-11-12 02:18:19,273 INFO L125 PetriNetUnfolderBase]: For 21533/23553 co-relation queries the response was YES. [2023-11-12 02:18:19,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29351 conditions, 8394 events. 4935/8394 cut-off events. For 21533/23553 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 59404 event pairs, 815 based on Foata normal form. 344/8458 useless extension candidates. Maximal degree in co-relation 11550. Up to 3097 conditions per place. [2023-11-12 02:18:19,366 INFO L140 encePairwiseOnDemand]: 250/260 looper letters, 98 selfloop transitions, 95 changer transitions 0/208 dead transitions. [2023-11-12 02:18:19,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 208 transitions, 1888 flow [2023-11-12 02:18:19,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:18:19,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-12 02:18:19,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1220 transitions. [2023-11-12 02:18:19,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5213675213675214 [2023-11-12 02:18:19,372 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1220 transitions. [2023-11-12 02:18:19,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1220 transitions. [2023-11-12 02:18:19,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:19,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1220 transitions. [2023-11-12 02:18:19,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 135.55555555555554) internal successors, (1220), 9 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:19,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 260.0) internal successors, (2600), 10 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:19,384 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 260.0) internal successors, (2600), 10 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:19,384 INFO L175 Difference]: Start difference. First operand has 75 places, 124 transitions, 1167 flow. Second operand 9 states and 1220 transitions. [2023-11-12 02:18:19,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 208 transitions, 1888 flow [2023-11-12 02:18:19,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 208 transitions, 1795 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-11-12 02:18:19,479 INFO L231 Difference]: Finished difference. Result has 82 places, 144 transitions, 1491 flow [2023-11-12 02:18:19,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=1082, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1491, PETRI_PLACES=82, PETRI_TRANSITIONS=144} [2023-11-12 02:18:19,480 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 35 predicate places. [2023-11-12 02:18:19,480 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 144 transitions, 1491 flow [2023-11-12 02:18:19,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 124.625) internal successors, (997), 8 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:19,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:19,481 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] [2023-11-12 02:18:19,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:18:19,482 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 2 more)] === [2023-11-12 02:18:19,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:19,482 INFO L85 PathProgramCache]: Analyzing trace with hash -464435932, now seen corresponding path program 11 times [2023-11-12 02:18:19,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:19,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635447697] [2023-11-12 02:18:19,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:19,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:19,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:19,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:19,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:19,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635447697] [2023-11-12 02:18:19,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635447697] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:19,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:19,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:18:19,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123113873] [2023-11-12 02:18:19,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:19,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:18:19,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:19,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:18:19,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:18:19,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 260 [2023-11-12 02:18:19,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 144 transitions, 1491 flow. Second operand has 5 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:19,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:19,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 260 [2023-11-12 02:18:19,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:20,314 INFO L124 PetriNetUnfolderBase]: 2912/5259 cut-off events. [2023-11-12 02:18:20,314 INFO L125 PetriNetUnfolderBase]: For 16890/18032 co-relation queries the response was YES. [2023-11-12 02:18:20,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20591 conditions, 5259 events. 2912/5259 cut-off events. For 16890/18032 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 35972 event pairs, 878 based on Foata normal form. 212/5311 useless extension candidates. Maximal degree in co-relation 8700. Up to 3661 conditions per place. [2023-11-12 02:18:20,365 INFO L140 encePairwiseOnDemand]: 251/260 looper letters, 89 selfloop transitions, 50 changer transitions 0/150 dead transitions. [2023-11-12 02:18:20,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 150 transitions, 1621 flow [2023-11-12 02:18:20,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:18:20,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:18:20,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 677 transitions. [2023-11-12 02:18:20,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5207692307692308 [2023-11-12 02:18:20,369 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 677 transitions. [2023-11-12 02:18:20,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 677 transitions. [2023-11-12 02:18:20,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:20,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 677 transitions. [2023-11-12 02:18:20,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 135.4) internal successors, (677), 5 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:20,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 260.0) internal successors, (1560), 6 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:20,377 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 260.0) internal successors, (1560), 6 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:20,377 INFO L175 Difference]: Start difference. First operand has 82 places, 144 transitions, 1491 flow. Second operand 5 states and 677 transitions. [2023-11-12 02:18:20,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 150 transitions, 1621 flow [2023-11-12 02:18:20,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 150 transitions, 1501 flow, removed 26 selfloop flow, removed 6 redundant places. [2023-11-12 02:18:20,444 INFO L231 Difference]: Finished difference. Result has 80 places, 126 transitions, 1260 flow [2023-11-12 02:18:20,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=1031, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1260, PETRI_PLACES=80, PETRI_TRANSITIONS=126} [2023-11-12 02:18:20,445 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 33 predicate places. [2023-11-12 02:18:20,445 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 126 transitions, 1260 flow [2023-11-12 02:18:20,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:20,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:20,446 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] [2023-11-12 02:18:20,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:18:20,446 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 2 more)] === [2023-11-12 02:18:20,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:20,447 INFO L85 PathProgramCache]: Analyzing trace with hash -558659166, now seen corresponding path program 12 times [2023-11-12 02:18:20,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:20,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76519595] [2023-11-12 02:18:20,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:20,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:20,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:20,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:20,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:20,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76519595] [2023-11-12 02:18:20,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76519595] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:20,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:20,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:18:20,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10715897] [2023-11-12 02:18:20,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:20,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:18:20,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:20,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:18:20,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:18:20,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 260 [2023-11-12 02:18:20,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 126 transitions, 1260 flow. Second operand has 8 states, 8 states have (on average 124.625) internal successors, (997), 8 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:20,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:20,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 260 [2023-11-12 02:18:20,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:21,490 INFO L124 PetriNetUnfolderBase]: 2938/5271 cut-off events. [2023-11-12 02:18:21,491 INFO L125 PetriNetUnfolderBase]: For 13565/14415 co-relation queries the response was YES. [2023-11-12 02:18:21,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19388 conditions, 5271 events. 2938/5271 cut-off events. For 13565/14415 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 36168 event pairs, 505 based on Foata normal form. 250/5331 useless extension candidates. Maximal degree in co-relation 7904. Up to 1704 conditions per place. [2023-11-12 02:18:21,547 INFO L140 encePairwiseOnDemand]: 250/260 looper letters, 96 selfloop transitions, 84 changer transitions 0/191 dead transitions. [2023-11-12 02:18:21,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 191 transitions, 1881 flow [2023-11-12 02:18:21,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:18:21,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-12 02:18:21,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1216 transitions. [2023-11-12 02:18:21,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5196581196581197 [2023-11-12 02:18:21,554 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1216 transitions. [2023-11-12 02:18:21,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1216 transitions. [2023-11-12 02:18:21,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:21,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1216 transitions. [2023-11-12 02:18:21,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 135.11111111111111) internal successors, (1216), 9 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:21,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 260.0) internal successors, (2600), 10 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:21,566 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 260.0) internal successors, (2600), 10 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:21,567 INFO L175 Difference]: Start difference. First operand has 80 places, 126 transitions, 1260 flow. Second operand 9 states and 1216 transitions. [2023-11-12 02:18:21,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 191 transitions, 1881 flow [2023-11-12 02:18:21,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 191 transitions, 1825 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-12 02:18:21,618 INFO L231 Difference]: Finished difference. Result has 88 places, 130 transitions, 1433 flow [2023-11-12 02:18:21,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=1204, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1433, PETRI_PLACES=88, PETRI_TRANSITIONS=130} [2023-11-12 02:18:21,619 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 41 predicate places. [2023-11-12 02:18:21,620 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 130 transitions, 1433 flow [2023-11-12 02:18:21,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 124.625) internal successors, (997), 8 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:21,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:21,621 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] [2023-11-12 02:18:21,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 02:18:21,621 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 2 more)] === [2023-11-12 02:18:21,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:21,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1904491236, now seen corresponding path program 13 times [2023-11-12 02:18:21,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:21,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546407940] [2023-11-12 02:18:21,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:21,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:21,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:21,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:21,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546407940] [2023-11-12 02:18:21,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546407940] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:21,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:21,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:18:21,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950839477] [2023-11-12 02:18:21,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:21,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:18:21,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:21,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:18:21,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:18:21,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 260 [2023-11-12 02:18:21,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 130 transitions, 1433 flow. Second operand has 7 states, 7 states have (on average 125.14285714285714) internal successors, (876), 7 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:21,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:21,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 260 [2023-11-12 02:18:21,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:22,677 INFO L124 PetriNetUnfolderBase]: 2981/5410 cut-off events. [2023-11-12 02:18:22,678 INFO L125 PetriNetUnfolderBase]: For 19135/19931 co-relation queries the response was YES. [2023-11-12 02:18:22,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21836 conditions, 5410 events. 2981/5410 cut-off events. For 19135/19931 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 37646 event pairs, 646 based on Foata normal form. 240/5474 useless extension candidates. Maximal degree in co-relation 9602. Up to 2654 conditions per place. [2023-11-12 02:18:22,732 INFO L140 encePairwiseOnDemand]: 250/260 looper letters, 98 selfloop transitions, 85 changer transitions 1/195 dead transitions. [2023-11-12 02:18:22,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 195 transitions, 2210 flow [2023-11-12 02:18:22,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:18:22,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-12 02:18:22,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1071 transitions. [2023-11-12 02:18:22,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5149038461538461 [2023-11-12 02:18:22,738 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1071 transitions. [2023-11-12 02:18:22,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1071 transitions. [2023-11-12 02:18:22,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:22,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1071 transitions. [2023-11-12 02:18:22,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 133.875) internal successors, (1071), 8 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:22,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 260.0) internal successors, (2340), 9 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:22,757 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 260.0) internal successors, (2340), 9 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:22,757 INFO L175 Difference]: Start difference. First operand has 88 places, 130 transitions, 1433 flow. Second operand 8 states and 1071 transitions. [2023-11-12 02:18:22,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 195 transitions, 2210 flow [2023-11-12 02:18:22,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 195 transitions, 2030 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-11-12 02:18:22,816 INFO L231 Difference]: Finished difference. Result has 91 places, 144 transitions, 1674 flow [2023-11-12 02:18:22,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=1277, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1674, PETRI_PLACES=91, PETRI_TRANSITIONS=144} [2023-11-12 02:18:22,818 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 44 predicate places. [2023-11-12 02:18:22,818 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 144 transitions, 1674 flow [2023-11-12 02:18:22,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 125.14285714285714) internal successors, (876), 7 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:22,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:22,827 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] [2023-11-12 02:18:22,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 02:18:22,829 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 2 more)] === [2023-11-12 02:18:22,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:22,830 INFO L85 PathProgramCache]: Analyzing trace with hash -475279810, now seen corresponding path program 14 times [2023-11-12 02:18:22,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:22,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160420019] [2023-11-12 02:18:22,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:22,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:22,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:22,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:22,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:22,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160420019] [2023-11-12 02:18:22,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160420019] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:22,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:23,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:18:23,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631054225] [2023-11-12 02:18:23,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:23,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:18:23,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:23,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:18:23,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:18:23,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 260 [2023-11-12 02:18:23,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 144 transitions, 1674 flow. Second operand has 7 states, 7 states have (on average 125.14285714285714) internal successors, (876), 7 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:23,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:23,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 260 [2023-11-12 02:18:23,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:23,814 INFO L124 PetriNetUnfolderBase]: 2977/5438 cut-off events. [2023-11-12 02:18:23,814 INFO L125 PetriNetUnfolderBase]: For 23274/24218 co-relation queries the response was YES. [2023-11-12 02:18:23,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22778 conditions, 5438 events. 2977/5438 cut-off events. For 23274/24218 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 38074 event pairs, 682 based on Foata normal form. 330/5598 useless extension candidates. Maximal degree in co-relation 10201. Up to 2654 conditions per place. [2023-11-12 02:18:23,864 INFO L140 encePairwiseOnDemand]: 250/260 looper letters, 98 selfloop transitions, 90 changer transitions 6/205 dead transitions. [2023-11-12 02:18:23,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 205 transitions, 2418 flow [2023-11-12 02:18:23,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:18:23,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-12 02:18:23,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1075 transitions. [2023-11-12 02:18:23,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5168269230769231 [2023-11-12 02:18:23,869 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1075 transitions. [2023-11-12 02:18:23,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1075 transitions. [2023-11-12 02:18:23,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:23,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1075 transitions. [2023-11-12 02:18:23,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 134.375) internal successors, (1075), 8 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:23,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 260.0) internal successors, (2340), 9 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:23,879 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 260.0) internal successors, (2340), 9 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:23,879 INFO L175 Difference]: Start difference. First operand has 91 places, 144 transitions, 1674 flow. Second operand 8 states and 1075 transitions. [2023-11-12 02:18:23,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 205 transitions, 2418 flow [2023-11-12 02:18:23,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 205 transitions, 2331 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-11-12 02:18:23,948 INFO L231 Difference]: Finished difference. Result has 95 places, 150 transitions, 1937 flow [2023-11-12 02:18:23,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=1602, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1937, PETRI_PLACES=95, PETRI_TRANSITIONS=150} [2023-11-12 02:18:23,949 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 48 predicate places. [2023-11-12 02:18:23,949 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 150 transitions, 1937 flow [2023-11-12 02:18:23,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 125.14285714285714) internal successors, (876), 7 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:23,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:23,950 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] [2023-11-12 02:18:23,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 02:18:23,950 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 2 more)] === [2023-11-12 02:18:23,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:23,951 INFO L85 PathProgramCache]: Analyzing trace with hash 687303010, now seen corresponding path program 15 times [2023-11-12 02:18:23,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:23,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390288924] [2023-11-12 02:18:23,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:23,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:23,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:24,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:24,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:24,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390288924] [2023-11-12 02:18:24,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390288924] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:24,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:24,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:18:24,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426766024] [2023-11-12 02:18:24,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:24,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:18:24,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:24,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:18:24,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:18:24,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 260 [2023-11-12 02:18:24,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 150 transitions, 1937 flow. Second operand has 7 states, 7 states have (on average 125.14285714285714) internal successors, (876), 7 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:24,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:24,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 260 [2023-11-12 02:18:24,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:25,081 INFO L124 PetriNetUnfolderBase]: 3022/5589 cut-off events. [2023-11-12 02:18:25,082 INFO L125 PetriNetUnfolderBase]: For 28692/29730 co-relation queries the response was YES. [2023-11-12 02:18:25,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24906 conditions, 5589 events. 3022/5589 cut-off events. For 28692/29730 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 40097 event pairs, 830 based on Foata normal form. 186/5605 useless extension candidates. Maximal degree in co-relation 11153. Up to 3761 conditions per place. [2023-11-12 02:18:25,140 INFO L140 encePairwiseOnDemand]: 250/260 looper letters, 132 selfloop transitions, 56 changer transitions 6/205 dead transitions. [2023-11-12 02:18:25,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 205 transitions, 2657 flow [2023-11-12 02:18:25,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:18:25,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-12 02:18:25,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1068 transitions. [2023-11-12 02:18:25,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5134615384615384 [2023-11-12 02:18:25,146 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1068 transitions. [2023-11-12 02:18:25,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1068 transitions. [2023-11-12 02:18:25,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:25,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1068 transitions. [2023-11-12 02:18:25,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 133.5) internal successors, (1068), 8 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:25,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 260.0) internal successors, (2340), 9 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:25,157 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 260.0) internal successors, (2340), 9 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:25,157 INFO L175 Difference]: Start difference. First operand has 95 places, 150 transitions, 1937 flow. Second operand 8 states and 1068 transitions. [2023-11-12 02:18:25,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 205 transitions, 2657 flow [2023-11-12 02:18:25,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 205 transitions, 2536 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-11-12 02:18:25,241 INFO L231 Difference]: Finished difference. Result has 97 places, 154 transitions, 2007 flow [2023-11-12 02:18:25,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=1826, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2007, PETRI_PLACES=97, PETRI_TRANSITIONS=154} [2023-11-12 02:18:25,242 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 50 predicate places. [2023-11-12 02:18:25,243 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 154 transitions, 2007 flow [2023-11-12 02:18:25,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 125.14285714285714) internal successors, (876), 7 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:25,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:25,243 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] [2023-11-12 02:18:25,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-12 02:18:25,244 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 2 more)] === [2023-11-12 02:18:25,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:25,245 INFO L85 PathProgramCache]: Analyzing trace with hash -229024938, now seen corresponding path program 16 times [2023-11-12 02:18:25,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:25,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197748126] [2023-11-12 02:18:25,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:25,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:25,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:25,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:25,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:25,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197748126] [2023-11-12 02:18:25,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197748126] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:25,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:25,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:18:25,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282015697] [2023-11-12 02:18:25,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:25,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:18:25,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:25,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:18:25,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:18:25,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 260 [2023-11-12 02:18:25,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 154 transitions, 2007 flow. Second operand has 8 states, 8 states have (on average 124.625) internal successors, (997), 8 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:25,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:25,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 260 [2023-11-12 02:18:25,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:26,423 INFO L124 PetriNetUnfolderBase]: 3033/5634 cut-off events. [2023-11-12 02:18:26,423 INFO L125 PetriNetUnfolderBase]: For 29923/30913 co-relation queries the response was YES. [2023-11-12 02:18:26,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24826 conditions, 5634 events. 3033/5634 cut-off events. For 29923/30913 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 40728 event pairs, 848 based on Foata normal form. 124/5600 useless extension candidates. Maximal degree in co-relation 10959. Up to 3838 conditions per place. [2023-11-12 02:18:26,464 INFO L140 encePairwiseOnDemand]: 250/260 looper letters, 130 selfloop transitions, 55 changer transitions 1/197 dead transitions. [2023-11-12 02:18:26,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 197 transitions, 2604 flow [2023-11-12 02:18:26,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:18:26,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-12 02:18:26,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1190 transitions. [2023-11-12 02:18:26,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085470085470085 [2023-11-12 02:18:26,470 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1190 transitions. [2023-11-12 02:18:26,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1190 transitions. [2023-11-12 02:18:26,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:26,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1190 transitions. [2023-11-12 02:18:26,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 132.22222222222223) internal successors, (1190), 9 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:26,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 260.0) internal successors, (2600), 10 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:26,481 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 260.0) internal successors, (2600), 10 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:26,481 INFO L175 Difference]: Start difference. First operand has 97 places, 154 transitions, 2007 flow. Second operand 9 states and 1190 transitions. [2023-11-12 02:18:26,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 197 transitions, 2604 flow [2023-11-12 02:18:26,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 197 transitions, 2456 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-12 02:18:26,577 INFO L231 Difference]: Finished difference. Result has 99 places, 156 transitions, 2007 flow [2023-11-12 02:18:26,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=1863, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2007, PETRI_PLACES=99, PETRI_TRANSITIONS=156} [2023-11-12 02:18:26,578 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 52 predicate places. [2023-11-12 02:18:26,578 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 156 transitions, 2007 flow [2023-11-12 02:18:26,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 124.625) internal successors, (997), 8 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:26,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:26,579 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] [2023-11-12 02:18:26,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-12 02:18:26,580 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 2 more)] === [2023-11-12 02:18:26,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:26,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1449565742, now seen corresponding path program 17 times [2023-11-12 02:18:26,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:26,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698149877] [2023-11-12 02:18:26,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:26,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:26,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:26,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:26,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:26,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698149877] [2023-11-12 02:18:26,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698149877] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:26,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:26,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:18:26,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969853106] [2023-11-12 02:18:26,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:26,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:18:26,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:26,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:18:26,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:18:26,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 260 [2023-11-12 02:18:26,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 156 transitions, 2007 flow. Second operand has 7 states, 7 states have (on average 125.14285714285714) internal successors, (876), 7 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:26,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:26,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 260 [2023-11-12 02:18:26,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:27,679 INFO L124 PetriNetUnfolderBase]: 2925/5502 cut-off events. [2023-11-12 02:18:27,679 INFO L125 PetriNetUnfolderBase]: For 29344/30380 co-relation queries the response was YES. [2023-11-12 02:18:27,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24443 conditions, 5502 events. 2925/5502 cut-off events. For 29344/30380 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 40090 event pairs, 850 based on Foata normal form. 158/5508 useless extension candidates. Maximal degree in co-relation 10903. Up to 3704 conditions per place. [2023-11-12 02:18:27,732 INFO L140 encePairwiseOnDemand]: 250/260 looper letters, 131 selfloop transitions, 55 changer transitions 8/205 dead transitions. [2023-11-12 02:18:27,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 205 transitions, 2730 flow [2023-11-12 02:18:27,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:18:27,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-12 02:18:27,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1062 transitions. [2023-11-12 02:18:27,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.510576923076923 [2023-11-12 02:18:27,736 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1062 transitions. [2023-11-12 02:18:27,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1062 transitions. [2023-11-12 02:18:27,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:27,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1062 transitions. [2023-11-12 02:18:27,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 132.75) internal successors, (1062), 8 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:27,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 260.0) internal successors, (2340), 9 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:27,746 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 260.0) internal successors, (2340), 9 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:27,746 INFO L175 Difference]: Start difference. First operand has 99 places, 156 transitions, 2007 flow. Second operand 8 states and 1062 transitions. [2023-11-12 02:18:27,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 205 transitions, 2730 flow [2023-11-12 02:18:27,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 205 transitions, 2609 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-12 02:18:27,844 INFO L231 Difference]: Finished difference. Result has 100 places, 159 transitions, 2065 flow [2023-11-12 02:18:27,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=1889, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2065, PETRI_PLACES=100, PETRI_TRANSITIONS=159} [2023-11-12 02:18:27,845 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 53 predicate places. [2023-11-12 02:18:27,845 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 159 transitions, 2065 flow [2023-11-12 02:18:27,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 125.14285714285714) internal successors, (876), 7 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:27,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:27,846 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] [2023-11-12 02:18:27,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-12 02:18:27,846 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 2 more)] === [2023-11-12 02:18:27,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:27,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1370614128, now seen corresponding path program 18 times [2023-11-12 02:18:27,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:27,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156905623] [2023-11-12 02:18:27,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:27,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:28,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:28,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:28,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156905623] [2023-11-12 02:18:28,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156905623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:28,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:28,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:18:28,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478585858] [2023-11-12 02:18:28,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:28,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:18:28,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:28,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:18:28,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:18:28,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 260 [2023-11-12 02:18:28,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 159 transitions, 2065 flow. Second operand has 7 states, 7 states have (on average 125.14285714285714) internal successors, (876), 7 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:28,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:28,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 260 [2023-11-12 02:18:28,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:29,067 INFO L124 PetriNetUnfolderBase]: 2683/5080 cut-off events. [2023-11-12 02:18:29,067 INFO L125 PetriNetUnfolderBase]: For 28050/28948 co-relation queries the response was YES. [2023-11-12 02:18:29,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22632 conditions, 5080 events. 2683/5080 cut-off events. For 28050/28948 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 36397 event pairs, 756 based on Foata normal form. 184/5124 useless extension candidates. Maximal degree in co-relation 9196. Up to 3402 conditions per place. [2023-11-12 02:18:29,121 INFO L140 encePairwiseOnDemand]: 251/260 looper letters, 140 selfloop transitions, 61 changer transitions 3/215 dead transitions. [2023-11-12 02:18:29,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 215 transitions, 2881 flow [2023-11-12 02:18:29,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:18:29,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-12 02:18:29,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1071 transitions. [2023-11-12 02:18:29,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5149038461538461 [2023-11-12 02:18:29,125 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1071 transitions. [2023-11-12 02:18:29,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1071 transitions. [2023-11-12 02:18:29,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:29,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1071 transitions. [2023-11-12 02:18:29,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 133.875) internal successors, (1071), 8 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:29,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 260.0) internal successors, (2340), 9 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:29,134 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 260.0) internal successors, (2340), 9 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:29,134 INFO L175 Difference]: Start difference. First operand has 100 places, 159 transitions, 2065 flow. Second operand 8 states and 1071 transitions. [2023-11-12 02:18:29,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 215 transitions, 2881 flow [2023-11-12 02:18:29,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 215 transitions, 2747 flow, removed 11 selfloop flow, removed 6 redundant places. [2023-11-12 02:18:29,239 INFO L231 Difference]: Finished difference. Result has 102 places, 168 transitions, 2274 flow [2023-11-12 02:18:29,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=1939, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2274, PETRI_PLACES=102, PETRI_TRANSITIONS=168} [2023-11-12 02:18:29,240 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 55 predicate places. [2023-11-12 02:18:29,240 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 168 transitions, 2274 flow [2023-11-12 02:18:29,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 125.14285714285714) internal successors, (876), 7 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:29,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:29,241 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] [2023-11-12 02:18:29,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-12 02:18:29,241 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 02:18:29,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:29,242 INFO L85 PathProgramCache]: Analyzing trace with hash 2127946224, now seen corresponding path program 19 times [2023-11-12 02:18:29,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:29,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266559702] [2023-11-12 02:18:29,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:29,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:29,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:29,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:29,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:29,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266559702] [2023-11-12 02:18:29,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266559702] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:29,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:29,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:18:29,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086418795] [2023-11-12 02:18:29,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:29,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:18:29,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:29,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:18:29,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:18:29,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 260 [2023-11-12 02:18:29,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 168 transitions, 2274 flow. Second operand has 9 states, 9 states have (on average 124.22222222222223) internal successors, (1118), 9 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:29,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:29,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 260 [2023-11-12 02:18:29,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:30,673 INFO L124 PetriNetUnfolderBase]: 2895/5530 cut-off events. [2023-11-12 02:18:30,673 INFO L125 PetriNetUnfolderBase]: For 28482/29544 co-relation queries the response was YES. [2023-11-12 02:18:30,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24289 conditions, 5530 events. 2895/5530 cut-off events. For 28482/29544 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 40799 event pairs, 598 based on Foata normal form. 256/5594 useless extension candidates. Maximal degree in co-relation 23266. Up to 1599 conditions per place. [2023-11-12 02:18:30,723 INFO L140 encePairwiseOnDemand]: 250/260 looper letters, 105 selfloop transitions, 145 changer transitions 2/263 dead transitions. [2023-11-12 02:18:30,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 263 transitions, 3290 flow [2023-11-12 02:18:30,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 02:18:30,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-12 02:18:30,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1481 transitions. [2023-11-12 02:18:30,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178321678321678 [2023-11-12 02:18:30,728 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1481 transitions. [2023-11-12 02:18:30,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1481 transitions. [2023-11-12 02:18:30,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:30,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1481 transitions. [2023-11-12 02:18:30,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 134.63636363636363) internal successors, (1481), 11 states have internal predecessors, (1481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:30,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 260.0) internal successors, (3120), 12 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:30,741 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 260.0) internal successors, (3120), 12 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:30,741 INFO L175 Difference]: Start difference. First operand has 102 places, 168 transitions, 2274 flow. Second operand 11 states and 1481 transitions. [2023-11-12 02:18:30,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 263 transitions, 3290 flow [2023-11-12 02:18:30,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 263 transitions, 3189 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-12 02:18:30,848 INFO L231 Difference]: Finished difference. Result has 109 places, 191 transitions, 2797 flow [2023-11-12 02:18:30,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=2177, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2797, PETRI_PLACES=109, PETRI_TRANSITIONS=191} [2023-11-12 02:18:30,849 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 62 predicate places. [2023-11-12 02:18:30,849 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 191 transitions, 2797 flow [2023-11-12 02:18:30,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 124.22222222222223) internal successors, (1118), 9 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:30,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:30,849 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] [2023-11-12 02:18:30,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-12 02:18:30,850 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 02:18:30,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:30,850 INFO L85 PathProgramCache]: Analyzing trace with hash 834225428, now seen corresponding path program 20 times [2023-11-12 02:18:30,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:30,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46895440] [2023-11-12 02:18:30,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:30,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:30,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:31,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:31,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:31,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46895440] [2023-11-12 02:18:31,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46895440] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:31,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:31,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:18:31,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752118501] [2023-11-12 02:18:31,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:31,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:18:31,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:31,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:18:31,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:18:31,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 260 [2023-11-12 02:18:31,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 191 transitions, 2797 flow. Second operand has 9 states, 9 states have (on average 124.22222222222223) internal successors, (1118), 9 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:31,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:31,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 260 [2023-11-12 02:18:31,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:32,210 INFO L124 PetriNetUnfolderBase]: 2890/5543 cut-off events. [2023-11-12 02:18:32,210 INFO L125 PetriNetUnfolderBase]: For 42492/43710 co-relation queries the response was YES. [2023-11-12 02:18:32,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27081 conditions, 5543 events. 2890/5543 cut-off events. For 42492/43710 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 41005 event pairs, 804 based on Foata normal form. 186/5549 useless extension candidates. Maximal degree in co-relation 25808. Up to 3463 conditions per place. [2023-11-12 02:18:32,255 INFO L140 encePairwiseOnDemand]: 250/260 looper letters, 143 selfloop transitions, 92 changer transitions 9/255 dead transitions. [2023-11-12 02:18:32,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 255 transitions, 3619 flow [2023-11-12 02:18:32,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-12 02:18:32,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-12 02:18:32,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1714 transitions. [2023-11-12 02:18:32,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5071005917159763 [2023-11-12 02:18:32,261 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1714 transitions. [2023-11-12 02:18:32,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1714 transitions. [2023-11-12 02:18:32,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:32,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1714 transitions. [2023-11-12 02:18:32,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 131.84615384615384) internal successors, (1714), 13 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:32,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 260.0) internal successors, (3640), 14 states have internal predecessors, (3640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:32,275 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 260.0) internal successors, (3640), 14 states have internal predecessors, (3640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:32,276 INFO L175 Difference]: Start difference. First operand has 109 places, 191 transitions, 2797 flow. Second operand 13 states and 1714 transitions. [2023-11-12 02:18:32,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 255 transitions, 3619 flow [2023-11-12 02:18:32,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 255 transitions, 3499 flow, removed 26 selfloop flow, removed 5 redundant places. [2023-11-12 02:18:32,474 INFO L231 Difference]: Finished difference. Result has 117 places, 189 transitions, 2815 flow [2023-11-12 02:18:32,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=2689, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2815, PETRI_PLACES=117, PETRI_TRANSITIONS=189} [2023-11-12 02:18:32,475 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 70 predicate places. [2023-11-12 02:18:32,475 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 189 transitions, 2815 flow [2023-11-12 02:18:32,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 124.22222222222223) internal successors, (1118), 9 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:32,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:32,476 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] [2023-11-12 02:18:32,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-12 02:18:32,477 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 02:18:32,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:32,478 INFO L85 PathProgramCache]: Analyzing trace with hash -300334482, now seen corresponding path program 21 times [2023-11-12 02:18:32,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:32,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460192705] [2023-11-12 02:18:32,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:32,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:32,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:32,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:32,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460192705] [2023-11-12 02:18:32,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460192705] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:32,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:32,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:18:32,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144175369] [2023-11-12 02:18:32,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:32,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:18:32,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:32,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:18:32,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:18:32,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 260 [2023-11-12 02:18:32,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 189 transitions, 2815 flow. Second operand has 9 states, 9 states have (on average 124.22222222222223) internal successors, (1118), 9 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:32,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:32,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 260 [2023-11-12 02:18:32,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:34,003 INFO L124 PetriNetUnfolderBase]: 2867/5492 cut-off events. [2023-11-12 02:18:34,003 INFO L125 PetriNetUnfolderBase]: For 42840/43990 co-relation queries the response was YES. [2023-11-12 02:18:34,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26748 conditions, 5492 events. 2867/5492 cut-off events. For 42840/43990 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 40497 event pairs, 822 based on Foata normal form. 110/5428 useless extension candidates. Maximal degree in co-relation 25560. Up to 3826 conditions per place. [2023-11-12 02:18:34,047 INFO L140 encePairwiseOnDemand]: 250/260 looper letters, 166 selfloop transitions, 60 changer transitions 10/247 dead transitions. [2023-11-12 02:18:34,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 247 transitions, 3584 flow [2023-11-12 02:18:34,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-12 02:18:34,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-12 02:18:34,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1578 transitions. [2023-11-12 02:18:34,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057692307692307 [2023-11-12 02:18:34,051 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1578 transitions. [2023-11-12 02:18:34,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1578 transitions. [2023-11-12 02:18:34,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:34,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1578 transitions. [2023-11-12 02:18:34,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 131.5) internal successors, (1578), 12 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:34,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 260.0) internal successors, (3380), 13 states have internal predecessors, (3380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:34,062 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 260.0) internal successors, (3380), 13 states have internal predecessors, (3380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:34,062 INFO L175 Difference]: Start difference. First operand has 117 places, 189 transitions, 2815 flow. Second operand 12 states and 1578 transitions. [2023-11-12 02:18:34,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 247 transitions, 3584 flow [2023-11-12 02:18:34,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 247 transitions, 3405 flow, removed 1 selfloop flow, removed 11 redundant places. [2023-11-12 02:18:34,229 INFO L231 Difference]: Finished difference. Result has 118 places, 187 transitions, 2695 flow [2023-11-12 02:18:34,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=2636, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2695, PETRI_PLACES=118, PETRI_TRANSITIONS=187} [2023-11-12 02:18:34,230 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 71 predicate places. [2023-11-12 02:18:34,230 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 187 transitions, 2695 flow [2023-11-12 02:18:34,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 124.22222222222223) internal successors, (1118), 9 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:34,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:34,230 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] [2023-11-12 02:18:34,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-12 02:18:34,231 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 02:18:34,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:34,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1390199090, now seen corresponding path program 22 times [2023-11-12 02:18:34,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:34,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22702949] [2023-11-12 02:18:34,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:34,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:34,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:34,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:34,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22702949] [2023-11-12 02:18:34,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22702949] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:34,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:34,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:18:34,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186067161] [2023-11-12 02:18:34,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:34,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:18:34,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:34,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:18:34,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:18:34,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 260 [2023-11-12 02:18:34,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 187 transitions, 2695 flow. Second operand has 8 states, 8 states have (on average 124.625) internal successors, (997), 8 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:34,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:34,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 260 [2023-11-12 02:18:34,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:35,698 INFO L124 PetriNetUnfolderBase]: 3136/6031 cut-off events. [2023-11-12 02:18:35,699 INFO L125 PetriNetUnfolderBase]: For 44684/45852 co-relation queries the response was YES. [2023-11-12 02:18:35,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28866 conditions, 6031 events. 3136/6031 cut-off events. For 44684/45852 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 45326 event pairs, 511 based on Foata normal form. 314/6195 useless extension candidates. Maximal degree in co-relation 27767. Up to 1827 conditions per place. [2023-11-12 02:18:35,762 INFO L140 encePairwiseOnDemand]: 250/260 looper letters, 103 selfloop transitions, 150 changer transitions 4/268 dead transitions. [2023-11-12 02:18:35,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 268 transitions, 3680 flow [2023-11-12 02:18:35,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:18:35,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-12 02:18:35,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1217 transitions. [2023-11-12 02:18:35,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5200854700854701 [2023-11-12 02:18:35,766 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1217 transitions. [2023-11-12 02:18:35,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1217 transitions. [2023-11-12 02:18:35,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:35,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1217 transitions. [2023-11-12 02:18:35,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 135.22222222222223) internal successors, (1217), 9 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:35,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 260.0) internal successors, (2600), 10 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:35,774 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 260.0) internal successors, (2600), 10 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:35,774 INFO L175 Difference]: Start difference. First operand has 118 places, 187 transitions, 2695 flow. Second operand 9 states and 1217 transitions. [2023-11-12 02:18:35,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 268 transitions, 3680 flow [2023-11-12 02:18:35,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 268 transitions, 3572 flow, removed 7 selfloop flow, removed 9 redundant places. [2023-11-12 02:18:35,944 INFO L231 Difference]: Finished difference. Result has 119 places, 205 transitions, 3189 flow [2023-11-12 02:18:35,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=2587, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3189, PETRI_PLACES=119, PETRI_TRANSITIONS=205} [2023-11-12 02:18:35,945 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 72 predicate places. [2023-11-12 02:18:35,945 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 205 transitions, 3189 flow [2023-11-12 02:18:35,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 124.625) internal successors, (997), 8 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:35,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:35,946 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] [2023-11-12 02:18:35,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-12 02:18:35,946 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 02:18:35,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:35,946 INFO L85 PathProgramCache]: Analyzing trace with hash 36016510, now seen corresponding path program 23 times [2023-11-12 02:18:35,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:35,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058564242] [2023-11-12 02:18:35,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:35,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:35,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:36,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:36,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:36,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058564242] [2023-11-12 02:18:36,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058564242] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:36,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:36,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:18:36,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945482635] [2023-11-12 02:18:36,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:36,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:18:36,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:36,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:18:36,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:18:36,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 260 [2023-11-12 02:18:36,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 205 transitions, 3189 flow. Second operand has 7 states, 7 states have (on average 125.14285714285714) internal successors, (876), 7 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:36,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:36,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 260 [2023-11-12 02:18:36,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:37,101 INFO L124 PetriNetUnfolderBase]: 2609/5082 cut-off events. [2023-11-12 02:18:37,101 INFO L125 PetriNetUnfolderBase]: For 46578/47928 co-relation queries the response was YES. [2023-11-12 02:18:37,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26399 conditions, 5082 events. 2609/5082 cut-off events. For 46578/47928 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 37061 event pairs, 596 based on Foata normal form. 338/5332 useless extension candidates. Maximal degree in co-relation 12802. Up to 2944 conditions per place. [2023-11-12 02:18:37,141 INFO L140 encePairwiseOnDemand]: 250/260 looper letters, 137 selfloop transitions, 108 changer transitions 2/258 dead transitions. [2023-11-12 02:18:37,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 258 transitions, 4070 flow [2023-11-12 02:18:37,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:18:37,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-12 02:18:37,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1075 transitions. [2023-11-12 02:18:37,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5168269230769231 [2023-11-12 02:18:37,145 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1075 transitions. [2023-11-12 02:18:37,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1075 transitions. [2023-11-12 02:18:37,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:37,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1075 transitions. [2023-11-12 02:18:37,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 134.375) internal successors, (1075), 8 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:37,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 260.0) internal successors, (2340), 9 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:37,151 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 260.0) internal successors, (2340), 9 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:37,151 INFO L175 Difference]: Start difference. First operand has 119 places, 205 transitions, 3189 flow. Second operand 8 states and 1075 transitions. [2023-11-12 02:18:37,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 258 transitions, 4070 flow [2023-11-12 02:18:37,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 258 transitions, 3873 flow, removed 25 selfloop flow, removed 7 redundant places. [2023-11-12 02:18:37,357 INFO L231 Difference]: Finished difference. Result has 121 places, 211 transitions, 3417 flow [2023-11-12 02:18:37,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=2904, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3417, PETRI_PLACES=121, PETRI_TRANSITIONS=211} [2023-11-12 02:18:37,358 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 74 predicate places. [2023-11-12 02:18:37,358 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 211 transitions, 3417 flow [2023-11-12 02:18:37,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 125.14285714285714) internal successors, (876), 7 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:37,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:37,358 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] [2023-11-12 02:18:37,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-12 02:18:37,358 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 02:18:37,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:37,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1530612342, now seen corresponding path program 24 times [2023-11-12 02:18:37,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:37,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203133536] [2023-11-12 02:18:37,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:37,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:37,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:37,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:37,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:37,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203133536] [2023-11-12 02:18:37,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203133536] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:37,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:37,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:18:37,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272842287] [2023-11-12 02:18:37,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:37,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:18:37,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:37,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:18:37,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:18:37,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 260 [2023-11-12 02:18:37,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 211 transitions, 3417 flow. Second operand has 9 states, 9 states have (on average 124.22222222222223) internal successors, (1118), 9 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:37,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:37,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 260 [2023-11-12 02:18:37,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:38,614 INFO L124 PetriNetUnfolderBase]: 2612/5101 cut-off events. [2023-11-12 02:18:38,614 INFO L125 PetriNetUnfolderBase]: For 50255/51541 co-relation queries the response was YES. [2023-11-12 02:18:38,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26867 conditions, 5101 events. 2612/5101 cut-off events. For 50255/51541 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 37350 event pairs, 488 based on Foata normal form. 292/5297 useless extension candidates. Maximal degree in co-relation 14162. Up to 2445 conditions per place. [2023-11-12 02:18:38,650 INFO L140 encePairwiseOnDemand]: 250/260 looper letters, 141 selfloop transitions, 130 changer transitions 6/288 dead transitions. [2023-11-12 02:18:38,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 288 transitions, 4410 flow [2023-11-12 02:18:38,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-12 02:18:38,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-12 02:18:38,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1602 transitions. [2023-11-12 02:18:38,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5134615384615384 [2023-11-12 02:18:38,653 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1602 transitions. [2023-11-12 02:18:38,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1602 transitions. [2023-11-12 02:18:38,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:38,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1602 transitions. [2023-11-12 02:18:38,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 133.5) internal successors, (1602), 12 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:38,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 260.0) internal successors, (3380), 13 states have internal predecessors, (3380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:38,661 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 260.0) internal successors, (3380), 13 states have internal predecessors, (3380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:38,661 INFO L175 Difference]: Start difference. First operand has 121 places, 211 transitions, 3417 flow. Second operand 12 states and 1602 transitions. [2023-11-12 02:18:38,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 288 transitions, 4410 flow [2023-11-12 02:18:38,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 288 transitions, 4287 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-12 02:18:38,844 INFO L231 Difference]: Finished difference. Result has 128 places, 212 transitions, 3577 flow [2023-11-12 02:18:38,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=3298, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3577, PETRI_PLACES=128, PETRI_TRANSITIONS=212} [2023-11-12 02:18:38,845 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 81 predicate places. [2023-11-12 02:18:38,845 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 212 transitions, 3577 flow [2023-11-12 02:18:38,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 124.22222222222223) internal successors, (1118), 9 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:38,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:38,846 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] [2023-11-12 02:18:38,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-12 02:18:38,847 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-12 02:18:38,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:38,847 INFO L85 PathProgramCache]: Analyzing trace with hash 585808928, now seen corresponding path program 25 times [2023-11-12 02:18:38,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:38,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805276180] [2023-11-12 02:18:38,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:38,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:38,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:39,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:39,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:39,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805276180] [2023-11-12 02:18:39,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805276180] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:39,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:39,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:18:39,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544544624] [2023-11-12 02:18:39,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:39,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:18:39,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:39,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:18:39,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:18:39,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 260 [2023-11-12 02:18:39,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 212 transitions, 3577 flow. Second operand has 8 states, 8 states have (on average 124.625) internal successors, (997), 8 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:39,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:39,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 260 [2023-11-12 02:18:39,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand