./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix044_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba29339-6c29-48cb-b820-4ff7d6ce1fea/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba29339-6c29-48cb-b820-4ff7d6ce1fea/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_cba29339-6c29-48cb-b820-4ff7d6ce1fea/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba29339-6c29-48cb-b820-4ff7d6ce1fea/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix044_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba29339-6c29-48cb-b820-4ff7d6ce1fea/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_cba29339-6c29-48cb-b820-4ff7d6ce1fea/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 2b2ed0379679fef7868072cf33e9753c7c5c6d498ba6cea443eeb2e2c1bbc6d1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:12:07,637 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:12:07,743 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba29339-6c29-48cb-b820-4ff7d6ce1fea/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:12:07,750 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:12:07,751 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:12:07,791 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:12:07,793 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:12:07,794 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:12:07,795 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:12:07,800 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:12:07,801 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:12:07,802 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:12:07,802 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:12:07,804 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:12:07,805 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:12:07,805 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:12:07,806 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:12:07,806 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:12:07,806 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:12:07,807 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:12:07,808 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:12:07,808 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:12:07,809 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:12:07,809 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:12:07,810 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:12:07,811 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:12:07,811 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:12:07,812 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:12:07,812 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:12:07,813 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:12:07,813 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:12:07,814 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:12:07,814 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:12:07,814 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:12:07,814 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:12:07,814 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:12:07,815 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:12:07,815 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:12:07,815 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:12:07,815 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_cba29339-6c29-48cb-b820-4ff7d6ce1fea/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba29339-6c29-48cb-b820-4ff7d6ce1fea/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b2ed0379679fef7868072cf33e9753c7c5c6d498ba6cea443eeb2e2c1bbc6d1 [2023-11-12 02:12:08,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:12:08,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:12:08,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:12:08,161 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:12:08,161 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:12:08,163 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba29339-6c29-48cb-b820-4ff7d6ce1fea/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-wmm/mix044_tso.oepc.i [2023-11-12 02:12:11,261 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:12:11,521 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:12:11,521 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba29339-6c29-48cb-b820-4ff7d6ce1fea/sv-benchmarks/c/pthread-wmm/mix044_tso.oepc.i [2023-11-12 02:12:11,541 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba29339-6c29-48cb-b820-4ff7d6ce1fea/bin/uautomizer-verify-uTZkv6EMXl/data/a22e74d7d/d777f37297cc4e34ad68baa551f5442c/FLAG156468cd1 [2023-11-12 02:12:11,556 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba29339-6c29-48cb-b820-4ff7d6ce1fea/bin/uautomizer-verify-uTZkv6EMXl/data/a22e74d7d/d777f37297cc4e34ad68baa551f5442c [2023-11-12 02:12:11,559 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:12:11,561 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:12:11,562 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:12:11,562 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:12:11,573 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:12:11,574 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:12:11" (1/1) ... [2023-11-12 02:12:11,575 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23b92391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:11, skipping insertion in model container [2023-11-12 02:12:11,575 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:12:11" (1/1) ... [2023-11-12 02:12:11,631 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:12:11,828 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_cba29339-6c29-48cb-b820-4ff7d6ce1fea/sv-benchmarks/c/pthread-wmm/mix044_tso.oepc.i[949,962] [2023-11-12 02:12:12,068 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:12:12,079 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:12:12,092 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_cba29339-6c29-48cb-b820-4ff7d6ce1fea/sv-benchmarks/c/pthread-wmm/mix044_tso.oepc.i[949,962] [2023-11-12 02:12:12,146 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:12:12,184 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:12:12,184 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:12:12,190 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:12:12,191 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:12 WrapperNode [2023-11-12 02:12:12,191 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:12:12,192 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:12:12,192 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:12:12,192 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:12:12,200 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:12" (1/1) ... [2023-11-12 02:12:12,228 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:12" (1/1) ... [2023-11-12 02:12:12,271 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 161 [2023-11-12 02:12:12,272 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:12:12,273 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:12:12,273 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:12:12,273 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:12:12,287 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:12" (1/1) ... [2023-11-12 02:12:12,287 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:12" (1/1) ... [2023-11-12 02:12:12,292 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:12" (1/1) ... [2023-11-12 02:12:12,293 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:12" (1/1) ... [2023-11-12 02:12:12,304 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:12" (1/1) ... [2023-11-12 02:12:12,306 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:12" (1/1) ... [2023-11-12 02:12:12,310 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:12" (1/1) ... [2023-11-12 02:12:12,312 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:12" (1/1) ... [2023-11-12 02:12:12,317 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:12:12,318 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:12:12,318 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:12:12,318 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:12:12,319 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:12" (1/1) ... [2023-11-12 02:12:12,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:12:12,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba29339-6c29-48cb-b820-4ff7d6ce1fea/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:12,367 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba29339-6c29-48cb-b820-4ff7d6ce1fea/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:12:12,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cba29339-6c29-48cb-b820-4ff7d6ce1fea/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:12:12,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:12:12,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:12:12,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:12:12,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:12:12,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:12:12,409 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-12 02:12:12,409 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-12 02:12:12,410 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-12 02:12:12,410 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-12 02:12:12,410 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-12 02:12:12,412 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-12 02:12:12,412 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-12 02:12:12,413 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-12 02:12:12,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:12:12,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:12:12,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:12:12,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:12:12,416 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 02:12:12,577 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:12:12,578 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:12:13,003 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:12:13,236 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:12:13,237 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:12:13,240 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:12:13 BoogieIcfgContainer [2023-11-12 02:12:13,241 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:12:13,245 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:12:13,245 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:12:13,248 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:12:13,248 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:12:11" (1/3) ... [2023-11-12 02:12:13,249 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@305b0811 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:12:13, skipping insertion in model container [2023-11-12 02:12:13,249 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:12" (2/3) ... [2023-11-12 02:12:13,251 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@305b0811 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:12:13, skipping insertion in model container [2023-11-12 02:12:13,252 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:12:13" (3/3) ... [2023-11-12 02:12:13,253 INFO L112 eAbstractionObserver]: Analyzing ICFG mix044_tso.oepc.i [2023-11-12 02:12:13,265 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:12:13,277 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:12:13,277 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-12 02:12:13,278 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:12:13,361 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:12:13,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 135 transitions, 286 flow [2023-11-12 02:12:13,519 INFO L124 PetriNetUnfolderBase]: 2/131 cut-off events. [2023-11-12 02:12:13,520 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:12:13,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 131 events. 2/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 75 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2023-11-12 02:12:13,531 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 135 transitions, 286 flow [2023-11-12 02:12:13,537 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 131 transitions, 274 flow [2023-11-12 02:12:13,541 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:12:13,552 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 142 places, 131 transitions, 274 flow [2023-11-12 02:12:13,555 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 142 places, 131 transitions, 274 flow [2023-11-12 02:12:13,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 131 transitions, 274 flow [2023-11-12 02:12:13,600 INFO L124 PetriNetUnfolderBase]: 2/131 cut-off events. [2023-11-12 02:12:13,600 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:12:13,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 131 events. 2/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 75 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2023-11-12 02:12:13,608 INFO L119 LiptonReduction]: Number of co-enabled transitions 3504 [2023-11-12 02:12:20,079 INFO L134 LiptonReduction]: Checked pairs total: 9480 [2023-11-12 02:12:20,079 INFO L136 LiptonReduction]: Total number of compositions: 115 [2023-11-12 02:12:20,113 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:12:20,123 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;@52de7615, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:12:20,123 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-12 02:12:20,130 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:12:20,131 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-11-12 02:12:20,131 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:12:20,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:20,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:12:20,133 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:12:20,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:20,138 INFO L85 PathProgramCache]: Analyzing trace with hash 546105896, now seen corresponding path program 1 times [2023-11-12 02:12:20,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:20,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692827073] [2023-11-12 02:12:20,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:20,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:20,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:20,763 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 02:12:20,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:20,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692827073] [2023-11-12 02:12:20,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692827073] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:20,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:20,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:12:20,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771974398] [2023-11-12 02:12:20,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:20,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:20,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:20,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:20,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:20,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 250 [2023-11-12 02:12:20,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 30 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states 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 02:12:20,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:20,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 250 [2023-11-12 02:12:20,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:22,426 INFO L124 PetriNetUnfolderBase]: 4903/7150 cut-off events. [2023-11-12 02:12:22,427 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2023-11-12 02:12:22,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13998 conditions, 7150 events. 4903/7150 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 41473 event pairs, 901 based on Foata normal form. 0/6809 useless extension candidates. Maximal degree in co-relation 13986. Up to 5323 conditions per place. [2023-11-12 02:12:22,494 INFO L140 encePairwiseOnDemand]: 247/250 looper letters, 39 selfloop transitions, 2 changer transitions 2/47 dead transitions. [2023-11-12 02:12:22,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 47 transitions, 198 flow [2023-11-12 02:12:22,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:22,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:12:22,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 401 transitions. [2023-11-12 02:12:22,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5346666666666666 [2023-11-12 02:12:22,518 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 401 transitions. [2023-11-12 02:12:22,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 401 transitions. [2023-11-12 02:12:22,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:22,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 401 transitions. [2023-11-12 02:12:22,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states 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 02:12:22,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states 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 02:12:22,547 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states 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 02:12:22,549 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 72 flow. Second operand 3 states and 401 transitions. [2023-11-12 02:12:22,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 47 transitions, 198 flow [2023-11-12 02:12:22,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 47 transitions, 192 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:12:22,559 INFO L231 Difference]: Finished difference. Result has 40 places, 28 transitions, 68 flow [2023-11-12 02:12:22,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=40, PETRI_TRANSITIONS=28} [2023-11-12 02:12:22,568 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2023-11-12 02:12:22,568 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 28 transitions, 68 flow [2023-11-12 02:12:22,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states 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 02:12:22,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:22,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:22,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:12:22,570 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:12:22,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:22,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1196810306, now seen corresponding path program 1 times [2023-11-12 02:12:22,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:22,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135116998] [2023-11-12 02:12:22,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:22,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:22,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:23,018 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 02:12:23,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:23,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135116998] [2023-11-12 02:12:23,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135116998] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:23,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:23,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:12:23,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923874989] [2023-11-12 02:12:23,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:23,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:23,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:23,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:23,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:23,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 250 [2023-11-12 02:12:23,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 28 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states 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 02:12:23,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:23,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 250 [2023-11-12 02:12:23,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:24,203 INFO L124 PetriNetUnfolderBase]: 4871/6885 cut-off events. [2023-11-12 02:12:24,204 INFO L125 PetriNetUnfolderBase]: For 437/437 co-relation queries the response was YES. [2023-11-12 02:12:24,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14171 conditions, 6885 events. 4871/6885 cut-off events. For 437/437 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 35371 event pairs, 1175 based on Foata normal form. 32/6913 useless extension candidates. Maximal degree in co-relation 14161. Up to 6097 conditions per place. [2023-11-12 02:12:24,262 INFO L140 encePairwiseOnDemand]: 246/250 looper letters, 35 selfloop transitions, 3 changer transitions 0/41 dead transitions. [2023-11-12 02:12:24,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 41 transitions, 174 flow [2023-11-12 02:12:24,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:24,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:12:24,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2023-11-12 02:12:24,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2023-11-12 02:12:24,265 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 390 transitions. [2023-11-12 02:12:24,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 390 transitions. [2023-11-12 02:12:24,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:24,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 390 transitions. [2023-11-12 02:12:24,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states 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 02:12:24,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states 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 02:12:24,270 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states 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 02:12:24,271 INFO L175 Difference]: Start difference. First operand has 40 places, 28 transitions, 68 flow. Second operand 3 states and 390 transitions. [2023-11-12 02:12:24,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 41 transitions, 174 flow [2023-11-12 02:12:24,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 41 transitions, 168 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:12:24,273 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 83 flow [2023-11-12 02:12:24,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2023-11-12 02:12:24,275 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2023-11-12 02:12:24,275 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 83 flow [2023-11-12 02:12:24,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states 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 02:12:24,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:24,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:24,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:12:24,276 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:12:24,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:24,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1553584012, now seen corresponding path program 1 times [2023-11-12 02:12:24,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:24,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465593987] [2023-11-12 02:12:24,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:24,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:24,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:24,957 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 02:12:24,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:24,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465593987] [2023-11-12 02:12:24,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465593987] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:24,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:24,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:12:24,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942652565] [2023-11-12 02:12:24,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:24,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:12:24,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:24,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:12:24,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:12:25,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 250 [2023-11-12 02:12:25,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 83 flow. Second operand has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states 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 02:12:25,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:25,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 250 [2023-11-12 02:12:25,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:26,811 INFO L124 PetriNetUnfolderBase]: 7805/10576 cut-off events. [2023-11-12 02:12:26,811 INFO L125 PetriNetUnfolderBase]: For 1024/1024 co-relation queries the response was YES. [2023-11-12 02:12:26,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22805 conditions, 10576 events. 7805/10576 cut-off events. For 1024/1024 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 49792 event pairs, 2289 based on Foata normal form. 240/10815 useless extension candidates. Maximal degree in co-relation 22794. Up to 6973 conditions per place. [2023-11-12 02:12:26,888 INFO L140 encePairwiseOnDemand]: 238/250 looper letters, 44 selfloop transitions, 11 changer transitions 0/56 dead transitions. [2023-11-12 02:12:26,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 56 transitions, 247 flow [2023-11-12 02:12:26,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:12:26,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:12:26,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 483 transitions. [2023-11-12 02:12:26,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.483 [2023-11-12 02:12:26,892 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 483 transitions. [2023-11-12 02:12:26,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 483 transitions. [2023-11-12 02:12:26,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:26,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 483 transitions. [2023-11-12 02:12:26,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 120.75) internal successors, (483), 4 states have internal predecessors, (483), 0 states have call successors, (0), 0 states 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 02:12:26,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states 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 02:12:26,899 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states 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 02:12:26,900 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 83 flow. Second operand 4 states and 483 transitions. [2023-11-12 02:12:26,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 56 transitions, 247 flow [2023-11-12 02:12:26,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 56 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:12:26,903 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 166 flow [2023-11-12 02:12:26,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2023-11-12 02:12:26,905 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2023-11-12 02:12:26,909 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 166 flow [2023-11-12 02:12:26,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states 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 02:12:26,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:26,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:26,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:12:26,911 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:12:26,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:26,911 INFO L85 PathProgramCache]: Analyzing trace with hash 844330437, now seen corresponding path program 1 times [2023-11-12 02:12:26,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:26,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843003059] [2023-11-12 02:12:26,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:26,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:27,529 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 02:12:27,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:27,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843003059] [2023-11-12 02:12:27,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843003059] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:27,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:27,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:12:27,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409713135] [2023-11-12 02:12:27,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:27,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:12:27,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:27,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:12:27,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:12:27,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 250 [2023-11-12 02:12:27,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 121.25) internal successors, (485), 4 states have internal predecessors, (485), 0 states have call successors, (0), 0 states 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 02:12:27,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:27,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 250 [2023-11-12 02:12:27,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:29,700 INFO L124 PetriNetUnfolderBase]: 8138/11290 cut-off events. [2023-11-12 02:12:29,701 INFO L125 PetriNetUnfolderBase]: For 7298/7427 co-relation queries the response was YES. [2023-11-12 02:12:29,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31547 conditions, 11290 events. 8138/11290 cut-off events. For 7298/7427 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 58872 event pairs, 3449 based on Foata normal form. 109/10985 useless extension candidates. Maximal degree in co-relation 31532. Up to 9942 conditions per place. [2023-11-12 02:12:29,794 INFO L140 encePairwiseOnDemand]: 244/250 looper letters, 45 selfloop transitions, 8 changer transitions 0/60 dead transitions. [2023-11-12 02:12:29,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 60 transitions, 352 flow [2023-11-12 02:12:29,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:29,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:12:29,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 396 transitions. [2023-11-12 02:12:29,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.528 [2023-11-12 02:12:29,798 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 396 transitions. [2023-11-12 02:12:29,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 396 transitions. [2023-11-12 02:12:29,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:29,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 396 transitions. [2023-11-12 02:12:29,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states 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 02:12:29,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states 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 02:12:29,804 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states 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 02:12:29,804 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 166 flow. Second operand 3 states and 396 transitions. [2023-11-12 02:12:29,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 60 transitions, 352 flow [2023-11-12 02:12:29,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 60 transitions, 349 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:12:29,814 INFO L231 Difference]: Finished difference. Result has 47 places, 46 transitions, 236 flow [2023-11-12 02:12:29,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=236, PETRI_PLACES=47, PETRI_TRANSITIONS=46} [2023-11-12 02:12:29,816 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2023-11-12 02:12:29,816 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 46 transitions, 236 flow [2023-11-12 02:12:29,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.25) internal successors, (485), 4 states have internal predecessors, (485), 0 states have call successors, (0), 0 states 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 02:12:29,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:29,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:29,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:12:29,818 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:12:29,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:29,818 INFO L85 PathProgramCache]: Analyzing trace with hash 403082533, now seen corresponding path program 1 times [2023-11-12 02:12:29,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:29,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768397425] [2023-11-12 02:12:29,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:29,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:29,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:30,640 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 02:12:30,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:30,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768397425] [2023-11-12 02:12:30,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768397425] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:30,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:30,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:12:30,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59171107] [2023-11-12 02:12:30,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:30,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:12:30,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:30,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:12:30,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:12:30,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 250 [2023-11-12 02:12:30,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 236 flow. Second operand has 5 states, 5 states have (on average 119.8) internal successors, (599), 5 states have internal predecessors, (599), 0 states have call successors, (0), 0 states 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 02:12:30,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:30,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 250 [2023-11-12 02:12:30,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:32,624 INFO L124 PetriNetUnfolderBase]: 8315/11482 cut-off events. [2023-11-12 02:12:32,624 INFO L125 PetriNetUnfolderBase]: For 11924/12295 co-relation queries the response was YES. [2023-11-12 02:12:32,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35743 conditions, 11482 events. 8315/11482 cut-off events. For 11924/12295 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 59801 event pairs, 3213 based on Foata normal form. 249/11269 useless extension candidates. Maximal degree in co-relation 35726. Up to 9795 conditions per place. [2023-11-12 02:12:32,718 INFO L140 encePairwiseOnDemand]: 242/250 looper letters, 68 selfloop transitions, 23 changer transitions 0/98 dead transitions. [2023-11-12 02:12:32,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 98 transitions, 635 flow [2023-11-12 02:12:32,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:12:32,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:12:32,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 655 transitions. [2023-11-12 02:12:32,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524 [2023-11-12 02:12:32,723 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 655 transitions. [2023-11-12 02:12:32,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 655 transitions. [2023-11-12 02:12:32,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:32,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 655 transitions. [2023-11-12 02:12:32,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 0 states have call successors, (0), 0 states 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 02:12:32,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 250.0) internal successors, (1500), 6 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states 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 02:12:32,731 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 250.0) internal successors, (1500), 6 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states 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 02:12:32,731 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 236 flow. Second operand 5 states and 655 transitions. [2023-11-12 02:12:32,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 98 transitions, 635 flow [2023-11-12 02:12:32,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 98 transitions, 627 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:12:32,743 INFO L231 Difference]: Finished difference. Result has 52 places, 61 transitions, 404 flow [2023-11-12 02:12:32,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=404, PETRI_PLACES=52, PETRI_TRANSITIONS=61} [2023-11-12 02:12:32,746 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2023-11-12 02:12:32,747 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 61 transitions, 404 flow [2023-11-12 02:12:32,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 119.8) internal successors, (599), 5 states have internal predecessors, (599), 0 states have call successors, (0), 0 states 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 02:12:32,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:32,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:32,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:12:32,748 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:12:32,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:32,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1562420828, now seen corresponding path program 1 times [2023-11-12 02:12:32,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:32,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316645913] [2023-11-12 02:12:32,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:32,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:32,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:33,219 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 02:12:33,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:33,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316645913] [2023-11-12 02:12:33,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316645913] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:33,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:33,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:12:33,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245469564] [2023-11-12 02:12:33,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:33,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:12:33,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:33,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:12:33,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:12:33,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 250 [2023-11-12 02:12:33,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 61 transitions, 404 flow. Second operand has 4 states, 4 states have (on average 121.75) internal successors, (487), 4 states have internal predecessors, (487), 0 states have call successors, (0), 0 states 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 02:12:33,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:33,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 250 [2023-11-12 02:12:33,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:35,358 INFO L124 PetriNetUnfolderBase]: 8423/11702 cut-off events. [2023-11-12 02:12:35,359 INFO L125 PetriNetUnfolderBase]: For 23223/23828 co-relation queries the response was YES. [2023-11-12 02:12:35,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41661 conditions, 11702 events. 8423/11702 cut-off events. For 23223/23828 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 61812 event pairs, 1965 based on Foata normal form. 222/11564 useless extension candidates. Maximal degree in co-relation 41641. Up to 8533 conditions per place. [2023-11-12 02:12:35,462 INFO L140 encePairwiseOnDemand]: 242/250 looper letters, 83 selfloop transitions, 17 changer transitions 0/107 dead transitions. [2023-11-12 02:12:35,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 107 transitions, 834 flow [2023-11-12 02:12:35,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:12:35,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:12:35,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 533 transitions. [2023-11-12 02:12:35,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.533 [2023-11-12 02:12:35,467 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 533 transitions. [2023-11-12 02:12:35,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 533 transitions. [2023-11-12 02:12:35,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:35,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 533 transitions. [2023-11-12 02:12:35,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 133.25) internal successors, (533), 4 states have internal predecessors, (533), 0 states have call successors, (0), 0 states 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 02:12:35,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states 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 02:12:35,473 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states 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 02:12:35,473 INFO L175 Difference]: Start difference. First operand has 52 places, 61 transitions, 404 flow. Second operand 4 states and 533 transitions. [2023-11-12 02:12:35,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 107 transitions, 834 flow [2023-11-12 02:12:35,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 107 transitions, 808 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-12 02:12:35,520 INFO L231 Difference]: Finished difference. Result has 56 places, 72 transitions, 539 flow [2023-11-12 02:12:35,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=539, PETRI_PLACES=56, PETRI_TRANSITIONS=72} [2023-11-12 02:12:35,524 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 13 predicate places. [2023-11-12 02:12:35,524 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 72 transitions, 539 flow [2023-11-12 02:12:35,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.75) internal successors, (487), 4 states have internal predecessors, (487), 0 states have call successors, (0), 0 states 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 02:12:35,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:35,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:35,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:12:35,525 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:12:35,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:35,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1559861468, now seen corresponding path program 2 times [2023-11-12 02:12:35,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:35,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4637850] [2023-11-12 02:12:35,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:35,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:35,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:36,126 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 02:12:36,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:36,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4637850] [2023-11-12 02:12:36,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4637850] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:36,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:36,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:12:36,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461998726] [2023-11-12 02:12:36,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:36,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:12:36,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:36,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:12:36,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:12:36,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 250 [2023-11-12 02:12:36,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 72 transitions, 539 flow. Second operand has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 0 states have call successors, (0), 0 states 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 02:12:36,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:36,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 250 [2023-11-12 02:12:36,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:37,640 INFO L124 PetriNetUnfolderBase]: 8111/11280 cut-off events. [2023-11-12 02:12:37,640 INFO L125 PetriNetUnfolderBase]: For 34255/34943 co-relation queries the response was YES. [2023-11-12 02:12:37,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44876 conditions, 11280 events. 8111/11280 cut-off events. For 34255/34943 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 59037 event pairs, 1963 based on Foata normal form. 468/11398 useless extension candidates. Maximal degree in co-relation 44853. Up to 8439 conditions per place. [2023-11-12 02:12:37,759 INFO L140 encePairwiseOnDemand]: 242/250 looper letters, 82 selfloop transitions, 17 changer transitions 0/106 dead transitions. [2023-11-12 02:12:37,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 106 transitions, 889 flow [2023-11-12 02:12:37,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:12:37,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:12:37,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 524 transitions. [2023-11-12 02:12:37,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524 [2023-11-12 02:12:37,765 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 524 transitions. [2023-11-12 02:12:37,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 524 transitions. [2023-11-12 02:12:37,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:37,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 524 transitions. [2023-11-12 02:12:37,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 02:12:37,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states 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 02:12:37,774 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states 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 02:12:37,775 INFO L175 Difference]: Start difference. First operand has 56 places, 72 transitions, 539 flow. Second operand 4 states and 524 transitions. [2023-11-12 02:12:37,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 106 transitions, 889 flow [2023-11-12 02:12:37,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 106 transitions, 856 flow, removed 13 selfloop flow, removed 1 redundant places. [2023-11-12 02:12:37,857 INFO L231 Difference]: Finished difference. Result has 59 places, 72 transitions, 557 flow [2023-11-12 02:12:37,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=557, PETRI_PLACES=59, PETRI_TRANSITIONS=72} [2023-11-12 02:12:37,858 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 16 predicate places. [2023-11-12 02:12:37,858 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 72 transitions, 557 flow [2023-11-12 02:12:37,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 0 states have call successors, (0), 0 states 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 02:12:37,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:37,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:37,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:12:37,859 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:12:37,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:37,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1190403184, now seen corresponding path program 1 times [2023-11-12 02:12:37,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:37,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400816073] [2023-11-12 02:12:37,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:37,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:37,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:38,639 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 02:12:38,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:38,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400816073] [2023-11-12 02:12:38,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400816073] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:38,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:38,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:12:38,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652214117] [2023-11-12 02:12:38,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:38,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:12:38,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:38,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:12:38,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:12:38,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 250 [2023-11-12 02:12:38,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 72 transitions, 557 flow. Second operand has 5 states, 5 states have (on average 119.2) internal successors, (596), 5 states have internal predecessors, (596), 0 states have call successors, (0), 0 states 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 02:12:38,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:38,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 250 [2023-11-12 02:12:38,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:40,407 INFO L124 PetriNetUnfolderBase]: 9808/13488 cut-off events. [2023-11-12 02:12:40,407 INFO L125 PetriNetUnfolderBase]: For 45212/46327 co-relation queries the response was YES. [2023-11-12 02:12:40,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54568 conditions, 13488 events. 9808/13488 cut-off events. For 45212/46327 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 70773 event pairs, 5254 based on Foata normal form. 704/13894 useless extension candidates. Maximal degree in co-relation 54543. Up to 10614 conditions per place. [2023-11-12 02:12:40,675 INFO L140 encePairwiseOnDemand]: 241/250 looper letters, 77 selfloop transitions, 42 changer transitions 0/126 dead transitions. [2023-11-12 02:12:40,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 126 transitions, 1131 flow [2023-11-12 02:12:40,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:12:40,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:12:40,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 641 transitions. [2023-11-12 02:12:40,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5128 [2023-11-12 02:12:40,681 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 641 transitions. [2023-11-12 02:12:40,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 641 transitions. [2023-11-12 02:12:40,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:40,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 641 transitions. [2023-11-12 02:12:40,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 128.2) internal successors, (641), 5 states have internal predecessors, (641), 0 states have call successors, (0), 0 states 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 02:12:40,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 250.0) internal successors, (1500), 6 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states 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 02:12:40,690 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 250.0) internal successors, (1500), 6 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states 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 02:12:40,691 INFO L175 Difference]: Start difference. First operand has 59 places, 72 transitions, 557 flow. Second operand 5 states and 641 transitions. [2023-11-12 02:12:40,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 126 transitions, 1131 flow [2023-11-12 02:12:40,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 126 transitions, 1097 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-12 02:12:40,728 INFO L231 Difference]: Finished difference. Result has 62 places, 99 transitions, 938 flow [2023-11-12 02:12:40,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=938, PETRI_PLACES=62, PETRI_TRANSITIONS=99} [2023-11-12 02:12:40,731 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2023-11-12 02:12:40,732 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 99 transitions, 938 flow [2023-11-12 02:12:40,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 119.2) internal successors, (596), 5 states have internal predecessors, (596), 0 states have call successors, (0), 0 states 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 02:12:40,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:40,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:40,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:12:40,733 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:12:40,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:40,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1111026754, now seen corresponding path program 2 times [2023-11-12 02:12:40,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:40,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333273309] [2023-11-12 02:12:40,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:40,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:41,407 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 02:12:41,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:41,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333273309] [2023-11-12 02:12:41,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333273309] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:41,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:41,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:12:41,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727220350] [2023-11-12 02:12:41,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:41,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:12:41,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:41,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:12:41,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:12:41,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 250 [2023-11-12 02:12:41,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 99 transitions, 938 flow. Second operand has 6 states, 6 states have (on average 118.66666666666667) internal successors, (712), 6 states have internal predecessors, (712), 0 states have call successors, (0), 0 states 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 02:12:41,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:41,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 250 [2023-11-12 02:12:41,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:43,560 INFO L124 PetriNetUnfolderBase]: 9826/13617 cut-off events. [2023-11-12 02:12:43,560 INFO L125 PetriNetUnfolderBase]: For 71971/74097 co-relation queries the response was YES. [2023-11-12 02:12:43,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63400 conditions, 13617 events. 9826/13617 cut-off events. For 71971/74097 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 72741 event pairs, 2167 based on Foata normal form. 760/13981 useless extension candidates. Maximal degree in co-relation 63373. Up to 10260 conditions per place. [2023-11-12 02:12:43,668 INFO L140 encePairwiseOnDemand]: 241/250 looper letters, 122 selfloop transitions, 41 changer transitions 0/170 dead transitions. [2023-11-12 02:12:43,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 170 transitions, 1769 flow [2023-11-12 02:12:43,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:12:43,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:12:43,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 655 transitions. [2023-11-12 02:12:43,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524 [2023-11-12 02:12:43,677 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 655 transitions. [2023-11-12 02:12:43,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 655 transitions. [2023-11-12 02:12:43,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:43,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 655 transitions. [2023-11-12 02:12:43,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 0 states have call successors, (0), 0 states 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 02:12:43,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 250.0) internal successors, (1500), 6 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states 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 02:12:43,690 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 250.0) internal successors, (1500), 6 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states 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 02:12:43,690 INFO L175 Difference]: Start difference. First operand has 62 places, 99 transitions, 938 flow. Second operand 5 states and 655 transitions. [2023-11-12 02:12:43,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 170 transitions, 1769 flow [2023-11-12 02:12:43,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 170 transitions, 1706 flow, removed 31 selfloop flow, removed 1 redundant places. [2023-11-12 02:12:43,903 INFO L231 Difference]: Finished difference. Result has 67 places, 125 transitions, 1351 flow [2023-11-12 02:12:43,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=899, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1351, PETRI_PLACES=67, PETRI_TRANSITIONS=125} [2023-11-12 02:12:43,905 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 24 predicate places. [2023-11-12 02:12:43,905 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 125 transitions, 1351 flow [2023-11-12 02:12:43,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 118.66666666666667) internal successors, (712), 6 states have internal predecessors, (712), 0 states have call successors, (0), 0 states 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 02:12:43,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:43,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:43,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:12:43,907 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:12:43,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:43,907 INFO L85 PathProgramCache]: Analyzing trace with hash 815147620, now seen corresponding path program 1 times [2023-11-12 02:12:43,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:43,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78556032] [2023-11-12 02:12:43,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:43,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:43,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:44,101 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 02:12:44,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:44,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78556032] [2023-11-12 02:12:44,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78556032] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:44,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:44,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:12:44,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111295787] [2023-11-12 02:12:44,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:44,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:12:44,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:44,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:12:44,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:12:44,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 250 [2023-11-12 02:12:44,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 125 transitions, 1351 flow. Second operand has 4 states, 4 states have (on average 116.75) internal successors, (467), 4 states have internal predecessors, (467), 0 states have call successors, (0), 0 states 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 02:12:44,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:44,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 250 [2023-11-12 02:12:44,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:45,843 INFO L124 PetriNetUnfolderBase]: 8173/11311 cut-off events. [2023-11-12 02:12:45,843 INFO L125 PetriNetUnfolderBase]: For 109276/111600 co-relation queries the response was YES. [2023-11-12 02:12:45,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59799 conditions, 11311 events. 8173/11311 cut-off events. For 109276/111600 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 61740 event pairs, 1180 based on Foata normal form. 2346/13140 useless extension candidates. Maximal degree in co-relation 59769. Up to 6513 conditions per place. [2023-11-12 02:12:45,916 INFO L140 encePairwiseOnDemand]: 243/250 looper letters, 225 selfloop transitions, 10 changer transitions 20/266 dead transitions. [2023-11-12 02:12:45,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 266 transitions, 3349 flow [2023-11-12 02:12:45,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:12:45,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:12:45,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 637 transitions. [2023-11-12 02:12:45,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5096 [2023-11-12 02:12:45,920 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 637 transitions. [2023-11-12 02:12:45,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 637 transitions. [2023-11-12 02:12:45,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:45,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 637 transitions. [2023-11-12 02:12:45,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 127.4) internal successors, (637), 5 states have internal predecessors, (637), 0 states have call successors, (0), 0 states 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 02:12:45,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 250.0) internal successors, (1500), 6 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states 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 02:12:45,926 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 250.0) internal successors, (1500), 6 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states 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 02:12:45,927 INFO L175 Difference]: Start difference. First operand has 67 places, 125 transitions, 1351 flow. Second operand 5 states and 637 transitions. [2023-11-12 02:12:45,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 266 transitions, 3349 flow [2023-11-12 02:12:46,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 266 transitions, 3195 flow, removed 51 selfloop flow, removed 1 redundant places. [2023-11-12 02:12:46,023 INFO L231 Difference]: Finished difference. Result has 73 places, 123 transitions, 1235 flow [2023-11-12 02:12:46,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=1132, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1235, PETRI_PLACES=73, PETRI_TRANSITIONS=123} [2023-11-12 02:12:46,024 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 30 predicate places. [2023-11-12 02:12:46,025 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 123 transitions, 1235 flow [2023-11-12 02:12:46,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.75) internal successors, (467), 4 states have internal predecessors, (467), 0 states have call successors, (0), 0 states 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 02:12:46,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:46,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:46,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:12:46,026 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:12:46,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:46,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1719248917, now seen corresponding path program 1 times [2023-11-12 02:12:46,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:46,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905253030] [2023-11-12 02:12:46,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:46,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:46,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:46,216 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 02:12:46,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:46,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905253030] [2023-11-12 02:12:46,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905253030] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:46,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:46,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:12:46,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342441610] [2023-11-12 02:12:46,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:46,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:12:46,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:46,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:12:46,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:12:46,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 250 [2023-11-12 02:12:46,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 123 transitions, 1235 flow. Second operand has 5 states, 5 states have (on average 116.2) internal successors, (581), 5 states have internal predecessors, (581), 0 states have call successors, (0), 0 states 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 02:12:46,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:46,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 250 [2023-11-12 02:12:46,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:48,012 INFO L124 PetriNetUnfolderBase]: 6437/9012 cut-off events. [2023-11-12 02:12:48,012 INFO L125 PetriNetUnfolderBase]: For 94818/97077 co-relation queries the response was YES. [2023-11-12 02:12:48,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49678 conditions, 9012 events. 6437/9012 cut-off events. For 94818/97077 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 49258 event pairs, 575 based on Foata normal form. 1847/10436 useless extension candidates. Maximal degree in co-relation 49644. Up to 4863 conditions per place. [2023-11-12 02:12:48,097 INFO L140 encePairwiseOnDemand]: 243/250 looper letters, 259 selfloop transitions, 19 changer transitions 23/312 dead transitions. [2023-11-12 02:12:48,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 312 transitions, 3804 flow [2023-11-12 02:12:48,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:12:48,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:12:48,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 894 transitions. [2023-11-12 02:12:48,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5108571428571429 [2023-11-12 02:12:48,103 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 894 transitions. [2023-11-12 02:12:48,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 894 transitions. [2023-11-12 02:12:48,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:48,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 894 transitions. [2023-11-12 02:12:48,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 127.71428571428571) internal successors, (894), 7 states have internal predecessors, (894), 0 states have call successors, (0), 0 states 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 02:12:48,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 250.0) internal successors, (2000), 8 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states 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 02:12:48,114 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 250.0) internal successors, (2000), 8 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states 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 02:12:48,115 INFO L175 Difference]: Start difference. First operand has 73 places, 123 transitions, 1235 flow. Second operand 7 states and 894 transitions. [2023-11-12 02:12:48,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 312 transitions, 3804 flow [2023-11-12 02:12:48,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 312 transitions, 3797 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-12 02:12:48,246 INFO L231 Difference]: Finished difference. Result has 81 places, 115 transitions, 1184 flow [2023-11-12 02:12:48,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1184, PETRI_PLACES=81, PETRI_TRANSITIONS=115} [2023-11-12 02:12:48,247 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 38 predicate places. [2023-11-12 02:12:48,247 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 115 transitions, 1184 flow [2023-11-12 02:12:48,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 116.2) internal successors, (581), 5 states have internal predecessors, (581), 0 states have call successors, (0), 0 states 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 02:12:48,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:48,248 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] [2023-11-12 02:12:48,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:12:48,249 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:12:48,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:48,249 INFO L85 PathProgramCache]: Analyzing trace with hash 982904106, now seen corresponding path program 1 times [2023-11-12 02:12:48,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:48,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129285752] [2023-11-12 02:12:48,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:48,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:48,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:48,547 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 02:12:48,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:48,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129285752] [2023-11-12 02:12:48,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129285752] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:48,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:48,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:12:48,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337360664] [2023-11-12 02:12:48,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:48,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:12:48,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:48,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:12:48,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:12:48,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 250 [2023-11-12 02:12:48,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 115 transitions, 1184 flow. Second operand has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states 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 02:12:48,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:48,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 250 [2023-11-12 02:12:48,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:50,348 INFO L124 PetriNetUnfolderBase]: 5969/8371 cut-off events. [2023-11-12 02:12:50,349 INFO L125 PetriNetUnfolderBase]: For 89221/91291 co-relation queries the response was YES. [2023-11-12 02:12:50,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48265 conditions, 8371 events. 5969/8371 cut-off events. For 89221/91291 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 45762 event pairs, 511 based on Foata normal form. 1335/9310 useless extension candidates. Maximal degree in co-relation 48227. Up to 4430 conditions per place. [2023-11-12 02:12:50,410 INFO L140 encePairwiseOnDemand]: 243/250 looper letters, 258 selfloop transitions, 27 changer transitions 40/336 dead transitions. [2023-11-12 02:12:50,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 336 transitions, 4154 flow [2023-11-12 02:12:50,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:12:50,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-12 02:12:50,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1149 transitions. [2023-11-12 02:12:50,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106666666666667 [2023-11-12 02:12:50,416 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1149 transitions. [2023-11-12 02:12:50,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1149 transitions. [2023-11-12 02:12:50,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:50,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1149 transitions. [2023-11-12 02:12:50,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 127.66666666666667) internal successors, (1149), 9 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states 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 02:12:50,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 250.0) internal successors, (2500), 10 states have internal predecessors, (2500), 0 states have call successors, (0), 0 states 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 02:12:50,428 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 250.0) internal successors, (2500), 10 states have internal predecessors, (2500), 0 states have call successors, (0), 0 states 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 02:12:50,428 INFO L175 Difference]: Start difference. First operand has 81 places, 115 transitions, 1184 flow. Second operand 9 states and 1149 transitions. [2023-11-12 02:12:50,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 336 transitions, 4154 flow [2023-11-12 02:12:50,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 336 transitions, 3814 flow, removed 62 selfloop flow, removed 7 redundant places. [2023-11-12 02:12:50,751 INFO L231 Difference]: Finished difference. Result has 85 places, 114 transitions, 1135 flow [2023-11-12 02:12:50,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=963, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1135, PETRI_PLACES=85, PETRI_TRANSITIONS=114} [2023-11-12 02:12:50,752 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 42 predicate places. [2023-11-12 02:12:50,752 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 114 transitions, 1135 flow [2023-11-12 02:12:50,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states 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 02:12:50,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:50,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:50,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 02:12:50,753 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:12:50,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:50,754 INFO L85 PathProgramCache]: Analyzing trace with hash 291679537, now seen corresponding path program 1 times [2023-11-12 02:12:50,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:50,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381016422] [2023-11-12 02:12:50,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:50,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:50,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:51,014 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 02:12:51,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:51,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381016422] [2023-11-12 02:12:51,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381016422] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:51,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:51,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:12:51,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567764778] [2023-11-12 02:12:51,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:51,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:12:51,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:51,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:12:51,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:12:51,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 250 [2023-11-12 02:12:51,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 114 transitions, 1135 flow. Second operand has 4 states, 4 states have (on average 121.5) internal successors, (486), 4 states have internal predecessors, (486), 0 states have call successors, (0), 0 states 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 02:12:51,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:51,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 250 [2023-11-12 02:12:51,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:52,785 INFO L124 PetriNetUnfolderBase]: 8148/11958 cut-off events. [2023-11-12 02:12:52,786 INFO L125 PetriNetUnfolderBase]: For 83683/84844 co-relation queries the response was YES. [2023-11-12 02:12:52,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66187 conditions, 11958 events. 8148/11958 cut-off events. For 83683/84844 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 73173 event pairs, 1274 based on Foata normal form. 747/12475 useless extension candidates. Maximal degree in co-relation 66148. Up to 6483 conditions per place. [2023-11-12 02:12:52,862 INFO L140 encePairwiseOnDemand]: 247/250 looper letters, 148 selfloop transitions, 2 changer transitions 99/258 dead transitions. [2023-11-12 02:12:52,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 258 transitions, 3089 flow [2023-11-12 02:12:52,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:12:52,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:12:52,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 522 transitions. [2023-11-12 02:12:52,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.522 [2023-11-12 02:12:52,865 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 522 transitions. [2023-11-12 02:12:52,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 522 transitions. [2023-11-12 02:12:52,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:52,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 522 transitions. [2023-11-12 02:12:52,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 130.5) internal successors, (522), 4 states have internal predecessors, (522), 0 states have call successors, (0), 0 states 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 02:12:52,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states 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 02:12:52,870 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states 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 02:12:52,871 INFO L175 Difference]: Start difference. First operand has 85 places, 114 transitions, 1135 flow. Second operand 4 states and 522 transitions. [2023-11-12 02:12:52,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 258 transitions, 3089 flow [2023-11-12 02:12:53,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 258 transitions, 2852 flow, removed 79 selfloop flow, removed 4 redundant places. [2023-11-12 02:12:53,518 INFO L231 Difference]: Finished difference. Result has 86 places, 111 transitions, 1035 flow [2023-11-12 02:12:53,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=1048, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1035, PETRI_PLACES=86, PETRI_TRANSITIONS=111} [2023-11-12 02:12:53,519 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 43 predicate places. [2023-11-12 02:12:53,519 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 111 transitions, 1035 flow [2023-11-12 02:12:53,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.5) internal successors, (486), 4 states have internal predecessors, (486), 0 states have call successors, (0), 0 states 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 02:12:53,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:53,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:53,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 02:12:53,520 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:12:53,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:53,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1942437931, now seen corresponding path program 2 times [2023-11-12 02:12:53,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:53,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916022911] [2023-11-12 02:12:53,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:53,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:53,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:53,806 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 02:12:53,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:53,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916022911] [2023-11-12 02:12:53,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916022911] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:53,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:53,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:12:53,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557067235] [2023-11-12 02:12:53,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:53,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:12:53,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:53,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:12:53,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:12:53,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 250 [2023-11-12 02:12:53,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 111 transitions, 1035 flow. Second operand has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states 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 02:12:53,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:53,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 250 [2023-11-12 02:12:53,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:55,563 INFO L124 PetriNetUnfolderBase]: 6599/9273 cut-off events. [2023-11-12 02:12:55,563 INFO L125 PetriNetUnfolderBase]: For 78627/80713 co-relation queries the response was YES. [2023-11-12 02:12:55,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50470 conditions, 9273 events. 6599/9273 cut-off events. For 78627/80713 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 52648 event pairs, 553 based on Foata normal form. 1233/10070 useless extension candidates. Maximal degree in co-relation 50429. Up to 5235 conditions per place. [2023-11-12 02:12:55,605 INFO L140 encePairwiseOnDemand]: 243/250 looper letters, 242 selfloop transitions, 28 changer transitions 49/330 dead transitions. [2023-11-12 02:12:55,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 330 transitions, 3767 flow [2023-11-12 02:12:55,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 02:12:55,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-12 02:12:55,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1371 transitions. [2023-11-12 02:12:55,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49854545454545457 [2023-11-12 02:12:55,610 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1371 transitions. [2023-11-12 02:12:55,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1371 transitions. [2023-11-12 02:12:55,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:55,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1371 transitions. [2023-11-12 02:12:55,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 124.63636363636364) internal successors, (1371), 11 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states 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 02:12:55,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 250.0) internal successors, (3000), 12 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states 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 02:12:55,621 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 250.0) internal successors, (3000), 12 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states 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 02:12:55,621 INFO L175 Difference]: Start difference. First operand has 86 places, 111 transitions, 1035 flow. Second operand 11 states and 1371 transitions. [2023-11-12 02:12:55,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 330 transitions, 3767 flow [2023-11-12 02:12:55,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 330 transitions, 3683 flow, removed 11 selfloop flow, removed 4 redundant places. [2023-11-12 02:12:55,868 INFO L231 Difference]: Finished difference. Result has 94 places, 108 transitions, 1010 flow [2023-11-12 02:12:55,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=935, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1010, PETRI_PLACES=94, PETRI_TRANSITIONS=108} [2023-11-12 02:12:55,869 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 51 predicate places. [2023-11-12 02:12:55,869 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 108 transitions, 1010 flow [2023-11-12 02:12:55,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states 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 02:12:55,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:55,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:55,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 02:12:55,870 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-12 02:12:55,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:55,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1937578344, now seen corresponding path program 1 times [2023-11-12 02:12:55,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:55,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765278781] [2023-11-12 02:12:55,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:55,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:56,374 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 02:12:56,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:56,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765278781] [2023-11-12 02:12:56,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765278781] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:56,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:56,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:12:56,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430097375] [2023-11-12 02:12:56,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:56,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:12:56,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:56,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:12:56,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:12:56,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 250 [2023-11-12 02:12:56,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 108 transitions, 1010 flow. Second operand has 5 states, 5 states have (on average 110.4) internal successors, (552), 5 states have internal predecessors, (552), 0 states have call successors, (0), 0 states 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 02:12:56,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:56,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 250 [2023-11-12 02:12:56,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand