./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix017.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_bc28e8f2-1cc9-4a55-99d5-d947456b296f/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc28e8f2-1cc9-4a55-99d5-d947456b296f/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc28e8f2-1cc9-4a55-99d5-d947456b296f/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc28e8f2-1cc9-4a55-99d5-d947456b296f/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix017.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc28e8f2-1cc9-4a55-99d5-d947456b296f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc28e8f2-1cc9-4a55-99d5-d947456b296f/bin/uautomizer-verify-uCwYo4JHxu --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 a97b4f259d777d70ea3df756a2f94b2605f52fea9df0872361c6911477a44448 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:37:53,636 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:37:53,745 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc28e8f2-1cc9-4a55-99d5-d947456b296f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:37:53,749 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:37:53,750 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:37:53,796 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:37:53,797 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:37:53,798 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:37:53,800 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:37:53,804 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:37:53,805 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:37:53,806 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:37:53,806 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:37:53,808 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:37:53,809 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:37:53,809 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:37:53,810 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:37:53,810 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:37:53,811 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:37:53,811 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:37:53,811 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:37:53,812 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:37:53,813 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:37:53,813 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:37:53,813 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:37:53,814 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:37:53,815 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:37:53,815 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:37:53,816 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:37:53,816 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:37:53,818 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:37:53,818 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:37:53,818 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:37:53,819 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:37:53,819 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:37:53,819 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:37:53,820 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:37:53,820 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:37:53,820 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:37:53,820 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_bc28e8f2-1cc9-4a55-99d5-d947456b296f/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc28e8f2-1cc9-4a55-99d5-d947456b296f/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a97b4f259d777d70ea3df756a2f94b2605f52fea9df0872361c6911477a44448 [2023-11-19 07:37:54,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:37:54,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:37:54,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:37:54,202 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:37:54,202 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:37:54,204 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc28e8f2-1cc9-4a55-99d5-d947456b296f/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/mix017.oepc.i [2023-11-19 07:37:57,495 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:37:57,874 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:37:57,875 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc28e8f2-1cc9-4a55-99d5-d947456b296f/sv-benchmarks/c/pthread-wmm/mix017.oepc.i [2023-11-19 07:37:57,900 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc28e8f2-1cc9-4a55-99d5-d947456b296f/bin/uautomizer-verify-uCwYo4JHxu/data/5ae813e15/99b43665e13d49e28590e6c32c6c940e/FLAGe9fb51ed2 [2023-11-19 07:37:57,916 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc28e8f2-1cc9-4a55-99d5-d947456b296f/bin/uautomizer-verify-uCwYo4JHxu/data/5ae813e15/99b43665e13d49e28590e6c32c6c940e [2023-11-19 07:37:57,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:37:57,925 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:37:57,930 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:37:57,931 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:37:57,936 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:37:57,937 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:37:57" (1/1) ... [2023-11-19 07:37:57,938 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70e88a2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:57, skipping insertion in model container [2023-11-19 07:37:57,938 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:37:57" (1/1) ... [2023-11-19 07:37:58,011 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:37:58,247 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_bc28e8f2-1cc9-4a55-99d5-d947456b296f/sv-benchmarks/c/pthread-wmm/mix017.oepc.i[945,958] [2023-11-19 07:37:58,476 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:37:58,487 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:37:58,500 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_bc28e8f2-1cc9-4a55-99d5-d947456b296f/sv-benchmarks/c/pthread-wmm/mix017.oepc.i[945,958] [2023-11-19 07:37:58,552 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:37:58,589 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:37:58,589 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:37:58,597 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:37:58,597 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:58 WrapperNode [2023-11-19 07:37:58,598 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:37:58,599 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:37:58,599 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:37:58,599 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:37:58,607 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:58" (1/1) ... [2023-11-19 07:37:58,626 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:58" (1/1) ... [2023-11-19 07:37:58,655 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 145 [2023-11-19 07:37:58,655 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:37:58,656 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:37:58,656 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:37:58,657 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:37:58,666 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:58" (1/1) ... [2023-11-19 07:37:58,667 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:58" (1/1) ... [2023-11-19 07:37:58,671 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:58" (1/1) ... [2023-11-19 07:37:58,671 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:58" (1/1) ... [2023-11-19 07:37:58,685 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:58" (1/1) ... [2023-11-19 07:37:58,690 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:58" (1/1) ... [2023-11-19 07:37:58,694 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:58" (1/1) ... [2023-11-19 07:37:58,697 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:58" (1/1) ... [2023-11-19 07:37:58,701 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:37:58,702 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:37:58,702 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:37:58,702 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:37:58,703 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:58" (1/1) ... [2023-11-19 07:37:58,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:37:58,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc28e8f2-1cc9-4a55-99d5-d947456b296f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:58,757 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc28e8f2-1cc9-4a55-99d5-d947456b296f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:58,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc28e8f2-1cc9-4a55-99d5-d947456b296f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:37:58,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:37:58,813 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:37:58,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:37:58,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:37:58,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:37:58,814 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 07:37:58,814 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 07:37:58,815 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 07:37:58,815 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 07:37:58,815 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 07:37:58,817 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 07:37:58,817 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-19 07:37:58,818 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-19 07:37:58,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:37:58,819 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:37:58,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:37:58,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:37:58,821 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:37:59,040 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:37:59,046 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:37:59,450 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:37:59,669 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:37:59,670 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:37:59,674 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:37:59 BoogieIcfgContainer [2023-11-19 07:37:59,675 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:37:59,681 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:37:59,681 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:37:59,685 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:37:59,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:37:57" (1/3) ... [2023-11-19 07:37:59,686 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55530374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:37:59, skipping insertion in model container [2023-11-19 07:37:59,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:58" (2/3) ... [2023-11-19 07:37:59,687 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55530374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:37:59, skipping insertion in model container [2023-11-19 07:37:59,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:37:59" (3/3) ... [2023-11-19 07:37:59,688 INFO L112 eAbstractionObserver]: Analyzing ICFG mix017.oepc.i [2023-11-19 07:37:59,700 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:37:59,712 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:37:59,712 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 07:37:59,713 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:37:59,829 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:37:59,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 136 transitions, 288 flow [2023-11-19 07:37:59,940 INFO L124 PetriNetUnfolderBase]: 3/132 cut-off events. [2023-11-19 07:37:59,940 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:37:59,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 132 events. 3/132 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 72 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2023-11-19 07:37:59,947 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 136 transitions, 288 flow [2023-11-19 07:37:59,952 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 132 transitions, 276 flow [2023-11-19 07:37:59,956 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:37:59,967 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 142 places, 132 transitions, 276 flow [2023-11-19 07:37:59,970 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 142 places, 132 transitions, 276 flow [2023-11-19 07:37:59,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 132 transitions, 276 flow [2023-11-19 07:38:00,028 INFO L124 PetriNetUnfolderBase]: 3/132 cut-off events. [2023-11-19 07:38:00,029 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:38:00,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 132 events. 3/132 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 72 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2023-11-19 07:38:00,036 INFO L119 LiptonReduction]: Number of co-enabled transitions 3560 [2023-11-19 07:38:05,358 INFO L134 LiptonReduction]: Checked pairs total: 9432 [2023-11-19 07:38:05,358 INFO L136 LiptonReduction]: Total number of compositions: 116 [2023-11-19 07:38:05,374 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:38:05,381 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;@71617d7d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:38:05,382 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-19 07:38:05,386 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:38:05,386 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-19 07:38:05,386 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:38:05,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:05,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:38:05,388 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:38:05,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:05,393 INFO L85 PathProgramCache]: Analyzing trace with hash 569165, now seen corresponding path program 1 times [2023-11-19 07:38:05,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:05,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5139814] [2023-11-19 07:38:05,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:05,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:05,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:05,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:05,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5139814] [2023-11-19 07:38:05,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5139814] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:05,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:05,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:38:05,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449997994] [2023-11-19 07:38:05,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:05,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:38:05,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:05,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:38:05,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:38:05,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 252 [2023-11-19 07:38:05,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 31 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:05,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:05,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 252 [2023-11-19 07:38:05,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:07,403 INFO L124 PetriNetUnfolderBase]: 4903/6793 cut-off events. [2023-11-19 07:38:07,404 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-11-19 07:38:07,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13641 conditions, 6793 events. 4903/6793 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 34192 event pairs, 1935 based on Foata normal form. 0/6455 useless extension candidates. Maximal degree in co-relation 13629. Up to 5335 conditions per place. [2023-11-19 07:38:07,467 INFO L140 encePairwiseOnDemand]: 248/252 looper letters, 41 selfloop transitions, 2 changer transitions 2/49 dead transitions. [2023-11-19 07:38:07,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 49 transitions, 209 flow [2023-11-19 07:38:07,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:38:07,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:38:07,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 405 transitions. [2023-11-19 07:38:07,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2023-11-19 07:38:07,491 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 405 transitions. [2023-11-19 07:38:07,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 405 transitions. [2023-11-19 07:38:07,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:07,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 405 transitions. [2023-11-19 07:38:07,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:07,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:07,512 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:07,514 INFO L175 Difference]: Start difference. First operand has 43 places, 31 transitions, 74 flow. Second operand 3 states and 405 transitions. [2023-11-19 07:38:07,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 49 transitions, 209 flow [2023-11-19 07:38:07,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 49 transitions, 202 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:38:07,534 INFO L231 Difference]: Finished difference. Result has 40 places, 28 transitions, 68 flow [2023-11-19 07:38:07,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, 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} [2023-11-19 07:38:07,540 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2023-11-19 07:38:07,540 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 28 transitions, 68 flow [2023-11-19 07:38:07,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:07,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:07,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:07,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:38:07,542 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:38:07,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:07,544 INFO L85 PathProgramCache]: Analyzing trace with hash -2053856367, now seen corresponding path program 1 times [2023-11-19 07:38:07,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:07,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852666960] [2023-11-19 07:38:07,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:07,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:07,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:08,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:08,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:08,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852666960] [2023-11-19 07:38:08,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852666960] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:08,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:08,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:38:08,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062197228] [2023-11-19 07:38:08,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:08,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:38:08,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:08,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:38:08,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:38:08,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 252 [2023-11-19 07:38:08,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 28 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:08,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:08,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 252 [2023-11-19 07:38:08,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:10,259 INFO L124 PetriNetUnfolderBase]: 9575/12870 cut-off events. [2023-11-19 07:38:10,260 INFO L125 PetriNetUnfolderBase]: For 653/653 co-relation queries the response was YES. [2023-11-19 07:38:10,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26710 conditions, 12870 events. 9575/12870 cut-off events. For 653/653 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 58980 event pairs, 4615 based on Foata normal form. 16/12886 useless extension candidates. Maximal degree in co-relation 26700. Up to 12679 conditions per place. [2023-11-19 07:38:10,386 INFO L140 encePairwiseOnDemand]: 246/252 looper letters, 39 selfloop transitions, 5 changer transitions 0/44 dead transitions. [2023-11-19 07:38:10,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 44 transitions, 196 flow [2023-11-19 07:38:10,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:38:10,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:38:10,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 378 transitions. [2023-11-19 07:38:10,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-11-19 07:38:10,391 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 378 transitions. [2023-11-19 07:38:10,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 378 transitions. [2023-11-19 07:38:10,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:10,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 378 transitions. [2023-11-19 07:38:10,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:10,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:10,401 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:10,402 INFO L175 Difference]: Start difference. First operand has 40 places, 28 transitions, 68 flow. Second operand 3 states and 378 transitions. [2023-11-19 07:38:10,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 44 transitions, 196 flow [2023-11-19 07:38:10,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 44 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:38:10,407 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 97 flow [2023-11-19 07:38:10,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, 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=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2023-11-19 07:38:10,413 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2023-11-19 07:38:10,413 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 97 flow [2023-11-19 07:38:10,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:10,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:10,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:10,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:38:10,415 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:38:10,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:10,418 INFO L85 PathProgramCache]: Analyzing trace with hash 587266879, now seen corresponding path program 1 times [2023-11-19 07:38:10,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:10,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030862796] [2023-11-19 07:38:10,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:10,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:10,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:10,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:10,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030862796] [2023-11-19 07:38:10,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030862796] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:10,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:10,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:38:10,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298279119] [2023-11-19 07:38:10,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:10,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:38:10,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:10,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:38:10,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:38:10,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 252 [2023-11-19 07:38:10,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:10,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:10,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 252 [2023-11-19 07:38:10,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:12,233 INFO L124 PetriNetUnfolderBase]: 6558/9141 cut-off events. [2023-11-19 07:38:12,234 INFO L125 PetriNetUnfolderBase]: For 752/755 co-relation queries the response was YES. [2023-11-19 07:38:12,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19433 conditions, 9141 events. 6558/9141 cut-off events. For 752/755 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 46081 event pairs, 2212 based on Foata normal form. 170/9022 useless extension candidates. Maximal degree in co-relation 19422. Up to 6328 conditions per place. [2023-11-19 07:38:12,319 INFO L140 encePairwiseOnDemand]: 249/252 looper letters, 34 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2023-11-19 07:38:12,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 43 transitions, 193 flow [2023-11-19 07:38:12,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:38:12,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:38:12,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 391 transitions. [2023-11-19 07:38:12,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5171957671957672 [2023-11-19 07:38:12,322 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 391 transitions. [2023-11-19 07:38:12,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 391 transitions. [2023-11-19 07:38:12,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:12,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 391 transitions. [2023-11-19 07:38:12,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:12,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:12,328 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:12,328 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 97 flow. Second operand 3 states and 391 transitions. [2023-11-19 07:38:12,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 43 transitions, 193 flow [2023-11-19 07:38:12,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 43 transitions, 188 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:38:12,331 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 103 flow [2023-11-19 07:38:12,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2023-11-19 07:38:12,333 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -1 predicate places. [2023-11-19 07:38:12,337 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 103 flow [2023-11-19 07:38:12,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:12,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:12,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:12,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:38:12,339 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:38:12,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:12,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1854078516, now seen corresponding path program 1 times [2023-11-19 07:38:12,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:12,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184582380] [2023-11-19 07:38:12,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:12,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:12,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:12,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:12,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:12,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184582380] [2023-11-19 07:38:12,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184582380] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:12,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:12,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:38:12,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855041583] [2023-11-19 07:38:12,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:12,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:38:12,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:12,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:38:12,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:38:12,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 252 [2023-11-19 07:38:12,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 103 flow. Second operand has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:12,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:12,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 252 [2023-11-19 07:38:12,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:13,930 INFO L124 PetriNetUnfolderBase]: 4957/7339 cut-off events. [2023-11-19 07:38:13,930 INFO L125 PetriNetUnfolderBase]: For 596/637 co-relation queries the response was YES. [2023-11-19 07:38:13,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15699 conditions, 7339 events. 4957/7339 cut-off events. For 596/637 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 42050 event pairs, 1007 based on Foata normal form. 541/7685 useless extension candidates. Maximal degree in co-relation 15686. Up to 4619 conditions per place. [2023-11-19 07:38:14,003 INFO L140 encePairwiseOnDemand]: 245/252 looper letters, 60 selfloop transitions, 10 changer transitions 0/78 dead transitions. [2023-11-19 07:38:14,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 78 transitions, 341 flow [2023-11-19 07:38:14,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:38:14,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:38:14,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 637 transitions. [2023-11-19 07:38:14,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5055555555555555 [2023-11-19 07:38:14,008 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 637 transitions. [2023-11-19 07:38:14,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 637 transitions. [2023-11-19 07:38:14,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:14,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 637 transitions. [2023-11-19 07:38:14,011 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) [2023-11-19 07:38:14,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 252.0) internal successors, (1512), 6 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:14,017 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 252.0) internal successors, (1512), 6 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:14,017 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 103 flow. Second operand 5 states and 637 transitions. [2023-11-19 07:38:14,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 78 transitions, 341 flow [2023-11-19 07:38:14,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 78 transitions, 335 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:38:14,023 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 172 flow [2023-11-19 07:38:14,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2023-11-19 07:38:14,024 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2023-11-19 07:38:14,025 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 172 flow [2023-11-19 07:38:14,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:14,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:14,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:14,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:38:14,026 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:38:14,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:14,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1330895523, now seen corresponding path program 1 times [2023-11-19 07:38:14,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:14,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366006482] [2023-11-19 07:38:14,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:14,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:14,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:14,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:14,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:14,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366006482] [2023-11-19 07:38:14,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366006482] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:14,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:14,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:38:14,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166062611] [2023-11-19 07:38:14,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:14,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:38:14,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:14,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:38:14,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:38:14,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 252 [2023-11-19 07:38:14,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 172 flow. Second operand has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:14,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:14,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 252 [2023-11-19 07:38:14,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:15,520 INFO L124 PetriNetUnfolderBase]: 3852/5908 cut-off events. [2023-11-19 07:38:15,520 INFO L125 PetriNetUnfolderBase]: For 2595/2601 co-relation queries the response was YES. [2023-11-19 07:38:15,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16334 conditions, 5908 events. 3852/5908 cut-off events. For 2595/2601 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 34456 event pairs, 585 based on Foata normal form. 350/6127 useless extension candidates. Maximal degree in co-relation 16318. Up to 1828 conditions per place. [2023-11-19 07:38:15,570 INFO L140 encePairwiseOnDemand]: 245/252 looper letters, 82 selfloop transitions, 19 changer transitions 0/109 dead transitions. [2023-11-19 07:38:15,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 109 transitions, 570 flow [2023-11-19 07:38:15,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:38:15,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:38:15,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 894 transitions. [2023-11-19 07:38:15,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5068027210884354 [2023-11-19 07:38:15,575 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 894 transitions. [2023-11-19 07:38:15,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 894 transitions. [2023-11-19 07:38:15,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:15,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 894 transitions. [2023-11-19 07:38:15,579 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) [2023-11-19 07:38:15,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:15,586 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:15,586 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 172 flow. Second operand 7 states and 894 transitions. [2023-11-19 07:38:15,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 109 transitions, 570 flow [2023-11-19 07:38:15,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 109 transitions, 565 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:38:15,606 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 301 flow [2023-11-19 07:38:15,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=301, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2023-11-19 07:38:15,608 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 12 predicate places. [2023-11-19 07:38:15,608 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 301 flow [2023-11-19 07:38:15,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:15,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:15,609 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] [2023-11-19 07:38:15,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:38:15,609 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:38:15,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:15,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1962694113, now seen corresponding path program 1 times [2023-11-19 07:38:15,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:15,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851599457] [2023-11-19 07:38:15,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:15,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:16,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:16,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:16,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851599457] [2023-11-19 07:38:16,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851599457] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:16,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:16,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:38:16,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567528580] [2023-11-19 07:38:16,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:16,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:38:16,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:16,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:38:16,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:38:16,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 252 [2023-11-19 07:38:16,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 301 flow. Second operand has 5 states, 5 states have (on average 118.6) internal successors, (593), 5 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:16,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:16,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 252 [2023-11-19 07:38:16,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:18,185 INFO L124 PetriNetUnfolderBase]: 7240/11530 cut-off events. [2023-11-19 07:38:18,186 INFO L125 PetriNetUnfolderBase]: For 20490/20503 co-relation queries the response was YES. [2023-11-19 07:38:18,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38862 conditions, 11530 events. 7240/11530 cut-off events. For 20490/20503 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 78661 event pairs, 2310 based on Foata normal form. 58/11397 useless extension candidates. Maximal degree in co-relation 38842. Up to 6003 conditions per place. [2023-11-19 07:38:18,273 INFO L140 encePairwiseOnDemand]: 244/252 looper letters, 149 selfloop transitions, 16 changer transitions 2/175 dead transitions. [2023-11-19 07:38:18,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 175 transitions, 1491 flow [2023-11-19 07:38:18,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:38:18,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:38:18,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 777 transitions. [2023-11-19 07:38:18,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2023-11-19 07:38:18,277 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 777 transitions. [2023-11-19 07:38:18,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 777 transitions. [2023-11-19 07:38:18,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:18,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 777 transitions. [2023-11-19 07:38:18,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 129.5) internal successors, (777), 6 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:18,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 252.0) internal successors, (1764), 7 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:18,285 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 252.0) internal successors, (1764), 7 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:18,285 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 301 flow. Second operand 6 states and 777 transitions. [2023-11-19 07:38:18,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 175 transitions, 1491 flow [2023-11-19 07:38:19,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 175 transitions, 1271 flow, removed 77 selfloop flow, removed 3 redundant places. [2023-11-19 07:38:19,251 INFO L231 Difference]: Finished difference. Result has 60 places, 69 transitions, 393 flow [2023-11-19 07:38:19,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=393, PETRI_PLACES=60, PETRI_TRANSITIONS=69} [2023-11-19 07:38:19,252 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 17 predicate places. [2023-11-19 07:38:19,252 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 69 transitions, 393 flow [2023-11-19 07:38:19,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 118.6) internal successors, (593), 5 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:19,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:19,253 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] [2023-11-19 07:38:19,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:38:19,254 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:38:19,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:19,254 INFO L85 PathProgramCache]: Analyzing trace with hash -855352779, now seen corresponding path program 2 times [2023-11-19 07:38:19,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:19,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768782444] [2023-11-19 07:38:19,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:19,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:19,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:19,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:19,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:19,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768782444] [2023-11-19 07:38:19,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768782444] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:19,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:19,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:38:19,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127173978] [2023-11-19 07:38:19,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:19,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:38:19,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:19,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:38:19,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:38:19,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 252 [2023-11-19 07:38:19,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 69 transitions, 393 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) [2023-11-19 07:38:19,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:19,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 252 [2023-11-19 07:38:19,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:21,541 INFO L124 PetriNetUnfolderBase]: 6532/10125 cut-off events. [2023-11-19 07:38:21,541 INFO L125 PetriNetUnfolderBase]: For 15900/15955 co-relation queries the response was YES. [2023-11-19 07:38:21,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34933 conditions, 10125 events. 6532/10125 cut-off events. For 15900/15955 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 66575 event pairs, 498 based on Foata normal form. 284/10214 useless extension candidates. Maximal degree in co-relation 34911. Up to 2462 conditions per place. [2023-11-19 07:38:21,631 INFO L140 encePairwiseOnDemand]: 245/252 looper letters, 172 selfloop transitions, 28 changer transitions 42/250 dead transitions. [2023-11-19 07:38:21,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 250 transitions, 1696 flow [2023-11-19 07:38:21,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:38:21,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 07:38:21,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1149 transitions. [2023-11-19 07:38:21,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5066137566137566 [2023-11-19 07:38:21,637 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1149 transitions. [2023-11-19 07:38:21,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1149 transitions. [2023-11-19 07:38:21,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:21,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1149 transitions. [2023-11-19 07:38:21,643 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) [2023-11-19 07:38:21,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 252.0) internal successors, (2520), 10 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:21,650 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 252.0) internal successors, (2520), 10 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:21,650 INFO L175 Difference]: Start difference. First operand has 60 places, 69 transitions, 393 flow. Second operand 9 states and 1149 transitions. [2023-11-19 07:38:21,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 250 transitions, 1696 flow [2023-11-19 07:38:22,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 250 transitions, 1694 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-19 07:38:22,323 INFO L231 Difference]: Finished difference. Result has 71 places, 75 transitions, 557 flow [2023-11-19 07:38:22,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=557, PETRI_PLACES=71, PETRI_TRANSITIONS=75} [2023-11-19 07:38:22,324 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 28 predicate places. [2023-11-19 07:38:22,325 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 75 transitions, 557 flow [2023-11-19 07:38:22,325 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) [2023-11-19 07:38:22,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:22,325 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] [2023-11-19 07:38:22,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:38:22,326 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:38:22,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:22,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1614463259, now seen corresponding path program 1 times [2023-11-19 07:38:22,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:22,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734847160] [2023-11-19 07:38:22,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:22,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:22,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:23,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:23,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:23,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734847160] [2023-11-19 07:38:23,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734847160] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:23,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:23,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:38:23,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896010209] [2023-11-19 07:38:23,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:23,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:38:23,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:23,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:38:23,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:38:23,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 252 [2023-11-19 07:38:23,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 75 transitions, 557 flow. Second operand has 7 states, 7 states have (on average 117.0) internal successors, (819), 7 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:23,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:23,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 252 [2023-11-19 07:38:23,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:25,810 INFO L124 PetriNetUnfolderBase]: 7444/12267 cut-off events. [2023-11-19 07:38:25,810 INFO L125 PetriNetUnfolderBase]: For 36627/37174 co-relation queries the response was YES. [2023-11-19 07:38:25,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49532 conditions, 12267 events. 7444/12267 cut-off events. For 36627/37174 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 89387 event pairs, 1283 based on Foata normal form. 299/12416 useless extension candidates. Maximal degree in co-relation 49505. Up to 3885 conditions per place. [2023-11-19 07:38:25,896 INFO L140 encePairwiseOnDemand]: 245/252 looper letters, 183 selfloop transitions, 18 changer transitions 27/236 dead transitions. [2023-11-19 07:38:25,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 236 transitions, 2416 flow [2023-11-19 07:38:25,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:38:25,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:38:25,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 883 transitions. [2023-11-19 07:38:25,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5005668934240363 [2023-11-19 07:38:25,901 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 883 transitions. [2023-11-19 07:38:25,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 883 transitions. [2023-11-19 07:38:25,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:25,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 883 transitions. [2023-11-19 07:38:25,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 126.14285714285714) internal successors, (883), 7 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:25,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:25,910 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:25,910 INFO L175 Difference]: Start difference. First operand has 71 places, 75 transitions, 557 flow. Second operand 7 states and 883 transitions. [2023-11-19 07:38:25,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 236 transitions, 2416 flow [2023-11-19 07:38:27,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 236 transitions, 1954 flow, removed 162 selfloop flow, removed 5 redundant places. [2023-11-19 07:38:27,590 INFO L231 Difference]: Finished difference. Result has 76 places, 83 transitions, 610 flow [2023-11-19 07:38:27,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=610, PETRI_PLACES=76, PETRI_TRANSITIONS=83} [2023-11-19 07:38:27,591 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 33 predicate places. [2023-11-19 07:38:27,591 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 83 transitions, 610 flow [2023-11-19 07:38:27,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 117.0) internal successors, (819), 7 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:27,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:27,592 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] [2023-11-19 07:38:27,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:38:27,592 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:38:27,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:27,593 INFO L85 PathProgramCache]: Analyzing trace with hash -188764881, now seen corresponding path program 2 times [2023-11-19 07:38:27,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:27,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559806166] [2023-11-19 07:38:27,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:27,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:27,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:27,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:27,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:27,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559806166] [2023-11-19 07:38:27,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559806166] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:27,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:27,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:38:27,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235113398] [2023-11-19 07:38:27,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:27,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:38:27,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:27,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:38:27,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:38:27,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 252 [2023-11-19 07:38:27,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 83 transitions, 610 flow. Second operand has 5 states, 5 states have (on average 113.8) internal successors, (569), 5 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:27,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:27,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 252 [2023-11-19 07:38:27,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:31,265 INFO L124 PetriNetUnfolderBase]: 16268/24246 cut-off events. [2023-11-19 07:38:31,266 INFO L125 PetriNetUnfolderBase]: For 50637/50637 co-relation queries the response was YES. [2023-11-19 07:38:31,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92188 conditions, 24246 events. 16268/24246 cut-off events. For 50637/50637 co-relation queries the response was YES. Maximal size of possible extension queue 973. Compared 160650 event pairs, 1983 based on Foata normal form. 16/24262 useless extension candidates. Maximal degree in co-relation 92157. Up to 11325 conditions per place. [2023-11-19 07:38:31,413 INFO L140 encePairwiseOnDemand]: 245/252 looper letters, 108 selfloop transitions, 10 changer transitions 114/232 dead transitions. [2023-11-19 07:38:31,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 232 transitions, 2104 flow [2023-11-19 07:38:31,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:38:31,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:38:31,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 749 transitions. [2023-11-19 07:38:31,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49537037037037035 [2023-11-19 07:38:31,420 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 749 transitions. [2023-11-19 07:38:31,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 749 transitions. [2023-11-19 07:38:31,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:31,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 749 transitions. [2023-11-19 07:38:31,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 124.83333333333333) internal successors, (749), 6 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:31,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 252.0) internal successors, (1764), 7 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:31,427 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 252.0) internal successors, (1764), 7 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:31,427 INFO L175 Difference]: Start difference. First operand has 76 places, 83 transitions, 610 flow. Second operand 6 states and 749 transitions. [2023-11-19 07:38:31,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 232 transitions, 2104 flow [2023-11-19 07:38:35,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 232 transitions, 2097 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-19 07:38:35,553 INFO L231 Difference]: Finished difference. Result has 82 places, 63 transitions, 446 flow [2023-11-19 07:38:35,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=446, PETRI_PLACES=82, PETRI_TRANSITIONS=63} [2023-11-19 07:38:35,555 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 39 predicate places. [2023-11-19 07:38:35,555 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 63 transitions, 446 flow [2023-11-19 07:38:35,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.8) internal successors, (569), 5 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:35,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:35,556 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] [2023-11-19 07:38:35,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:38:35,557 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:38:35,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:35,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1554489234, now seen corresponding path program 1 times [2023-11-19 07:38:35,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:35,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696831727] [2023-11-19 07:38:35,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:35,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:35,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:36,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:36,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:36,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696831727] [2023-11-19 07:38:36,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696831727] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:36,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:36,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:38:36,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545991950] [2023-11-19 07:38:36,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:36,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:38:36,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:36,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:38:36,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:38:36,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 252 [2023-11-19 07:38:36,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 63 transitions, 446 flow. Second operand has 8 states, 8 states have (on average 108.0) internal successors, (864), 8 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:36,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:36,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 252 [2023-11-19 07:38:36,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:38,996 INFO L124 PetriNetUnfolderBase]: 8023/12134 cut-off events. [2023-11-19 07:38:38,996 INFO L125 PetriNetUnfolderBase]: For 26436/26436 co-relation queries the response was YES. [2023-11-19 07:38:39,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47395 conditions, 12134 events. 8023/12134 cut-off events. For 26436/26436 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 71687 event pairs, 908 based on Foata normal form. 15/12149 useless extension candidates. Maximal degree in co-relation 47371. Up to 5315 conditions per place. [2023-11-19 07:38:39,141 INFO L140 encePairwiseOnDemand]: 240/252 looper letters, 136 selfloop transitions, 39 changer transitions 90/265 dead transitions. [2023-11-19 07:38:39,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 265 transitions, 2181 flow [2023-11-19 07:38:39,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-19 07:38:39,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-19 07:38:39,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1965 transitions. [2023-11-19 07:38:39,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4586834733893557 [2023-11-19 07:38:39,155 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1965 transitions. [2023-11-19 07:38:39,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1965 transitions. [2023-11-19 07:38:39,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:39,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1965 transitions. [2023-11-19 07:38:39,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 115.58823529411765) internal successors, (1965), 17 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:39,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 252.0) internal successors, (4536), 18 states have internal predecessors, (4536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:39,178 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 252.0) internal successors, (4536), 18 states have internal predecessors, (4536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:39,178 INFO L175 Difference]: Start difference. First operand has 82 places, 63 transitions, 446 flow. Second operand 17 states and 1965 transitions. [2023-11-19 07:38:39,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 265 transitions, 2181 flow [2023-11-19 07:38:40,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 265 transitions, 1998 flow, removed 79 selfloop flow, removed 8 redundant places. [2023-11-19 07:38:40,060 INFO L231 Difference]: Finished difference. Result has 87 places, 98 transitions, 744 flow [2023-11-19 07:38:40,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=744, PETRI_PLACES=87, PETRI_TRANSITIONS=98} [2023-11-19 07:38:40,061 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 44 predicate places. [2023-11-19 07:38:40,061 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 98 transitions, 744 flow [2023-11-19 07:38:40,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 108.0) internal successors, (864), 8 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:40,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:40,062 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] [2023-11-19 07:38:40,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:38:40,063 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:38:40,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:40,064 INFO L85 PathProgramCache]: Analyzing trace with hash 960889288, now seen corresponding path program 2 times [2023-11-19 07:38:40,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:40,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041165821] [2023-11-19 07:38:40,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:40,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:40,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:40,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:40,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:40,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041165821] [2023-11-19 07:38:40,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041165821] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:40,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:41,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:38:41,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201713121] [2023-11-19 07:38:41,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:41,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:38:41,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:41,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:38:41,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:38:41,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 252 [2023-11-19 07:38:41,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 98 transitions, 744 flow. Second operand has 7 states, 7 states have (on average 110.42857142857143) internal successors, (773), 7 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:41,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:41,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 252 [2023-11-19 07:38:41,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:38:43,383 INFO L124 PetriNetUnfolderBase]: 7686/11825 cut-off events. [2023-11-19 07:38:43,383 INFO L125 PetriNetUnfolderBase]: For 31443/31443 co-relation queries the response was YES. [2023-11-19 07:38:43,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49203 conditions, 11825 events. 7686/11825 cut-off events. For 31443/31443 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 71795 event pairs, 1345 based on Foata normal form. 9/11834 useless extension candidates. Maximal degree in co-relation 49178. Up to 5701 conditions per place. [2023-11-19 07:38:43,491 INFO L140 encePairwiseOnDemand]: 240/252 looper letters, 165 selfloop transitions, 49 changer transitions 26/240 dead transitions. [2023-11-19 07:38:43,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 240 transitions, 2050 flow [2023-11-19 07:38:43,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:38:43,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 07:38:43,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1101 transitions. [2023-11-19 07:38:43,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48544973544973546 [2023-11-19 07:38:43,496 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1101 transitions. [2023-11-19 07:38:43,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1101 transitions. [2023-11-19 07:38:43,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:43,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1101 transitions. [2023-11-19 07:38:43,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 122.33333333333333) internal successors, (1101), 9 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:43,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 252.0) internal successors, (2520), 10 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:43,507 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 252.0) internal successors, (2520), 10 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:43,508 INFO L175 Difference]: Start difference. First operand has 87 places, 98 transitions, 744 flow. Second operand 9 states and 1101 transitions. [2023-11-19 07:38:43,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 240 transitions, 2050 flow [2023-11-19 07:38:44,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 240 transitions, 2010 flow, removed 20 selfloop flow, removed 1 redundant places. [2023-11-19 07:38:44,408 INFO L231 Difference]: Finished difference. Result has 95 places, 111 transitions, 975 flow [2023-11-19 07:38:44,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=975, PETRI_PLACES=95, PETRI_TRANSITIONS=111} [2023-11-19 07:38:44,410 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 52 predicate places. [2023-11-19 07:38:44,410 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 111 transitions, 975 flow [2023-11-19 07:38:44,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 110.42857142857143) internal successors, (773), 7 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:44,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:38:44,411 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] [2023-11-19 07:38:44,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:38:44,411 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:38:44,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:44,412 INFO L85 PathProgramCache]: Analyzing trace with hash 259182905, now seen corresponding path program 3 times [2023-11-19 07:38:44,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:44,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500310168] [2023-11-19 07:38:44,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:44,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:44,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:44,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:44,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:44,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500310168] [2023-11-19 07:38:44,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500310168] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:44,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:44,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:38:44,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087102782] [2023-11-19 07:38:44,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:44,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:38:44,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:44,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:38:44,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:38:44,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 252 [2023-11-19 07:38:44,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 111 transitions, 975 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) [2023-11-19 07:38:44,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:38:44,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 252 [2023-11-19 07:38:44,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand