./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix026.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3919189d-fe03-4b77-8ee4-588f570a5f19/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3919189d-fe03-4b77-8ee4-588f570a5f19/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3919189d-fe03-4b77-8ee4-588f570a5f19/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3919189d-fe03-4b77-8ee4-588f570a5f19/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix026.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3919189d-fe03-4b77-8ee4-588f570a5f19/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3919189d-fe03-4b77-8ee4-588f570a5f19/bin/uautomizer-verify-bycVGegfSx --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 a107688f8a9743f96e4ba7fbbac745d7f444b48f461db6b6c74848593b202e05 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:05:51,047 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:05:51,116 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3919189d-fe03-4b77-8ee4-588f570a5f19/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-21 22:05:51,122 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:05:51,122 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:05:51,148 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:05:51,149 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:05:51,150 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:05:51,151 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:05:51,152 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:05:51,152 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:05:51,153 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:05:51,154 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:05:51,155 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:05:51,156 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:05:51,156 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:05:51,157 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:05:51,158 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:05:51,159 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:05:51,159 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:05:51,164 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:05:51,164 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:05:51,165 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:05:51,166 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:05:51,166 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:05:51,166 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:05:51,167 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:05:51,167 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:05:51,168 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:05:51,168 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:05:51,169 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:05:51,169 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:05:51,170 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:05:51,170 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:05:51,171 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:05:51,171 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:05:51,172 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:05:51,172 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:05:51,173 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:05:51,173 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:05:51,174 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:05:51,174 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:05:51,175 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_3919189d-fe03-4b77-8ee4-588f570a5f19/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3919189d-fe03-4b77-8ee4-588f570a5f19/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a107688f8a9743f96e4ba7fbbac745d7f444b48f461db6b6c74848593b202e05 [2023-11-21 22:05:51,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:05:51,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:05:51,490 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:05:51,491 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:05:51,492 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:05:51,493 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3919189d-fe03-4b77-8ee4-588f570a5f19/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/pthread-wmm/mix026.oepc.i [2023-11-21 22:05:54,490 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:05:54,801 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:05:54,801 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3919189d-fe03-4b77-8ee4-588f570a5f19/sv-benchmarks/c/pthread-wmm/mix026.oepc.i [2023-11-21 22:05:54,831 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3919189d-fe03-4b77-8ee4-588f570a5f19/bin/uautomizer-verify-bycVGegfSx/data/b10edbd13/600c3bdd9ee6470c9f86afe4075db85d/FLAG0fac1f078 [2023-11-21 22:05:54,846 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3919189d-fe03-4b77-8ee4-588f570a5f19/bin/uautomizer-verify-bycVGegfSx/data/b10edbd13/600c3bdd9ee6470c9f86afe4075db85d [2023-11-21 22:05:54,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:05:54,850 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:05:54,852 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:05:54,852 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:05:54,864 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:05:54,865 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:05:54" (1/1) ... [2023-11-21 22:05:54,866 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b65464b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:54, skipping insertion in model container [2023-11-21 22:05:54,866 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:05:54" (1/1) ... [2023-11-21 22:05:54,919 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:05:55,086 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_3919189d-fe03-4b77-8ee4-588f570a5f19/sv-benchmarks/c/pthread-wmm/mix026.oepc.i[945,958] [2023-11-21 22:05:55,374 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:05:55,386 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:05:55,398 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_3919189d-fe03-4b77-8ee4-588f570a5f19/sv-benchmarks/c/pthread-wmm/mix026.oepc.i[945,958] [2023-11-21 22:05:55,448 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:05:55,483 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:05:55,483 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:05:55,491 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:05:55,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:55 WrapperNode [2023-11-21 22:05:55,492 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:05:55,493 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:05:55,493 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:05:55,494 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:05:55,502 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:55" (1/1) ... [2023-11-21 22:05:55,519 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:55" (1/1) ... [2023-11-21 22:05:55,551 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 144 [2023-11-21 22:05:55,552 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:05:55,553 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:05:55,553 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:05:55,553 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:05:55,565 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:55" (1/1) ... [2023-11-21 22:05:55,565 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:55" (1/1) ... [2023-11-21 22:05:55,579 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:55" (1/1) ... [2023-11-21 22:05:55,610 INFO L187 HeapSplitter]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1] [2023-11-21 22:05:55,618 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:55" (1/1) ... [2023-11-21 22:05:55,619 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:55" (1/1) ... [2023-11-21 22:05:55,629 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:55" (1/1) ... [2023-11-21 22:05:55,640 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:55" (1/1) ... [2023-11-21 22:05:55,643 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:55" (1/1) ... [2023-11-21 22:05:55,654 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:55" (1/1) ... [2023-11-21 22:05:55,658 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:05:55,664 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:05:55,665 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:05:55,665 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:05:55,666 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:55" (1/1) ... [2023-11-21 22:05:55,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:05:55,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3919189d-fe03-4b77-8ee4-588f570a5f19/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:05:55,706 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3919189d-fe03-4b77-8ee4-588f570a5f19/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:05:55,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3919189d-fe03-4b77-8ee4-588f570a5f19/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:05:55,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-21 22:05:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-21 22:05:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-21 22:05:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-21 22:05:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-21 22:05:55,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 22:05:55,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:05:55,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:05:55,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:05:55,779 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-21 22:05:55,780 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-21 22:05:55,780 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-21 22:05:55,780 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-21 22:05:55,780 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-21 22:05:55,808 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-21 22:05:55,809 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-21 22:05:55,810 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-21 22:05:55,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:05:55,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 22:05:55,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-21 22:05:55,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-21 22:05:55,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-21 22:05:55,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 22:05:55,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:05:55,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:05:55,814 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 22:05:56,039 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:05:56,043 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:05:56,491 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:05:56,765 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:05:56,765 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 22:05:56,767 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:05:56 BoogieIcfgContainer [2023-11-21 22:05:56,768 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:05:56,774 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:05:56,774 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:05:56,777 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:05:56,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:05:54" (1/3) ... [2023-11-21 22:05:56,779 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b05f2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:05:56, skipping insertion in model container [2023-11-21 22:05:56,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:05:55" (2/3) ... [2023-11-21 22:05:56,779 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b05f2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:05:56, skipping insertion in model container [2023-11-21 22:05:56,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:05:56" (3/3) ... [2023-11-21 22:05:56,781 INFO L112 eAbstractionObserver]: Analyzing ICFG mix026.oepc.i [2023-11-21 22:05:56,794 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-21 22:05:56,805 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:05:56,805 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-21 22:05:56,805 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:05:56,878 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 22:05:56,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 49 transitions, 114 flow [2023-11-21 22:05:56,956 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2023-11-21 22:05:56,957 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:05:56,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 91 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2023-11-21 22:05:56,962 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 49 transitions, 114 flow [2023-11-21 22:05:56,974 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 45 transitions, 102 flow [2023-11-21 22:05:56,987 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:05:56,994 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;@27ce0792, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:05:56,994 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-21 22:05:56,999 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:05:56,999 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-21 22:05:56,999 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:05:57,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:05:57,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-21 22:05:57,001 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-21 22:05:57,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:57,006 INFO L85 PathProgramCache]: Analyzing trace with hash 12242167, now seen corresponding path program 1 times [2023-11-21 22:05:57,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:57,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062600572] [2023-11-21 22:05:57,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:57,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:05:57,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:05:57,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:05:57,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062600572] [2023-11-21 22:05:57,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062600572] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:05:57,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:05:57,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:05:57,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235372766] [2023-11-21 22:05:57,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:05:57,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:05:57,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:05:57,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:05:57,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:05:57,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 49 [2023-11-21 22:05:57,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:05:57,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:05:57,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 49 [2023-11-21 22:05:57,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:05:58,815 INFO L124 PetriNetUnfolderBase]: 2495/4136 cut-off events. [2023-11-21 22:05:58,816 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-11-21 22:05:58,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7712 conditions, 4136 events. 2495/4136 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 28499 event pairs, 443 based on Foata normal form. 135/4199 useless extension candidates. Maximal degree in co-relation 7700. Up to 2779 conditions per place. [2023-11-21 22:05:58,867 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 37 selfloop transitions, 2 changer transitions 2/61 dead transitions. [2023-11-21 22:05:58,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 61 transitions, 225 flow [2023-11-21 22:05:58,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:05:58,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:05:58,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2023-11-21 22:05:58,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7891156462585034 [2023-11-21 22:05:58,882 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 116 transitions. [2023-11-21 22:05:58,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 116 transitions. [2023-11-21 22:05:58,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:05:58,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 116 transitions. [2023-11-21 22:05:58,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:05:58,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:05:58,893 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:05:58,895 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 102 flow. Second operand 3 states and 116 transitions. [2023-11-21 22:05:58,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 61 transitions, 225 flow [2023-11-21 22:05:58,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 61 transitions, 218 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-21 22:05:58,908 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 96 flow [2023-11-21 22:05:58,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2023-11-21 22:05:58,914 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -3 predicate places. [2023-11-21 22:05:58,914 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 96 flow [2023-11-21 22:05:58,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:05:58,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:05:58,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:05:58,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:05:58,919 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)] === [2023-11-21 22:05:58,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:05:58,920 INFO L85 PathProgramCache]: Analyzing trace with hash -959684712, now seen corresponding path program 1 times [2023-11-21 22:05:58,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:05:58,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137461722] [2023-11-21 22:05:58,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:05:58,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:05:59,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:05:59,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:05:59,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:05:59,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137461722] [2023-11-21 22:05:59,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137461722] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:05:59,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:05:59,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:05:59,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090062705] [2023-11-21 22:05:59,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:05:59,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:05:59,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:05:59,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:05:59,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:05:59,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2023-11-21 22:05:59,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:05:59,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:05:59,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2023-11-21 22:05:59,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:06:05,927 INFO L124 PetriNetUnfolderBase]: 27273/38874 cut-off events. [2023-11-21 22:06:05,927 INFO L125 PetriNetUnfolderBase]: For 1859/1859 co-relation queries the response was YES. [2023-11-21 22:06:06,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77791 conditions, 38874 events. 27273/38874 cut-off events. For 1859/1859 co-relation queries the response was YES. Maximal size of possible extension queue 1790. Compared 274182 event pairs, 6785 based on Foata normal form. 0/37896 useless extension candidates. Maximal degree in co-relation 77781. Up to 15294 conditions per place. [2023-11-21 22:06:06,198 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 48 selfloop transitions, 7 changer transitions 96/163 dead transitions. [2023-11-21 22:06:06,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 163 transitions, 660 flow [2023-11-21 22:06:06,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:06:06,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-21 22:06:06,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 297 transitions. [2023-11-21 22:06:06,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.673469387755102 [2023-11-21 22:06:06,203 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 297 transitions. [2023-11-21 22:06:06,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 297 transitions. [2023-11-21 22:06:06,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:06:06,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 297 transitions. [2023-11-21 22:06:06,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:06:06,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 49.0) internal successors, (490), 10 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:06:06,209 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 49.0) internal successors, (490), 10 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:06:06,209 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 96 flow. Second operand 9 states and 297 transitions. [2023-11-21 22:06:06,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 163 transitions, 660 flow [2023-11-21 22:06:06,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 163 transitions, 642 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:06:06,215 INFO L231 Difference]: Finished difference. Result has 67 places, 47 transitions, 188 flow [2023-11-21 22:06:06,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=188, PETRI_PLACES=67, PETRI_TRANSITIONS=47} [2023-11-21 22:06:06,216 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2023-11-21 22:06:06,216 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 47 transitions, 188 flow [2023-11-21 22:06:06,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:06:06,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:06:06,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:06:06,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:06:06,218 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)] === [2023-11-21 22:06:06,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:06:06,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1708696199, now seen corresponding path program 1 times [2023-11-21 22:06:06,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:06:06,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896619968] [2023-11-21 22:06:06,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:06,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:06:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:06,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:06:06,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:06:06,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896619968] [2023-11-21 22:06:06,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896619968] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:06:06,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:06:06,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:06:06,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185351602] [2023-11-21 22:06:06,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:06:06,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:06:06,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:06:06,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:06:06,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:06:06,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 49 [2023-11-21 22:06:06,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 47 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:06:06,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:06:06,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 49 [2023-11-21 22:06:06,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:06:10,561 INFO L124 PetriNetUnfolderBase]: 14758/22810 cut-off events. [2023-11-21 22:06:10,562 INFO L125 PetriNetUnfolderBase]: For 19976/20731 co-relation queries the response was YES. [2023-11-21 22:06:10,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59656 conditions, 22810 events. 14758/22810 cut-off events. For 19976/20731 co-relation queries the response was YES. Maximal size of possible extension queue 1192. Compared 174247 event pairs, 3911 based on Foata normal form. 793/22713 useless extension candidates. Maximal degree in co-relation 59638. Up to 12073 conditions per place. [2023-11-21 22:06:10,751 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 34 selfloop transitions, 3 changer transitions 43/100 dead transitions. [2023-11-21 22:06:10,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 100 transitions, 512 flow [2023-11-21 22:06:10,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:06:10,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-21 22:06:10,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 216 transitions. [2023-11-21 22:06:10,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6297376093294461 [2023-11-21 22:06:10,756 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 216 transitions. [2023-11-21 22:06:10,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 216 transitions. [2023-11-21 22:06:10,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:06:10,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 216 transitions. [2023-11-21 22:06:10,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 30.857142857142858) internal successors, (216), 7 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:06:10,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 49.0) internal successors, (392), 8 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:06:10,763 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 49.0) internal successors, (392), 8 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:06:10,763 INFO L175 Difference]: Start difference. First operand has 67 places, 47 transitions, 188 flow. Second operand 7 states and 216 transitions. [2023-11-21 22:06:10,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 100 transitions, 512 flow [2023-11-21 22:06:11,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 100 transitions, 462 flow, removed 14 selfloop flow, removed 4 redundant places. [2023-11-21 22:06:11,187 INFO L231 Difference]: Finished difference. Result has 67 places, 47 transitions, 177 flow [2023-11-21 22:06:11,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=177, PETRI_PLACES=67, PETRI_TRANSITIONS=47} [2023-11-21 22:06:11,189 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2023-11-21 22:06:11,190 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 47 transitions, 177 flow [2023-11-21 22:06:11,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:06:11,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:06:11,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:06:11,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:06:11,191 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)] === [2023-11-21 22:06:11,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:06:11,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1960942580, now seen corresponding path program 1 times [2023-11-21 22:06:11,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:06:11,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189857681] [2023-11-21 22:06:11,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:11,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:06:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:11,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:06:11,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:06:11,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189857681] [2023-11-21 22:06:11,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189857681] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:06:11,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:06:11,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:06:11,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405106383] [2023-11-21 22:06:11,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:06:11,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:06:11,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:06:11,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:06:11,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:06:11,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2023-11-21 22:06:11,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 47 transitions, 177 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:06:11,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:06:11,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2023-11-21 22:06:11,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:06:16,146 INFO L124 PetriNetUnfolderBase]: 25615/38375 cut-off events. [2023-11-21 22:06:16,146 INFO L125 PetriNetUnfolderBase]: For 21079/26792 co-relation queries the response was YES. [2023-11-21 22:06:16,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89691 conditions, 38375 events. 25615/38375 cut-off events. For 21079/26792 co-relation queries the response was YES. Maximal size of possible extension queue 1714. Compared 282850 event pairs, 4262 based on Foata normal form. 1721/38960 useless extension candidates. Maximal degree in co-relation 89670. Up to 19296 conditions per place. [2023-11-21 22:06:16,489 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 56 selfloop transitions, 6 changer transitions 0/81 dead transitions. [2023-11-21 22:06:16,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 81 transitions, 391 flow [2023-11-21 22:06:16,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:06:16,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:06:16,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2023-11-21 22:06:16,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6989795918367347 [2023-11-21 22:06:16,492 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 137 transitions. [2023-11-21 22:06:16,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 137 transitions. [2023-11-21 22:06:16,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:06:16,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 137 transitions. [2023-11-21 22:06:16,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:06:16,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:06:16,495 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:06:16,495 INFO L175 Difference]: Start difference. First operand has 67 places, 47 transitions, 177 flow. Second operand 4 states and 137 transitions. [2023-11-21 22:06:16,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 81 transitions, 391 flow [2023-11-21 22:06:17,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 81 transitions, 373 flow, removed 6 selfloop flow, removed 8 redundant places. [2023-11-21 22:06:17,213 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 205 flow [2023-11-21 22:06:17,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=205, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2023-11-21 22:06:17,215 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 3 predicate places. [2023-11-21 22:06:17,215 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 205 flow [2023-11-21 22:06:17,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:06:17,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:06:17,217 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] [2023-11-21 22:06:17,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:06:17,217 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)] === [2023-11-21 22:06:17,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:06:17,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1682692199, now seen corresponding path program 1 times [2023-11-21 22:06:17,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:06:17,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501720683] [2023-11-21 22:06:17,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:17,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:06:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:17,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:06:17,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:06:17,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501720683] [2023-11-21 22:06:17,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501720683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:06:17,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:06:17,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:06:17,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37252625] [2023-11-21 22:06:17,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:06:17,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:06:17,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:06:17,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:06:17,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:06:17,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2023-11-21 22:06:17,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 205 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:06:17,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:06:17,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2023-11-21 22:06:17,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:06:21,442 INFO L124 PetriNetUnfolderBase]: 21210/31792 cut-off events. [2023-11-21 22:06:21,442 INFO L125 PetriNetUnfolderBase]: For 17047/21662 co-relation queries the response was YES. [2023-11-21 22:06:21,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81534 conditions, 31792 events. 21210/31792 cut-off events. For 17047/21662 co-relation queries the response was YES. Maximal size of possible extension queue 1358. Compared 225974 event pairs, 2674 based on Foata normal form. 1497/32351 useless extension candidates. Maximal degree in co-relation 81517. Up to 11176 conditions per place. [2023-11-21 22:06:21,878 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 73 selfloop transitions, 10 changer transitions 0/102 dead transitions. [2023-11-21 22:06:21,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 102 transitions, 524 flow [2023-11-21 22:06:21,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:06:21,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-21 22:06:21,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 176 transitions. [2023-11-21 22:06:21,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7183673469387755 [2023-11-21 22:06:21,881 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 176 transitions. [2023-11-21 22:06:21,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 176 transitions. [2023-11-21 22:06:21,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:06:21,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 176 transitions. [2023-11-21 22:06:21,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:06:21,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 49.0) internal successors, (294), 6 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:06:21,887 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 49.0) internal successors, (294), 6 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:06:21,887 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 205 flow. Second operand 5 states and 176 transitions. [2023-11-21 22:06:21,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 102 transitions, 524 flow [2023-11-21 22:06:21,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 102 transitions, 521 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:06:21,894 INFO L231 Difference]: Finished difference. Result has 65 places, 57 transitions, 270 flow [2023-11-21 22:06:21,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=270, PETRI_PLACES=65, PETRI_TRANSITIONS=57} [2023-11-21 22:06:21,898 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 8 predicate places. [2023-11-21 22:06:21,898 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 57 transitions, 270 flow [2023-11-21 22:06:21,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:06:21,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:06:21,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:06:21,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 22:06:21,899 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)] === [2023-11-21 22:06:21,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:06:21,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1314008543, now seen corresponding path program 1 times [2023-11-21 22:06:21,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:06:21,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203414298] [2023-11-21 22:06:21,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:21,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:06:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:22,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:06:22,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:06:22,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203414298] [2023-11-21 22:06:22,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203414298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:06:22,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:06:22,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 22:06:22,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170727993] [2023-11-21 22:06:22,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:06:22,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:06:22,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:06:22,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:06:22,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:06:22,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2023-11-21 22:06:22,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 57 transitions, 270 flow. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:06:22,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:06:22,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2023-11-21 22:06:22,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:06:27,692 INFO L124 PetriNetUnfolderBase]: 23108/38197 cut-off events. [2023-11-21 22:06:27,692 INFO L125 PetriNetUnfolderBase]: For 29207/37840 co-relation queries the response was YES. [2023-11-21 22:06:27,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100474 conditions, 38197 events. 23108/38197 cut-off events. For 29207/37840 co-relation queries the response was YES. Maximal size of possible extension queue 2221. Compared 338209 event pairs, 8704 based on Foata normal form. 656/35721 useless extension candidates. Maximal degree in co-relation 100454. Up to 17332 conditions per place. [2023-11-21 22:06:28,019 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 86 selfloop transitions, 20 changer transitions 10/148 dead transitions. [2023-11-21 22:06:28,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 148 transitions, 780 flow [2023-11-21 22:06:28,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 22:06:28,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-21 22:06:28,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 325 transitions. [2023-11-21 22:06:28,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6632653061224489 [2023-11-21 22:06:28,027 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 325 transitions. [2023-11-21 22:06:28,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 325 transitions. [2023-11-21 22:06:28,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:06:28,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 325 transitions. [2023-11-21 22:06:28,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.5) internal successors, (325), 10 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:06:28,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 49.0) internal successors, (539), 11 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:06:28,036 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 49.0) internal successors, (539), 11 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:06:28,036 INFO L175 Difference]: Start difference. First operand has 65 places, 57 transitions, 270 flow. Second operand 10 states and 325 transitions. [2023-11-21 22:06:28,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 148 transitions, 780 flow [2023-11-21 22:06:28,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 148 transitions, 765 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-21 22:06:28,061 INFO L231 Difference]: Finished difference. Result has 80 places, 77 transitions, 430 flow [2023-11-21 22:06:28,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=430, PETRI_PLACES=80, PETRI_TRANSITIONS=77} [2023-11-21 22:06:28,065 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 23 predicate places. [2023-11-21 22:06:28,065 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 77 transitions, 430 flow [2023-11-21 22:06:28,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:06:28,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:06:28,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:06:28,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 22:06:28,066 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)] === [2023-11-21 22:06:28,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:06:28,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1158933021, now seen corresponding path program 2 times [2023-11-21 22:06:28,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:06:28,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638389967] [2023-11-21 22:06:28,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:28,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:06:28,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:28,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:06:28,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:06:28,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638389967] [2023-11-21 22:06:28,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638389967] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:06:28,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:06:28,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:06:28,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754186166] [2023-11-21 22:06:28,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:06:28,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:06:28,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:06:28,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:06:28,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:06:28,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2023-11-21 22:06:28,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 77 transitions, 430 flow. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:06:28,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:06:28,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2023-11-21 22:06:28,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:06:34,836 INFO L124 PetriNetUnfolderBase]: 32643/47673 cut-off events. [2023-11-21 22:06:34,836 INFO L125 PetriNetUnfolderBase]: For 118466/128334 co-relation queries the response was YES. [2023-11-21 22:06:35,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169388 conditions, 47673 events. 32643/47673 cut-off events. For 118466/128334 co-relation queries the response was YES. Maximal size of possible extension queue 2080. Compared 339825 event pairs, 2551 based on Foata normal form. 1981/48043 useless extension candidates. Maximal degree in co-relation 169361. Up to 16576 conditions per place. [2023-11-21 22:06:35,255 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 125 selfloop transitions, 14 changer transitions 23/181 dead transitions. [2023-11-21 22:06:35,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 181 transitions, 1346 flow [2023-11-21 22:06:35,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:06:35,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:06:35,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 213 transitions. [2023-11-21 22:06:35,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7244897959183674 [2023-11-21 22:06:35,257 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 213 transitions. [2023-11-21 22:06:35,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 213 transitions. [2023-11-21 22:06:35,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:06:35,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 213 transitions. [2023-11-21 22:06:35,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 35.5) internal successors, (213), 6 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:06:35,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 49.0) internal successors, (343), 7 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:06:35,261 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 49.0) internal successors, (343), 7 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:06:35,261 INFO L175 Difference]: Start difference. First operand has 80 places, 77 transitions, 430 flow. Second operand 6 states and 213 transitions. [2023-11-21 22:06:35,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 181 transitions, 1346 flow [2023-11-21 22:06:35,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 181 transitions, 1344 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-21 22:06:35,423 INFO L231 Difference]: Finished difference. Result has 85 places, 73 transitions, 449 flow [2023-11-21 22:06:35,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=449, PETRI_PLACES=85, PETRI_TRANSITIONS=73} [2023-11-21 22:06:35,424 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 28 predicate places. [2023-11-21 22:06:35,424 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 73 transitions, 449 flow [2023-11-21 22:06:35,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:06:35,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:06:35,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:06:35,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 22:06:35,426 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)] === [2023-11-21 22:06:35,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:06:35,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1212673884, now seen corresponding path program 1 times [2023-11-21 22:06:35,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:06:35,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275816410] [2023-11-21 22:06:35,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:35,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:06:35,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat