./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix008_power.oepc_pso.oepc_rmo.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_44cfc960-25df-4270-b485-45bc0f8c2ec0/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44cfc960-25df-4270-b485-45bc0f8c2ec0/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_44cfc960-25df-4270-b485-45bc0f8c2ec0/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44cfc960-25df-4270-b485-45bc0f8c2ec0/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix008_power.oepc_pso.oepc_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44cfc960-25df-4270-b485-45bc0f8c2ec0/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_44cfc960-25df-4270-b485-45bc0f8c2ec0/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 773055aaa90ff8ec223993b190a157a4b1c15a4828ef014894ca730726d954aa --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 21:04:29,875 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 21:04:30,019 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44cfc960-25df-4270-b485-45bc0f8c2ec0/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-21 21:04:30,033 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 21:04:30,034 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 21:04:30,077 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 21:04:30,079 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 21:04:30,080 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 21:04:30,081 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 21:04:30,086 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 21:04:30,087 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 21:04:30,088 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 21:04:30,088 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 21:04:30,090 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 21:04:30,091 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 21:04:30,092 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 21:04:30,092 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 21:04:30,093 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 21:04:30,093 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 21:04:30,094 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 21:04:30,094 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 21:04:30,095 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 21:04:30,096 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 21:04:30,096 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 21:04:30,097 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 21:04:30,097 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 21:04:30,098 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 21:04:30,099 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 21:04:30,099 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 21:04:30,100 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 21:04:30,102 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 21:04:30,102 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:04:30,102 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 21:04:30,103 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 21:04:30,103 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 21:04:30,103 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 21:04:30,104 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 21:04:30,104 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 21:04:30,104 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 21:04:30,105 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 21:04:30,105 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 21:04:30,106 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 21:04:30,106 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_44cfc960-25df-4270-b485-45bc0f8c2ec0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44cfc960-25df-4270-b485-45bc0f8c2ec0/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 773055aaa90ff8ec223993b190a157a4b1c15a4828ef014894ca730726d954aa [2023-11-21 21:04:30,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 21:04:30,503 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 21:04:30,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 21:04:30,508 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 21:04:30,509 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 21:04:30,510 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44cfc960-25df-4270-b485-45bc0f8c2ec0/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/pthread-wmm/mix008_power.oepc_pso.oepc_rmo.oepc.i [2023-11-21 21:04:33,980 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 21:04:34,268 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 21:04:34,269 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44cfc960-25df-4270-b485-45bc0f8c2ec0/sv-benchmarks/c/pthread-wmm/mix008_power.oepc_pso.oepc_rmo.oepc.i [2023-11-21 21:04:34,289 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44cfc960-25df-4270-b485-45bc0f8c2ec0/bin/uautomizer-verify-bycVGegfSx/data/8635ebba7/cd7c51a9e46c453dbfc8e6b52eff07a4/FLAGaf4541e45 [2023-11-21 21:04:34,307 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44cfc960-25df-4270-b485-45bc0f8c2ec0/bin/uautomizer-verify-bycVGegfSx/data/8635ebba7/cd7c51a9e46c453dbfc8e6b52eff07a4 [2023-11-21 21:04:34,310 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 21:04:34,312 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 21:04:34,314 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 21:04:34,314 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 21:04:34,323 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 21:04:34,324 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:04:34" (1/1) ... [2023-11-21 21:04:34,327 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@317c02dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:34, skipping insertion in model container [2023-11-21 21:04:34,327 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:04:34" (1/1) ... [2023-11-21 21:04:34,414 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 21:04:34,652 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_44cfc960-25df-4270-b485-45bc0f8c2ec0/sv-benchmarks/c/pthread-wmm/mix008_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2023-11-21 21:04:34,961 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:04:34,982 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 21:04:35,002 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_44cfc960-25df-4270-b485-45bc0f8c2ec0/sv-benchmarks/c/pthread-wmm/mix008_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2023-11-21 21:04:35,076 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:04:35,147 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:04:35,147 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:04:35,158 INFO L206 MainTranslator]: Completed translation [2023-11-21 21:04:35,159 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:35 WrapperNode [2023-11-21 21:04:35,160 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 21:04:35,162 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 21:04:35,162 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 21:04:35,163 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 21:04:35,174 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:35" (1/1) ... [2023-11-21 21:04:35,225 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:35" (1/1) ... [2023-11-21 21:04:35,297 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 144 [2023-11-21 21:04:35,297 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 21:04:35,298 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 21:04:35,299 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 21:04:35,299 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 21:04:35,314 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:35" (1/1) ... [2023-11-21 21:04:35,315 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:35" (1/1) ... [2023-11-21 21:04:35,332 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:35" (1/1) ... [2023-11-21 21:04:35,373 INFO L187 HeapSplitter]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1] [2023-11-21 21:04:35,374 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:35" (1/1) ... [2023-11-21 21:04:35,374 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:35" (1/1) ... [2023-11-21 21:04:35,386 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:35" (1/1) ... [2023-11-21 21:04:35,400 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:35" (1/1) ... [2023-11-21 21:04:35,403 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:35" (1/1) ... [2023-11-21 21:04:35,405 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:35" (1/1) ... [2023-11-21 21:04:35,410 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 21:04:35,411 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 21:04:35,411 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 21:04:35,411 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 21:04:35,425 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:35" (1/1) ... [2023-11-21 21:04:35,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:04:35,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44cfc960-25df-4270-b485-45bc0f8c2ec0/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:04:35,465 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44cfc960-25df-4270-b485-45bc0f8c2ec0/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 21:04:35,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44cfc960-25df-4270-b485-45bc0f8c2ec0/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 21:04:35,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-21 21:04:35,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-21 21:04:35,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-21 21:04:35,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-21 21:04:35,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-21 21:04:35,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 21:04:35,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 21:04:35,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 21:04:35,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 21:04:35,532 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-21 21:04:35,532 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-21 21:04:35,532 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-21 21:04:35,532 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-21 21:04:35,532 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-21 21:04:35,533 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-21 21:04:35,533 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-21 21:04:35,533 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-21 21:04:35,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 21:04:35,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 21:04:35,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-21 21:04:35,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-21 21:04:35,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-21 21:04:35,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 21:04:35,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 21:04:35,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 21:04:35,537 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 21:04:35,783 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 21:04:35,787 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 21:04:36,307 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 21:04:36,639 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 21:04:36,641 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 21:04:36,643 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:04:36 BoogieIcfgContainer [2023-11-21 21:04:36,644 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 21:04:36,647 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 21:04:36,648 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 21:04:36,653 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 21:04:36,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:04:34" (1/3) ... [2023-11-21 21:04:36,655 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@122dce65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:04:36, skipping insertion in model container [2023-11-21 21:04:36,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:35" (2/3) ... [2023-11-21 21:04:36,657 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@122dce65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:04:36, skipping insertion in model container [2023-11-21 21:04:36,658 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:04:36" (3/3) ... [2023-11-21 21:04:36,659 INFO L112 eAbstractionObserver]: Analyzing ICFG mix008_power.oepc_pso.oepc_rmo.oepc.i [2023-11-21 21:04:36,673 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-21 21:04:36,687 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 21:04:36,688 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-21 21:04:36,688 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 21:04:36,778 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 21:04:36,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 50 transitions, 116 flow [2023-11-21 21:04:36,874 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2023-11-21 21:04:36,875 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 21:04:36,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 95 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-11-21 21:04:36,882 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 50 transitions, 116 flow [2023-11-21 21:04:36,887 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 46 transitions, 104 flow [2023-11-21 21:04:36,901 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 21:04:36,921 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;@63bf6ad5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 21:04:36,921 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-21 21:04:36,927 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 21:04:36,928 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-21 21:04:36,928 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 21:04:36,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:04:36,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-21 21:04:36,929 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 21:04:36,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:04:36,974 INFO L85 PathProgramCache]: Analyzing trace with hash 12274905, now seen corresponding path program 1 times [2023-11-21 21:04:36,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:04:36,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576901365] [2023-11-21 21:04:36,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:04:36,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:04:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:37,527 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 21:04:37,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:04:37,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576901365] [2023-11-21 21:04:37,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576901365] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:04:37,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:04:37,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 21:04:37,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460309688] [2023-11-21 21:04:37,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:04:37,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:04:37,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:04:37,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:04:37,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:04:37,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2023-11-21 21:04:37,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 21:04:37,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:04:37,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2023-11-21 21:04:37,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:04:38,759 INFO L124 PetriNetUnfolderBase]: 2495/3960 cut-off events. [2023-11-21 21:04:38,760 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-11-21 21:04:38,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7536 conditions, 3960 events. 2495/3960 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 24681 event pairs, 1647 based on Foata normal form. 135/4029 useless extension candidates. Maximal degree in co-relation 7524. Up to 2779 conditions per place. [2023-11-21 21:04:38,803 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 37 selfloop transitions, 2 changer transitions 2/62 dead transitions. [2023-11-21 21:04:38,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 62 transitions, 227 flow [2023-11-21 21:04:38,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:04:38,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 21:04:38,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2023-11-21 21:04:38,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7933333333333333 [2023-11-21 21:04:38,818 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 119 transitions. [2023-11-21 21:04:38,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 119 transitions. [2023-11-21 21:04:38,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:04:38,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 119 transitions. [2023-11-21 21:04:38,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 21:04:38,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states 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 21:04:38,831 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states 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 21:04:38,833 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 119 transitions. [2023-11-21 21:04:38,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 62 transitions, 227 flow [2023-11-21 21:04:38,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 62 transitions, 220 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-21 21:04:38,845 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2023-11-21 21:04:38,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2023-11-21 21:04:38,851 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2023-11-21 21:04:38,851 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2023-11-21 21:04:38,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 21:04:38,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:04:38,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:04:38,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 21:04:38,853 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 21:04:38,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:04:38,853 INFO L85 PathProgramCache]: Analyzing trace with hash -164153370, now seen corresponding path program 1 times [2023-11-21 21:04:38,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:04:38,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187056407] [2023-11-21 21:04:38,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:04:38,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:04:38,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:39,228 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 21:04:39,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:04:39,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187056407] [2023-11-21 21:04:39,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187056407] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:04:39,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:04:39,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 21:04:39,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534174206] [2023-11-21 21:04:39,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:04:39,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 21:04:39,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:04:39,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 21:04:39,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:04:39,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2023-11-21 21:04:39,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 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 21:04:39,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:04:39,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2023-11-21 21:04:39,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:04:49,005 INFO L124 PetriNetUnfolderBase]: 46399/65823 cut-off events. [2023-11-21 21:04:49,005 INFO L125 PetriNetUnfolderBase]: For 2705/2705 co-relation queries the response was YES. [2023-11-21 21:04:49,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131060 conditions, 65823 events. 46399/65823 cut-off events. For 2705/2705 co-relation queries the response was YES. Maximal size of possible extension queue 2670. Compared 473721 event pairs, 10917 based on Foata normal form. 0/64273 useless extension candidates. Maximal degree in co-relation 131050. Up to 24355 conditions per place. [2023-11-21 21:04:49,359 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 48 selfloop transitions, 9 changer transitions 109/177 dead transitions. [2023-11-21 21:04:49,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 177 transitions, 716 flow [2023-11-21 21:04:49,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 21:04:49,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-21 21:04:49,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 303 transitions. [2023-11-21 21:04:49,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6733333333333333 [2023-11-21 21:04:49,373 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 303 transitions. [2023-11-21 21:04:49,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 303 transitions. [2023-11-21 21:04:49,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:04:49,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 303 transitions. [2023-11-21 21:04:49,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.666666666666664) internal successors, (303), 9 states have internal predecessors, (303), 0 states have call successors, (0), 0 states 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 21:04:49,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 0 states have call successors, (0), 0 states 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 21:04:49,385 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 0 states have call successors, (0), 0 states 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 21:04:49,386 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 9 states and 303 transitions. [2023-11-21 21:04:49,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 177 transitions, 716 flow [2023-11-21 21:04:49,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 177 transitions, 698 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 21:04:49,399 INFO L231 Difference]: Finished difference. Result has 68 places, 50 transitions, 218 flow [2023-11-21 21:04:49,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=218, PETRI_PLACES=68, PETRI_TRANSITIONS=50} [2023-11-21 21:04:49,402 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2023-11-21 21:04:49,403 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 50 transitions, 218 flow [2023-11-21 21:04:49,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 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 21:04:49,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:04:49,403 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 21:04:49,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 21:04:49,404 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 21:04:49,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:04:49,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1522710791, now seen corresponding path program 1 times [2023-11-21 21:04:49,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:04:49,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388879255] [2023-11-21 21:04:49,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:04:49,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:04:49,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:49,737 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 21:04:49,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:04:49,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388879255] [2023-11-21 21:04:49,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388879255] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:04:49,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:04:49,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 21:04:49,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103001830] [2023-11-21 21:04:49,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:04:49,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 21:04:49,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:04:49,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 21:04:49,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-21 21:04:49,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2023-11-21 21:04:49,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 50 transitions, 218 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 21:04:49,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:04:49,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2023-11-21 21:04:49,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:04:56,965 INFO L124 PetriNetUnfolderBase]: 35754/51713 cut-off events. [2023-11-21 21:04:56,965 INFO L125 PetriNetUnfolderBase]: For 79419/79636 co-relation queries the response was YES. [2023-11-21 21:04:57,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159294 conditions, 51713 events. 35754/51713 cut-off events. For 79419/79636 co-relation queries the response was YES. Maximal size of possible extension queue 2143. Compared 373294 event pairs, 5722 based on Foata normal form. 1347/53001 useless extension candidates. Maximal degree in co-relation 159276. Up to 22876 conditions per place. [2023-11-21 21:04:57,537 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 66 selfloop transitions, 13 changer transitions 104/194 dead transitions. [2023-11-21 21:04:57,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 194 transitions, 1292 flow [2023-11-21 21:04:57,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 21:04:57,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-21 21:04:57,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 320 transitions. [2023-11-21 21:04:57,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.64 [2023-11-21 21:04:57,541 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 320 transitions. [2023-11-21 21:04:57,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 320 transitions. [2023-11-21 21:04:57,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:04:57,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 320 transitions. [2023-11-21 21:04:57,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.0) internal successors, (320), 10 states have internal predecessors, (320), 0 states have call successors, (0), 0 states 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 21:04:57,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 50.0) internal successors, (550), 11 states have internal predecessors, (550), 0 states have call successors, (0), 0 states 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 21:04:57,546 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 50.0) internal successors, (550), 11 states have internal predecessors, (550), 0 states have call successors, (0), 0 states 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 21:04:57,546 INFO L175 Difference]: Start difference. First operand has 68 places, 50 transitions, 218 flow. Second operand 10 states and 320 transitions. [2023-11-21 21:04:57,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 194 transitions, 1292 flow [2023-11-21 21:04:58,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 194 transitions, 1126 flow, removed 40 selfloop flow, removed 4 redundant places. [2023-11-21 21:04:58,248 INFO L231 Difference]: Finished difference. Result has 75 places, 58 transitions, 326 flow [2023-11-21 21:04:58,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=326, PETRI_PLACES=75, PETRI_TRANSITIONS=58} [2023-11-21 21:04:58,249 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 17 predicate places. [2023-11-21 21:04:58,249 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 58 transitions, 326 flow [2023-11-21 21:04:58,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 21:04:58,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:04:58,250 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 21:04:58,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 21:04:58,250 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 21:04:58,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:04:58,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1700026823, now seen corresponding path program 1 times [2023-11-21 21:04:58,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:04:58,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498336553] [2023-11-21 21:04:58,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:04:58,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:04:58,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:04:58,491 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 21:04:58,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:04:58,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498336553] [2023-11-21 21:04:58,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498336553] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:04:58,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:04:58,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 21:04:58,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172968378] [2023-11-21 21:04:58,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:04:58,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 21:04:58,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:04:58,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 21:04:58,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-21 21:04:58,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2023-11-21 21:04:58,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 58 transitions, 326 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 21:04:58,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:04:58,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2023-11-21 21:04:58,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:05:05,281 INFO L124 PetriNetUnfolderBase]: 33518/48221 cut-off events. [2023-11-21 21:05:05,282 INFO L125 PetriNetUnfolderBase]: For 135449/135629 co-relation queries the response was YES. [2023-11-21 21:05:05,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162511 conditions, 48221 events. 33518/48221 cut-off events. For 135449/135629 co-relation queries the response was YES. Maximal size of possible extension queue 1946. Compared 341620 event pairs, 7115 based on Foata normal form. 1141/49322 useless extension candidates. Maximal degree in co-relation 162486. Up to 21763 conditions per place. [2023-11-21 21:05:05,529 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 71 selfloop transitions, 20 changer transitions 90/192 dead transitions. [2023-11-21 21:05:05,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 192 transitions, 1354 flow [2023-11-21 21:05:05,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 21:05:05,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-21 21:05:05,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 321 transitions. [2023-11-21 21:05:05,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.642 [2023-11-21 21:05:05,532 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 321 transitions. [2023-11-21 21:05:05,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 321 transitions. [2023-11-21 21:05:05,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:05:05,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 321 transitions. [2023-11-21 21:05:05,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.1) internal successors, (321), 10 states have internal predecessors, (321), 0 states have call successors, (0), 0 states 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 21:05:05,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 50.0) internal successors, (550), 11 states have internal predecessors, (550), 0 states have call successors, (0), 0 states 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 21:05:05,536 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 50.0) internal successors, (550), 11 states have internal predecessors, (550), 0 states have call successors, (0), 0 states 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 21:05:05,537 INFO L175 Difference]: Start difference. First operand has 75 places, 58 transitions, 326 flow. Second operand 10 states and 321 transitions. [2023-11-21 21:05:05,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 192 transitions, 1354 flow [2023-11-21 21:05:06,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 192 transitions, 1326 flow, removed 14 selfloop flow, removed 0 redundant places. [2023-11-21 21:05:06,395 INFO L231 Difference]: Finished difference. Result has 86 places, 65 transitions, 469 flow [2023-11-21 21:05:06,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=469, PETRI_PLACES=86, PETRI_TRANSITIONS=65} [2023-11-21 21:05:06,396 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 28 predicate places. [2023-11-21 21:05:06,396 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 65 transitions, 469 flow [2023-11-21 21:05:06,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 21:05:06,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:05:06,397 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] [2023-11-21 21:05:06,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 21:05:06,397 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 21:05:06,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:05:06,398 INFO L85 PathProgramCache]: Analyzing trace with hash -597604280, now seen corresponding path program 1 times [2023-11-21 21:05:06,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:05:06,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567032145] [2023-11-21 21:05:06,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:05:06,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:05:06,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:06,634 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 21:05:06,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:05:06,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567032145] [2023-11-21 21:05:06,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567032145] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:05:06,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:05:06,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 21:05:06,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356756116] [2023-11-21 21:05:06,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:05:06,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 21:05:06,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:05:06,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 21:05:06,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:05:06,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 50 [2023-11-21 21:05:06,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 65 transitions, 469 flow. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 21:05:06,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:05:06,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 50 [2023-11-21 21:05:06,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:05:12,406 INFO L124 PetriNetUnfolderBase]: 22024/34853 cut-off events. [2023-11-21 21:05:12,407 INFO L125 PetriNetUnfolderBase]: For 110102/114791 co-relation queries the response was YES. [2023-11-21 21:05:12,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111405 conditions, 34853 events. 22024/34853 cut-off events. For 110102/114791 co-relation queries the response was YES. Maximal size of possible extension queue 1666. Compared 287739 event pairs, 6067 based on Foata normal form. 1402/35256 useless extension candidates. Maximal degree in co-relation 111370. Up to 20143 conditions per place. [2023-11-21 21:05:12,679 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 35 selfloop transitions, 5 changer transitions 43/118 dead transitions. [2023-11-21 21:05:12,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 118 transitions, 831 flow [2023-11-21 21:05:12,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 21:05:12,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-21 21:05:12,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 223 transitions. [2023-11-21 21:05:12,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6371428571428571 [2023-11-21 21:05:12,682 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 223 transitions. [2023-11-21 21:05:12,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 223 transitions. [2023-11-21 21:05:12,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:05:12,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 223 transitions. [2023-11-21 21:05:12,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 31.857142857142858) internal successors, (223), 7 states have internal predecessors, (223), 0 states have call successors, (0), 0 states 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 21:05:12,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 50.0) internal successors, (400), 8 states have internal predecessors, (400), 0 states have call successors, (0), 0 states 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 21:05:12,685 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 50.0) internal successors, (400), 8 states have internal predecessors, (400), 0 states have call successors, (0), 0 states 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 21:05:12,685 INFO L175 Difference]: Start difference. First operand has 86 places, 65 transitions, 469 flow. Second operand 7 states and 223 transitions. [2023-11-21 21:05:12,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 118 transitions, 831 flow [2023-11-21 21:05:13,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 118 transitions, 771 flow, removed 30 selfloop flow, removed 10 redundant places. [2023-11-21 21:05:13,912 INFO L231 Difference]: Finished difference. Result has 81 places, 65 transitions, 446 flow [2023-11-21 21:05:13,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=446, PETRI_PLACES=81, PETRI_TRANSITIONS=65} [2023-11-21 21:05:13,913 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 23 predicate places. [2023-11-21 21:05:13,913 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 65 transitions, 446 flow [2023-11-21 21:05:13,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 21:05:13,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:05:13,914 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 21:05:13,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 21:05:13,914 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 21:05:13,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:05:13,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1331621965, now seen corresponding path program 1 times [2023-11-21 21:05:13,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:05:13,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082388969] [2023-11-21 21:05:13,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:05:13,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:05:13,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:14,089 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 21:05:14,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:05:14,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082388969] [2023-11-21 21:05:14,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082388969] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:05:14,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:05:14,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 21:05:14,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420637323] [2023-11-21 21:05:14,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:05:14,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 21:05:14,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:05:14,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 21:05:14,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:05:14,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 50 [2023-11-21 21:05:14,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 65 transitions, 446 flow. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 21:05:14,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:05:14,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 50 [2023-11-21 21:05:14,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:05:18,838 INFO L124 PetriNetUnfolderBase]: 19263/30841 cut-off events. [2023-11-21 21:05:18,838 INFO L125 PetriNetUnfolderBase]: For 76471/78324 co-relation queries the response was YES. [2023-11-21 21:05:18,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96193 conditions, 30841 events. 19263/30841 cut-off events. For 76471/78324 co-relation queries the response was YES. Maximal size of possible extension queue 1359. Compared 252305 event pairs, 4758 based on Foata normal form. 1273/31502 useless extension candidates. Maximal degree in co-relation 96161. Up to 16170 conditions per place. [2023-11-21 21:05:19,073 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 39 selfloop transitions, 3 changer transitions 47/126 dead transitions. [2023-11-21 21:05:19,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 126 transitions, 881 flow [2023-11-21 21:05:19,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 21:05:19,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-21 21:05:19,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 228 transitions. [2023-11-21 21:05:19,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6514285714285715 [2023-11-21 21:05:19,075 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 228 transitions. [2023-11-21 21:05:19,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 228 transitions. [2023-11-21 21:05:19,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:05:19,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 228 transitions. [2023-11-21 21:05:19,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 32.57142857142857) internal successors, (228), 7 states have internal predecessors, (228), 0 states have call successors, (0), 0 states 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 21:05:19,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 50.0) internal successors, (400), 8 states have internal predecessors, (400), 0 states have call successors, (0), 0 states 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 21:05:19,078 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 50.0) internal successors, (400), 8 states have internal predecessors, (400), 0 states have call successors, (0), 0 states 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 21:05:19,078 INFO L175 Difference]: Start difference. First operand has 81 places, 65 transitions, 446 flow. Second operand 7 states and 228 transitions. [2023-11-21 21:05:19,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 126 transitions, 881 flow [2023-11-21 21:05:19,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 126 transitions, 849 flow, removed 11 selfloop flow, removed 6 redundant places. [2023-11-21 21:05:19,181 INFO L231 Difference]: Finished difference. Result has 82 places, 65 transitions, 441 flow [2023-11-21 21:05:19,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=441, PETRI_PLACES=82, PETRI_TRANSITIONS=65} [2023-11-21 21:05:19,183 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 24 predicate places. [2023-11-21 21:05:19,183 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 65 transitions, 441 flow [2023-11-21 21:05:19,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 21:05:19,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:05:19,184 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] [2023-11-21 21:05:19,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 21:05:19,184 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 21:05:19,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:05:19,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1902870306, now seen corresponding path program 1 times [2023-11-21 21:05:19,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:05:19,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483723547] [2023-11-21 21:05:19,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:05:19,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:05:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:05:19,327 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 21:05:19,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:05:19,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483723547] [2023-11-21 21:05:19,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483723547] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:05:19,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:05:19,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:05:19,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767190930] [2023-11-21 21:05:19,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:05:19,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 21:05:19,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:05:19,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 21:05:19,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 21:05:19,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2023-11-21 21:05:19,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 65 transitions, 441 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 21:05:19,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:05:19,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2023-11-21 21:05:19,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand