./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix013.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_173f603e-9f05-497a-93e1-7dea875f352d/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173f603e-9f05-497a-93e1-7dea875f352d/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173f603e-9f05-497a-93e1-7dea875f352d/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173f603e-9f05-497a-93e1-7dea875f352d/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix013.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173f603e-9f05-497a-93e1-7dea875f352d/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173f603e-9f05-497a-93e1-7dea875f352d/bin/uautomizer-verify-zZY32mL2XJ --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 39bd8ca48891731a487992488872bfabe93c299f5e64a0d2d763ed7464a4fc31 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:43:22,877 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:43:23,002 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173f603e-9f05-497a-93e1-7dea875f352d/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-23 22:43:23,014 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:43:23,015 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:43:23,056 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:43:23,058 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:43:23,059 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:43:23,060 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 22:43:23,069 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 22:43:23,069 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:43:23,071 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:43:23,072 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:43:23,074 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:43:23,074 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:43:23,075 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:43:23,075 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 22:43:23,076 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:43:23,076 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:43:23,077 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:43:23,077 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:43:23,078 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 22:43:23,078 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:43:23,079 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 22:43:23,079 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:43:23,080 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:43:23,080 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:43:23,081 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:43:23,082 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:43:23,082 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:43:23,090 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:43:23,091 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:43:23,091 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:43:23,091 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:43:23,092 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 22:43:23,092 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:43:23,093 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:43:23,093 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:43:23,093 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:43:23,093 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 22:43:23,094 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:43:23,094 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:43:23,094 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_173f603e-9f05-497a-93e1-7dea875f352d/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173f603e-9f05-497a-93e1-7dea875f352d/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39bd8ca48891731a487992488872bfabe93c299f5e64a0d2d763ed7464a4fc31 [2023-11-23 22:43:23,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:43:23,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:43:23,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:43:23,469 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:43:23,469 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:43:23,471 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173f603e-9f05-497a-93e1-7dea875f352d/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/pthread-wmm/mix013.oepc.i [2023-11-23 22:43:26,583 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:43:26,935 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:43:26,936 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173f603e-9f05-497a-93e1-7dea875f352d/sv-benchmarks/c/pthread-wmm/mix013.oepc.i [2023-11-23 22:43:26,963 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173f603e-9f05-497a-93e1-7dea875f352d/bin/uautomizer-verify-zZY32mL2XJ/data/d256e0951/2dd3d8e5910d436cbc40236752b059d7/FLAGb7080f2f4 [2023-11-23 22:43:26,980 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173f603e-9f05-497a-93e1-7dea875f352d/bin/uautomizer-verify-zZY32mL2XJ/data/d256e0951/2dd3d8e5910d436cbc40236752b059d7 [2023-11-23 22:43:26,983 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:43:26,987 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:43:26,989 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:43:26,992 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:43:26,998 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:43:27,000 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:43:26" (1/1) ... [2023-11-23 22:43:27,001 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49ac4ee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:27, skipping insertion in model container [2023-11-23 22:43:27,001 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:43:26" (1/1) ... [2023-11-23 22:43:27,080 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:43:27,263 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_173f603e-9f05-497a-93e1-7dea875f352d/sv-benchmarks/c/pthread-wmm/mix013.oepc.i[945,958] [2023-11-23 22:43:27,630 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:43:27,642 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:43:27,658 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_173f603e-9f05-497a-93e1-7dea875f352d/sv-benchmarks/c/pthread-wmm/mix013.oepc.i[945,958] [2023-11-23 22:43:27,760 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:43:27,816 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:43:27,817 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:43:27,825 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:43:27,826 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:27 WrapperNode [2023-11-23 22:43:27,827 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:43:27,828 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:43:27,828 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:43:27,829 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:43:27,838 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:27" (1/1) ... [2023-11-23 22:43:27,883 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:27" (1/1) ... [2023-11-23 22:43:27,923 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 146 [2023-11-23 22:43:27,924 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:43:27,925 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:43:27,925 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:43:27,925 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:43:27,937 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:27" (1/1) ... [2023-11-23 22:43:27,938 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:27" (1/1) ... [2023-11-23 22:43:27,942 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:27" (1/1) ... [2023-11-23 22:43:27,975 INFO L189 HeapSplitter]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1] [2023-11-23 22:43:27,982 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:27" (1/1) ... [2023-11-23 22:43:27,983 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:27" (1/1) ... [2023-11-23 22:43:27,998 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:27" (1/1) ... [2023-11-23 22:43:28,006 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:27" (1/1) ... [2023-11-23 22:43:28,012 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:27" (1/1) ... [2023-11-23 22:43:28,021 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:27" (1/1) ... [2023-11-23 22:43:28,026 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:43:28,031 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:43:28,032 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:43:28,032 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:43:28,033 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:27" (1/1) ... [2023-11-23 22:43:28,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:43:28,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173f603e-9f05-497a-93e1-7dea875f352d/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:43:28,074 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173f603e-9f05-497a-93e1-7dea875f352d/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:43:28,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173f603e-9f05-497a-93e1-7dea875f352d/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:43:28,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 22:43:28,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 22:43:28,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 22:43:28,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 22:43:28,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 22:43:28,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 22:43:28,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:43:28,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 22:43:28,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 22:43:28,126 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-23 22:43:28,126 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-23 22:43:28,126 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-23 22:43:28,126 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-23 22:43:28,127 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-23 22:43:28,127 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-23 22:43:28,127 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-23 22:43:28,127 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-23 22:43:28,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 22:43:28,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 22:43:28,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 22:43:28,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 22:43:28,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 22:43:28,129 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 22:43:28,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:43:28,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:43:28,132 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 22:43:28,334 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:43:28,337 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:43:28,745 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:43:29,065 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:43:29,065 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 22:43:29,066 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:43:29 BoogieIcfgContainer [2023-11-23 22:43:29,066 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:43:29,068 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:43:29,068 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:43:29,071 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:43:29,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:43:26" (1/3) ... [2023-11-23 22:43:29,073 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47a751d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:43:29, skipping insertion in model container [2023-11-23 22:43:29,073 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:27" (2/3) ... [2023-11-23 22:43:29,075 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47a751d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:43:29, skipping insertion in model container [2023-11-23 22:43:29,075 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:43:29" (3/3) ... [2023-11-23 22:43:29,076 INFO L112 eAbstractionObserver]: Analyzing ICFG mix013.oepc.i [2023-11-23 22:43:29,086 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 22:43:29,097 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:43:29,097 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-23 22:43:29,097 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 22:43:29,171 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-23 22:43:29,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 50 transitions, 116 flow [2023-11-23 22:43:29,241 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2023-11-23 22:43:29,241 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 22:43:29,249 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 4. Compared 99 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. [2023-11-23 22:43:29,249 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 50 transitions, 116 flow [2023-11-23 22:43:29,259 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 46 transitions, 104 flow [2023-11-23 22:43:29,279 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:43:29,288 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;@239b78f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:43:29,289 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-23 22:43:29,298 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 22:43:29,298 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-23 22:43:29,298 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 22:43:29,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:43:29,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-23 22:43:29,300 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-23 22:43:29,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:43:29,307 INFO L85 PathProgramCache]: Analyzing trace with hash 12487414, now seen corresponding path program 1 times [2023-11-23 22:43:29,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:43:29,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290990904] [2023-11-23 22:43:29,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:43:29,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:43:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:43:29,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:43:29,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:43:29,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290990904] [2023-11-23 22:43:29,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290990904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:43:29,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:43:29,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 22:43:29,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328691377] [2023-11-23 22:43:29,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:43:29,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:43:29,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:43:29,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:43:29,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:43:29,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2023-11-23 22:43:29,944 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) [2023-11-23 22:43:29,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:43:29,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2023-11-23 22:43:29,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:43:31,357 INFO L124 PetriNetUnfolderBase]: 2495/3958 cut-off events. [2023-11-23 22:43:31,357 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-11-23 22:43:31,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7534 conditions, 3958 events. 2495/3958 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 25161 event pairs, 1647 based on Foata normal form. 135/4025 useless extension candidates. Maximal degree in co-relation 7522. Up to 2779 conditions per place. [2023-11-23 22:43:31,437 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 37 selfloop transitions, 2 changer transitions 2/62 dead transitions. [2023-11-23 22:43:31,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 62 transitions, 227 flow [2023-11-23 22:43:31,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:43:31,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 22:43:31,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2023-11-23 22:43:31,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7933333333333333 [2023-11-23 22:43:31,451 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 119 transitions. [2023-11-23 22:43:31,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 119 transitions. [2023-11-23 22:43:31,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:43:31,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 119 transitions. [2023-11-23 22:43:31,460 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) [2023-11-23 22:43:31,465 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) [2023-11-23 22:43:31,466 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) [2023-11-23 22:43:31,468 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 119 transitions. [2023-11-23 22:43:31,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 62 transitions, 227 flow [2023-11-23 22:43:31,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 62 transitions, 220 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-23 22:43:31,482 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2023-11-23 22:43:31,484 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} [2023-11-23 22:43:31,488 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2023-11-23 22:43:31,489 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2023-11-23 22:43:31,489 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) [2023-11-23 22:43:31,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:43:31,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:43:31,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 22:43:31,490 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)] === [2023-11-23 22:43:31,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:43:31,492 INFO L85 PathProgramCache]: Analyzing trace with hash -2031458290, now seen corresponding path program 1 times [2023-11-23 22:43:31,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:43:31,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860316811] [2023-11-23 22:43:31,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:43:31,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:43:31,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:43:32,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:43:32,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:43:32,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860316811] [2023-11-23 22:43:32,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860316811] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:43:32,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:43:32,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 22:43:32,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987981365] [2023-11-23 22:43:32,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:43:32,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:43:32,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:43:32,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:43:32,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:43:32,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2023-11-23 22:43:32,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:32,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:43:32,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2023-11-23 22:43:32,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:43:36,631 INFO L124 PetriNetUnfolderBase]: 16854/23936 cut-off events. [2023-11-23 22:43:36,632 INFO L125 PetriNetUnfolderBase]: For 1148/1148 co-relation queries the response was YES. [2023-11-23 22:43:36,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47957 conditions, 23936 events. 16854/23936 cut-off events. For 1148/1148 co-relation queries the response was YES. Maximal size of possible extension queue 1155. Compared 158910 event pairs, 8364 based on Foata normal form. 0/23417 useless extension candidates. Maximal degree in co-relation 47947. Up to 14786 conditions per place. [2023-11-23 22:43:36,841 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 38 selfloop transitions, 5 changer transitions 61/117 dead transitions. [2023-11-23 22:43:36,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 117 transitions, 472 flow [2023-11-23 22:43:36,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 22:43:36,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-23 22:43:36,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 242 transitions. [2023-11-23 22:43:36,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.605 [2023-11-23 22:43:36,854 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 242 transitions. [2023-11-23 22:43:36,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 242 transitions. [2023-11-23 22:43:36,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:43:36,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 242 transitions. [2023-11-23 22:43:36,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 30.25) internal successors, (242), 8 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:36,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:36,865 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:36,866 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 8 states and 242 transitions. [2023-11-23 22:43:36,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 117 transitions, 472 flow [2023-11-23 22:43:36,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 117 transitions, 456 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 22:43:36,875 INFO L231 Difference]: Finished difference. Result has 64 places, 46 transitions, 149 flow [2023-11-23 22:43:36,876 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=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=149, PETRI_PLACES=64, PETRI_TRANSITIONS=46} [2023-11-23 22:43:36,877 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 6 predicate places. [2023-11-23 22:43:36,877 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 46 transitions, 149 flow [2023-11-23 22:43:36,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:36,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:43:36,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:43:36,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 22:43:36,879 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)] === [2023-11-23 22:43:36,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:43:36,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1347400197, now seen corresponding path program 1 times [2023-11-23 22:43:36,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:43:36,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275341193] [2023-11-23 22:43:36,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:43:36,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:43:36,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:43:37,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:43:37,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:43:37,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275341193] [2023-11-23 22:43:37,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275341193] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:43:37,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:43:37,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 22:43:37,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283700694] [2023-11-23 22:43:37,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:43:37,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:43:37,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:43:37,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:43:37,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:43:37,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2023-11-23 22:43:37,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 46 transitions, 149 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:37,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:43:37,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2023-11-23 22:43:37,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:43:40,223 INFO L124 PetriNetUnfolderBase]: 12761/18463 cut-off events. [2023-11-23 22:43:40,223 INFO L125 PetriNetUnfolderBase]: For 17971/17981 co-relation queries the response was YES. [2023-11-23 22:43:40,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49252 conditions, 18463 events. 12761/18463 cut-off events. For 17971/17981 co-relation queries the response was YES. Maximal size of possible extension queue 865. Compared 119759 event pairs, 2141 based on Foata normal form. 490/18852 useless extension candidates. Maximal degree in co-relation 49237. Up to 11481 conditions per place. [2023-11-23 22:43:40,374 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 44 selfloop transitions, 3 changer transitions 55/115 dead transitions. [2023-11-23 22:43:40,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 115 transitions, 603 flow [2023-11-23 22:43:40,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 22:43:40,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-23 22:43:40,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 219 transitions. [2023-11-23 22:43:40,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6257142857142857 [2023-11-23 22:43:40,378 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 219 transitions. [2023-11-23 22:43:40,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 219 transitions. [2023-11-23 22:43:40,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:43:40,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 219 transitions. [2023-11-23 22:43:40,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:40,382 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) [2023-11-23 22:43:40,382 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) [2023-11-23 22:43:40,383 INFO L175 Difference]: Start difference. First operand has 64 places, 46 transitions, 149 flow. Second operand 7 states and 219 transitions. [2023-11-23 22:43:40,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 115 transitions, 603 flow [2023-11-23 22:43:40,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 115 transitions, 590 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-23 22:43:40,767 INFO L231 Difference]: Finished difference. Result has 66 places, 46 transitions, 159 flow [2023-11-23 22:43:40,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=159, PETRI_PLACES=66, PETRI_TRANSITIONS=46} [2023-11-23 22:43:40,769 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 8 predicate places. [2023-11-23 22:43:40,770 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 46 transitions, 159 flow [2023-11-23 22:43:40,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:40,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:43:40,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:43:40,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 22:43:40,771 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)] === [2023-11-23 22:43:40,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:43:40,772 INFO L85 PathProgramCache]: Analyzing trace with hash -2082091911, now seen corresponding path program 1 times [2023-11-23 22:43:40,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:43:40,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654626599] [2023-11-23 22:43:40,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:43:40,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:43:40,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:43:41,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:43:41,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:43:41,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654626599] [2023-11-23 22:43:41,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654626599] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:43:41,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:43:41,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 22:43:41,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64555911] [2023-11-23 22:43:41,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:43:41,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:43:41,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:43:41,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:43:41,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:43:41,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 50 [2023-11-23 22:43:41,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 46 transitions, 159 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) [2023-11-23 22:43:41,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:43:41,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 50 [2023-11-23 22:43:41,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:43:42,857 INFO L124 PetriNetUnfolderBase]: 7524/11879 cut-off events. [2023-11-23 22:43:42,857 INFO L125 PetriNetUnfolderBase]: For 9639/9936 co-relation queries the response was YES. [2023-11-23 22:43:42,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29133 conditions, 11879 events. 7524/11879 cut-off events. For 9639/9936 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 85040 event pairs, 2265 based on Foata normal form. 320/11785 useless extension candidates. Maximal degree in co-relation 29114. Up to 6906 conditions per place. [2023-11-23 22:43:42,956 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 38 selfloop transitions, 3 changer transitions 41/102 dead transitions. [2023-11-23 22:43:42,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 102 transitions, 467 flow [2023-11-23 22:43:42,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 22:43:42,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-23 22:43:42,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 230 transitions. [2023-11-23 22:43:42,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2023-11-23 22:43:42,958 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 230 transitions. [2023-11-23 22:43:42,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 230 transitions. [2023-11-23 22:43:42,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:43:42,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 230 transitions. [2023-11-23 22:43:42,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 32.857142857142854) internal successors, (230), 7 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:42,961 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) [2023-11-23 22:43:42,962 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) [2023-11-23 22:43:42,962 INFO L175 Difference]: Start difference. First operand has 66 places, 46 transitions, 159 flow. Second operand 7 states and 230 transitions. [2023-11-23 22:43:42,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 102 transitions, 467 flow [2023-11-23 22:43:43,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 102 transitions, 445 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-11-23 22:43:43,291 INFO L231 Difference]: Finished difference. Result has 67 places, 46 transitions, 164 flow [2023-11-23 22:43:43,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=164, PETRI_PLACES=67, PETRI_TRANSITIONS=46} [2023-11-23 22:43:43,304 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 9 predicate places. [2023-11-23 22:43:43,304 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 46 transitions, 164 flow [2023-11-23 22:43:43,305 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) [2023-11-23 22:43:43,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:43:43,305 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] [2023-11-23 22:43:43,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 22:43:43,306 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)] === [2023-11-23 22:43:43,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:43:43,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1611763899, now seen corresponding path program 1 times [2023-11-23 22:43:43,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:43:43,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933172407] [2023-11-23 22:43:43,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:43:43,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:43:43,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:43:43,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:43:43,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:43:43,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933172407] [2023-11-23 22:43:43,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933172407] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:43:43,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:43:43,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:43:43,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989296381] [2023-11-23 22:43:43,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:43:43,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:43:43,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:43:43,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:43:43,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:43:43,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2023-11-23 22:43:43,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 46 transitions, 164 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) [2023-11-23 22:43:43,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:43:43,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2023-11-23 22:43:43,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:43:46,139 INFO L124 PetriNetUnfolderBase]: 12832/19160 cut-off events. [2023-11-23 22:43:46,140 INFO L125 PetriNetUnfolderBase]: For 8554/8852 co-relation queries the response was YES. [2023-11-23 22:43:46,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43297 conditions, 19160 events. 12832/19160 cut-off events. For 8554/8852 co-relation queries the response was YES. Maximal size of possible extension queue 1069. Compared 133807 event pairs, 2303 based on Foata normal form. 685/19092 useless extension candidates. Maximal degree in co-relation 43277. Up to 9128 conditions per place. [2023-11-23 22:43:46,294 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 53 selfloop transitions, 6 changer transitions 0/78 dead transitions. [2023-11-23 22:43:46,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 78 transitions, 352 flow [2023-11-23 22:43:46,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:43:46,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 22:43:46,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2023-11-23 22:43:46,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.705 [2023-11-23 22:43:46,296 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 141 transitions. [2023-11-23 22:43:46,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 141 transitions. [2023-11-23 22:43:46,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:43:46,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 141 transitions. [2023-11-23 22:43:46,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:46,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:46,299 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:46,299 INFO L175 Difference]: Start difference. First operand has 67 places, 46 transitions, 164 flow. Second operand 4 states and 141 transitions. [2023-11-23 22:43:46,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 78 transitions, 352 flow [2023-11-23 22:43:46,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 78 transitions, 338 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-11-23 22:43:46,870 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 196 flow [2023-11-23 22:43:46,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=196, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2023-11-23 22:43:46,871 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 4 predicate places. [2023-11-23 22:43:46,871 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 196 flow [2023-11-23 22:43:46,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2023-11-23 22:43:46,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:43:46,872 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] [2023-11-23 22:43:46,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 22:43:46,872 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)] === [2023-11-23 22:43:46,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:43:46,873 INFO L85 PathProgramCache]: Analyzing trace with hash -671465006, now seen corresponding path program 1 times [2023-11-23 22:43:46,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:43:46,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493281641] [2023-11-23 22:43:46,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:43:46,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:43:46,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:43:47,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:43:47,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:43:47,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493281641] [2023-11-23 22:43:47,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493281641] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:43:47,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:43:47,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 22:43:47,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664247839] [2023-11-23 22:43:47,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:43:47,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:43:47,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:43:47,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:43:47,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:43:47,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2023-11-23 22:43:47,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 196 flow. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:47,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:43:47,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2023-11-23 22:43:47,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:43:48,994 INFO L124 PetriNetUnfolderBase]: 10884/16284 cut-off events. [2023-11-23 22:43:48,994 INFO L125 PetriNetUnfolderBase]: For 6210/6374 co-relation queries the response was YES. [2023-11-23 22:43:49,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39694 conditions, 16284 events. 10884/16284 cut-off events. For 6210/6374 co-relation queries the response was YES. Maximal size of possible extension queue 866. Compared 110133 event pairs, 1492 based on Foata normal form. 602/16226 useless extension candidates. Maximal degree in co-relation 39676. Up to 5576 conditions per place. [2023-11-23 22:43:49,104 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 69 selfloop transitions, 10 changer transitions 0/98 dead transitions. [2023-11-23 22:43:49,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 98 transitions, 477 flow [2023-11-23 22:43:49,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:43:49,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-23 22:43:49,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 181 transitions. [2023-11-23 22:43:49,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.724 [2023-11-23 22:43:49,107 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 181 transitions. [2023-11-23 22:43:49,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 181 transitions. [2023-11-23 22:43:49,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:43:49,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 181 transitions. [2023-11-23 22:43:49,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:49,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 50.0) internal successors, (300), 6 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:49,111 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 50.0) internal successors, (300), 6 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:49,111 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 196 flow. Second operand 5 states and 181 transitions. [2023-11-23 22:43:49,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 98 transitions, 477 flow [2023-11-23 22:43:49,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 98 transitions, 474 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 22:43:49,117 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 261 flow [2023-11-23 22:43:49,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=261, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2023-11-23 22:43:49,118 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 9 predicate places. [2023-11-23 22:43:49,119 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 261 flow [2023-11-23 22:43:49,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:49,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:43:49,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:43:49,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 22:43:49,120 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)] === [2023-11-23 22:43:49,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:43:49,121 INFO L85 PathProgramCache]: Analyzing trace with hash -122941350, now seen corresponding path program 1 times [2023-11-23 22:43:49,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:43:49,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125812259] [2023-11-23 22:43:49,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:43:49,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:43:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:43:49,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:43:49,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:43:49,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125812259] [2023-11-23 22:43:49,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125812259] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:43:49,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:43:49,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 22:43:49,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542239403] [2023-11-23 22:43:49,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:43:49,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:43:49,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:43:49,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:43:49,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:43:49,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2023-11-23 22:43:49,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 261 flow. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:49,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:43:49,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2023-11-23 22:43:49,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:43:51,578 INFO L124 PetriNetUnfolderBase]: 8800/12984 cut-off events. [2023-11-23 22:43:51,579 INFO L125 PetriNetUnfolderBase]: For 12658/12734 co-relation queries the response was YES. [2023-11-23 22:43:51,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35423 conditions, 12984 events. 8800/12984 cut-off events. For 12658/12734 co-relation queries the response was YES. Maximal size of possible extension queue 717. Compared 82679 event pairs, 1146 based on Foata normal form. 364/12751 useless extension candidates. Maximal degree in co-relation 35402. Up to 4412 conditions per place. [2023-11-23 22:43:51,662 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 83 selfloop transitions, 14 changer transitions 0/116 dead transitions. [2023-11-23 22:43:51,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 116 transitions, 624 flow [2023-11-23 22:43:51,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 22:43:51,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-23 22:43:51,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 219 transitions. [2023-11-23 22:43:51,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.73 [2023-11-23 22:43:51,665 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 219 transitions. [2023-11-23 22:43:51,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 219 transitions. [2023-11-23 22:43:51,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:43:51,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 219 transitions. [2023-11-23 22:43:51,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:51,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 50.0) internal successors, (350), 7 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:51,668 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 50.0) internal successors, (350), 7 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:51,668 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 261 flow. Second operand 6 states and 219 transitions. [2023-11-23 22:43:51,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 116 transitions, 624 flow [2023-11-23 22:43:51,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 116 transitions, 608 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-23 22:43:51,685 INFO L231 Difference]: Finished difference. Result has 72 places, 61 transitions, 331 flow [2023-11-23 22:43:51,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=331, PETRI_PLACES=72, PETRI_TRANSITIONS=61} [2023-11-23 22:43:51,686 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 14 predicate places. [2023-11-23 22:43:51,686 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 61 transitions, 331 flow [2023-11-23 22:43:51,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:51,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:43:51,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:43:51,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 22:43:51,687 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)] === [2023-11-23 22:43:51,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:43:51,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1889437754, now seen corresponding path program 1 times [2023-11-23 22:43:51,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:43:51,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813823319] [2023-11-23 22:43:51,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:43:51,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:43:51,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:43:52,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:43:52,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:43:52,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813823319] [2023-11-23 22:43:52,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813823319] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:43:52,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:43:52,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 22:43:52,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744013256] [2023-11-23 22:43:52,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:43:52,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 22:43:52,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:43:52,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 22:43:52,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-23 22:43:52,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2023-11-23 22:43:52,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 61 transitions, 331 flow. Second operand has 9 states, 9 states have (on average 24.11111111111111) internal successors, (217), 9 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:52,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:43:52,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2023-11-23 22:43:52,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:43:55,564 INFO L124 PetriNetUnfolderBase]: 10237/17543 cut-off events. [2023-11-23 22:43:55,564 INFO L125 PetriNetUnfolderBase]: For 22785/28615 co-relation queries the response was YES. [2023-11-23 22:43:55,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47903 conditions, 17543 events. 10237/17543 cut-off events. For 22785/28615 co-relation queries the response was YES. Maximal size of possible extension queue 1049. Compared 143621 event pairs, 3903 based on Foata normal form. 409/16289 useless extension candidates. Maximal degree in co-relation 47880. Up to 5463 conditions per place. [2023-11-23 22:43:55,715 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 84 selfloop transitions, 9 changer transitions 16/146 dead transitions. [2023-11-23 22:43:55,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 146 transitions, 825 flow [2023-11-23 22:43:55,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 22:43:55,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-23 22:43:55,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 286 transitions. [2023-11-23 22:43:55,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.715 [2023-11-23 22:43:55,719 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 286 transitions. [2023-11-23 22:43:55,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 286 transitions. [2023-11-23 22:43:55,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:43:55,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 286 transitions. [2023-11-23 22:43:55,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 35.75) internal successors, (286), 8 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:55,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:55,723 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:55,724 INFO L175 Difference]: Start difference. First operand has 72 places, 61 transitions, 331 flow. Second operand 8 states and 286 transitions. [2023-11-23 22:43:55,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 146 transitions, 825 flow [2023-11-23 22:43:55,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 146 transitions, 794 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-11-23 22:43:55,953 INFO L231 Difference]: Finished difference. Result has 81 places, 68 transitions, 362 flow [2023-11-23 22:43:55,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=362, PETRI_PLACES=81, PETRI_TRANSITIONS=68} [2023-11-23 22:43:55,954 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 23 predicate places. [2023-11-23 22:43:55,954 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 68 transitions, 362 flow [2023-11-23 22:43:55,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.11111111111111) internal successors, (217), 9 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:55,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:43:55,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:43:55,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 22:43:55,955 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-23 22:43:55,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:43:55,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1686148232, now seen corresponding path program 2 times [2023-11-23 22:43:55,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:43:55,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620734713] [2023-11-23 22:43:55,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:43:55,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:43:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:43:56,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:43:56,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:43:56,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620734713] [2023-11-23 22:43:56,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620734713] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:43:56,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:43:56,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 22:43:56,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668426654] [2023-11-23 22:43:56,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:43:56,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 22:43:56,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:43:56,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 22:43:56,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 22:43:56,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2023-11-23 22:43:56,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 68 transitions, 362 flow. Second operand has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:56,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:43:56,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2023-11-23 22:43:56,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:44:02,408 INFO L124 PetriNetUnfolderBase]: 28612/45271 cut-off events. [2023-11-23 22:44:02,409 INFO L125 PetriNetUnfolderBase]: For 69209/74456 co-relation queries the response was YES. [2023-11-23 22:44:02,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141072 conditions, 45271 events. 28612/45271 cut-off events. For 69209/74456 co-relation queries the response was YES. Maximal size of possible extension queue 2467. Compared 380573 event pairs, 10206 based on Foata normal form. 1299/42872 useless extension candidates. Maximal degree in co-relation 141044. Up to 18918 conditions per place. [2023-11-23 22:44:02,852 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 96 selfloop transitions, 11 changer transitions 32/166 dead transitions. [2023-11-23 22:44:02,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 166 transitions, 1071 flow [2023-11-23 22:44:02,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 22:44:02,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-23 22:44:02,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 245 transitions. [2023-11-23 22:44:02,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6125 [2023-11-23 22:44:02,854 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 245 transitions. [2023-11-23 22:44:02,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 245 transitions. [2023-11-23 22:44:02,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:44:02,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 245 transitions. [2023-11-23 22:44:02,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 30.625) internal successors, (245), 8 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) [2023-11-23 22:44:02,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:44:02,858 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:44:02,858 INFO L175 Difference]: Start difference. First operand has 81 places, 68 transitions, 362 flow. Second operand 8 states and 245 transitions. [2023-11-23 22:44:02,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 166 transitions, 1071 flow [2023-11-23 22:44:04,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 166 transitions, 1042 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-23 22:44:04,637 INFO L231 Difference]: Finished difference. Result has 86 places, 73 transitions, 410 flow [2023-11-23 22:44:04,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=410, PETRI_PLACES=86, PETRI_TRANSITIONS=73} [2023-11-23 22:44:04,638 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 28 predicate places. [2023-11-23 22:44:04,638 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 73 transitions, 410 flow [2023-11-23 22:44:04,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:44:04,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:44:04,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:44:04,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 22:44:04,640 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-23 22:44:04,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:44:04,640 INFO L85 PathProgramCache]: Analyzing trace with hash -122007174, now seen corresponding path program 3 times [2023-11-23 22:44:04,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:44:04,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381895768] [2023-11-23 22:44:04,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:44:04,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:44:04,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:44:05,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:44:05,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:44:05,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381895768] [2023-11-23 22:44:05,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381895768] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:44:05,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:44:05,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 22:44:05,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960767416] [2023-11-23 22:44:05,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:44:05,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 22:44:05,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:44:05,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 22:44:05,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-23 22:44:05,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2023-11-23 22:44:05,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 73 transitions, 410 flow. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:44:05,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:44:05,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2023-11-23 22:44:05,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:44:10,965 INFO L124 PetriNetUnfolderBase]: 30316/44154 cut-off events. [2023-11-23 22:44:10,965 INFO L125 PetriNetUnfolderBase]: For 69150/72679 co-relation queries the response was YES. [2023-11-23 22:44:11,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141470 conditions, 44154 events. 30316/44154 cut-off events. For 69150/72679 co-relation queries the response was YES. Maximal size of possible extension queue 2475. Compared 324622 event pairs, 2735 based on Foata normal form. 611/43282 useless extension candidates. Maximal degree in co-relation 141440. Up to 16820 conditions per place. [2023-11-23 22:44:11,223 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 84 selfloop transitions, 18 changer transitions 12/137 dead transitions. [2023-11-23 22:44:11,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 137 transitions, 862 flow [2023-11-23 22:44:11,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 22:44:11,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-23 22:44:11,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 235 transitions. [2023-11-23 22:44:11,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6714285714285714 [2023-11-23 22:44:11,226 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 235 transitions. [2023-11-23 22:44:11,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 235 transitions. [2023-11-23 22:44:11,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:44:11,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 235 transitions. [2023-11-23 22:44:11,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.57142857142857) internal successors, (235), 7 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:44:11,230 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) [2023-11-23 22:44:11,230 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) [2023-11-23 22:44:11,230 INFO L175 Difference]: Start difference. First operand has 86 places, 73 transitions, 410 flow. Second operand 7 states and 235 transitions. [2023-11-23 22:44:11,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 137 transitions, 862 flow [2023-11-23 22:44:13,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 137 transitions, 831 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-11-23 22:44:13,958 INFO L231 Difference]: Finished difference. Result has 87 places, 71 transitions, 426 flow [2023-11-23 22:44:13,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=426, PETRI_PLACES=87, PETRI_TRANSITIONS=71} [2023-11-23 22:44:13,959 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 29 predicate places. [2023-11-23 22:44:13,960 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 71 transitions, 426 flow [2023-11-23 22:44:13,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:44:13,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:44:13,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:44:13,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 22:44:13,961 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-23 22:44:13,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:44:13,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1009405450, now seen corresponding path program 1 times [2023-11-23 22:44:13,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:44:13,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129496049] [2023-11-23 22:44:13,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:44:13,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:44:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:44:14,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:44:14,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:44:14,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129496049] [2023-11-23 22:44:14,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129496049] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:44:14,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:44:14,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 22:44:14,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349212659] [2023-11-23 22:44:14,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:44:14,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:44:14,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:44:14,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:44:14,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:44:14,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2023-11-23 22:44:14,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 71 transitions, 426 flow. Second operand has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 6 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:44:14,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:44:14,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2023-11-23 22:44:14,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand