./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/test-easy11.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a 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_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-easy11.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU --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 d4ad0d0809306a534b821bfb65370b6441b48266d0d86b4699760a422c08b963 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 21:58:00,788 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 21:58:00,883 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 21:58:00,889 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 21:58:00,891 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 21:58:00,940 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 21:58:00,941 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 21:58:00,941 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 21:58:00,942 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 21:58:00,942 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 21:58:00,942 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 21:58:00,947 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 21:58:00,947 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 21:58:00,948 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 21:58:00,948 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 21:58:00,948 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 21:58:00,949 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 21:58:00,949 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 21:58:00,949 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 21:58:00,950 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 21:58:00,950 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 21:58:00,954 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 21:58:00,954 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 21:58:00,954 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 21:58:00,955 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 21:58:00,955 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 21:58:00,955 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 21:58:00,955 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 21:58:00,956 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 21:58:00,956 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 21:58:00,956 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 21:58:00,957 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 21:58:00,957 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:58:00,957 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 21:58:00,961 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 21:58:00,962 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 21:58:00,963 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 21:58:00,964 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 21:58:00,965 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 21:58:00,966 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 21:58:00,966 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 21:58:00,967 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 21:58:00,968 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_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4ad0d0809306a534b821bfb65370b6441b48266d0d86b4699760a422c08b963 [2024-10-31 21:58:01,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 21:58:01,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 21:58:01,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 21:58:01,314 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 21:58:01,315 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 21:58:01,316 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/weaver/test-easy11.wvr.c Unable to find full path for "g++" [2024-10-31 21:58:03,510 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 21:58:03,700 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 21:58:03,700 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ef7c1e-4901-45b5-863a-6aa501db759b/sv-benchmarks/c/weaver/test-easy11.wvr.c [2024-10-31 21:58:03,708 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU/data/f357ec2aa/5ed6304f528d4767a02955cc69e7b30d/FLAG0ad9ce987 [2024-10-31 21:58:03,722 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU/data/f357ec2aa/5ed6304f528d4767a02955cc69e7b30d [2024-10-31 21:58:03,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 21:58:03,727 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 21:58:03,728 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 21:58:03,729 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 21:58:03,736 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 21:58:03,737 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:58:03" (1/1) ... [2024-10-31 21:58:03,740 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@372cd5a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:03, skipping insertion in model container [2024-10-31 21:58:03,740 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:58:03" (1/1) ... [2024-10-31 21:58:03,765 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 21:58:03,995 WARN L251 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_f6ef7c1e-4901-45b5-863a-6aa501db759b/sv-benchmarks/c/weaver/test-easy11.wvr.c[2031,2044] [2024-10-31 21:58:04,000 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:58:04,012 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 21:58:04,036 WARN L251 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_f6ef7c1e-4901-45b5-863a-6aa501db759b/sv-benchmarks/c/weaver/test-easy11.wvr.c[2031,2044] [2024-10-31 21:58:04,037 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:58:04,055 INFO L204 MainTranslator]: Completed translation [2024-10-31 21:58:04,055 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:04 WrapperNode [2024-10-31 21:58:04,055 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 21:58:04,057 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 21:58:04,057 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 21:58:04,057 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 21:58:04,065 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:04" (1/1) ... [2024-10-31 21:58:04,072 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:04" (1/1) ... [2024-10-31 21:58:04,098 INFO L138 Inliner]: procedures = 20, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 41 [2024-10-31 21:58:04,099 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 21:58:04,099 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 21:58:04,100 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 21:58:04,100 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 21:58:04,111 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:04" (1/1) ... [2024-10-31 21:58:04,111 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:04" (1/1) ... [2024-10-31 21:58:04,113 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:04" (1/1) ... [2024-10-31 21:58:04,128 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-31 21:58:04,128 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:04" (1/1) ... [2024-10-31 21:58:04,128 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:04" (1/1) ... [2024-10-31 21:58:04,132 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:04" (1/1) ... [2024-10-31 21:58:04,135 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:04" (1/1) ... [2024-10-31 21:58:04,137 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:04" (1/1) ... [2024-10-31 21:58:04,138 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:04" (1/1) ... [2024-10-31 21:58:04,140 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 21:58:04,141 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 21:58:04,141 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 21:58:04,141 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 21:58:04,142 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:04" (1/1) ... [2024-10-31 21:58:04,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:58:04,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:04,180 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:04,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 21:58:04,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 21:58:04,219 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-31 21:58:04,219 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-31 21:58:04,219 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-31 21:58:04,219 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-31 21:58:04,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 21:58:04,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 21:58:04,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 21:58:04,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 21:58:04,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 21:58:04,223 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 21:58:04,322 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 21:58:04,325 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 21:58:04,523 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 21:58:04,524 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 21:58:04,669 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 21:58:04,670 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-31 21:58:04,670 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:58:04 BoogieIcfgContainer [2024-10-31 21:58:04,670 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 21:58:04,673 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 21:58:04,673 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 21:58:04,678 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 21:58:04,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 09:58:03" (1/3) ... [2024-10-31 21:58:04,683 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77a3aca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:58:04, skipping insertion in model container [2024-10-31 21:58:04,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:04" (2/3) ... [2024-10-31 21:58:04,683 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77a3aca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:58:04, skipping insertion in model container [2024-10-31 21:58:04,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:58:04" (3/3) ... [2024-10-31 21:58:04,689 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2024-10-31 21:58:04,709 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 21:58:04,709 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 21:58:04,711 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 21:58:04,771 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-31 21:58:04,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 22 transitions, 58 flow [2024-10-31 21:58:04,849 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2024-10-31 21:58:04,849 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 21:58:04,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 20 events. 2/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2024-10-31 21:58:04,852 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 22 transitions, 58 flow [2024-10-31 21:58:04,856 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 19 transitions, 50 flow [2024-10-31 21:58:04,866 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 21:58:04,873 INFO L333 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, 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;@785a6347, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 21:58:04,873 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-10-31 21:58:04,886 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 21:58:04,886 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-10-31 21:58:04,886 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 21:58:04,886 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:04,887 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:04,888 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 21:58:04,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:04,894 INFO L85 PathProgramCache]: Analyzing trace with hash 787521427, now seen corresponding path program 1 times [2024-10-31 21:58:04,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:04,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60356165] [2024-10-31 21:58:04,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:04,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:05,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:05,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:05,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:05,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60356165] [2024-10-31 21:58:05,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60356165] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:05,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:05,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 21:58:05,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684615402] [2024-10-31 21:58:05,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:05,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 21:58:05,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:05,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 21:58:05,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-31 21:58:05,682 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-31 21:58:05,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 19 transitions, 50 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-10-31 21:58:05,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:05,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-31 21:58:05,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:06,180 INFO L124 PetriNetUnfolderBase]: 111/201 cut-off events. [2024-10-31 21:58:06,180 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-10-31 21:58:06,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 428 conditions, 201 events. 111/201 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 599 event pairs, 2 based on Foata normal form. 1/174 useless extension candidates. Maximal degree in co-relation 364. Up to 57 conditions per place. [2024-10-31 21:58:06,185 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 40 selfloop transitions, 10 changer transitions 10/61 dead transitions. [2024-10-31 21:58:06,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 61 transitions, 278 flow [2024-10-31 21:58:06,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 21:58:06,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 21:58:06,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-10-31 21:58:06,202 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-10-31 21:58:06,204 INFO L175 Difference]: Start difference. First operand has 24 places, 19 transitions, 50 flow. Second operand 9 states and 88 transitions. [2024-10-31 21:58:06,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 61 transitions, 278 flow [2024-10-31 21:58:06,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 61 transitions, 254 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-31 21:58:06,213 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 107 flow [2024-10-31 21:58:06,215 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=107, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-10-31 21:58:06,218 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 10 predicate places. [2024-10-31 21:58:06,219 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 107 flow [2024-10-31 21:58:06,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-10-31 21:58:06,219 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:06,219 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:06,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 21:58:06,220 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 21:58:06,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:06,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1106912063, now seen corresponding path program 2 times [2024-10-31 21:58:06,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:06,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932054456] [2024-10-31 21:58:06,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:06,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:06,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:06,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:06,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:06,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932054456] [2024-10-31 21:58:06,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932054456] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:06,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:06,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 21:58:06,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235332058] [2024-10-31 21:58:06,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:06,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 21:58:06,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:06,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 21:58:06,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-31 21:58:06,556 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-31 21:58:06,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 107 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-10-31 21:58:06,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:06,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-31 21:58:06,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:06,887 INFO L124 PetriNetUnfolderBase]: 114/208 cut-off events. [2024-10-31 21:58:06,887 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2024-10-31 21:58:06,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 588 conditions, 208 events. 114/208 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 609 event pairs, 15 based on Foata normal form. 1/198 useless extension candidates. Maximal degree in co-relation 575. Up to 115 conditions per place. [2024-10-31 21:58:06,890 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 34 selfloop transitions, 14 changer transitions 10/59 dead transitions. [2024-10-31 21:58:06,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 59 transitions, 336 flow [2024-10-31 21:58:06,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 21:58:06,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 21:58:06,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 83 transitions. [2024-10-31 21:58:06,893 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2024-10-31 21:58:06,893 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 107 flow. Second operand 9 states and 83 transitions. [2024-10-31 21:58:06,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 59 transitions, 336 flow [2024-10-31 21:58:06,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 59 transitions, 324 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-31 21:58:06,897 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 190 flow [2024-10-31 21:58:06,898 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=190, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2024-10-31 21:58:06,898 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 19 predicate places. [2024-10-31 21:58:06,899 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 190 flow [2024-10-31 21:58:06,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-10-31 21:58:06,899 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:06,899 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:06,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 21:58:06,902 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 21:58:06,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:06,903 INFO L85 PathProgramCache]: Analyzing trace with hash 601559441, now seen corresponding path program 3 times [2024-10-31 21:58:06,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:06,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801207755] [2024-10-31 21:58:06,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:06,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:06,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:07,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:07,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:07,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801207755] [2024-10-31 21:58:07,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801207755] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:07,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:07,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 21:58:07,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104892210] [2024-10-31 21:58:07,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:07,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 21:58:07,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:07,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 21:58:07,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-31 21:58:07,166 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-31 21:58:07,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 190 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-10-31 21:58:07,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:07,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-31 21:58:07,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:07,474 INFO L124 PetriNetUnfolderBase]: 120/218 cut-off events. [2024-10-31 21:58:07,474 INFO L125 PetriNetUnfolderBase]: For 211/211 co-relation queries the response was YES. [2024-10-31 21:58:07,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 715 conditions, 218 events. 120/218 cut-off events. For 211/211 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 670 event pairs, 10 based on Foata normal form. 1/219 useless extension candidates. Maximal degree in co-relation 698. Up to 119 conditions per place. [2024-10-31 21:58:07,480 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 39 selfloop transitions, 18 changer transitions 10/68 dead transitions. [2024-10-31 21:58:07,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 68 transitions, 457 flow [2024-10-31 21:58:07,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 21:58:07,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 21:58:07,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-10-31 21:58:07,483 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-10-31 21:58:07,483 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 190 flow. Second operand 9 states and 87 transitions. [2024-10-31 21:58:07,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 68 transitions, 457 flow [2024-10-31 21:58:07,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 68 transitions, 422 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-10-31 21:58:07,488 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 256 flow [2024-10-31 21:58:07,489 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=256, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2024-10-31 21:58:07,491 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 25 predicate places. [2024-10-31 21:58:07,491 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 256 flow [2024-10-31 21:58:07,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-10-31 21:58:07,491 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:07,492 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:07,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 21:58:07,492 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 21:58:07,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:07,493 INFO L85 PathProgramCache]: Analyzing trace with hash -626722445, now seen corresponding path program 4 times [2024-10-31 21:58:07,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:07,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283278258] [2024-10-31 21:58:07,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:07,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:07,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:07,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:07,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283278258] [2024-10-31 21:58:07,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283278258] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:07,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:07,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 21:58:07,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812707964] [2024-10-31 21:58:07,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:07,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 21:58:07,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:07,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 21:58:07,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-31 21:58:07,676 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-31 21:58:07,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 256 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-10-31 21:58:07,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:07,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-31 21:58:07,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:08,007 INFO L124 PetriNetUnfolderBase]: 140/247 cut-off events. [2024-10-31 21:58:08,008 INFO L125 PetriNetUnfolderBase]: For 412/412 co-relation queries the response was YES. [2024-10-31 21:58:08,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 904 conditions, 247 events. 140/247 cut-off events. For 412/412 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 739 event pairs, 20 based on Foata normal form. 1/248 useless extension candidates. Maximal degree in co-relation 886. Up to 129 conditions per place. [2024-10-31 21:58:08,011 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 36 selfloop transitions, 26 changer transitions 9/72 dead transitions. [2024-10-31 21:58:08,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 72 transitions, 570 flow [2024-10-31 21:58:08,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 21:58:08,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 21:58:08,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2024-10-31 21:58:08,013 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-10-31 21:58:08,013 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 256 flow. Second operand 9 states and 85 transitions. [2024-10-31 21:58:08,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 72 transitions, 570 flow [2024-10-31 21:58:08,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 72 transitions, 510 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-10-31 21:58:08,018 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 392 flow [2024-10-31 21:58:08,018 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=392, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2024-10-31 21:58:08,019 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 30 predicate places. [2024-10-31 21:58:08,019 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 392 flow [2024-10-31 21:58:08,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-10-31 21:58:08,020 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:08,020 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:08,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 21:58:08,021 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 21:58:08,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:08,021 INFO L85 PathProgramCache]: Analyzing trace with hash -477500787, now seen corresponding path program 5 times [2024-10-31 21:58:08,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:08,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895320705] [2024-10-31 21:58:08,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:08,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:08,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:08,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:08,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:08,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895320705] [2024-10-31 21:58:08,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895320705] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:08,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:08,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 21:58:08,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009383575] [2024-10-31 21:58:08,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:08,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 21:58:08,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:08,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 21:58:08,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-31 21:58:08,194 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-31 21:58:08,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 392 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-10-31 21:58:08,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:08,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-31 21:58:08,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:08,505 INFO L124 PetriNetUnfolderBase]: 149/262 cut-off events. [2024-10-31 21:58:08,505 INFO L125 PetriNetUnfolderBase]: For 622/622 co-relation queries the response was YES. [2024-10-31 21:58:08,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1048 conditions, 262 events. 149/262 cut-off events. For 622/622 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 850 event pairs, 11 based on Foata normal form. 1/263 useless extension candidates. Maximal degree in co-relation 1027. Up to 132 conditions per place. [2024-10-31 21:58:08,509 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 48 selfloop transitions, 25 changer transitions 10/84 dead transitions. [2024-10-31 21:58:08,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 84 transitions, 714 flow [2024-10-31 21:58:08,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 21:58:08,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 21:58:08,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-10-31 21:58:08,511 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-10-31 21:58:08,511 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 392 flow. Second operand 9 states and 90 transitions. [2024-10-31 21:58:08,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 84 transitions, 714 flow [2024-10-31 21:58:08,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 84 transitions, 669 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-10-31 21:58:08,519 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 424 flow [2024-10-31 21:58:08,521 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=424, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2024-10-31 21:58:08,523 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 35 predicate places. [2024-10-31 21:58:08,523 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 424 flow [2024-10-31 21:58:08,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-10-31 21:58:08,524 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:08,524 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:08,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 21:58:08,524 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 21:58:08,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:08,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1272129401, now seen corresponding path program 6 times [2024-10-31 21:58:08,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:08,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286073551] [2024-10-31 21:58:08,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:08,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:08,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:08,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:08,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:08,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286073551] [2024-10-31 21:58:08,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286073551] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:08,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:08,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 21:58:08,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173994610] [2024-10-31 21:58:08,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:08,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 21:58:08,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:08,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 21:58:08,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-31 21:58:08,718 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-31 21:58:08,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 424 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-10-31 21:58:08,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:08,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-31 21:58:08,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:09,039 INFO L124 PetriNetUnfolderBase]: 167/290 cut-off events. [2024-10-31 21:58:09,040 INFO L125 PetriNetUnfolderBase]: For 849/849 co-relation queries the response was YES. [2024-10-31 21:58:09,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1265 conditions, 290 events. 167/290 cut-off events. For 849/849 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 960 event pairs, 12 based on Foata normal form. 1/291 useless extension candidates. Maximal degree in co-relation 1243. Up to 149 conditions per place. [2024-10-31 21:58:09,043 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 43 selfloop transitions, 33 changer transitions 10/87 dead transitions. [2024-10-31 21:58:09,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 87 transitions, 821 flow [2024-10-31 21:58:09,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 21:58:09,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 21:58:09,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-10-31 21:58:09,045 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-10-31 21:58:09,045 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 424 flow. Second operand 9 states and 87 transitions. [2024-10-31 21:58:09,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 87 transitions, 821 flow [2024-10-31 21:58:09,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 87 transitions, 743 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-10-31 21:58:09,051 INFO L231 Difference]: Finished difference. Result has 63 places, 63 transitions, 588 flow [2024-10-31 21:58:09,052 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=588, PETRI_PLACES=63, PETRI_TRANSITIONS=63} [2024-10-31 21:58:09,052 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 39 predicate places. [2024-10-31 21:58:09,053 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 63 transitions, 588 flow [2024-10-31 21:58:09,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-10-31 21:58:09,053 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:09,053 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:09,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 21:58:09,054 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 21:58:09,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:09,055 INFO L85 PathProgramCache]: Analyzing trace with hash -2033059425, now seen corresponding path program 7 times [2024-10-31 21:58:09,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:09,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000087285] [2024-10-31 21:58:09,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:09,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:09,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:09,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:09,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:09,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000087285] [2024-10-31 21:58:09,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000087285] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:09,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:09,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 21:58:09,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93482546] [2024-10-31 21:58:09,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:09,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 21:58:09,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:09,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 21:58:09,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-31 21:58:09,214 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-31 21:58:09,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 63 transitions, 588 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-10-31 21:58:09,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:09,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-31 21:58:09,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:09,501 INFO L124 PetriNetUnfolderBase]: 164/286 cut-off events. [2024-10-31 21:58:09,501 INFO L125 PetriNetUnfolderBase]: For 1033/1033 co-relation queries the response was YES. [2024-10-31 21:58:09,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1339 conditions, 286 events. 164/286 cut-off events. For 1033/1033 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 948 event pairs, 14 based on Foata normal form. 1/287 useless extension candidates. Maximal degree in co-relation 1314. Up to 147 conditions per place. [2024-10-31 21:58:09,504 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 51 selfloop transitions, 29 changer transitions 11/92 dead transitions. [2024-10-31 21:58:09,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 92 transitions, 937 flow [2024-10-31 21:58:09,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 21:58:09,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 21:58:09,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2024-10-31 21:58:09,506 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-10-31 21:58:09,506 INFO L175 Difference]: Start difference. First operand has 63 places, 63 transitions, 588 flow. Second operand 9 states and 85 transitions. [2024-10-31 21:58:09,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 92 transitions, 937 flow [2024-10-31 21:58:09,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 92 transitions, 857 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-10-31 21:58:09,514 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 569 flow [2024-10-31 21:58:09,514 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=569, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2024-10-31 21:58:09,515 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 43 predicate places. [2024-10-31 21:58:09,515 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 569 flow [2024-10-31 21:58:09,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-10-31 21:58:09,515 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:09,516 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:09,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 21:58:09,516 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 21:58:09,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:09,517 INFO L85 PathProgramCache]: Analyzing trace with hash 557596545, now seen corresponding path program 8 times [2024-10-31 21:58:09,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:09,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596593256] [2024-10-31 21:58:09,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:09,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:09,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:09,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:09,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:09,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596593256] [2024-10-31 21:58:09,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596593256] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:09,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:09,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 21:58:09,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411422507] [2024-10-31 21:58:09,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:09,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 21:58:09,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:09,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 21:58:09,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-31 21:58:09,671 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-31 21:58:09,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 569 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-10-31 21:58:09,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:09,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-31 21:58:09,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:09,976 INFO L124 PetriNetUnfolderBase]: 177/308 cut-off events. [2024-10-31 21:58:09,976 INFO L125 PetriNetUnfolderBase]: For 1110/1110 co-relation queries the response was YES. [2024-10-31 21:58:09,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1368 conditions, 308 events. 177/308 cut-off events. For 1110/1110 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1045 event pairs, 14 based on Foata normal form. 1/309 useless extension candidates. Maximal degree in co-relation 1343. Up to 153 conditions per place. [2024-10-31 21:58:09,980 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 46 selfloop transitions, 34 changer transitions 10/91 dead transitions. [2024-10-31 21:58:09,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 91 transitions, 894 flow [2024-10-31 21:58:09,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 21:58:09,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 21:58:09,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-10-31 21:58:09,982 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4595959595959596 [2024-10-31 21:58:09,982 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 569 flow. Second operand 9 states and 91 transitions. [2024-10-31 21:58:09,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 91 transitions, 894 flow [2024-10-31 21:58:09,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 91 transitions, 830 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-10-31 21:58:09,989 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 633 flow [2024-10-31 21:58:09,989 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=633, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2024-10-31 21:58:09,990 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 44 predicate places. [2024-10-31 21:58:09,991 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 633 flow [2024-10-31 21:58:09,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-10-31 21:58:09,993 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:09,994 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:09,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 21:58:09,994 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 21:58:09,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:09,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1209208519, now seen corresponding path program 9 times [2024-10-31 21:58:09,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:09,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490960319] [2024-10-31 21:58:09,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:09,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:10,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:10,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:10,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:10,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490960319] [2024-10-31 21:58:10,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490960319] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:10,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:10,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 21:58:10,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374996344] [2024-10-31 21:58:10,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:10,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 21:58:10,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:10,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 21:58:10,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-31 21:58:10,189 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-31 21:58:10,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 633 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-10-31 21:58:10,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:10,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-31 21:58:10,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:10,485 INFO L124 PetriNetUnfolderBase]: 183/321 cut-off events. [2024-10-31 21:58:10,485 INFO L125 PetriNetUnfolderBase]: For 1267/1267 co-relation queries the response was YES. [2024-10-31 21:58:10,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1477 conditions, 321 events. 183/321 cut-off events. For 1267/1267 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1117 event pairs, 13 based on Foata normal form. 1/322 useless extension candidates. Maximal degree in co-relation 1450. Up to 169 conditions per place. [2024-10-31 21:58:10,489 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 47 selfloop transitions, 33 changer transitions 9/90 dead transitions. [2024-10-31 21:58:10,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 90 transitions, 921 flow [2024-10-31 21:58:10,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 21:58:10,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 21:58:10,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-10-31 21:58:10,491 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-10-31 21:58:10,491 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 633 flow. Second operand 9 states and 88 transitions. [2024-10-31 21:58:10,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 90 transitions, 921 flow [2024-10-31 21:58:10,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 90 transitions, 854 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-10-31 21:58:10,502 INFO L231 Difference]: Finished difference. Result has 72 places, 67 transitions, 663 flow [2024-10-31 21:58:10,502 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=663, PETRI_PLACES=72, PETRI_TRANSITIONS=67} [2024-10-31 21:58:10,503 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 48 predicate places. [2024-10-31 21:58:10,503 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 67 transitions, 663 flow [2024-10-31 21:58:10,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-10-31 21:58:10,504 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:10,504 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:10,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 21:58:10,504 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 21:58:10,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:10,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1807359203, now seen corresponding path program 10 times [2024-10-31 21:58:10,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:10,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709727194] [2024-10-31 21:58:10,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:10,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:10,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:10,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:10,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:10,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709727194] [2024-10-31 21:58:10,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709727194] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:10,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:10,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 21:58:10,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935118067] [2024-10-31 21:58:10,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:10,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 21:58:10,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:10,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 21:58:10,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-31 21:58:10,671 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-31 21:58:10,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 67 transitions, 663 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-10-31 21:58:10,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:10,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-31 21:58:10,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:10,985 INFO L124 PetriNetUnfolderBase]: 175/309 cut-off events. [2024-10-31 21:58:10,985 INFO L125 PetriNetUnfolderBase]: For 1370/1370 co-relation queries the response was YES. [2024-10-31 21:58:10,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1455 conditions, 309 events. 175/309 cut-off events. For 1370/1370 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1066 event pairs, 12 based on Foata normal form. 1/310 useless extension candidates. Maximal degree in co-relation 1427. Up to 171 conditions per place. [2024-10-31 21:58:10,990 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 46 selfloop transitions, 32 changer transitions 10/89 dead transitions. [2024-10-31 21:58:10,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 89 transitions, 942 flow [2024-10-31 21:58:10,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 21:58:10,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 21:58:10,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-10-31 21:58:10,992 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-10-31 21:58:10,992 INFO L175 Difference]: Start difference. First operand has 72 places, 67 transitions, 663 flow. Second operand 9 states and 88 transitions. [2024-10-31 21:58:10,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 89 transitions, 942 flow [2024-10-31 21:58:11,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 89 transitions, 863 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-10-31 21:58:11,002 INFO L231 Difference]: Finished difference. Result has 73 places, 66 transitions, 652 flow [2024-10-31 21:58:11,003 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=652, PETRI_PLACES=73, PETRI_TRANSITIONS=66} [2024-10-31 21:58:11,006 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 49 predicate places. [2024-10-31 21:58:11,006 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 66 transitions, 652 flow [2024-10-31 21:58:11,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-10-31 21:58:11,008 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:11,008 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:11,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 21:58:11,009 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 21:58:11,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:11,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1220331803, now seen corresponding path program 11 times [2024-10-31 21:58:11,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:11,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028541280] [2024-10-31 21:58:11,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:11,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:11,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:11,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:11,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028541280] [2024-10-31 21:58:11,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028541280] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:11,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:11,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 21:58:11,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353002637] [2024-10-31 21:58:11,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:11,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 21:58:11,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:11,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 21:58:11,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-31 21:58:11,242 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-31 21:58:11,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 66 transitions, 652 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-10-31 21:58:11,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:11,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-31 21:58:11,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:11,593 INFO L124 PetriNetUnfolderBase]: 172/305 cut-off events. [2024-10-31 21:58:11,593 INFO L125 PetriNetUnfolderBase]: For 1251/1251 co-relation queries the response was YES. [2024-10-31 21:58:11,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1412 conditions, 305 events. 172/305 cut-off events. For 1251/1251 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1053 event pairs, 12 based on Foata normal form. 1/306 useless extension candidates. Maximal degree in co-relation 1384. Up to 169 conditions per place. [2024-10-31 21:58:11,597 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 45 selfloop transitions, 30 changer transitions 11/87 dead transitions. [2024-10-31 21:58:11,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 87 transitions, 914 flow [2024-10-31 21:58:11,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 21:58:11,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 21:58:11,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 84 transitions. [2024-10-31 21:58:11,598 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-10-31 21:58:11,599 INFO L175 Difference]: Start difference. First operand has 73 places, 66 transitions, 652 flow. Second operand 9 states and 84 transitions. [2024-10-31 21:58:11,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 87 transitions, 914 flow [2024-10-31 21:58:11,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 87 transitions, 842 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-10-31 21:58:11,609 INFO L231 Difference]: Finished difference. Result has 75 places, 64 transitions, 616 flow [2024-10-31 21:58:11,609 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=616, PETRI_PLACES=75, PETRI_TRANSITIONS=64} [2024-10-31 21:58:11,610 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 51 predicate places. [2024-10-31 21:58:11,610 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 64 transitions, 616 flow [2024-10-31 21:58:11,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-10-31 21:58:11,610 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:11,610 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:11,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-31 21:58:11,611 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 21:58:11,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:11,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1755561605, now seen corresponding path program 12 times [2024-10-31 21:58:11,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:11,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868261249] [2024-10-31 21:58:11,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:11,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:11,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:11,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:11,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:11,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868261249] [2024-10-31 21:58:11,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868261249] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:11,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:11,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 21:58:11,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076985540] [2024-10-31 21:58:11,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:11,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 21:58:11,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:11,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 21:58:11,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-31 21:58:11,791 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-31 21:58:11,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 64 transitions, 616 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-10-31 21:58:11,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:11,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-31 21:58:11,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:12,172 INFO L124 PetriNetUnfolderBase]: 165/292 cut-off events. [2024-10-31 21:58:12,173 INFO L125 PetriNetUnfolderBase]: For 1176/1176 co-relation queries the response was YES. [2024-10-31 21:58:12,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1347 conditions, 292 events. 165/292 cut-off events. For 1176/1176 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 993 event pairs, 15 based on Foata normal form. 1/293 useless extension candidates. Maximal degree in co-relation 1318. Up to 159 conditions per place. [2024-10-31 21:58:12,176 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 44 selfloop transitions, 28 changer transitions 11/84 dead transitions. [2024-10-31 21:58:12,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 84 transitions, 868 flow [2024-10-31 21:58:12,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 21:58:12,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 21:58:12,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2024-10-31 21:58:12,179 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-10-31 21:58:12,179 INFO L175 Difference]: Start difference. First operand has 75 places, 64 transitions, 616 flow. Second operand 9 states and 85 transitions. [2024-10-31 21:58:12,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 84 transitions, 868 flow [2024-10-31 21:58:12,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 84 transitions, 804 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-10-31 21:58:12,191 INFO L231 Difference]: Finished difference. Result has 73 places, 61 transitions, 579 flow [2024-10-31 21:58:12,191 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=579, PETRI_PLACES=73, PETRI_TRANSITIONS=61} [2024-10-31 21:58:12,193 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 49 predicate places. [2024-10-31 21:58:12,195 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 61 transitions, 579 flow [2024-10-31 21:58:12,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-10-31 21:58:12,195 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:12,195 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:12,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-31 21:58:12,196 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 21:58:12,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:12,196 INFO L85 PathProgramCache]: Analyzing trace with hash -39695045, now seen corresponding path program 13 times [2024-10-31 21:58:12,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:12,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10083519] [2024-10-31 21:58:12,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:12,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:12,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:12,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:12,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:12,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10083519] [2024-10-31 21:58:12,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10083519] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:12,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:12,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 21:58:12,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896063688] [2024-10-31 21:58:12,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:12,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 21:58:12,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:12,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 21:58:12,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-31 21:58:12,397 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-31 21:58:12,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 61 transitions, 579 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-10-31 21:58:12,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:12,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-31 21:58:12,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:12,785 INFO L124 PetriNetUnfolderBase]: 163/289 cut-off events. [2024-10-31 21:58:12,785 INFO L125 PetriNetUnfolderBase]: For 1182/1182 co-relation queries the response was YES. [2024-10-31 21:58:12,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1304 conditions, 289 events. 163/289 cut-off events. For 1182/1182 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 952 event pairs, 18 based on Foata normal form. 1/290 useless extension candidates. Maximal degree in co-relation 1276. Up to 157 conditions per place. [2024-10-31 21:58:12,788 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 43 selfloop transitions, 30 changer transitions 10/84 dead transitions. [2024-10-31 21:58:12,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 84 transitions, 868 flow [2024-10-31 21:58:12,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 21:58:12,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 21:58:12,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2024-10-31 21:58:12,790 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-10-31 21:58:12,790 INFO L175 Difference]: Start difference. First operand has 73 places, 61 transitions, 579 flow. Second operand 9 states and 85 transitions. [2024-10-31 21:58:12,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 84 transitions, 868 flow [2024-10-31 21:58:12,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 84 transitions, 804 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-10-31 21:58:12,799 INFO L231 Difference]: Finished difference. Result has 75 places, 63 transitions, 621 flow [2024-10-31 21:58:12,799 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=621, PETRI_PLACES=75, PETRI_TRANSITIONS=63} [2024-10-31 21:58:12,799 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 51 predicate places. [2024-10-31 21:58:12,800 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 63 transitions, 621 flow [2024-10-31 21:58:12,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-10-31 21:58:12,800 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:12,800 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:12,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-31 21:58:12,801 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 21:58:12,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:12,801 INFO L85 PathProgramCache]: Analyzing trace with hash -372122145, now seen corresponding path program 14 times [2024-10-31 21:58:12,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:12,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820194069] [2024-10-31 21:58:12,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:12,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:12,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:12,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:12,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:12,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820194069] [2024-10-31 21:58:12,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820194069] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:12,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:12,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 21:58:12,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397103664] [2024-10-31 21:58:12,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:12,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 21:58:12,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:12,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 21:58:12,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-31 21:58:12,957 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-31 21:58:12,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 63 transitions, 621 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-10-31 21:58:12,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:12,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-31 21:58:12,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:13,295 INFO L124 PetriNetUnfolderBase]: 168/297 cut-off events. [2024-10-31 21:58:13,296 INFO L125 PetriNetUnfolderBase]: For 1388/1388 co-relation queries the response was YES. [2024-10-31 21:58:13,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1382 conditions, 297 events. 168/297 cut-off events. For 1388/1388 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 974 event pairs, 18 based on Foata normal form. 1/298 useless extension candidates. Maximal degree in co-relation 1351. Up to 109 conditions per place. [2024-10-31 21:58:13,300 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 52 selfloop transitions, 26 changer transitions 9/88 dead transitions. [2024-10-31 21:58:13,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 88 transitions, 942 flow [2024-10-31 21:58:13,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 21:58:13,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 21:58:13,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 81 transitions. [2024-10-31 21:58:13,302 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-10-31 21:58:13,302 INFO L175 Difference]: Start difference. First operand has 75 places, 63 transitions, 621 flow. Second operand 9 states and 81 transitions. [2024-10-31 21:58:13,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 88 transitions, 942 flow [2024-10-31 21:58:13,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 88 transitions, 891 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-10-31 21:58:13,311 INFO L231 Difference]: Finished difference. Result has 78 places, 64 transitions, 644 flow [2024-10-31 21:58:13,311 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=644, PETRI_PLACES=78, PETRI_TRANSITIONS=64} [2024-10-31 21:58:13,313 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 54 predicate places. [2024-10-31 21:58:13,313 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 64 transitions, 644 flow [2024-10-31 21:58:13,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-10-31 21:58:13,314 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:13,314 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:13,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-31 21:58:13,314 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 21:58:13,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:13,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1597832343, now seen corresponding path program 15 times [2024-10-31 21:58:13,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:13,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158784886] [2024-10-31 21:58:13,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:13,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:13,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:13,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:13,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:13,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158784886] [2024-10-31 21:58:13,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158784886] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:13,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:13,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 21:58:13,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394646690] [2024-10-31 21:58:13,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:13,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 21:58:13,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:13,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 21:58:13,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-31 21:58:13,480 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-31 21:58:13,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 64 transitions, 644 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-10-31 21:58:13,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:13,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-31 21:58:13,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:13,822 INFO L124 PetriNetUnfolderBase]: 180/320 cut-off events. [2024-10-31 21:58:13,822 INFO L125 PetriNetUnfolderBase]: For 1566/1566 co-relation queries the response was YES. [2024-10-31 21:58:13,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1482 conditions, 320 events. 180/320 cut-off events. For 1566/1566 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1103 event pairs, 24 based on Foata normal form. 1/321 useless extension candidates. Maximal degree in co-relation 1451. Up to 171 conditions per place. [2024-10-31 21:58:13,826 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 47 selfloop transitions, 31 changer transitions 10/89 dead transitions. [2024-10-31 21:58:13,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 89 transitions, 948 flow [2024-10-31 21:58:13,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 21:58:13,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 21:58:13,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-10-31 21:58:13,827 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-10-31 21:58:13,827 INFO L175 Difference]: Start difference. First operand has 78 places, 64 transitions, 644 flow. Second operand 9 states and 88 transitions. [2024-10-31 21:58:13,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 89 transitions, 948 flow [2024-10-31 21:58:13,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 89 transitions, 868 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-10-31 21:58:13,837 INFO L231 Difference]: Finished difference. Result has 80 places, 66 transitions, 656 flow [2024-10-31 21:58:13,837 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=656, PETRI_PLACES=80, PETRI_TRANSITIONS=66} [2024-10-31 21:58:13,838 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 56 predicate places. [2024-10-31 21:58:13,838 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 66 transitions, 656 flow [2024-10-31 21:58:13,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-10-31 21:58:13,838 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:13,838 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:13,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-31 21:58:13,839 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 21:58:13,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:13,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1512864189, now seen corresponding path program 16 times [2024-10-31 21:58:13,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:13,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237819447] [2024-10-31 21:58:13,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:13,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:13,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:13,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:13,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:13,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237819447] [2024-10-31 21:58:13,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237819447] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:13,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:13,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 21:58:13,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839060294] [2024-10-31 21:58:13,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:13,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 21:58:13,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:13,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 21:58:13,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-31 21:58:13,991 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-31 21:58:13,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 66 transitions, 656 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-10-31 21:58:13,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:13,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-31 21:58:13,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:14,288 INFO L124 PetriNetUnfolderBase]: 186/333 cut-off events. [2024-10-31 21:58:14,288 INFO L125 PetriNetUnfolderBase]: For 1587/1587 co-relation queries the response was YES. [2024-10-31 21:58:14,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1526 conditions, 333 events. 186/333 cut-off events. For 1587/1587 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1181 event pairs, 22 based on Foata normal form. 1/334 useless extension candidates. Maximal degree in co-relation 1495. Up to 189 conditions per place. [2024-10-31 21:58:14,292 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 54 selfloop transitions, 27 changer transitions 9/91 dead transitions. [2024-10-31 21:58:14,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 91 transitions, 993 flow [2024-10-31 21:58:14,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 21:58:14,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 21:58:14,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 84 transitions. [2024-10-31 21:58:14,294 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-10-31 21:58:14,294 INFO L175 Difference]: Start difference. First operand has 80 places, 66 transitions, 656 flow. Second operand 9 states and 84 transitions. [2024-10-31 21:58:14,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 91 transitions, 993 flow [2024-10-31 21:58:14,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 91 transitions, 921 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-10-31 21:58:14,305 INFO L231 Difference]: Finished difference. Result has 82 places, 68 transitions, 671 flow [2024-10-31 21:58:14,305 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=671, PETRI_PLACES=82, PETRI_TRANSITIONS=68} [2024-10-31 21:58:14,305 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 58 predicate places. [2024-10-31 21:58:14,306 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 68 transitions, 671 flow [2024-10-31 21:58:14,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-10-31 21:58:14,306 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:14,306 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:14,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-31 21:58:14,307 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 21:58:14,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:14,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1499169893, now seen corresponding path program 17 times [2024-10-31 21:58:14,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:14,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476894953] [2024-10-31 21:58:14,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:14,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:14,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:14,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:14,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:14,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476894953] [2024-10-31 21:58:14,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476894953] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:14,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:14,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 21:58:14,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96319654] [2024-10-31 21:58:14,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:14,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 21:58:14,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:14,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 21:58:14,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-31 21:58:14,464 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-31 21:58:14,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 68 transitions, 671 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-10-31 21:58:14,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:14,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-31 21:58:14,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:14,743 INFO L124 PetriNetUnfolderBase]: 182/329 cut-off events. [2024-10-31 21:58:14,743 INFO L125 PetriNetUnfolderBase]: For 1623/1623 co-relation queries the response was YES. [2024-10-31 21:58:14,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1515 conditions, 329 events. 182/329 cut-off events. For 1623/1623 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1183 event pairs, 24 based on Foata normal form. 1/330 useless extension candidates. Maximal degree in co-relation 1483. Up to 199 conditions per place. [2024-10-31 21:58:14,746 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 47 selfloop transitions, 28 changer transitions 11/87 dead transitions. [2024-10-31 21:58:14,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 87 transitions, 947 flow [2024-10-31 21:58:14,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 21:58:14,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 21:58:14,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 83 transitions. [2024-10-31 21:58:14,747 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2024-10-31 21:58:14,747 INFO L175 Difference]: Start difference. First operand has 82 places, 68 transitions, 671 flow. Second operand 9 states and 83 transitions. [2024-10-31 21:58:14,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 87 transitions, 947 flow [2024-10-31 21:58:14,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 87 transitions, 877 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-10-31 21:58:14,756 INFO L231 Difference]: Finished difference. Result has 83 places, 66 transitions, 638 flow [2024-10-31 21:58:14,757 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=638, PETRI_PLACES=83, PETRI_TRANSITIONS=66} [2024-10-31 21:58:14,757 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 59 predicate places. [2024-10-31 21:58:14,757 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 66 transitions, 638 flow [2024-10-31 21:58:14,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-10-31 21:58:14,757 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:14,758 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:14,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-31 21:58:14,758 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 21:58:14,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:14,758 INFO L85 PathProgramCache]: Analyzing trace with hash -352562785, now seen corresponding path program 18 times [2024-10-31 21:58:14,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:14,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448585502] [2024-10-31 21:58:14,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:14,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:14,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:14,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:14,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448585502] [2024-10-31 21:58:14,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448585502] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:14,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:14,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 21:58:14,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115658928] [2024-10-31 21:58:14,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:14,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 21:58:14,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:14,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 21:58:14,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-31 21:58:14,903 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-31 21:58:14,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 66 transitions, 638 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-10-31 21:58:14,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:14,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-31 21:58:14,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:15,194 INFO L124 PetriNetUnfolderBase]: 175/316 cut-off events. [2024-10-31 21:58:15,195 INFO L125 PetriNetUnfolderBase]: For 1499/1499 co-relation queries the response was YES. [2024-10-31 21:58:15,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1429 conditions, 316 events. 175/316 cut-off events. For 1499/1499 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1105 event pairs, 25 based on Foata normal form. 1/317 useless extension candidates. Maximal degree in co-relation 1397. Up to 189 conditions per place. [2024-10-31 21:58:15,215 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 52 selfloop transitions, 22 changer transitions 11/86 dead transitions. [2024-10-31 21:58:15,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 86 transitions, 939 flow [2024-10-31 21:58:15,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 21:58:15,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 21:58:15,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 81 transitions. [2024-10-31 21:58:15,217 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-10-31 21:58:15,217 INFO L175 Difference]: Start difference. First operand has 83 places, 66 transitions, 638 flow. Second operand 9 states and 81 transitions. [2024-10-31 21:58:15,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 86 transitions, 939 flow [2024-10-31 21:58:15,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 86 transitions, 879 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-10-31 21:58:15,226 INFO L231 Difference]: Finished difference. Result has 81 places, 63 transitions, 592 flow [2024-10-31 21:58:15,227 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=592, PETRI_PLACES=81, PETRI_TRANSITIONS=63} [2024-10-31 21:58:15,227 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 57 predicate places. [2024-10-31 21:58:15,227 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 63 transitions, 592 flow [2024-10-31 21:58:15,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-10-31 21:58:15,228 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:15,228 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:15,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-31 21:58:15,228 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 21:58:15,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:15,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1982602097, now seen corresponding path program 19 times [2024-10-31 21:58:15,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:15,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633565157] [2024-10-31 21:58:15,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:15,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:15,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:15,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:15,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633565157] [2024-10-31 21:58:15,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633565157] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:15,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:15,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 21:58:15,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497605294] [2024-10-31 21:58:15,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:15,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 21:58:15,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:15,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 21:58:15,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-31 21:58:15,378 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-31 21:58:15,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 63 transitions, 592 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-10-31 21:58:15,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:15,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-31 21:58:15,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:15,633 INFO L124 PetriNetUnfolderBase]: 168/303 cut-off events. [2024-10-31 21:58:15,633 INFO L125 PetriNetUnfolderBase]: For 1453/1453 co-relation queries the response was YES. [2024-10-31 21:58:15,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1362 conditions, 303 events. 168/303 cut-off events. For 1453/1453 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1044 event pairs, 24 based on Foata normal form. 1/304 useless extension candidates. Maximal degree in co-relation 1331. Up to 177 conditions per place. [2024-10-31 21:58:15,636 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 45 selfloop transitions, 24 changer transitions 12/82 dead transitions. [2024-10-31 21:58:15,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 82 transitions, 854 flow [2024-10-31 21:58:15,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 21:58:15,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 21:58:15,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 84 transitions. [2024-10-31 21:58:15,638 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-10-31 21:58:15,638 INFO L175 Difference]: Start difference. First operand has 81 places, 63 transitions, 592 flow. Second operand 9 states and 84 transitions. [2024-10-31 21:58:15,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 82 transitions, 854 flow [2024-10-31 21:58:15,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 82 transitions, 804 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-31 21:58:15,646 INFO L231 Difference]: Finished difference. Result has 80 places, 60 transitions, 560 flow [2024-10-31 21:58:15,647 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=560, PETRI_PLACES=80, PETRI_TRANSITIONS=60} [2024-10-31 21:58:15,647 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 56 predicate places. [2024-10-31 21:58:15,647 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 60 transitions, 560 flow [2024-10-31 21:58:15,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-10-31 21:58:15,648 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:15,648 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:15,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-31 21:58:15,648 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 21:58:15,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:15,649 INFO L85 PathProgramCache]: Analyzing trace with hash -168972721, now seen corresponding path program 20 times [2024-10-31 21:58:15,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:15,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330993963] [2024-10-31 21:58:15,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:15,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:15,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:15,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:15,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:15,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330993963] [2024-10-31 21:58:15,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330993963] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:15,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:15,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 21:58:15,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300727129] [2024-10-31 21:58:15,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:15,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 21:58:15,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:15,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 21:58:15,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-31 21:58:15,801 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-31 21:58:15,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 60 transitions, 560 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-10-31 21:58:15,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:15,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-31 21:58:15,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:16,095 INFO L124 PetriNetUnfolderBase]: 172/308 cut-off events. [2024-10-31 21:58:16,095 INFO L125 PetriNetUnfolderBase]: For 1620/1620 co-relation queries the response was YES. [2024-10-31 21:58:16,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1383 conditions, 308 events. 172/308 cut-off events. For 1620/1620 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1036 event pairs, 23 based on Foata normal form. 1/309 useless extension candidates. Maximal degree in co-relation 1352. Up to 179 conditions per place. [2024-10-31 21:58:16,098 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 47 selfloop transitions, 25 changer transitions 9/82 dead transitions. [2024-10-31 21:58:16,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 82 transitions, 852 flow [2024-10-31 21:58:16,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 21:58:16,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 21:58:16,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 84 transitions. [2024-10-31 21:58:16,100 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-10-31 21:58:16,100 INFO L175 Difference]: Start difference. First operand has 80 places, 60 transitions, 560 flow. Second operand 9 states and 84 transitions. [2024-10-31 21:58:16,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 82 transitions, 852 flow [2024-10-31 21:58:16,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 82 transitions, 796 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-10-31 21:58:16,109 INFO L231 Difference]: Finished difference. Result has 81 places, 61 transitions, 582 flow [2024-10-31 21:58:16,109 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=582, PETRI_PLACES=81, PETRI_TRANSITIONS=61} [2024-10-31 21:58:16,109 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 57 predicate places. [2024-10-31 21:58:16,110 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 61 transitions, 582 flow [2024-10-31 21:58:16,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2024-10-31 21:58:16,110 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:16,110 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:16,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-31 21:58:16,110 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 21:58:16,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:16,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1950102677, now seen corresponding path program 1 times [2024-10-31 21:58:16,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:16,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808524570] [2024-10-31 21:58:16,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:16,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:16,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:16,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:16,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:16,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808524570] [2024-10-31 21:58:16,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808524570] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:16,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:16,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 21:58:16,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347529844] [2024-10-31 21:58:16,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:16,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:58:16,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:16,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:58:16,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:58:16,173 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-10-31 21:58:16,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 61 transitions, 582 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2024-10-31 21:58:16,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:16,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-10-31 21:58:16,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:16,363 INFO L124 PetriNetUnfolderBase]: 211/411 cut-off events. [2024-10-31 21:58:16,363 INFO L125 PetriNetUnfolderBase]: For 2791/2793 co-relation queries the response was YES. [2024-10-31 21:58:16,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1953 conditions, 411 events. 211/411 cut-off events. For 2791/2793 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1778 event pairs, 26 based on Foata normal form. 14/423 useless extension candidates. Maximal degree in co-relation 1916. Up to 112 conditions per place. [2024-10-31 21:58:16,369 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 56 selfloop transitions, 28 changer transitions 4/103 dead transitions. [2024-10-31 21:58:16,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 103 transitions, 1087 flow [2024-10-31 21:58:16,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 21:58:16,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 21:58:16,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-10-31 21:58:16,371 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-10-31 21:58:16,371 INFO L175 Difference]: Start difference. First operand has 81 places, 61 transitions, 582 flow. Second operand 7 states and 84 transitions. [2024-10-31 21:58:16,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 103 transitions, 1087 flow [2024-10-31 21:58:16,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 103 transitions, 1011 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-10-31 21:58:16,381 INFO L231 Difference]: Finished difference. Result has 82 places, 74 transitions, 793 flow [2024-10-31 21:58:16,382 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=793, PETRI_PLACES=82, PETRI_TRANSITIONS=74} [2024-10-31 21:58:16,382 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 58 predicate places. [2024-10-31 21:58:16,382 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 74 transitions, 793 flow [2024-10-31 21:58:16,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2024-10-31 21:58:16,383 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:16,383 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:16,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-31 21:58:16,383 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 21:58:16,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:16,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1746424653, now seen corresponding path program 2 times [2024-10-31 21:58:16,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:16,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760924952] [2024-10-31 21:58:16,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:16,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:16,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:16,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:16,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:16,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760924952] [2024-10-31 21:58:16,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760924952] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:16,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:16,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 21:58:16,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756327341] [2024-10-31 21:58:16,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:16,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:58:16,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:16,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:58:16,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:58:16,435 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-10-31 21:58:16,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 74 transitions, 793 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2024-10-31 21:58:16,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:16,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-10-31 21:58:16,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:16,611 INFO L124 PetriNetUnfolderBase]: 233/461 cut-off events. [2024-10-31 21:58:16,612 INFO L125 PetriNetUnfolderBase]: For 3962/3962 co-relation queries the response was YES. [2024-10-31 21:58:16,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2326 conditions, 461 events. 233/461 cut-off events. For 3962/3962 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2034 event pairs, 51 based on Foata normal form. 8/467 useless extension candidates. Maximal degree in co-relation 2161. Up to 204 conditions per place. [2024-10-31 21:58:16,616 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 67 selfloop transitions, 21 changer transitions 0/103 dead transitions. [2024-10-31 21:58:16,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 103 transitions, 1164 flow [2024-10-31 21:58:16,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:58:16,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 21:58:16,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2024-10-31 21:58:16,618 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6545454545454545 [2024-10-31 21:58:16,618 INFO L175 Difference]: Start difference. First operand has 82 places, 74 transitions, 793 flow. Second operand 5 states and 72 transitions. [2024-10-31 21:58:16,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 103 transitions, 1164 flow [2024-10-31 21:58:16,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 103 transitions, 1069 flow, removed 35 selfloop flow, removed 3 redundant places. [2024-10-31 21:58:16,634 INFO L231 Difference]: Finished difference. Result has 86 places, 80 transitions, 860 flow [2024-10-31 21:58:16,635 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=860, PETRI_PLACES=86, PETRI_TRANSITIONS=80} [2024-10-31 21:58:16,635 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 62 predicate places. [2024-10-31 21:58:16,636 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 80 transitions, 860 flow [2024-10-31 21:58:16,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2024-10-31 21:58:16,636 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:16,636 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:16,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-31 21:58:16,636 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 21:58:16,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:16,637 INFO L85 PathProgramCache]: Analyzing trace with hash -442183470, now seen corresponding path program 1 times [2024-10-31 21:58:16,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:16,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841331506] [2024-10-31 21:58:16,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:16,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:16,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:16,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:16,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:16,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841331506] [2024-10-31 21:58:16,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841331506] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:58:16,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334251243] [2024-10-31 21:58:16,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:16,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:16,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:16,688 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:58:16,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 21:58:16,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:16,751 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 21:58:16,756 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:16,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:16,812 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:58:16,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:16,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334251243] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-31 21:58:16,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-31 21:58:16,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2024-10-31 21:58:16,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772718667] [2024-10-31 21:58:16,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:16,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:58:16,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:16,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:58:16,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-31 21:58:16,892 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-10-31 21:58:16,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 80 transitions, 860 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2024-10-31 21:58:16,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:16,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-10-31 21:58:16,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:17,150 INFO L124 PetriNetUnfolderBase]: 320/656 cut-off events. [2024-10-31 21:58:17,150 INFO L125 PetriNetUnfolderBase]: For 4647/4655 co-relation queries the response was YES. [2024-10-31 21:58:17,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3139 conditions, 656 events. 320/656 cut-off events. For 4647/4655 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3348 event pairs, 17 based on Foata normal form. 17/667 useless extension candidates. Maximal degree in co-relation 2713. Up to 290 conditions per place. [2024-10-31 21:58:17,157 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 62 selfloop transitions, 34 changer transitions 0/111 dead transitions. [2024-10-31 21:58:17,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 111 transitions, 1289 flow [2024-10-31 21:58:17,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:58:17,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 21:58:17,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2024-10-31 21:58:17,159 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6454545454545455 [2024-10-31 21:58:17,159 INFO L175 Difference]: Start difference. First operand has 86 places, 80 transitions, 860 flow. Second operand 5 states and 71 transitions. [2024-10-31 21:58:17,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 111 transitions, 1289 flow [2024-10-31 21:58:17,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 111 transitions, 1218 flow, removed 27 selfloop flow, removed 1 redundant places. [2024-10-31 21:58:17,179 INFO L231 Difference]: Finished difference. Result has 92 places, 87 transitions, 1040 flow [2024-10-31 21:58:17,179 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=809, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1040, PETRI_PLACES=92, PETRI_TRANSITIONS=87} [2024-10-31 21:58:17,180 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 68 predicate places. [2024-10-31 21:58:17,181 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 87 transitions, 1040 flow [2024-10-31 21:58:17,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2024-10-31 21:58:17,181 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:17,181 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:17,205 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 21:58:17,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:17,386 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 21:58:17,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:17,387 INFO L85 PathProgramCache]: Analyzing trace with hash 880584829, now seen corresponding path program 3 times [2024-10-31 21:58:17,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:17,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113056951] [2024-10-31 21:58:17,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:17,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:17,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:17,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:17,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113056951] [2024-10-31 21:58:17,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113056951] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:17,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:17,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 21:58:17,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579247194] [2024-10-31 21:58:17,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:17,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:58:17,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:17,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:58:17,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:58:17,458 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-10-31 21:58:17,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 87 transitions, 1040 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2024-10-31 21:58:17,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:17,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-10-31 21:58:17,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:17,712 INFO L124 PetriNetUnfolderBase]: 311/650 cut-off events. [2024-10-31 21:58:17,712 INFO L125 PetriNetUnfolderBase]: For 4834/4842 co-relation queries the response was YES. [2024-10-31 21:58:17,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3172 conditions, 650 events. 311/650 cut-off events. For 4834/4842 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3360 event pairs, 37 based on Foata normal form. 15/663 useless extension candidates. Maximal degree in co-relation 3001. Up to 154 conditions per place. [2024-10-31 21:58:17,720 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 72 selfloop transitions, 30 changer transitions 4/121 dead transitions. [2024-10-31 21:58:17,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 121 transitions, 1462 flow [2024-10-31 21:58:17,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 21:58:17,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 21:58:17,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-10-31 21:58:17,722 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-10-31 21:58:17,722 INFO L175 Difference]: Start difference. First operand has 92 places, 87 transitions, 1040 flow. Second operand 8 states and 99 transitions. [2024-10-31 21:58:17,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 121 transitions, 1462 flow [2024-10-31 21:58:17,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 121 transitions, 1436 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-10-31 21:58:17,746 INFO L231 Difference]: Finished difference. Result has 99 places, 86 transitions, 1081 flow [2024-10-31 21:58:17,746 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1081, PETRI_PLACES=99, PETRI_TRANSITIONS=86} [2024-10-31 21:58:17,747 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 75 predicate places. [2024-10-31 21:58:17,747 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 86 transitions, 1081 flow [2024-10-31 21:58:17,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2024-10-31 21:58:17,748 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:17,748 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:17,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-31 21:58:17,748 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 21:58:17,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:17,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1498949658, now seen corresponding path program 2 times [2024-10-31 21:58:17,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:17,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636180783] [2024-10-31 21:58:17,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:17,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:17,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:17,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:17,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:17,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636180783] [2024-10-31 21:58:17,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636180783] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:17,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:17,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 21:58:17,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774271138] [2024-10-31 21:58:17,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:17,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:58:17,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:17,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:58:17,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:58:17,801 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-10-31 21:58:17,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 86 transitions, 1081 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2024-10-31 21:58:17,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:17,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-10-31 21:58:17,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:18,000 INFO L124 PetriNetUnfolderBase]: 274/574 cut-off events. [2024-10-31 21:58:18,001 INFO L125 PetriNetUnfolderBase]: For 4656/4664 co-relation queries the response was YES. [2024-10-31 21:58:18,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2936 conditions, 574 events. 274/574 cut-off events. For 4656/4664 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2867 event pairs, 19 based on Foata normal form. 20/594 useless extension candidates. Maximal degree in co-relation 2777. Up to 170 conditions per place. [2024-10-31 21:58:18,007 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 64 selfloop transitions, 24 changer transitions 3/105 dead transitions. [2024-10-31 21:58:18,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 105 transitions, 1396 flow [2024-10-31 21:58:18,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 21:58:18,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 21:58:18,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 74 transitions. [2024-10-31 21:58:18,008 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5606060606060606 [2024-10-31 21:58:18,008 INFO L175 Difference]: Start difference. First operand has 99 places, 86 transitions, 1081 flow. Second operand 6 states and 74 transitions. [2024-10-31 21:58:18,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 105 transitions, 1396 flow [2024-10-31 21:58:18,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 105 transitions, 1340 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-10-31 21:58:18,031 INFO L231 Difference]: Finished difference. Result has 102 places, 79 transitions, 987 flow [2024-10-31 21:58:18,031 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=969, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=987, PETRI_PLACES=102, PETRI_TRANSITIONS=79} [2024-10-31 21:58:18,031 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 78 predicate places. [2024-10-31 21:58:18,032 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 79 transitions, 987 flow [2024-10-31 21:58:18,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2024-10-31 21:58:18,032 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:18,032 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:18,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-31 21:58:18,033 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 21:58:18,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:18,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1124435803, now seen corresponding path program 4 times [2024-10-31 21:58:18,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:18,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764085433] [2024-10-31 21:58:18,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:18,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:18,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:18,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:18,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:18,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764085433] [2024-10-31 21:58:18,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764085433] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:18,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:18,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 21:58:18,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170165178] [2024-10-31 21:58:18,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:18,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:58:18,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:18,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:58:18,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:58:18,093 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-10-31 21:58:18,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 79 transitions, 987 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2024-10-31 21:58:18,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:18,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-10-31 21:58:18,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:18,265 INFO L124 PetriNetUnfolderBase]: 245/503 cut-off events. [2024-10-31 21:58:18,265 INFO L125 PetriNetUnfolderBase]: For 4372/4376 co-relation queries the response was YES. [2024-10-31 21:58:18,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2568 conditions, 503 events. 245/503 cut-off events. For 4372/4376 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2347 event pairs, 30 based on Foata normal form. 12/512 useless extension candidates. Maximal degree in co-relation 2453. Up to 272 conditions per place. [2024-10-31 21:58:18,271 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 58 selfloop transitions, 21 changer transitions 1/94 dead transitions. [2024-10-31 21:58:18,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 94 transitions, 1192 flow [2024-10-31 21:58:18,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:58:18,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 21:58:18,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 65 transitions. [2024-10-31 21:58:18,273 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2024-10-31 21:58:18,273 INFO L175 Difference]: Start difference. First operand has 102 places, 79 transitions, 987 flow. Second operand 5 states and 65 transitions. [2024-10-31 21:58:18,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 94 transitions, 1192 flow [2024-10-31 21:58:18,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 94 transitions, 1140 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-10-31 21:58:18,290 INFO L231 Difference]: Finished difference. Result has 99 places, 77 transitions, 927 flow [2024-10-31 21:58:18,290 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=889, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=927, PETRI_PLACES=99, PETRI_TRANSITIONS=77} [2024-10-31 21:58:18,291 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 75 predicate places. [2024-10-31 21:58:18,291 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 77 transitions, 927 flow [2024-10-31 21:58:18,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2024-10-31 21:58:18,292 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:18,292 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:18,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-31 21:58:18,292 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 21:58:18,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:18,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1220290974, now seen corresponding path program 3 times [2024-10-31 21:58:18,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:18,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346714164] [2024-10-31 21:58:18,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:18,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:18,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:18,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:18,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346714164] [2024-10-31 21:58:18,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346714164] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:18,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:18,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 21:58:18,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134607172] [2024-10-31 21:58:18,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:18,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:58:18,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:18,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:58:18,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:58:18,347 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-10-31 21:58:18,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 77 transitions, 927 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2024-10-31 21:58:18,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:18,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-10-31 21:58:18,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:18,540 INFO L124 PetriNetUnfolderBase]: 313/623 cut-off events. [2024-10-31 21:58:18,540 INFO L125 PetriNetUnfolderBase]: For 5299/5301 co-relation queries the response was YES. [2024-10-31 21:58:18,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3240 conditions, 623 events. 313/623 cut-off events. For 5299/5301 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3074 event pairs, 92 based on Foata normal form. 11/625 useless extension candidates. Maximal degree in co-relation 3074. Up to 375 conditions per place. [2024-10-31 21:58:18,547 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 68 selfloop transitions, 31 changer transitions 0/113 dead transitions. [2024-10-31 21:58:18,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 113 transitions, 1493 flow [2024-10-31 21:58:18,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:58:18,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 21:58:18,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 68 transitions. [2024-10-31 21:58:18,548 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6181818181818182 [2024-10-31 21:58:18,548 INFO L175 Difference]: Start difference. First operand has 99 places, 77 transitions, 927 flow. Second operand 5 states and 68 transitions. [2024-10-31 21:58:18,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 113 transitions, 1493 flow [2024-10-31 21:58:18,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 113 transitions, 1410 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-10-31 21:58:18,567 INFO L231 Difference]: Finished difference. Result has 97 places, 92 transitions, 1212 flow [2024-10-31 21:58:18,568 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1212, PETRI_PLACES=97, PETRI_TRANSITIONS=92} [2024-10-31 21:58:18,568 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 73 predicate places. [2024-10-31 21:58:18,568 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 92 transitions, 1212 flow [2024-10-31 21:58:18,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2024-10-31 21:58:18,569 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:18,569 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:18,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-31 21:58:18,569 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 21:58:18,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:18,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1319075840, now seen corresponding path program 4 times [2024-10-31 21:58:18,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:18,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434097322] [2024-10-31 21:58:18,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:18,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:18,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:18,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:18,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:18,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434097322] [2024-10-31 21:58:18,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434097322] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:18,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:18,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 21:58:18,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397960865] [2024-10-31 21:58:18,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:18,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:58:18,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:18,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:58:18,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:58:18,620 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-10-31 21:58:18,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 92 transitions, 1212 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2024-10-31 21:58:18,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:18,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-10-31 21:58:18,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:18,842 INFO L124 PetriNetUnfolderBase]: 300/610 cut-off events. [2024-10-31 21:58:18,842 INFO L125 PetriNetUnfolderBase]: For 5279/5281 co-relation queries the response was YES. [2024-10-31 21:58:18,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3258 conditions, 610 events. 300/610 cut-off events. For 5279/5281 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3051 event pairs, 55 based on Foata normal form. 12/621 useless extension candidates. Maximal degree in co-relation 2398. Up to 227 conditions per place. [2024-10-31 21:58:18,849 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 65 selfloop transitions, 32 changer transitions 3/114 dead transitions. [2024-10-31 21:58:18,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 114 transitions, 1564 flow [2024-10-31 21:58:18,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 21:58:18,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 21:58:18,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-10-31 21:58:18,851 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5194805194805194 [2024-10-31 21:58:18,851 INFO L175 Difference]: Start difference. First operand has 97 places, 92 transitions, 1212 flow. Second operand 7 states and 80 transitions. [2024-10-31 21:58:18,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 114 transitions, 1564 flow [2024-10-31 21:58:18,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 114 transitions, 1544 flow, removed 10 selfloop flow, removed 0 redundant places. [2024-10-31 21:58:18,872 INFO L231 Difference]: Finished difference. Result has 104 places, 92 transitions, 1266 flow [2024-10-31 21:58:18,873 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1151, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1266, PETRI_PLACES=104, PETRI_TRANSITIONS=92} [2024-10-31 21:58:18,876 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 80 predicate places. [2024-10-31 21:58:18,877 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 92 transitions, 1266 flow [2024-10-31 21:58:18,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2024-10-31 21:58:18,877 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:18,877 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:18,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-10-31 21:58:18,877 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 21:58:18,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:18,878 INFO L85 PathProgramCache]: Analyzing trace with hash 117185711, now seen corresponding path program 5 times [2024-10-31 21:58:18,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:18,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14776217] [2024-10-31 21:58:18,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:18,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:18,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:18,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:18,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14776217] [2024-10-31 21:58:18,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14776217] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:18,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:18,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 21:58:18,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335301312] [2024-10-31 21:58:18,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:18,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:58:18,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:18,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:58:18,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:58:18,939 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-10-31 21:58:18,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 92 transitions, 1266 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2024-10-31 21:58:18,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:18,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-10-31 21:58:18,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:19,168 INFO L124 PetriNetUnfolderBase]: 255/521 cut-off events. [2024-10-31 21:58:19,169 INFO L125 PetriNetUnfolderBase]: For 4748/4748 co-relation queries the response was YES. [2024-10-31 21:58:19,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2887 conditions, 521 events. 255/521 cut-off events. For 4748/4748 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2459 event pairs, 25 based on Foata normal form. 14/533 useless extension candidates. Maximal degree in co-relation 2446. Up to 159 conditions per place. [2024-10-31 21:58:19,179 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 68 selfloop transitions, 22 changer transitions 3/106 dead transitions. [2024-10-31 21:58:19,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 106 transitions, 1507 flow [2024-10-31 21:58:19,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 21:58:19,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 21:58:19,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 72 transitions. [2024-10-31 21:58:19,184 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-10-31 21:58:19,184 INFO L175 Difference]: Start difference. First operand has 104 places, 92 transitions, 1266 flow. Second operand 6 states and 72 transitions. [2024-10-31 21:58:19,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 106 transitions, 1507 flow [2024-10-31 21:58:19,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 106 transitions, 1438 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-10-31 21:58:19,206 INFO L231 Difference]: Finished difference. Result has 105 places, 83 transitions, 1101 flow [2024-10-31 21:58:19,206 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1109, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1101, PETRI_PLACES=105, PETRI_TRANSITIONS=83} [2024-10-31 21:58:19,209 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 81 predicate places. [2024-10-31 21:58:19,210 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 83 transitions, 1101 flow [2024-10-31 21:58:19,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2024-10-31 21:58:19,210 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:19,210 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:19,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-10-31 21:58:19,212 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 21:58:19,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:19,213 INFO L85 PathProgramCache]: Analyzing trace with hash 629251502, now seen corresponding path program 5 times [2024-10-31 21:58:19,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:19,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060449726] [2024-10-31 21:58:19,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:19,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:19,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:19,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:19,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:19,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060449726] [2024-10-31 21:58:19,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060449726] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:19,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:19,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 21:58:19,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664535680] [2024-10-31 21:58:19,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:19,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:58:19,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:19,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:58:19,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:58:19,280 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-10-31 21:58:19,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 83 transitions, 1101 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2024-10-31 21:58:19,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:19,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-10-31 21:58:19,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:19,527 INFO L124 PetriNetUnfolderBase]: 225/445 cut-off events. [2024-10-31 21:58:19,528 INFO L125 PetriNetUnfolderBase]: For 4400/4400 co-relation queries the response was YES. [2024-10-31 21:58:19,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2543 conditions, 445 events. 225/445 cut-off events. For 4400/4400 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1936 event pairs, 40 based on Foata normal form. 6/451 useless extension candidates. Maximal degree in co-relation 2137. Up to 146 conditions per place. [2024-10-31 21:58:19,536 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 61 selfloop transitions, 27 changer transitions 2/103 dead transitions. [2024-10-31 21:58:19,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 103 transitions, 1373 flow [2024-10-31 21:58:19,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 21:58:19,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 21:58:19,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-10-31 21:58:19,539 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5170454545454546 [2024-10-31 21:58:19,539 INFO L175 Difference]: Start difference. First operand has 105 places, 83 transitions, 1101 flow. Second operand 8 states and 91 transitions. [2024-10-31 21:58:19,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 103 transitions, 1373 flow [2024-10-31 21:58:19,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 103 transitions, 1298 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-10-31 21:58:19,560 INFO L231 Difference]: Finished difference. Result has 102 places, 78 transitions, 1013 flow [2024-10-31 21:58:19,561 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=976, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1013, PETRI_PLACES=102, PETRI_TRANSITIONS=78} [2024-10-31 21:58:19,561 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 78 predicate places. [2024-10-31 21:58:19,561 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 78 transitions, 1013 flow [2024-10-31 21:58:19,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2024-10-31 21:58:19,562 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:19,562 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:19,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-10-31 21:58:19,562 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 21:58:19,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:19,562 INFO L85 PathProgramCache]: Analyzing trace with hash 690484512, now seen corresponding path program 1 times [2024-10-31 21:58:19,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:19,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203219761] [2024-10-31 21:58:19,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:19,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:19,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:19,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:19,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:19,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203219761] [2024-10-31 21:58:19,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203219761] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:58:19,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139583833] [2024-10-31 21:58:19,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:19,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:19,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:19,771 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:58:19,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 21:58:19,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:19,838 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-31 21:58:19,841 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:20,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:20,061 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:58:20,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:20,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139583833] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:58:20,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:58:20,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-10-31 21:58:20,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380043344] [2024-10-31 21:58:20,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:58:20,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-31 21:58:20,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:20,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-31 21:58:20,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2024-10-31 21:58:20,576 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-31 21:58:20,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 78 transitions, 1013 flow. Second operand has 23 states, 23 states have (on average 4.695652173913044) internal successors, (108), 23 states have internal predecessors, (108), 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) [2024-10-31 21:58:20,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:20,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-31 21:58:20,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:22,721 INFO L124 PetriNetUnfolderBase]: 677/1270 cut-off events. [2024-10-31 21:58:22,722 INFO L125 PetriNetUnfolderBase]: For 9664/9664 co-relation queries the response was YES. [2024-10-31 21:58:22,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6314 conditions, 1270 events. 677/1270 cut-off events. For 9664/9664 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6775 event pairs, 39 based on Foata normal form. 2/1272 useless extension candidates. Maximal degree in co-relation 5740. Up to 236 conditions per place. [2024-10-31 21:58:22,735 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 128 selfloop transitions, 85 changer transitions 64/278 dead transitions. [2024-10-31 21:58:22,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 278 transitions, 3312 flow [2024-10-31 21:58:22,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-10-31 21:58:22,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2024-10-31 21:58:22,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 310 transitions. [2024-10-31 21:58:22,738 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39141414141414144 [2024-10-31 21:58:22,738 INFO L175 Difference]: Start difference. First operand has 102 places, 78 transitions, 1013 flow. Second operand 36 states and 310 transitions. [2024-10-31 21:58:22,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 278 transitions, 3312 flow [2024-10-31 21:58:22,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 278 transitions, 3126 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-10-31 21:58:22,766 INFO L231 Difference]: Finished difference. Result has 150 places, 126 transitions, 1933 flow [2024-10-31 21:58:22,767 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=939, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=1933, PETRI_PLACES=150, PETRI_TRANSITIONS=126} [2024-10-31 21:58:22,767 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 126 predicate places. [2024-10-31 21:58:22,768 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 126 transitions, 1933 flow [2024-10-31 21:58:22,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.695652173913044) internal successors, (108), 23 states have internal predecessors, (108), 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) [2024-10-31 21:58:22,768 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:22,768 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:22,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-31 21:58:22,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:22,973 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 21:58:22,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:22,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1806909290, now seen corresponding path program 2 times [2024-10-31 21:58:22,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:22,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550633158] [2024-10-31 21:58:22,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:22,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:22,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:23,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:23,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:23,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550633158] [2024-10-31 21:58:23,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550633158] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:58:23,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437415030] [2024-10-31 21:58:23,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 21:58:23,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:23,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:23,155 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:58:23,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 21:58:23,215 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 21:58:23,216 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 21:58:23,218 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-31 21:58:23,220 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:23,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:23,394 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:58:23,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:23,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437415030] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:58:23,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:58:23,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-10-31 21:58:23,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290853295] [2024-10-31 21:58:23,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:58:23,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-31 21:58:23,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:23,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-31 21:58:23,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2024-10-31 21:58:23,700 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-31 21:58:23,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 126 transitions, 1933 flow. Second operand has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 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) [2024-10-31 21:58:23,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:23,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-31 21:58:23,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:24,594 INFO L124 PetriNetUnfolderBase]: 749/1478 cut-off events. [2024-10-31 21:58:24,594 INFO L125 PetriNetUnfolderBase]: For 12704/12704 co-relation queries the response was YES. [2024-10-31 21:58:24,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7669 conditions, 1478 events. 749/1478 cut-off events. For 12704/12704 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 8649 event pairs, 98 based on Foata normal form. 3/1481 useless extension candidates. Maximal degree in co-relation 7571. Up to 612 conditions per place. [2024-10-31 21:58:24,609 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 101 selfloop transitions, 97 changer transitions 16/215 dead transitions. [2024-10-31 21:58:24,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 215 transitions, 3317 flow [2024-10-31 21:58:24,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-31 21:58:24,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-31 21:58:24,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 128 transitions. [2024-10-31 21:58:24,610 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4155844155844156 [2024-10-31 21:58:24,610 INFO L175 Difference]: Start difference. First operand has 150 places, 126 transitions, 1933 flow. Second operand 14 states and 128 transitions. [2024-10-31 21:58:24,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 215 transitions, 3317 flow [2024-10-31 21:58:24,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 215 transitions, 2789 flow, removed 182 selfloop flow, removed 17 redundant places. [2024-10-31 21:58:24,673 INFO L231 Difference]: Finished difference. Result has 140 places, 158 transitions, 2233 flow [2024-10-31 21:58:24,674 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1580, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2233, PETRI_PLACES=140, PETRI_TRANSITIONS=158} [2024-10-31 21:58:24,674 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 116 predicate places. [2024-10-31 21:58:24,674 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 158 transitions, 2233 flow [2024-10-31 21:58:24,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 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) [2024-10-31 21:58:24,675 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:24,675 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:24,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 21:58:24,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:24,879 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 21:58:24,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:24,879 INFO L85 PathProgramCache]: Analyzing trace with hash -818732736, now seen corresponding path program 3 times [2024-10-31 21:58:24,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:24,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528229141] [2024-10-31 21:58:24,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:24,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:24,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:25,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:25,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:25,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528229141] [2024-10-31 21:58:25,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528229141] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:58:25,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221943379] [2024-10-31 21:58:25,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-31 21:58:25,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:25,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:25,097 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:58:25,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 21:58:25,153 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-31 21:58:25,153 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 21:58:25,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-31 21:58:25,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:25,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:25,336 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:58:25,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:25,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221943379] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:58:25,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:58:25,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-10-31 21:58:25,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652805620] [2024-10-31 21:58:25,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:58:25,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-31 21:58:25,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:25,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-31 21:58:25,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2024-10-31 21:58:25,616 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-31 21:58:25,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 158 transitions, 2233 flow. Second operand has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 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) [2024-10-31 21:58:25,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:25,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-31 21:58:25,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:26,623 INFO L124 PetriNetUnfolderBase]: 892/1784 cut-off events. [2024-10-31 21:58:26,623 INFO L125 PetriNetUnfolderBase]: For 13581/13581 co-relation queries the response was YES. [2024-10-31 21:58:26,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8693 conditions, 1784 events. 892/1784 cut-off events. For 13581/13581 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 11191 event pairs, 108 based on Foata normal form. 4/1788 useless extension candidates. Maximal degree in co-relation 8549. Up to 584 conditions per place. [2024-10-31 21:58:26,640 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 85 selfloop transitions, 151 changer transitions 12/249 dead transitions. [2024-10-31 21:58:26,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 249 transitions, 3716 flow [2024-10-31 21:58:26,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-31 21:58:26,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-31 21:58:26,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 147 transitions. [2024-10-31 21:58:26,642 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.393048128342246 [2024-10-31 21:58:26,643 INFO L175 Difference]: Start difference. First operand has 140 places, 158 transitions, 2233 flow. Second operand 17 states and 147 transitions. [2024-10-31 21:58:26,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 249 transitions, 3716 flow [2024-10-31 21:58:26,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 249 transitions, 3611 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-10-31 21:58:26,711 INFO L231 Difference]: Finished difference. Result has 155 places, 202 transitions, 3291 flow [2024-10-31 21:58:26,711 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2152, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3291, PETRI_PLACES=155, PETRI_TRANSITIONS=202} [2024-10-31 21:58:26,712 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 131 predicate places. [2024-10-31 21:58:26,712 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 202 transitions, 3291 flow [2024-10-31 21:58:26,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 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) [2024-10-31 21:58:26,713 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:26,713 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:26,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-31 21:58:26,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-10-31 21:58:26,917 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 21:58:26,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:26,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1897792964, now seen corresponding path program 4 times [2024-10-31 21:58:26,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:26,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142661694] [2024-10-31 21:58:26,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:26,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:27,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:27,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:27,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142661694] [2024-10-31 21:58:27,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142661694] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:58:27,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606940575] [2024-10-31 21:58:27,096 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-31 21:58:27,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:27,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:27,098 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:58:27,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 21:58:27,157 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-31 21:58:27,157 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 21:58:27,158 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-31 21:58:27,160 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:27,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:27,402 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:58:27,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:27,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606940575] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:58:27,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:58:27,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-10-31 21:58:27,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19493923] [2024-10-31 21:58:27,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:58:27,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-31 21:58:27,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:27,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-31 21:58:27,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2024-10-31 21:58:27,773 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-31 21:58:27,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 202 transitions, 3291 flow. Second operand has 23 states, 23 states have (on average 4.521739130434782) internal successors, (104), 23 states have internal predecessors, (104), 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) [2024-10-31 21:58:27,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:27,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-31 21:58:27,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:58:28,914 INFO L124 PetriNetUnfolderBase]: 870/1736 cut-off events. [2024-10-31 21:58:28,915 INFO L125 PetriNetUnfolderBase]: For 16662/16662 co-relation queries the response was YES. [2024-10-31 21:58:28,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9495 conditions, 1736 events. 870/1736 cut-off events. For 16662/16662 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 10747 event pairs, 94 based on Foata normal form. 4/1740 useless extension candidates. Maximal degree in co-relation 9355. Up to 590 conditions per place. [2024-10-31 21:58:28,930 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 87 selfloop transitions, 144 changer transitions 17/249 dead transitions. [2024-10-31 21:58:28,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 249 transitions, 4113 flow [2024-10-31 21:58:28,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-31 21:58:28,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-31 21:58:28,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 147 transitions. [2024-10-31 21:58:28,932 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.393048128342246 [2024-10-31 21:58:28,932 INFO L175 Difference]: Start difference. First operand has 155 places, 202 transitions, 3291 flow. Second operand 17 states and 147 transitions. [2024-10-31 21:58:28,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 249 transitions, 4113 flow [2024-10-31 21:58:29,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 249 transitions, 3918 flow, removed 78 selfloop flow, removed 4 redundant places. [2024-10-31 21:58:29,030 INFO L231 Difference]: Finished difference. Result has 168 places, 199 transitions, 3335 flow [2024-10-31 21:58:29,030 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3098, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3335, PETRI_PLACES=168, PETRI_TRANSITIONS=199} [2024-10-31 21:58:29,031 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 144 predicate places. [2024-10-31 21:58:29,031 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 199 transitions, 3335 flow [2024-10-31 21:58:29,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.521739130434782) internal successors, (104), 23 states have internal predecessors, (104), 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) [2024-10-31 21:58:29,031 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:58:29,032 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:29,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-31 21:58:29,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-10-31 21:58:29,236 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 21:58:29,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:29,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1558107788, now seen corresponding path program 5 times [2024-10-31 21:58:29,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:29,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557494936] [2024-10-31 21:58:29,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:29,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:29,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:29,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:29,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:29,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557494936] [2024-10-31 21:58:29,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557494936] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:58:29,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756023816] [2024-10-31 21:58:29,398 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-31 21:58:29,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:29,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:29,400 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:58:29,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6ef7c1e-4901-45b5-863a-6aa501db759b/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-31 21:58:29,456 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 21:58:29,456 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 21:58:29,457 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-31 21:58:29,458 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:29,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:29,584 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 21:58:29,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756023816] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:29,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 21:58:29,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 15 [2024-10-31 21:58:29,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479338708] [2024-10-31 21:58:29,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:29,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 21:58:29,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:29,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 21:58:29,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-10-31 21:58:29,591 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-10-31 21:58:29,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 199 transitions, 3335 flow. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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) [2024-10-31 21:58:29,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:58:29,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-10-31 21:58:29,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand