./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_fb042d47-7dff-4ffa-a3bf-4d59bb168a20/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb042d47-7dff-4ffa-a3bf-4d59bb168a20/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb042d47-7dff-4ffa-a3bf-4d59bb168a20/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb042d47-7dff-4ffa-a3bf-4d59bb168a20/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb042d47-7dff-4ffa-a3bf-4d59bb168a20/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb042d47-7dff-4ffa-a3bf-4d59bb168a20/bin/uautomizer-verify-BQ2R08f2Ya --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 f044966ade6b1d79627a5dcb577ad24e14a4ae2ab2467e458af5fa83aa6cd521 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:55:29,464 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:55:29,530 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb042d47-7dff-4ffa-a3bf-4d59bb168a20/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 00:55:29,536 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:55:29,536 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:55:29,573 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:55:29,573 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:55:29,574 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:55:29,575 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:55:29,575 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:55:29,576 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:55:29,576 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:55:29,577 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:55:29,578 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:55:29,578 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:55:29,579 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:55:29,579 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:55:29,580 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:55:29,580 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:55:29,581 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:55:29,581 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:55:29,582 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:55:29,582 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:55:29,604 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:55:29,604 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:55:29,605 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:55:29,605 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:55:29,606 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:55:29,606 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:55:29,607 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:55:29,607 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:55:29,607 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:55:29,608 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:55:29,608 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:55:29,608 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:55:29,608 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:55:29,608 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:55:29,609 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:55:29,609 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:55:29,609 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:55:29,609 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:55:29,609 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:55:29,610 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_fb042d47-7dff-4ffa-a3bf-4d59bb168a20/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb042d47-7dff-4ffa-a3bf-4d59bb168a20/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f044966ade6b1d79627a5dcb577ad24e14a4ae2ab2467e458af5fa83aa6cd521 [2023-11-29 00:55:29,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:55:29,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:55:29,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:55:29,856 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:55:29,856 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:55:29,858 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb042d47-7dff-4ffa-a3bf-4d59bb168a20/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c [2023-11-29 00:55:32,629 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:55:32,815 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:55:32,816 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb042d47-7dff-4ffa-a3bf-4d59bb168a20/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c [2023-11-29 00:55:32,822 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb042d47-7dff-4ffa-a3bf-4d59bb168a20/bin/uautomizer-verify-BQ2R08f2Ya/data/50e58bec0/88931551b5d941e09e9b4d4f70ac0f2b/FLAG54e83cab5 [2023-11-29 00:55:32,838 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb042d47-7dff-4ffa-a3bf-4d59bb168a20/bin/uautomizer-verify-BQ2R08f2Ya/data/50e58bec0/88931551b5d941e09e9b4d4f70ac0f2b [2023-11-29 00:55:32,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:55:32,841 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:55:32,842 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:55:32,842 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:55:32,847 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:55:32,848 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:55:32" (1/1) ... [2023-11-29 00:55:32,849 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4db9731d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:55:32, skipping insertion in model container [2023-11-29 00:55:32,849 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:55:32" (1/1) ... [2023-11-29 00:55:32,877 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:55:33,026 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb042d47-7dff-4ffa-a3bf-4d59bb168a20/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c[4028,4041] [2023-11-29 00:55:33,039 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:55:33,049 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:55:33,076 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb042d47-7dff-4ffa-a3bf-4d59bb168a20/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c[4028,4041] [2023-11-29 00:55:33,078 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:55:33,087 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 00:55:33,087 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 00:55:33,093 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:55:33,094 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:55:33 WrapperNode [2023-11-29 00:55:33,094 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:55:33,095 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:55:33,095 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:55:33,095 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:55:33,102 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:55:33" (1/1) ... [2023-11-29 00:55:33,112 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:55:33" (1/1) ... [2023-11-29 00:55:33,143 INFO L138 Inliner]: procedures = 24, calls = 85, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 251 [2023-11-29 00:55:33,143 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:55:33,144 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:55:33,144 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:55:33,145 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:55:33,157 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:55:33" (1/1) ... [2023-11-29 00:55:33,157 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:55:33" (1/1) ... [2023-11-29 00:55:33,161 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:55:33" (1/1) ... [2023-11-29 00:55:33,180 INFO L175 MemorySlicer]: Split 12 memory accesses to 6 slices as follows [2, 2, 2, 2, 2, 2]. 17 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 5 writes are split as follows [0, 1, 1, 1, 1, 1]. [2023-11-29 00:55:33,181 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:55:33" (1/1) ... [2023-11-29 00:55:33,181 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:55:33" (1/1) ... [2023-11-29 00:55:33,190 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:55:33" (1/1) ... [2023-11-29 00:55:33,193 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:55:33" (1/1) ... [2023-11-29 00:55:33,195 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:55:33" (1/1) ... [2023-11-29 00:55:33,198 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:55:33" (1/1) ... [2023-11-29 00:55:33,202 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:55:33,203 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:55:33,203 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:55:33,203 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:55:33,204 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:55:33" (1/1) ... [2023-11-29 00:55:33,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:55:33,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb042d47-7dff-4ffa-a3bf-4d59bb168a20/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:55:33,234 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb042d47-7dff-4ffa-a3bf-4d59bb168a20/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:55:33,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb042d47-7dff-4ffa-a3bf-4d59bb168a20/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:55:33,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:55:33,284 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 00:55:33,285 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 00:55:33,285 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 00:55:33,285 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 00:55:33,285 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 00:55:33,287 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 00:55:33,288 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-29 00:55:33,288 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-29 00:55:33,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:55:33,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 00:55:33,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 00:55:33,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 00:55:33,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 00:55:33,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 00:55:33,290 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-29 00:55:33,290 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-29 00:55:33,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 00:55:33,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 00:55:33,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 00:55:33,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 00:55:33,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 00:55:33,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 00:55:33,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-29 00:55:33,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 00:55:33,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 00:55:33,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:55:33,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:55:33,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 00:55:33,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 00:55:33,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 00:55:33,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 00:55:33,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 00:55:33,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-29 00:55:33,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 00:55:33,297 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 00:55:33,443 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:55:33,445 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:55:33,714 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:55:34,004 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:55:34,004 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 00:55:34,005 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:55:34 BoogieIcfgContainer [2023-11-29 00:55:34,005 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:55:34,008 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:55:34,008 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:55:34,011 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:55:34,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:55:32" (1/3) ... [2023-11-29 00:55:34,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c3fb9f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:55:34, skipping insertion in model container [2023-11-29 00:55:34,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:55:33" (2/3) ... [2023-11-29 00:55:34,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c3fb9f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:55:34, skipping insertion in model container [2023-11-29 00:55:34,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:55:34" (3/3) ... [2023-11-29 00:55:34,014 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-5.wvr.c [2023-11-29 00:55:34,023 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 00:55:34,034 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:55:34,034 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 00:55:34,034 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 00:55:34,098 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-11-29 00:55:34,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 59 transitions, 153 flow [2023-11-29 00:55:34,182 INFO L124 PetriNetUnfolderBase]: 0/54 cut-off events. [2023-11-29 00:55:34,183 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-29 00:55:34,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 54 events. 0/54 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 99 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-29 00:55:34,184 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 59 transitions, 153 flow [2023-11-29 00:55:34,188 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 53 transitions, 136 flow [2023-11-29 00:55:34,198 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:55:34,204 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2f66f7b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:55:34,205 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-29 00:55:34,225 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 00:55:34,225 INFO L124 PetriNetUnfolderBase]: 0/52 cut-off events. [2023-11-29 00:55:34,225 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-29 00:55:34,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:55:34,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:55:34,227 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-29 00:55:34,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:55:34,231 INFO L85 PathProgramCache]: Analyzing trace with hash 772612808, now seen corresponding path program 1 times [2023-11-29 00:55:34,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:55:34,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933824706] [2023-11-29 00:55:34,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:55:34,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:55:34,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:55:35,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:55:35,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:55:35,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933824706] [2023-11-29 00:55:35,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933824706] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:55:35,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:55:35,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:55:35,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11687005] [2023-11-29 00:55:35,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:55:35,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:55:35,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:55:35,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:55:35,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:55:35,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 59 [2023-11-29 00:55:35,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 53 transitions, 136 flow. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:35,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:55:35,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 59 [2023-11-29 00:55:35,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:55:46,981 INFO L124 PetriNetUnfolderBase]: 137327/176709 cut-off events. [2023-11-29 00:55:46,981 INFO L125 PetriNetUnfolderBase]: For 8146/8146 co-relation queries the response was YES. [2023-11-29 00:55:47,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 361752 conditions, 176709 events. 137327/176709 cut-off events. For 8146/8146 co-relation queries the response was YES. Maximal size of possible extension queue 4696. Compared 1069240 event pairs, 35738 based on Foata normal form. 1/176620 useless extension candidates. Maximal degree in co-relation 324160. Up to 70875 conditions per place. [2023-11-29 00:55:48,042 INFO L140 encePairwiseOnDemand]: 51/59 looper letters, 114 selfloop transitions, 11 changer transitions 39/170 dead transitions. [2023-11-29 00:55:48,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 170 transitions, 752 flow [2023-11-29 00:55:48,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:55:48,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 00:55:48,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 231 transitions. [2023-11-29 00:55:48,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.652542372881356 [2023-11-29 00:55:48,059 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 231 transitions. [2023-11-29 00:55:48,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 231 transitions. [2023-11-29 00:55:48,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:55:48,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 231 transitions. [2023-11-29 00:55:48,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 38.5) internal successors, (231), 6 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:48,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 59.0) internal successors, (413), 7 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:48,077 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 59.0) internal successors, (413), 7 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:48,079 INFO L175 Difference]: Start difference. First operand has 69 places, 53 transitions, 136 flow. Second operand 6 states and 231 transitions. [2023-11-29 00:55:48,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 170 transitions, 752 flow [2023-11-29 00:55:49,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 170 transitions, 696 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-11-29 00:55:49,775 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 187 flow [2023-11-29 00:55:49,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=187, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2023-11-29 00:55:49,781 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -2 predicate places. [2023-11-29 00:55:49,781 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 187 flow [2023-11-29 00:55:49,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:49,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:55:49,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:55:49,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:55:49,782 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-29 00:55:49,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:55:49,783 INFO L85 PathProgramCache]: Analyzing trace with hash -923941920, now seen corresponding path program 2 times [2023-11-29 00:55:49,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:55:49,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266947902] [2023-11-29 00:55:49,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:55:49,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:55:49,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:55:50,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:55:50,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:55:50,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266947902] [2023-11-29 00:55:50,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266947902] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:55:50,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:55:50,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:55:50,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421493941] [2023-11-29 00:55:50,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:55:50,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:55:50,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:55:50,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:55:50,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:55:50,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2023-11-29 00:55:50,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 187 flow. Second operand has 8 states, 8 states have (on average 22.125) internal successors, (177), 8 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:50,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:55:50,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2023-11-29 00:55:50,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:55:57,543 INFO L124 PetriNetUnfolderBase]: 70989/100401 cut-off events. [2023-11-29 00:55:57,543 INFO L125 PetriNetUnfolderBase]: For 11835/18539 co-relation queries the response was YES. [2023-11-29 00:55:57,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215665 conditions, 100401 events. 70989/100401 cut-off events. For 11835/18539 co-relation queries the response was YES. Maximal size of possible extension queue 3841. Compared 732022 event pairs, 13064 based on Foata normal form. 32/94836 useless extension candidates. Maximal degree in co-relation 215651. Up to 28769 conditions per place. [2023-11-29 00:55:58,299 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 138 selfloop transitions, 51 changer transitions 1/211 dead transitions. [2023-11-29 00:55:58,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 211 transitions, 892 flow [2023-11-29 00:55:58,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:55:58,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 00:55:58,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 327 transitions. [2023-11-29 00:55:58,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6927966101694916 [2023-11-29 00:55:58,304 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 327 transitions. [2023-11-29 00:55:58,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 327 transitions. [2023-11-29 00:55:58,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:55:58,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 327 transitions. [2023-11-29 00:55:58,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 40.875) internal successors, (327), 8 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:58,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 59.0) internal successors, (531), 9 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:58,310 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 59.0) internal successors, (531), 9 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:58,310 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 187 flow. Second operand 8 states and 327 transitions. [2023-11-29 00:55:58,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 211 transitions, 892 flow [2023-11-29 00:55:58,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 211 transitions, 882 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-29 00:55:58,321 INFO L231 Difference]: Finished difference. Result has 72 places, 106 transitions, 384 flow [2023-11-29 00:55:58,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=384, PETRI_PLACES=72, PETRI_TRANSITIONS=106} [2023-11-29 00:55:58,323 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 3 predicate places. [2023-11-29 00:55:58,323 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 106 transitions, 384 flow [2023-11-29 00:55:58,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.125) internal successors, (177), 8 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:58,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:55:58,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:55:58,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 00:55:58,324 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-29 00:55:58,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:55:58,325 INFO L85 PathProgramCache]: Analyzing trace with hash 115972344, now seen corresponding path program 3 times [2023-11-29 00:55:58,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:55:58,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604746187] [2023-11-29 00:55:58,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:55:58,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:55:58,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:55:59,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:55:59,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:55:59,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604746187] [2023-11-29 00:55:59,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604746187] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:55:59,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:55:59,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:55:59,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482857427] [2023-11-29 00:55:59,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:55:59,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:55:59,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:55:59,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:55:59,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:55:59,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 59 [2023-11-29 00:55:59,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 106 transitions, 384 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:59,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:55:59,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 59 [2023-11-29 00:55:59,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:56:14,663 INFO L124 PetriNetUnfolderBase]: 182723/237011 cut-off events. [2023-11-29 00:56:14,664 INFO L125 PetriNetUnfolderBase]: For 141631/141631 co-relation queries the response was YES. [2023-11-29 00:56:15,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 634645 conditions, 237011 events. 182723/237011 cut-off events. For 141631/141631 co-relation queries the response was YES. Maximal size of possible extension queue 5900. Compared 1475908 event pairs, 50563 based on Foata normal form. 2/236859 useless extension candidates. Maximal degree in co-relation 179893. Up to 120319 conditions per place. [2023-11-29 00:56:15,656 INFO L140 encePairwiseOnDemand]: 51/59 looper letters, 259 selfloop transitions, 15 changer transitions 37/317 dead transitions. [2023-11-29 00:56:15,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 317 transitions, 1777 flow [2023-11-29 00:56:15,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:56:15,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 00:56:15,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 227 transitions. [2023-11-29 00:56:15,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6412429378531074 [2023-11-29 00:56:15,658 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 227 transitions. [2023-11-29 00:56:15,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 227 transitions. [2023-11-29 00:56:15,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:56:15,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 227 transitions. [2023-11-29 00:56:15,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 37.833333333333336) internal successors, (227), 6 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:15,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 59.0) internal successors, (413), 7 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:15,661 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 59.0) internal successors, (413), 7 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:15,661 INFO L175 Difference]: Start difference. First operand has 72 places, 106 transitions, 384 flow. Second operand 6 states and 227 transitions. [2023-11-29 00:56:15,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 317 transitions, 1777 flow [2023-11-29 00:56:16,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 317 transitions, 1766 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:56:16,782 INFO L231 Difference]: Finished difference. Result has 79 places, 110 transitions, 468 flow [2023-11-29 00:56:16,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=468, PETRI_PLACES=79, PETRI_TRANSITIONS=110} [2023-11-29 00:56:16,783 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 10 predicate places. [2023-11-29 00:56:16,783 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 110 transitions, 468 flow [2023-11-29 00:56:16,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:16,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:56:16,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:56:16,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 00:56:16,784 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-29 00:56:16,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:56:16,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1965243272, now seen corresponding path program 4 times [2023-11-29 00:56:16,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:56:16,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031079332] [2023-11-29 00:56:16,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:16,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:56:16,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:16,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:56:16,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:56:16,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031079332] [2023-11-29 00:56:16,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031079332] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:56:16,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:56:16,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:56:16,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065881006] [2023-11-29 00:56:16,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:56:16,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:56:16,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:56:16,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:56:16,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:56:16,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2023-11-29 00:56:16,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 110 transitions, 468 flow. Second operand has 8 states, 8 states have (on average 22.125) internal successors, (177), 8 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:16,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:56:16,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2023-11-29 00:56:16,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:56:24,172 INFO L124 PetriNetUnfolderBase]: 70904/99683 cut-off events. [2023-11-29 00:56:24,173 INFO L125 PetriNetUnfolderBase]: For 86411/107345 co-relation queries the response was YES. [2023-11-29 00:56:24,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278947 conditions, 99683 events. 70904/99683 cut-off events. For 86411/107345 co-relation queries the response was YES. Maximal size of possible extension queue 3773. Compared 718572 event pairs, 11883 based on Foata normal form. 672/95632 useless extension candidates. Maximal degree in co-relation 180543. Up to 28759 conditions per place. [2023-11-29 00:56:24,910 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 138 selfloop transitions, 55 changer transitions 1/219 dead transitions. [2023-11-29 00:56:24,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 219 transitions, 1119 flow [2023-11-29 00:56:24,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:56:24,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 00:56:24,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 327 transitions. [2023-11-29 00:56:24,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6927966101694916 [2023-11-29 00:56:24,912 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 327 transitions. [2023-11-29 00:56:24,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 327 transitions. [2023-11-29 00:56:24,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:56:24,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 327 transitions. [2023-11-29 00:56:24,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 40.875) internal successors, (327), 8 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:24,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 59.0) internal successors, (531), 9 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:24,915 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 59.0) internal successors, (531), 9 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:24,915 INFO L175 Difference]: Start difference. First operand has 79 places, 110 transitions, 468 flow. Second operand 8 states and 327 transitions. [2023-11-29 00:56:24,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 219 transitions, 1119 flow [2023-11-29 00:56:25,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 219 transitions, 1055 flow, removed 14 selfloop flow, removed 6 redundant places. [2023-11-29 00:56:25,079 INFO L231 Difference]: Finished difference. Result has 81 places, 114 transitions, 539 flow [2023-11-29 00:56:25,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=539, PETRI_PLACES=81, PETRI_TRANSITIONS=114} [2023-11-29 00:56:25,081 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 12 predicate places. [2023-11-29 00:56:25,081 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 114 transitions, 539 flow [2023-11-29 00:56:25,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.125) internal successors, (177), 8 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:25,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:56:25,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:56:25,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 00:56:25,082 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-29 00:56:25,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:56:25,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1616848740, now seen corresponding path program 5 times [2023-11-29 00:56:25,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:56:25,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355396405] [2023-11-29 00:56:25,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:25,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:56:25,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:25,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:56:25,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:56:25,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355396405] [2023-11-29 00:56:25,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355396405] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:56:25,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:56:25,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:56:25,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030407528] [2023-11-29 00:56:25,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:56:25,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:56:25,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:56:25,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:56:25,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:56:25,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2023-11-29 00:56:25,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 114 transitions, 539 flow. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:25,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:56:25,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2023-11-29 00:56:25,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:56:40,642 INFO L124 PetriNetUnfolderBase]: 141891/198718 cut-off events. [2023-11-29 00:56:40,642 INFO L125 PetriNetUnfolderBase]: For 193306/204727 co-relation queries the response was YES. [2023-11-29 00:56:41,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584508 conditions, 198718 events. 141891/198718 cut-off events. For 193306/204727 co-relation queries the response was YES. Maximal size of possible extension queue 7351. Compared 1522037 event pairs, 32656 based on Foata normal form. 2109/196112 useless extension candidates. Maximal degree in co-relation 192432. Up to 78404 conditions per place. [2023-11-29 00:56:42,051 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 156 selfloop transitions, 81 changer transitions 0/262 dead transitions. [2023-11-29 00:56:42,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 262 transitions, 1673 flow [2023-11-29 00:56:42,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:56:42,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:56:42,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 218 transitions. [2023-11-29 00:56:42,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7389830508474576 [2023-11-29 00:56:42,053 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 218 transitions. [2023-11-29 00:56:42,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 218 transitions. [2023-11-29 00:56:42,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:56:42,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 218 transitions. [2023-11-29 00:56:42,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 43.6) internal successors, (218), 5 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:42,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 59.0) internal successors, (354), 6 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:42,056 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 59.0) internal successors, (354), 6 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:42,056 INFO L175 Difference]: Start difference. First operand has 81 places, 114 transitions, 539 flow. Second operand 5 states and 218 transitions. [2023-11-29 00:56:42,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 262 transitions, 1673 flow [2023-11-29 00:56:43,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 262 transitions, 1437 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 00:56:43,517 INFO L231 Difference]: Finished difference. Result has 82 places, 179 transitions, 1055 flow [2023-11-29 00:56:43,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1055, PETRI_PLACES=82, PETRI_TRANSITIONS=179} [2023-11-29 00:56:43,518 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 13 predicate places. [2023-11-29 00:56:43,518 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 179 transitions, 1055 flow [2023-11-29 00:56:43,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:43,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:56:43,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:56:43,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 00:56:43,519 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-29 00:56:43,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:56:43,520 INFO L85 PathProgramCache]: Analyzing trace with hash -737094034, now seen corresponding path program 6 times [2023-11-29 00:56:43,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:56:43,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935974170] [2023-11-29 00:56:43,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:43,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:56:43,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:43,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:56:43,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:56:43,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935974170] [2023-11-29 00:56:43,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935974170] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:56:43,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:56:43,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:56:43,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414175969] [2023-11-29 00:56:43,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:56:43,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:56:43,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:56:43,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:56:43,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:56:43,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2023-11-29 00:56:43,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 179 transitions, 1055 flow. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:43,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:56:43,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2023-11-29 00:56:43,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:57:07,152 INFO L124 PetriNetUnfolderBase]: 193246/271353 cut-off events. [2023-11-29 00:57:07,152 INFO L125 PetriNetUnfolderBase]: For 346361/372343 co-relation queries the response was YES. [2023-11-29 00:57:08,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 841020 conditions, 271353 events. 193246/271353 cut-off events. For 346361/372343 co-relation queries the response was YES. Maximal size of possible extension queue 10649. Compared 2180822 event pairs, 37770 based on Foata normal form. 4348/265390 useless extension candidates. Maximal degree in co-relation 266415. Up to 86900 conditions per place. [2023-11-29 00:57:09,207 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 168 selfloop transitions, 166 changer transitions 0/359 dead transitions. [2023-11-29 00:57:09,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 359 transitions, 2542 flow [2023-11-29 00:57:09,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:57:09,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 00:57:09,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 274 transitions. [2023-11-29 00:57:09,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7740112994350282 [2023-11-29 00:57:09,210 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 274 transitions. [2023-11-29 00:57:09,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 274 transitions. [2023-11-29 00:57:09,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:57:09,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 274 transitions. [2023-11-29 00:57:09,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 45.666666666666664) internal successors, (274), 6 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:09,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 59.0) internal successors, (413), 7 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:09,213 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 59.0) internal successors, (413), 7 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:09,213 INFO L175 Difference]: Start difference. First operand has 82 places, 179 transitions, 1055 flow. Second operand 6 states and 274 transitions. [2023-11-29 00:57:09,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 359 transitions, 2542 flow [2023-11-29 00:57:11,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 359 transitions, 2523 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-11-29 00:57:11,555 INFO L231 Difference]: Finished difference. Result has 88 places, 259 transitions, 2054 flow [2023-11-29 00:57:11,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=1048, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2054, PETRI_PLACES=88, PETRI_TRANSITIONS=259} [2023-11-29 00:57:11,556 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 19 predicate places. [2023-11-29 00:57:11,556 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 259 transitions, 2054 flow [2023-11-29 00:57:11,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:11,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:57:11,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:11,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 00:57:11,557 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-29 00:57:11,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:11,557 INFO L85 PathProgramCache]: Analyzing trace with hash -940733484, now seen corresponding path program 7 times [2023-11-29 00:57:11,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:11,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634353598] [2023-11-29 00:57:11,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:11,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:11,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:11,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:57:11,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:11,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634353598] [2023-11-29 00:57:11,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634353598] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:57:11,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:57:11,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:57:11,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844379461] [2023-11-29 00:57:11,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:57:11,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:57:11,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:11,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:57:11,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:57:11,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2023-11-29 00:57:11,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 259 transitions, 2054 flow. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:11,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:57:11,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2023-11-29 00:57:11,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:57:38,647 INFO L124 PetriNetUnfolderBase]: 192082/273122 cut-off events. [2023-11-29 00:57:38,648 INFO L125 PetriNetUnfolderBase]: For 630396/649258 co-relation queries the response was YES. [2023-11-29 00:57:39,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 947504 conditions, 273122 events. 192082/273122 cut-off events. For 630396/649258 co-relation queries the response was YES. Maximal size of possible extension queue 10657. Compared 2237984 event pairs, 46708 based on Foata normal form. 4604/271700 useless extension candidates. Maximal degree in co-relation 268983. Up to 135961 conditions per place. [2023-11-29 00:57:40,720 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 217 selfloop transitions, 130 changer transitions 0/372 dead transitions. [2023-11-29 00:57:40,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 372 transitions, 3352 flow [2023-11-29 00:57:40,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:57:40,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:57:40,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 220 transitions. [2023-11-29 00:57:40,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7457627118644068 [2023-11-29 00:57:40,722 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 220 transitions. [2023-11-29 00:57:40,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 220 transitions. [2023-11-29 00:57:40,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:57:40,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 220 transitions. [2023-11-29 00:57:40,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:40,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 59.0) internal successors, (354), 6 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:40,724 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 59.0) internal successors, (354), 6 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:40,724 INFO L175 Difference]: Start difference. First operand has 88 places, 259 transitions, 2054 flow. Second operand 5 states and 220 transitions. [2023-11-29 00:57:40,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 372 transitions, 3352 flow [2023-11-29 00:57:45,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 372 transitions, 3332 flow, removed 10 selfloop flow, removed 0 redundant places. [2023-11-29 00:57:45,405 INFO L231 Difference]: Finished difference. Result has 94 places, 289 transitions, 2724 flow [2023-11-29 00:57:45,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=2034, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2724, PETRI_PLACES=94, PETRI_TRANSITIONS=289} [2023-11-29 00:57:45,406 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 25 predicate places. [2023-11-29 00:57:45,406 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 289 transitions, 2724 flow [2023-11-29 00:57:45,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:45,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:57:45,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:57:45,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 00:57:45,407 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-29 00:57:45,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:57:45,407 INFO L85 PathProgramCache]: Analyzing trace with hash -220942716, now seen corresponding path program 8 times [2023-11-29 00:57:45,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:57:45,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115065686] [2023-11-29 00:57:45,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:57:45,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:57:45,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:57:45,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:57:45,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:57:45,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115065686] [2023-11-29 00:57:45,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115065686] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:57:45,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:57:45,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:57:45,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014715538] [2023-11-29 00:57:45,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:57:45,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:57:45,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:57:45,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:57:45,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:57:45,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2023-11-29 00:57:45,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 289 transitions, 2724 flow. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:57:45,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:57:45,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2023-11-29 00:57:45,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:58:14,352 INFO L124 PetriNetUnfolderBase]: 202260/287301 cut-off events. [2023-11-29 00:58:14,352 INFO L125 PetriNetUnfolderBase]: For 870218/899000 co-relation queries the response was YES. [2023-11-29 00:58:15,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1072544 conditions, 287301 events. 202260/287301 cut-off events. For 870218/899000 co-relation queries the response was YES. Maximal size of possible extension queue 11305. Compared 2369457 event pairs, 35444 based on Foata normal form. 6832/283662 useless extension candidates. Maximal degree in co-relation 307933. Up to 91051 conditions per place. [2023-11-29 00:58:16,640 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 163 selfloop transitions, 277 changer transitions 2/467 dead transitions. [2023-11-29 00:58:16,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 467 transitions, 4648 flow [2023-11-29 00:58:16,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:58:16,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:58:16,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 314 transitions. [2023-11-29 00:58:16,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7602905569007264 [2023-11-29 00:58:16,642 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 314 transitions. [2023-11-29 00:58:16,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 314 transitions. [2023-11-29 00:58:16,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:58:16,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 314 transitions. [2023-11-29 00:58:16,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 44.857142857142854) internal successors, (314), 7 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:58:16,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 59.0) internal successors, (472), 8 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:58:16,645 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 59.0) internal successors, (472), 8 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:58:16,645 INFO L175 Difference]: Start difference. First operand has 94 places, 289 transitions, 2724 flow. Second operand 7 states and 314 transitions. [2023-11-29 00:58:16,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 467 transitions, 4648 flow [2023-11-29 00:58:24,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 467 transitions, 4438 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-29 00:58:24,381 INFO L231 Difference]: Finished difference. Result has 99 places, 353 transitions, 3914 flow [2023-11-29 00:58:24,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=2567, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3914, PETRI_PLACES=99, PETRI_TRANSITIONS=353} [2023-11-29 00:58:24,382 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 30 predicate places. [2023-11-29 00:58:24,382 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 353 transitions, 3914 flow [2023-11-29 00:58:24,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:58:24,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:58:24,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:58:24,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 00:58:24,383 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-29 00:58:24,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:58:24,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1885660894, now seen corresponding path program 9 times [2023-11-29 00:58:24,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:58:24,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649365953] [2023-11-29 00:58:24,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:58:24,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:58:24,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:58:24,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:58:24,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:58:24,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649365953] [2023-11-29 00:58:24,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649365953] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:58:24,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:58:24,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:58:24,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160768333] [2023-11-29 00:58:24,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:58:24,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:58:24,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:58:24,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:58:24,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:58:24,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2023-11-29 00:58:24,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 353 transitions, 3914 flow. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:58:24,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:58:24,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2023-11-29 00:58:24,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand