./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-4.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_a0e2f44a-7f96-48e8-a393-37b01857e35c/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2f44a-7f96-48e8-a393-37b01857e35c/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_a0e2f44a-7f96-48e8-a393-37b01857e35c/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2f44a-7f96-48e8-a393-37b01857e35c/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2f44a-7f96-48e8-a393-37b01857e35c/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_a0e2f44a-7f96-48e8-a393-37b01857e35c/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 d87195cdf1d0fd4bcadf67f37be6f46388ea22a2ec77b383d012327e126a2173 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 20:37:59,481 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 20:37:59,543 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2f44a-7f96-48e8-a393-37b01857e35c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-28 20:37:59,547 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 20:37:59,548 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 20:37:59,570 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 20:37:59,570 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 20:37:59,571 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 20:37:59,572 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 20:37:59,572 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 20:37:59,573 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 20:37:59,573 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 20:37:59,574 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 20:37:59,575 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 20:37:59,575 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 20:37:59,576 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 20:37:59,577 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 20:37:59,577 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 20:37:59,578 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 20:37:59,578 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 20:37:59,579 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 20:37:59,579 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 20:37:59,580 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 20:37:59,580 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 20:37:59,581 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 20:37:59,581 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 20:37:59,582 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 20:37:59,582 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 20:37:59,583 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 20:37:59,583 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 20:37:59,584 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 20:37:59,584 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:37:59,584 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 20:37:59,585 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 20:37:59,585 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 20:37:59,585 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 20:37:59,585 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 20:37:59,585 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 20:37:59,586 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 20:37:59,586 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 20:37:59,586 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 20:37:59,586 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 20:37:59,586 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_a0e2f44a-7f96-48e8-a393-37b01857e35c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2f44a-7f96-48e8-a393-37b01857e35c/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d87195cdf1d0fd4bcadf67f37be6f46388ea22a2ec77b383d012327e126a2173 [2023-11-28 20:37:59,803 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 20:37:59,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 20:37:59,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 20:37:59,838 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 20:37:59,839 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 20:37:59,840 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2f44a-7f96-48e8-a393-37b01857e35c/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2023-11-28 20:38:02,688 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 20:38:02,882 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 20:38:02,883 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2f44a-7f96-48e8-a393-37b01857e35c/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2023-11-28 20:38:02,890 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2f44a-7f96-48e8-a393-37b01857e35c/bin/uautomizer-verify-BQ2R08f2Ya/data/d3229006c/4f793be8a2f6453c910779c3de40015c/FLAGfe0c2d80a [2023-11-28 20:38:02,905 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2f44a-7f96-48e8-a393-37b01857e35c/bin/uautomizer-verify-BQ2R08f2Ya/data/d3229006c/4f793be8a2f6453c910779c3de40015c [2023-11-28 20:38:02,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 20:38:02,910 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 20:38:02,911 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 20:38:02,911 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 20:38:02,916 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 20:38:02,916 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:38:02" (1/1) ... [2023-11-28 20:38:02,918 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d7d7ac7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:02, skipping insertion in model container [2023-11-28 20:38:02,918 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:38:02" (1/1) ... [2023-11-28 20:38:02,951 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 20:38:03,117 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_a0e2f44a-7f96-48e8-a393-37b01857e35c/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c[3578,3591] [2023-11-28 20:38:03,123 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:38:03,133 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 20:38:03,161 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_a0e2f44a-7f96-48e8-a393-37b01857e35c/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c[3578,3591] [2023-11-28 20:38:03,162 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:38:03,170 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-28 20:38:03,170 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-28 20:38:03,177 INFO L206 MainTranslator]: Completed translation [2023-11-28 20:38:03,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:03 WrapperNode [2023-11-28 20:38:03,177 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 20:38:03,178 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 20:38:03,179 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 20:38:03,179 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 20:38:03,185 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:03" (1/1) ... [2023-11-28 20:38:03,195 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:03" (1/1) ... [2023-11-28 20:38:03,230 INFO L138 Inliner]: procedures = 23, calls = 70, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 209 [2023-11-28 20:38:03,230 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 20:38:03,231 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 20:38:03,231 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 20:38:03,232 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 20:38:03,242 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:03" (1/1) ... [2023-11-28 20:38:03,242 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:03" (1/1) ... [2023-11-28 20:38:03,246 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:03" (1/1) ... [2023-11-28 20:38:03,267 INFO L175 MemorySlicer]: Split 10 memory accesses to 5 slices as follows [2, 2, 2, 2, 2]. 20 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2023-11-28 20:38:03,268 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:03" (1/1) ... [2023-11-28 20:38:03,268 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:03" (1/1) ... [2023-11-28 20:38:03,277 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:03" (1/1) ... [2023-11-28 20:38:03,280 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:03" (1/1) ... [2023-11-28 20:38:03,282 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:03" (1/1) ... [2023-11-28 20:38:03,284 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:03" (1/1) ... [2023-11-28 20:38:03,288 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 20:38:03,289 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 20:38:03,290 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 20:38:03,290 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 20:38:03,291 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:03" (1/1) ... [2023-11-28 20:38:03,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:38:03,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2f44a-7f96-48e8-a393-37b01857e35c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:38:03,323 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2f44a-7f96-48e8-a393-37b01857e35c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 20:38:03,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2f44a-7f96-48e8-a393-37b01857e35c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 20:38:03,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 20:38:03,354 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-28 20:38:03,354 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-28 20:38:03,354 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-28 20:38:03,354 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-28 20:38:03,354 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-28 20:38:03,354 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-28 20:38:03,354 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-28 20:38:03,355 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-28 20:38:03,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 20:38:03,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-28 20:38:03,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-28 20:38:03,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-28 20:38:03,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-28 20:38:03,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-28 20:38:03,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-28 20:38:03,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-28 20:38:03,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-28 20:38:03,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-28 20:38:03,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-28 20:38:03,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-28 20:38:03,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-28 20:38:03,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 20:38:03,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 20:38:03,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-28 20:38:03,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-28 20:38:03,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-28 20:38:03,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-28 20:38:03,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-28 20:38:03,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-28 20:38:03,359 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-28 20:38:03,478 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 20:38:03,480 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 20:38:03,740 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 20:38:03,988 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 20:38:03,988 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-28 20:38:03,989 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:38:03 BoogieIcfgContainer [2023-11-28 20:38:03,989 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 20:38:03,991 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 20:38:03,991 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 20:38:03,994 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 20:38:03,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:38:02" (1/3) ... [2023-11-28 20:38:03,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29b2a3b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:38:03, skipping insertion in model container [2023-11-28 20:38:03,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:03" (2/3) ... [2023-11-28 20:38:03,996 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29b2a3b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:38:03, skipping insertion in model container [2023-11-28 20:38:03,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:38:03" (3/3) ... [2023-11-28 20:38:03,997 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2023-11-28 20:38:04,005 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-28 20:38:04,014 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 20:38:04,014 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-28 20:38:04,014 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-28 20:38:04,065 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-28 20:38:04,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 48 transitions, 124 flow [2023-11-28 20:38:04,133 INFO L124 PetriNetUnfolderBase]: 0/44 cut-off events. [2023-11-28 20:38:04,134 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-28 20:38:04,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 44 events. 0/44 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 79 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-28 20:38:04,136 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 48 transitions, 124 flow [2023-11-28 20:38:04,140 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 43 transitions, 110 flow [2023-11-28 20:38:04,149 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 20:38:04,156 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;@56ae9d37, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 20:38:04,156 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-28 20:38:04,175 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-28 20:38:04,175 INFO L124 PetriNetUnfolderBase]: 0/42 cut-off events. [2023-11-28 20:38:04,175 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-28 20:38:04,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:38:04,176 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] [2023-11-28 20:38:04,176 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 2 more)] === [2023-11-28 20:38:04,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:04,181 INFO L85 PathProgramCache]: Analyzing trace with hash -14757495, now seen corresponding path program 1 times [2023-11-28 20:38:04,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:04,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579233896] [2023-11-28 20:38:04,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:04,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:05,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:38:05,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:05,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579233896] [2023-11-28 20:38:05,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579233896] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:05,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:05,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 20:38:05,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585707712] [2023-11-28 20:38:05,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:05,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:38:05,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:05,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:38:05,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:38:05,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2023-11-28 20:38:05,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 110 flow. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 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) [2023-11-28 20:38:05,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:38:05,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2023-11-28 20:38:05,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:38:08,059 INFO L124 PetriNetUnfolderBase]: 16907/23295 cut-off events. [2023-11-28 20:38:08,060 INFO L125 PetriNetUnfolderBase]: For 1276/1276 co-relation queries the response was YES. [2023-11-28 20:38:08,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47903 conditions, 23295 events. 16907/23295 cut-off events. For 1276/1276 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 131578 event pairs, 4310 based on Foata normal form. 1/23268 useless extension candidates. Maximal degree in co-relation 42730. Up to 9585 conditions per place. [2023-11-28 20:38:08,203 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 88 selfloop transitions, 9 changer transitions 30/132 dead transitions. [2023-11-28 20:38:08,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 132 transitions, 581 flow [2023-11-28 20:38:08,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:38:08,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 20:38:08,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2023-11-28 20:38:08,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6319444444444444 [2023-11-28 20:38:08,218 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 182 transitions. [2023-11-28 20:38:08,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 182 transitions. [2023-11-28 20:38:08,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:38:08,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 182 transitions. [2023-11-28 20:38:08,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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) [2023-11-28 20:38:08,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 48.0) internal successors, (336), 7 states have internal predecessors, (336), 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) [2023-11-28 20:38:08,230 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 48.0) internal successors, (336), 7 states have internal predecessors, (336), 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) [2023-11-28 20:38:08,232 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 110 flow. Second operand 6 states and 182 transitions. [2023-11-28 20:38:08,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 132 transitions, 581 flow [2023-11-28 20:38:08,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 132 transitions, 539 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-28 20:38:08,313 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 151 flow [2023-11-28 20:38:08,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=151, PETRI_PLACES=56, PETRI_TRANSITIONS=50} [2023-11-28 20:38:08,318 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2023-11-28 20:38:08,318 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 151 flow [2023-11-28 20:38:08,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 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) [2023-11-28 20:38:08,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:38:08,319 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] [2023-11-28 20:38:08,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-28 20:38:08,320 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 2 more)] === [2023-11-28 20:38:08,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:08,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1293729991, now seen corresponding path program 2 times [2023-11-28 20:38:08,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:08,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328858165] [2023-11-28 20:38:08,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:08,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:08,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:08,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:38:08,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:08,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328858165] [2023-11-28 20:38:08,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328858165] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:08,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:08,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-28 20:38:08,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342268956] [2023-11-28 20:38:08,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:08,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 20:38:08,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:08,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:38:08,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:38:08,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2023-11-28 20:38:08,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 151 flow. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 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) [2023-11-28 20:38:08,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:38:08,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2023-11-28 20:38:08,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:38:09,997 INFO L124 PetriNetUnfolderBase]: 9434/14526 cut-off events. [2023-11-28 20:38:09,997 INFO L125 PetriNetUnfolderBase]: For 1782/2244 co-relation queries the response was YES. [2023-11-28 20:38:10,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31122 conditions, 14526 events. 9434/14526 cut-off events. For 1782/2244 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 97073 event pairs, 1985 based on Foata normal form. 16/13920 useless extension candidates. Maximal degree in co-relation 31108. Up to 4304 conditions per place. [2023-11-28 20:38:10,163 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 94 selfloop transitions, 33 changer transitions 1/145 dead transitions. [2023-11-28 20:38:10,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 145 transitions, 615 flow [2023-11-28 20:38:10,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 20:38:10,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-28 20:38:10,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 227 transitions. [2023-11-28 20:38:10,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6755952380952381 [2023-11-28 20:38:10,166 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 227 transitions. [2023-11-28 20:38:10,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 227 transitions. [2023-11-28 20:38:10,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:38:10,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 227 transitions. [2023-11-28 20:38:10,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 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) [2023-11-28 20:38:10,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 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) [2023-11-28 20:38:10,172 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 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) [2023-11-28 20:38:10,172 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 151 flow. Second operand 7 states and 227 transitions. [2023-11-28 20:38:10,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 145 transitions, 615 flow [2023-11-28 20:38:10,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 145 transitions, 606 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-28 20:38:10,178 INFO L231 Difference]: Finished difference. Result has 60 places, 77 transitions, 276 flow [2023-11-28 20:38:10,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=276, PETRI_PLACES=60, PETRI_TRANSITIONS=77} [2023-11-28 20:38:10,180 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 4 predicate places. [2023-11-28 20:38:10,180 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 77 transitions, 276 flow [2023-11-28 20:38:10,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 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) [2023-11-28 20:38:10,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:38:10,181 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] [2023-11-28 20:38:10,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-28 20:38:10,181 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 2 more)] === [2023-11-28 20:38:10,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:10,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1652188769, now seen corresponding path program 3 times [2023-11-28 20:38:10,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:10,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162631447] [2023-11-28 20:38:10,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:10,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:10,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:10,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:38:10,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:10,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162631447] [2023-11-28 20:38:10,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162631447] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:10,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:10,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 20:38:10,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438918345] [2023-11-28 20:38:10,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:10,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:38:10,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:10,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:38:10,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:38:10,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2023-11-28 20:38:10,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 77 transitions, 276 flow. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 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) [2023-11-28 20:38:10,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:38:10,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2023-11-28 20:38:10,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:38:13,362 INFO L124 PetriNetUnfolderBase]: 23341/32584 cut-off events. [2023-11-28 20:38:13,362 INFO L125 PetriNetUnfolderBase]: For 17865/17865 co-relation queries the response was YES. [2023-11-28 20:38:13,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86314 conditions, 32584 events. 23341/32584 cut-off events. For 17865/17865 co-relation queries the response was YES. Maximal size of possible extension queue 1078. Compared 193736 event pairs, 6287 based on Foata normal form. 2/32543 useless extension candidates. Maximal degree in co-relation 22304. Up to 15953 conditions per place. [2023-11-28 20:38:13,518 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 172 selfloop transitions, 12 changer transitions 30/219 dead transitions. [2023-11-28 20:38:13,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 219 transitions, 1218 flow [2023-11-28 20:38:13,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:38:13,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 20:38:13,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2023-11-28 20:38:13,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2023-11-28 20:38:13,521 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 180 transitions. [2023-11-28 20:38:13,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 180 transitions. [2023-11-28 20:38:13,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:38:13,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 180 transitions. [2023-11-28 20:38:13,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 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) [2023-11-28 20:38:13,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 48.0) internal successors, (336), 7 states have internal predecessors, (336), 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) [2023-11-28 20:38:13,525 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 48.0) internal successors, (336), 7 states have internal predecessors, (336), 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) [2023-11-28 20:38:13,525 INFO L175 Difference]: Start difference. First operand has 60 places, 77 transitions, 276 flow. Second operand 6 states and 180 transitions. [2023-11-28 20:38:13,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 219 transitions, 1218 flow [2023-11-28 20:38:13,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 219 transitions, 1209 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 20:38:13,630 INFO L231 Difference]: Finished difference. Result has 67 places, 80 transitions, 342 flow [2023-11-28 20:38:13,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=342, PETRI_PLACES=67, PETRI_TRANSITIONS=80} [2023-11-28 20:38:13,632 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 11 predicate places. [2023-11-28 20:38:13,632 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 80 transitions, 342 flow [2023-11-28 20:38:13,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 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) [2023-11-28 20:38:13,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:38:13,633 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] [2023-11-28 20:38:13,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-28 20:38:13,633 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 2 more)] === [2023-11-28 20:38:13,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:13,634 INFO L85 PathProgramCache]: Analyzing trace with hash 165651255, now seen corresponding path program 4 times [2023-11-28 20:38:13,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:13,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737774709] [2023-11-28 20:38:13,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:13,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:13,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:13,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:38:13,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:13,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737774709] [2023-11-28 20:38:13,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737774709] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:13,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:13,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-28 20:38:13,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515271099] [2023-11-28 20:38:13,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:13,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 20:38:13,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:13,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:38:13,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:38:13,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2023-11-28 20:38:13,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 80 transitions, 342 flow. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 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) [2023-11-28 20:38:13,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:38:13,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2023-11-28 20:38:13,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:38:15,253 INFO L124 PetriNetUnfolderBase]: 9149/13968 cut-off events. [2023-11-28 20:38:15,253 INFO L125 PetriNetUnfolderBase]: For 11763/13145 co-relation queries the response was YES. [2023-11-28 20:38:15,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38370 conditions, 13968 events. 9149/13968 cut-off events. For 11763/13145 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 91867 event pairs, 1673 based on Foata normal form. 98/13572 useless extension candidates. Maximal degree in co-relation 24739. Up to 4277 conditions per place. [2023-11-28 20:38:15,361 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 94 selfloop transitions, 36 changer transitions 1/151 dead transitions. [2023-11-28 20:38:15,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 151 transitions, 778 flow [2023-11-28 20:38:15,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 20:38:15,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-28 20:38:15,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 227 transitions. [2023-11-28 20:38:15,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6755952380952381 [2023-11-28 20:38:15,364 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 227 transitions. [2023-11-28 20:38:15,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 227 transitions. [2023-11-28 20:38:15,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:38:15,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 227 transitions. [2023-11-28 20:38:15,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 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) [2023-11-28 20:38:15,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 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) [2023-11-28 20:38:15,368 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 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) [2023-11-28 20:38:15,368 INFO L175 Difference]: Start difference. First operand has 67 places, 80 transitions, 342 flow. Second operand 7 states and 227 transitions. [2023-11-28 20:38:15,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 151 transitions, 778 flow [2023-11-28 20:38:15,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 151 transitions, 727 flow, removed 11 selfloop flow, removed 6 redundant places. [2023-11-28 20:38:15,389 INFO L231 Difference]: Finished difference. Result has 68 places, 83 transitions, 383 flow [2023-11-28 20:38:15,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=383, PETRI_PLACES=68, PETRI_TRANSITIONS=83} [2023-11-28 20:38:15,390 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 12 predicate places. [2023-11-28 20:38:15,391 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 83 transitions, 383 flow [2023-11-28 20:38:15,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 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) [2023-11-28 20:38:15,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:38:15,391 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] [2023-11-28 20:38:15,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-28 20:38:15,392 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 2 more)] === [2023-11-28 20:38:15,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:15,393 INFO L85 PathProgramCache]: Analyzing trace with hash -291952163, now seen corresponding path program 5 times [2023-11-28 20:38:15,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:15,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165885105] [2023-11-28 20:38:15,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:15,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:15,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:15,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:38:15,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:15,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165885105] [2023-11-28 20:38:15,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165885105] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:15,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:15,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:38:15,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039483497] [2023-11-28 20:38:15,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:15,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:38:15,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:15,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:38:15,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:38:15,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2023-11-28 20:38:15,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 83 transitions, 383 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:38:15,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:38:15,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2023-11-28 20:38:15,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:38:17,201 INFO L124 PetriNetUnfolderBase]: 15206/23374 cut-off events. [2023-11-28 20:38:17,201 INFO L125 PetriNetUnfolderBase]: For 22994/23880 co-relation queries the response was YES. [2023-11-28 20:38:17,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67551 conditions, 23374 events. 15206/23374 cut-off events. For 22994/23880 co-relation queries the response was YES. Maximal size of possible extension queue 1080. Compared 165355 event pairs, 3830 based on Foata normal form. 280/23204 useless extension candidates. Maximal degree in co-relation 19639. Up to 8791 conditions per place. [2023-11-28 20:38:17,376 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 106 selfloop transitions, 48 changer transitions 0/174 dead transitions. [2023-11-28 20:38:17,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 174 transitions, 1069 flow [2023-11-28 20:38:17,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:38:17,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-28 20:38:17,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 173 transitions. [2023-11-28 20:38:17,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7208333333333333 [2023-11-28 20:38:17,378 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 173 transitions. [2023-11-28 20:38:17,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 173 transitions. [2023-11-28 20:38:17,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:38:17,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 173 transitions. [2023-11-28 20:38:17,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 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) [2023-11-28 20:38:17,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 48.0) internal successors, (288), 6 states have internal predecessors, (288), 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) [2023-11-28 20:38:17,380 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 48.0) internal successors, (288), 6 states have internal predecessors, (288), 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) [2023-11-28 20:38:17,380 INFO L175 Difference]: Start difference. First operand has 68 places, 83 transitions, 383 flow. Second operand 5 states and 173 transitions. [2023-11-28 20:38:17,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 174 transitions, 1069 flow [2023-11-28 20:38:17,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 174 transitions, 943 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-28 20:38:17,427 INFO L231 Difference]: Finished difference. Result has 70 places, 118 transitions, 672 flow [2023-11-28 20:38:17,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=672, PETRI_PLACES=70, PETRI_TRANSITIONS=118} [2023-11-28 20:38:17,429 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 14 predicate places. [2023-11-28 20:38:17,429 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 118 transitions, 672 flow [2023-11-28 20:38:17,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:38:17,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:38:17,430 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] [2023-11-28 20:38:17,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-28 20:38:17,430 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 2 more)] === [2023-11-28 20:38:17,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:17,431 INFO L85 PathProgramCache]: Analyzing trace with hash 544332747, now seen corresponding path program 6 times [2023-11-28 20:38:17,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:17,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779976383] [2023-11-28 20:38:17,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:17,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:17,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:17,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:38:17,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:17,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779976383] [2023-11-28 20:38:17,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779976383] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:17,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:17,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 20:38:17,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651207066] [2023-11-28 20:38:17,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:17,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:38:17,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:17,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:38:17,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:38:17,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2023-11-28 20:38:17,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 118 transitions, 672 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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) [2023-11-28 20:38:17,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:38:17,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2023-11-28 20:38:17,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:38:19,661 INFO L124 PetriNetUnfolderBase]: 17394/26956 cut-off events. [2023-11-28 20:38:19,661 INFO L125 PetriNetUnfolderBase]: For 37447/38929 co-relation queries the response was YES. [2023-11-28 20:38:19,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82324 conditions, 26956 events. 17394/26956 cut-off events. For 37447/38929 co-relation queries the response was YES. Maximal size of possible extension queue 1283. Compared 199174 event pairs, 3756 based on Foata normal form. 372/26496 useless extension candidates. Maximal degree in co-relation 23567. Up to 9522 conditions per place. [2023-11-28 20:38:19,836 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 110 selfloop transitions, 83 changer transitions 2/215 dead transitions. [2023-11-28 20:38:19,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 215 transitions, 1429 flow [2023-11-28 20:38:19,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:38:19,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 20:38:19,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 216 transitions. [2023-11-28 20:38:19,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2023-11-28 20:38:19,838 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 216 transitions. [2023-11-28 20:38:19,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 216 transitions. [2023-11-28 20:38:19,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:38:19,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 216 transitions. [2023-11-28 20:38:19,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 36.0) internal successors, (216), 6 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:38:19,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 48.0) internal successors, (336), 7 states have internal predecessors, (336), 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) [2023-11-28 20:38:19,840 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 48.0) internal successors, (336), 7 states have internal predecessors, (336), 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) [2023-11-28 20:38:19,840 INFO L175 Difference]: Start difference. First operand has 70 places, 118 transitions, 672 flow. Second operand 6 states and 216 transitions. [2023-11-28 20:38:19,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 215 transitions, 1429 flow [2023-11-28 20:38:19,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 215 transitions, 1412 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-11-28 20:38:19,907 INFO L231 Difference]: Finished difference. Result has 76 places, 143 transitions, 1064 flow [2023-11-28 20:38:19,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1064, PETRI_PLACES=76, PETRI_TRANSITIONS=143} [2023-11-28 20:38:19,908 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 20 predicate places. [2023-11-28 20:38:19,908 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 143 transitions, 1064 flow [2023-11-28 20:38:19,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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) [2023-11-28 20:38:19,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:38:19,908 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] [2023-11-28 20:38:19,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-28 20:38:19,908 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 2 more)] === [2023-11-28 20:38:19,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:19,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1196420981, now seen corresponding path program 7 times [2023-11-28 20:38:19,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:19,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496841781] [2023-11-28 20:38:19,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:19,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:20,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:38:20,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:20,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496841781] [2023-11-28 20:38:20,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496841781] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:20,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:20,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:38:20,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895211908] [2023-11-28 20:38:20,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:20,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:38:20,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:20,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:38:20,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:38:20,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2023-11-28 20:38:20,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 143 transitions, 1064 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:38:20,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:38:20,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2023-11-28 20:38:20,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:38:22,135 INFO L124 PetriNetUnfolderBase]: 17508/27509 cut-off events. [2023-11-28 20:38:22,135 INFO L125 PetriNetUnfolderBase]: For 66660/67916 co-relation queries the response was YES. [2023-11-28 20:38:22,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93174 conditions, 27509 events. 17508/27509 cut-off events. For 66660/67916 co-relation queries the response was YES. Maximal size of possible extension queue 1271. Compared 205478 event pairs, 4776 based on Foata normal form. 480/27567 useless extension candidates. Maximal degree in co-relation 24821. Up to 12035 conditions per place. [2023-11-28 20:38:22,328 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 126 selfloop transitions, 64 changer transitions 0/210 dead transitions. [2023-11-28 20:38:22,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 210 transitions, 1721 flow [2023-11-28 20:38:22,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:38:22,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-28 20:38:22,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 175 transitions. [2023-11-28 20:38:22,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2023-11-28 20:38:22,330 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 175 transitions. [2023-11-28 20:38:22,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 175 transitions. [2023-11-28 20:38:22,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:38:22,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 175 transitions. [2023-11-28 20:38:22,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 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) [2023-11-28 20:38:22,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 48.0) internal successors, (288), 6 states have internal predecessors, (288), 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) [2023-11-28 20:38:22,333 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 48.0) internal successors, (288), 6 states have internal predecessors, (288), 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) [2023-11-28 20:38:22,333 INFO L175 Difference]: Start difference. First operand has 76 places, 143 transitions, 1064 flow. Second operand 5 states and 175 transitions. [2023-11-28 20:38:22,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 210 transitions, 1721 flow [2023-11-28 20:38:22,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 210 transitions, 1703 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-28 20:38:22,448 INFO L231 Difference]: Finished difference. Result has 81 places, 153 transitions, 1340 flow [2023-11-28 20:38:22,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1340, PETRI_PLACES=81, PETRI_TRANSITIONS=153} [2023-11-28 20:38:22,450 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 25 predicate places. [2023-11-28 20:38:22,450 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 153 transitions, 1340 flow [2023-11-28 20:38:22,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:38:22,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:38:22,450 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] [2023-11-28 20:38:22,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-28 20:38:22,451 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 2 more)] === [2023-11-28 20:38:22,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:22,451 INFO L85 PathProgramCache]: Analyzing trace with hash 443279145, now seen corresponding path program 8 times [2023-11-28 20:38:22,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:22,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507772907] [2023-11-28 20:38:22,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:22,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:22,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:38:22,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:22,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507772907] [2023-11-28 20:38:22,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507772907] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:22,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:22,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-28 20:38:22,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870444565] [2023-11-28 20:38:22,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:22,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 20:38:22,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:22,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:38:22,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:38:22,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2023-11-28 20:38:22,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 153 transitions, 1340 flow. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 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) [2023-11-28 20:38:22,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:38:22,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2023-11-28 20:38:22,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:38:25,518 INFO L124 PetriNetUnfolderBase]: 17574/27448 cut-off events. [2023-11-28 20:38:25,519 INFO L125 PetriNetUnfolderBase]: For 91222/93034 co-relation queries the response was YES. [2023-11-28 20:38:25,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101216 conditions, 27448 events. 17574/27448 cut-off events. For 91222/93034 co-relation queries the response was YES. Maximal size of possible extension queue 1294. Compared 204482 event pairs, 3685 based on Foata normal form. 652/27384 useless extension candidates. Maximal degree in co-relation 30864. Up to 9510 conditions per place. [2023-11-28 20:38:25,741 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 102 selfloop transitions, 114 changer transitions 1/237 dead transitions. [2023-11-28 20:38:25,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 237 transitions, 2091 flow [2023-11-28 20:38:25,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 20:38:25,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-28 20:38:25,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 235 transitions. [2023-11-28 20:38:25,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6994047619047619 [2023-11-28 20:38:25,743 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 235 transitions. [2023-11-28 20:38:25,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 235 transitions. [2023-11-28 20:38:25,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:38:25,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 235 transitions. [2023-11-28 20:38:25,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.57142857142857) internal successors, (235), 7 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:38:25,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 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) [2023-11-28 20:38:25,745 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 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) [2023-11-28 20:38:25,746 INFO L175 Difference]: Start difference. First operand has 81 places, 153 transitions, 1340 flow. Second operand 7 states and 235 transitions. [2023-11-28 20:38:25,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 237 transitions, 2091 flow [2023-11-28 20:38:25,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 237 transitions, 1986 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-11-28 20:38:25,863 INFO L231 Difference]: Finished difference. Result has 85 places, 161 transitions, 1605 flow [2023-11-28 20:38:25,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1254, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1605, PETRI_PLACES=85, PETRI_TRANSITIONS=161} [2023-11-28 20:38:25,864 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 29 predicate places. [2023-11-28 20:38:25,864 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 161 transitions, 1605 flow [2023-11-28 20:38:25,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 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) [2023-11-28 20:38:25,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:38:25,864 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] [2023-11-28 20:38:25,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-28 20:38:25,864 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 2 more)] === [2023-11-28 20:38:25,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:25,865 INFO L85 PathProgramCache]: Analyzing trace with hash -637025731, now seen corresponding path program 9 times [2023-11-28 20:38:25,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:25,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362257857] [2023-11-28 20:38:25,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:25,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:25,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:38:25,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:25,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362257857] [2023-11-28 20:38:25,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362257857] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:25,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:25,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:38:25,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712820134] [2023-11-28 20:38:25,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:25,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:38:25,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:25,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:38:25,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:38:25,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2023-11-28 20:38:25,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 161 transitions, 1605 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:38:25,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:38:25,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2023-11-28 20:38:25,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:38:28,319 INFO L124 PetriNetUnfolderBase]: 17110/27123 cut-off events. [2023-11-28 20:38:28,320 INFO L125 PetriNetUnfolderBase]: For 107452/108828 co-relation queries the response was YES. [2023-11-28 20:38:28,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102909 conditions, 27123 events. 17110/27123 cut-off events. For 107452/108828 co-relation queries the response was YES. Maximal size of possible extension queue 1329. Compared 206652 event pairs, 4814 based on Foata normal form. 564/27116 useless extension candidates. Maximal degree in co-relation 25024. Up to 11793 conditions per place. [2023-11-28 20:38:28,510 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 124 selfloop transitions, 82 changer transitions 5/231 dead transitions. [2023-11-28 20:38:28,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 231 transitions, 2397 flow [2023-11-28 20:38:28,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:38:28,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-28 20:38:28,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 177 transitions. [2023-11-28 20:38:28,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7375 [2023-11-28 20:38:28,511 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 177 transitions. [2023-11-28 20:38:28,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 177 transitions. [2023-11-28 20:38:28,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:38:28,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 177 transitions. [2023-11-28 20:38:28,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 35.4) internal successors, (177), 5 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) [2023-11-28 20:38:28,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 48.0) internal successors, (288), 6 states have internal predecessors, (288), 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) [2023-11-28 20:38:28,513 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 48.0) internal successors, (288), 6 states have internal predecessors, (288), 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) [2023-11-28 20:38:28,513 INFO L175 Difference]: Start difference. First operand has 85 places, 161 transitions, 1605 flow. Second operand 5 states and 177 transitions. [2023-11-28 20:38:28,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 231 transitions, 2397 flow [2023-11-28 20:38:28,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 231 transitions, 2196 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-28 20:38:28,643 INFO L231 Difference]: Finished difference. Result has 87 places, 172 transitions, 1807 flow [2023-11-28 20:38:28,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1396, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1807, PETRI_PLACES=87, PETRI_TRANSITIONS=172} [2023-11-28 20:38:28,644 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 31 predicate places. [2023-11-28 20:38:28,644 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 172 transitions, 1807 flow [2023-11-28 20:38:28,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:38:28,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:38:28,645 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] [2023-11-28 20:38:28,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-28 20:38:28,645 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-28 20:38:28,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:28,645 INFO L85 PathProgramCache]: Analyzing trace with hash -497409245, now seen corresponding path program 10 times [2023-11-28 20:38:28,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:28,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987842074] [2023-11-28 20:38:28,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:28,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:28,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:28,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:38:28,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:28,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987842074] [2023-11-28 20:38:28,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987842074] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:28,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:28,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:38:28,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667367181] [2023-11-28 20:38:28,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:28,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:38:28,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:28,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:38:28,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:38:28,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2023-11-28 20:38:28,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 172 transitions, 1807 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:38:28,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:38:28,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2023-11-28 20:38:28,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:38:30,307 INFO L124 PetriNetUnfolderBase]: 11286/18178 cut-off events. [2023-11-28 20:38:30,307 INFO L125 PetriNetUnfolderBase]: For 70840/72236 co-relation queries the response was YES. [2023-11-28 20:38:30,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67832 conditions, 18178 events. 11286/18178 cut-off events. For 70840/72236 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 130681 event pairs, 2818 based on Foata normal form. 1096/19002 useless extension candidates. Maximal degree in co-relation 16993. Up to 8585 conditions per place. [2023-11-28 20:38:30,705 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 119 selfloop transitions, 86 changer transitions 0/221 dead transitions. [2023-11-28 20:38:30,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 221 transitions, 2419 flow [2023-11-28 20:38:30,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:38:30,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-28 20:38:30,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 171 transitions. [2023-11-28 20:38:30,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7125 [2023-11-28 20:38:30,707 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 171 transitions. [2023-11-28 20:38:30,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 171 transitions. [2023-11-28 20:38:30,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:38:30,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 171 transitions. [2023-11-28 20:38:30,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 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) [2023-11-28 20:38:30,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 48.0) internal successors, (288), 6 states have internal predecessors, (288), 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) [2023-11-28 20:38:30,709 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 48.0) internal successors, (288), 6 states have internal predecessors, (288), 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) [2023-11-28 20:38:30,709 INFO L175 Difference]: Start difference. First operand has 87 places, 172 transitions, 1807 flow. Second operand 5 states and 171 transitions. [2023-11-28 20:38:30,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 221 transitions, 2419 flow [2023-11-28 20:38:30,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 221 transitions, 2315 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-28 20:38:30,784 INFO L231 Difference]: Finished difference. Result has 88 places, 173 transitions, 2001 flow [2023-11-28 20:38:30,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1463, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2001, PETRI_PLACES=88, PETRI_TRANSITIONS=173} [2023-11-28 20:38:30,785 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 32 predicate places. [2023-11-28 20:38:30,785 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 173 transitions, 2001 flow [2023-11-28 20:38:30,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:38:30,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:38:30,785 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] [2023-11-28 20:38:30,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-28 20:38:30,785 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-28 20:38:30,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:30,786 INFO L85 PathProgramCache]: Analyzing trace with hash 709386697, now seen corresponding path program 11 times [2023-11-28 20:38:30,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:30,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907259495] [2023-11-28 20:38:30,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:30,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:30,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:30,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:38:30,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:30,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907259495] [2023-11-28 20:38:30,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907259495] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:30,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:30,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 20:38:30,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87556467] [2023-11-28 20:38:30,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:30,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:38:30,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:30,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:38:30,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:38:30,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2023-11-28 20:38:30,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 173 transitions, 2001 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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) [2023-11-28 20:38:30,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:38:30,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2023-11-28 20:38:30,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:38:32,726 INFO L124 PetriNetUnfolderBase]: 11297/18070 cut-off events. [2023-11-28 20:38:32,727 INFO L125 PetriNetUnfolderBase]: For 75590/76811 co-relation queries the response was YES. [2023-11-28 20:38:32,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69242 conditions, 18070 events. 11297/18070 cut-off events. For 75590/76811 co-relation queries the response was YES. Maximal size of possible extension queue 791. Compared 129119 event pairs, 2303 based on Foata normal form. 604/18130 useless extension candidates. Maximal degree in co-relation 19631. Up to 5833 conditions per place. [2023-11-28 20:38:32,851 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 111 selfloop transitions, 121 changer transitions 2/250 dead transitions. [2023-11-28 20:38:32,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 250 transitions, 2803 flow [2023-11-28 20:38:32,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:38:32,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 20:38:32,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 213 transitions. [2023-11-28 20:38:32,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7395833333333334 [2023-11-28 20:38:32,854 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 213 transitions. [2023-11-28 20:38:32,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 213 transitions. [2023-11-28 20:38:32,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:38:32,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 213 transitions. [2023-11-28 20:38:32,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 35.5) internal successors, (213), 6 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:38:32,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 48.0) internal successors, (336), 7 states have internal predecessors, (336), 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) [2023-11-28 20:38:32,856 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 48.0) internal successors, (336), 7 states have internal predecessors, (336), 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) [2023-11-28 20:38:32,856 INFO L175 Difference]: Start difference. First operand has 88 places, 173 transitions, 2001 flow. Second operand 6 states and 213 transitions. [2023-11-28 20:38:32,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 250 transitions, 2803 flow [2023-11-28 20:38:32,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 250 transitions, 2706 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 20:38:32,896 INFO L231 Difference]: Finished difference. Result has 92 places, 177 transitions, 2259 flow [2023-11-28 20:38:32,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1909, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2259, PETRI_PLACES=92, PETRI_TRANSITIONS=177} [2023-11-28 20:38:32,896 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 36 predicate places. [2023-11-28 20:38:32,896 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 177 transitions, 2259 flow [2023-11-28 20:38:32,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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) [2023-11-28 20:38:32,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:38:32,897 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] [2023-11-28 20:38:32,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-28 20:38:32,897 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-28 20:38:32,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:32,897 INFO L85 PathProgramCache]: Analyzing trace with hash -775600289, now seen corresponding path program 12 times [2023-11-28 20:38:32,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:32,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504154784] [2023-11-28 20:38:32,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:32,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:32,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:33,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:38:33,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:33,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504154784] [2023-11-28 20:38:33,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504154784] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:33,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:33,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-28 20:38:33,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284563221] [2023-11-28 20:38:33,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:33,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 20:38:33,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:33,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:38:33,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:38:33,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2023-11-28 20:38:33,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 177 transitions, 2259 flow. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 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) [2023-11-28 20:38:33,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:38:33,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2023-11-28 20:38:33,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:38:34,888 INFO L124 PetriNetUnfolderBase]: 11459/18440 cut-off events. [2023-11-28 20:38:34,889 INFO L125 PetriNetUnfolderBase]: For 96432/97612 co-relation queries the response was YES. [2023-11-28 20:38:34,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74241 conditions, 18440 events. 11459/18440 cut-off events. For 96432/97612 co-relation queries the response was YES. Maximal size of possible extension queue 799. Compared 133391 event pairs, 2373 based on Foata normal form. 619/18525 useless extension candidates. Maximal degree in co-relation 21687. Up to 5789 conditions per place. [2023-11-28 20:38:35,040 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 131 selfloop transitions, 130 changer transitions 1/278 dead transitions. [2023-11-28 20:38:35,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 278 transitions, 3265 flow [2023-11-28 20:38:35,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-28 20:38:35,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-28 20:38:35,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 271 transitions. [2023-11-28 20:38:35,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7057291666666666 [2023-11-28 20:38:35,043 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 271 transitions. [2023-11-28 20:38:35,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 271 transitions. [2023-11-28 20:38:35,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:38:35,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 271 transitions. [2023-11-28 20:38:35,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.875) internal successors, (271), 8 states have internal predecessors, (271), 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) [2023-11-28 20:38:35,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 48.0) internal successors, (432), 9 states have internal predecessors, (432), 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) [2023-11-28 20:38:35,046 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 48.0) internal successors, (432), 9 states have internal predecessors, (432), 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) [2023-11-28 20:38:35,046 INFO L175 Difference]: Start difference. First operand has 92 places, 177 transitions, 2259 flow. Second operand 8 states and 271 transitions. [2023-11-28 20:38:35,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 278 transitions, 3265 flow [2023-11-28 20:38:35,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 278 transitions, 3039 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-11-28 20:38:35,126 INFO L231 Difference]: Finished difference. Result has 96 places, 186 transitions, 2504 flow [2023-11-28 20:38:35,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2057, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2504, PETRI_PLACES=96, PETRI_TRANSITIONS=186} [2023-11-28 20:38:35,127 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 40 predicate places. [2023-11-28 20:38:35,127 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 186 transitions, 2504 flow [2023-11-28 20:38:35,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 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) [2023-11-28 20:38:35,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:38:35,128 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] [2023-11-28 20:38:35,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-28 20:38:35,128 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-28 20:38:35,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:35,128 INFO L85 PathProgramCache]: Analyzing trace with hash 995532475, now seen corresponding path program 13 times [2023-11-28 20:38:35,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:35,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970644278] [2023-11-28 20:38:35,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:35,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:35,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:35,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:38:35,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:35,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970644278] [2023-11-28 20:38:35,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970644278] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:35,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:35,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-28 20:38:35,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311760561] [2023-11-28 20:38:35,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:35,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 20:38:35,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:35,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:38:35,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:38:35,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2023-11-28 20:38:35,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 186 transitions, 2504 flow. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 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) [2023-11-28 20:38:35,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:38:35,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2023-11-28 20:38:35,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:38:37,321 INFO L124 PetriNetUnfolderBase]: 11214/18361 cut-off events. [2023-11-28 20:38:37,321 INFO L125 PetriNetUnfolderBase]: For 95570/96422 co-relation queries the response was YES. [2023-11-28 20:38:37,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73725 conditions, 18361 events. 11214/18361 cut-off events. For 95570/96422 co-relation queries the response was YES. Maximal size of possible extension queue 792. Compared 135853 event pairs, 2309 based on Foata normal form. 720/18595 useless extension candidates. Maximal degree in co-relation 20888. Up to 5788 conditions per place. [2023-11-28 20:38:37,451 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 130 selfloop transitions, 136 changer transitions 16/298 dead transitions. [2023-11-28 20:38:37,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 298 transitions, 3680 flow [2023-11-28 20:38:37,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-28 20:38:37,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-28 20:38:37,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 277 transitions. [2023-11-28 20:38:37,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7213541666666666 [2023-11-28 20:38:37,453 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 277 transitions. [2023-11-28 20:38:37,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 277 transitions. [2023-11-28 20:38:37,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:38:37,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 277 transitions. [2023-11-28 20:38:37,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 34.625) internal successors, (277), 8 states have internal predecessors, (277), 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) [2023-11-28 20:38:37,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 48.0) internal successors, (432), 9 states have internal predecessors, (432), 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) [2023-11-28 20:38:37,455 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 48.0) internal successors, (432), 9 states have internal predecessors, (432), 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) [2023-11-28 20:38:37,455 INFO L175 Difference]: Start difference. First operand has 96 places, 186 transitions, 2504 flow. Second operand 8 states and 277 transitions. [2023-11-28 20:38:37,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 298 transitions, 3680 flow [2023-11-28 20:38:37,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 298 transitions, 3497 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-28 20:38:37,529 INFO L231 Difference]: Finished difference. Result has 102 places, 192 transitions, 2733 flow [2023-11-28 20:38:37,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2338, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2733, PETRI_PLACES=102, PETRI_TRANSITIONS=192} [2023-11-28 20:38:37,529 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 46 predicate places. [2023-11-28 20:38:37,530 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 192 transitions, 2733 flow [2023-11-28 20:38:37,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 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) [2023-11-28 20:38:37,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:38:37,530 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] [2023-11-28 20:38:37,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-28 20:38:37,530 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-28 20:38:37,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:37,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1304993953, now seen corresponding path program 14 times [2023-11-28 20:38:37,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:37,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334573819] [2023-11-28 20:38:37,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:37,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:37,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:37,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:38:37,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:37,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334573819] [2023-11-28 20:38:37,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334573819] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:37,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:37,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-28 20:38:37,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813092540] [2023-11-28 20:38:37,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:37,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 20:38:37,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:37,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:38:37,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:38:37,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2023-11-28 20:38:37,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 192 transitions, 2733 flow. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 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) [2023-11-28 20:38:37,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:38:37,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2023-11-28 20:38:37,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:38:39,344 INFO L124 PetriNetUnfolderBase]: 8240/13685 cut-off events. [2023-11-28 20:38:39,344 INFO L125 PetriNetUnfolderBase]: For 69664/70198 co-relation queries the response was YES. [2023-11-28 20:38:39,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56879 conditions, 13685 events. 8240/13685 cut-off events. For 69664/70198 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 97291 event pairs, 1760 based on Foata normal form. 690/14136 useless extension candidates. Maximal degree in co-relation 16704. Up to 3984 conditions per place. [2023-11-28 20:38:39,436 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 117 selfloop transitions, 132 changer transitions 32/297 dead transitions. [2023-11-28 20:38:39,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 297 transitions, 4023 flow [2023-11-28 20:38:39,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-28 20:38:39,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-28 20:38:39,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 266 transitions. [2023-11-28 20:38:39,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6927083333333334 [2023-11-28 20:38:39,438 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 266 transitions. [2023-11-28 20:38:39,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 266 transitions. [2023-11-28 20:38:39,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:38:39,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 266 transitions. [2023-11-28 20:38:39,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.25) internal successors, (266), 8 states have internal predecessors, (266), 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) [2023-11-28 20:38:39,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 48.0) internal successors, (432), 9 states have internal predecessors, (432), 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) [2023-11-28 20:38:39,441 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 48.0) internal successors, (432), 9 states have internal predecessors, (432), 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) [2023-11-28 20:38:39,441 INFO L175 Difference]: Start difference. First operand has 102 places, 192 transitions, 2733 flow. Second operand 8 states and 266 transitions. [2023-11-28 20:38:39,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 297 transitions, 4023 flow [2023-11-28 20:38:39,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 297 transitions, 3768 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-28 20:38:39,536 INFO L231 Difference]: Finished difference. Result has 106 places, 186 transitions, 2744 flow [2023-11-28 20:38:39,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2465, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2744, PETRI_PLACES=106, PETRI_TRANSITIONS=186} [2023-11-28 20:38:39,537 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 50 predicate places. [2023-11-28 20:38:39,537 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 186 transitions, 2744 flow [2023-11-28 20:38:39,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 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) [2023-11-28 20:38:39,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:38:39,537 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] [2023-11-28 20:38:39,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-28 20:38:39,537 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-28 20:38:39,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:39,538 INFO L85 PathProgramCache]: Analyzing trace with hash 2096045739, now seen corresponding path program 15 times [2023-11-28 20:38:39,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:39,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421094953] [2023-11-28 20:38:39,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:39,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:39,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:39,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:38:39,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:39,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421094953] [2023-11-28 20:38:39,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421094953] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:39,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:39,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 20:38:39,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781523738] [2023-11-28 20:38:39,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:39,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-28 20:38:39,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:39,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-28 20:38:39,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-28 20:38:39,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2023-11-28 20:38:39,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 186 transitions, 2744 flow. Second operand has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 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) [2023-11-28 20:38:39,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:38:39,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2023-11-28 20:38:39,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:38:41,137 INFO L124 PetriNetUnfolderBase]: 7154/11919 cut-off events. [2023-11-28 20:38:41,138 INFO L125 PetriNetUnfolderBase]: For 68608/68914 co-relation queries the response was YES. [2023-11-28 20:38:41,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49250 conditions, 11919 events. 7154/11919 cut-off events. For 68608/68914 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 83800 event pairs, 1640 based on Foata normal form. 352/12052 useless extension candidates. Maximal degree in co-relation 16901. Up to 4130 conditions per place. [2023-11-28 20:38:41,212 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 104 selfloop transitions, 132 changer transitions 31/283 dead transitions. [2023-11-28 20:38:41,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 283 transitions, 3810 flow [2023-11-28 20:38:41,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-28 20:38:41,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-28 20:38:41,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 279 transitions. [2023-11-28 20:38:41,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2023-11-28 20:38:41,215 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 279 transitions. [2023-11-28 20:38:41,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 279 transitions. [2023-11-28 20:38:41,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:38:41,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 279 transitions. [2023-11-28 20:38:41,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 31.0) internal successors, (279), 9 states have internal predecessors, (279), 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) [2023-11-28 20:38:41,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 48.0) internal successors, (480), 10 states have internal predecessors, (480), 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) [2023-11-28 20:38:41,218 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 48.0) internal successors, (480), 10 states have internal predecessors, (480), 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) [2023-11-28 20:38:41,218 INFO L175 Difference]: Start difference. First operand has 106 places, 186 transitions, 2744 flow. Second operand 9 states and 279 transitions. [2023-11-28 20:38:41,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 283 transitions, 3810 flow [2023-11-28 20:38:41,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 283 transitions, 3689 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-28 20:38:41,296 INFO L231 Difference]: Finished difference. Result has 112 places, 175 transitions, 2689 flow [2023-11-28 20:38:41,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2634, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2689, PETRI_PLACES=112, PETRI_TRANSITIONS=175} [2023-11-28 20:38:41,297 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 56 predicate places. [2023-11-28 20:38:41,297 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 175 transitions, 2689 flow [2023-11-28 20:38:41,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 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) [2023-11-28 20:38:41,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:38:41,297 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] [2023-11-28 20:38:41,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-28 20:38:41,298 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-28 20:38:41,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:41,298 INFO L85 PathProgramCache]: Analyzing trace with hash 568069781, now seen corresponding path program 16 times [2023-11-28 20:38:41,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:41,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242703672] [2023-11-28 20:38:41,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:41,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:41,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:38:41,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:41,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242703672] [2023-11-28 20:38:41,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242703672] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:41,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:41,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-28 20:38:41,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476537080] [2023-11-28 20:38:41,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:41,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-28 20:38:41,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:41,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-28 20:38:41,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-28 20:38:41,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2023-11-28 20:38:41,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 175 transitions, 2689 flow. Second operand has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 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) [2023-11-28 20:38:41,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:38:41,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2023-11-28 20:38:41,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:38:42,896 INFO L124 PetriNetUnfolderBase]: 6588/11001 cut-off events. [2023-11-28 20:38:42,896 INFO L125 PetriNetUnfolderBase]: For 74556/74982 co-relation queries the response was YES. [2023-11-28 20:38:42,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46558 conditions, 11001 events. 6588/11001 cut-off events. For 74556/74982 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 76306 event pairs, 1642 based on Foata normal form. 368/11158 useless extension candidates. Maximal degree in co-relation 15418. Up to 3844 conditions per place. [2023-11-28 20:38:42,972 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 116 selfloop transitions, 135 changer transitions 18/285 dead transitions. [2023-11-28 20:38:42,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 285 transitions, 3801 flow [2023-11-28 20:38:42,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-28 20:38:42,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-28 20:38:42,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 344 transitions. [2023-11-28 20:38:42,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5972222222222222 [2023-11-28 20:38:42,974 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 344 transitions. [2023-11-28 20:38:42,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 344 transitions. [2023-11-28 20:38:42,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:38:42,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 344 transitions. [2023-11-28 20:38:42,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 28.666666666666668) internal successors, (344), 12 states have internal predecessors, (344), 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) [2023-11-28 20:38:42,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 48.0) internal successors, (624), 13 states have internal predecessors, (624), 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) [2023-11-28 20:38:42,978 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 48.0) internal successors, (624), 13 states have internal predecessors, (624), 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) [2023-11-28 20:38:42,978 INFO L175 Difference]: Start difference. First operand has 112 places, 175 transitions, 2689 flow. Second operand 12 states and 344 transitions. [2023-11-28 20:38:42,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 285 transitions, 3801 flow [2023-11-28 20:38:43,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 285 transitions, 3502 flow, removed 12 selfloop flow, removed 6 redundant places. [2023-11-28 20:38:43,080 INFO L231 Difference]: Finished difference. Result has 119 places, 178 transitions, 2690 flow [2023-11-28 20:38:43,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2425, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2690, PETRI_PLACES=119, PETRI_TRANSITIONS=178} [2023-11-28 20:38:43,080 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 63 predicate places. [2023-11-28 20:38:43,081 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 178 transitions, 2690 flow [2023-11-28 20:38:43,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 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) [2023-11-28 20:38:43,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:38:43,081 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] [2023-11-28 20:38:43,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-28 20:38:43,081 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-28 20:38:43,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:43,082 INFO L85 PathProgramCache]: Analyzing trace with hash 2054546553, now seen corresponding path program 17 times [2023-11-28 20:38:43,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:43,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195193247] [2023-11-28 20:38:43,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:43,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:43,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:38:43,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:43,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195193247] [2023-11-28 20:38:43,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195193247] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:43,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:43,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-28 20:38:43,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019069900] [2023-11-28 20:38:43,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:43,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-28 20:38:43,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:43,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-28 20:38:43,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-28 20:38:43,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2023-11-28 20:38:43,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 178 transitions, 2690 flow. Second operand has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 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) [2023-11-28 20:38:43,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:38:43,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2023-11-28 20:38:43,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:38:44,755 INFO L124 PetriNetUnfolderBase]: 6594/11057 cut-off events. [2023-11-28 20:38:44,755 INFO L125 PetriNetUnfolderBase]: For 77445/77733 co-relation queries the response was YES. [2023-11-28 20:38:44,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46995 conditions, 11057 events. 6594/11057 cut-off events. For 77445/77733 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 77280 event pairs, 1724 based on Foata normal form. 270/11146 useless extension candidates. Maximal degree in co-relation 15654. Up to 3890 conditions per place. [2023-11-28 20:38:44,832 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 99 selfloop transitions, 125 changer transitions 48/288 dead transitions. [2023-11-28 20:38:44,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 288 transitions, 3817 flow [2023-11-28 20:38:44,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-28 20:38:44,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-28 20:38:44,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 345 transitions. [2023-11-28 20:38:44,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5989583333333334 [2023-11-28 20:38:44,834 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 345 transitions. [2023-11-28 20:38:44,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 345 transitions. [2023-11-28 20:38:44,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:38:44,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 345 transitions. [2023-11-28 20:38:44,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 28.75) internal successors, (345), 12 states have internal predecessors, (345), 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) [2023-11-28 20:38:44,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 48.0) internal successors, (624), 13 states have internal predecessors, (624), 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) [2023-11-28 20:38:44,838 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 48.0) internal successors, (624), 13 states have internal predecessors, (624), 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) [2023-11-28 20:38:44,838 INFO L175 Difference]: Start difference. First operand has 119 places, 178 transitions, 2690 flow. Second operand 12 states and 345 transitions. [2023-11-28 20:38:44,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 288 transitions, 3817 flow [2023-11-28 20:38:44,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 288 transitions, 3628 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-11-28 20:38:44,951 INFO L231 Difference]: Finished difference. Result has 125 places, 168 transitions, 2578 flow [2023-11-28 20:38:44,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2517, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2578, PETRI_PLACES=125, PETRI_TRANSITIONS=168} [2023-11-28 20:38:44,952 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 69 predicate places. [2023-11-28 20:38:44,952 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 168 transitions, 2578 flow [2023-11-28 20:38:44,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 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) [2023-11-28 20:38:44,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:38:44,952 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] [2023-11-28 20:38:44,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-28 20:38:44,952 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-28 20:38:44,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:44,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1315375651, now seen corresponding path program 18 times [2023-11-28 20:38:44,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:44,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404632274] [2023-11-28 20:38:44,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:44,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:44,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:45,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:38:45,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:45,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404632274] [2023-11-28 20:38:45,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404632274] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:45,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:45,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-28 20:38:45,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147496055] [2023-11-28 20:38:45,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:45,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-28 20:38:45,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:45,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-28 20:38:45,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-28 20:38:45,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2023-11-28 20:38:45,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 168 transitions, 2578 flow. Second operand has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 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) [2023-11-28 20:38:45,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:38:45,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2023-11-28 20:38:45,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:38:46,501 INFO L124 PetriNetUnfolderBase]: 6332/10557 cut-off events. [2023-11-28 20:38:46,501 INFO L125 PetriNetUnfolderBase]: For 82404/82864 co-relation queries the response was YES. [2023-11-28 20:38:46,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46034 conditions, 10557 events. 6332/10557 cut-off events. For 82404/82864 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 72599 event pairs, 1656 based on Foata normal form. 382/10764 useless extension candidates. Maximal degree in co-relation 17866. Up to 3796 conditions per place. [2023-11-28 20:38:46,575 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 109 selfloop transitions, 124 changer transitions 32/280 dead transitions. [2023-11-28 20:38:46,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 280 transitions, 3715 flow [2023-11-28 20:38:46,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-28 20:38:46,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-28 20:38:46,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 346 transitions. [2023-11-28 20:38:46,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6006944444444444 [2023-11-28 20:38:46,577 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 346 transitions. [2023-11-28 20:38:46,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 346 transitions. [2023-11-28 20:38:46,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:38:46,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 346 transitions. [2023-11-28 20:38:46,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 28.833333333333332) internal successors, (346), 12 states have internal predecessors, (346), 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) [2023-11-28 20:38:46,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 48.0) internal successors, (624), 13 states have internal predecessors, (624), 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) [2023-11-28 20:38:46,580 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 48.0) internal successors, (624), 13 states have internal predecessors, (624), 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) [2023-11-28 20:38:46,580 INFO L175 Difference]: Start difference. First operand has 125 places, 168 transitions, 2578 flow. Second operand 12 states and 346 transitions. [2023-11-28 20:38:46,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 280 transitions, 3715 flow [2023-11-28 20:38:46,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 280 transitions, 3449 flow, removed 9 selfloop flow, removed 8 redundant places. [2023-11-28 20:38:46,675 INFO L231 Difference]: Finished difference. Result has 127 places, 165 transitions, 2508 flow [2023-11-28 20:38:46,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2338, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2508, PETRI_PLACES=127, PETRI_TRANSITIONS=165} [2023-11-28 20:38:46,676 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 71 predicate places. [2023-11-28 20:38:46,676 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 165 transitions, 2508 flow [2023-11-28 20:38:46,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 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) [2023-11-28 20:38:46,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:38:46,676 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] [2023-11-28 20:38:46,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-28 20:38:46,676 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-28 20:38:46,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:46,676 INFO L85 PathProgramCache]: Analyzing trace with hash -2009535087, now seen corresponding path program 19 times [2023-11-28 20:38:46,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:46,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24154937] [2023-11-28 20:38:46,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:46,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:46,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:46,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:38:46,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:46,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24154937] [2023-11-28 20:38:46,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24154937] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:46,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:46,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-28 20:38:46,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744493949] [2023-11-28 20:38:46,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:46,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-28 20:38:46,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:46,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-28 20:38:46,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-28 20:38:46,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2023-11-28 20:38:46,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 165 transitions, 2508 flow. Second operand has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 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) [2023-11-28 20:38:46,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:38:46,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2023-11-28 20:38:46,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:38:47,234 INFO L124 PetriNetUnfolderBase]: 768/1462 cut-off events. [2023-11-28 20:38:47,234 INFO L125 PetriNetUnfolderBase]: For 12485/12485 co-relation queries the response was YES. [2023-11-28 20:38:47,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8410 conditions, 1462 events. 768/1462 cut-off events. For 12485/12485 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 8623 event pairs, 80 based on Foata normal form. 256/1711 useless extension candidates. Maximal degree in co-relation 6102. Up to 378 conditions per place. [2023-11-28 20:38:47,242 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 0 selfloop transitions, 0 changer transitions 129/129 dead transitions. [2023-11-28 20:38:47,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 129 transitions, 1836 flow [2023-11-28 20:38:47,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-28 20:38:47,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-28 20:38:47,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 264 transitions. [2023-11-28 20:38:47,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2023-11-28 20:38:47,243 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 264 transitions. [2023-11-28 20:38:47,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 264 transitions. [2023-11-28 20:38:47,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:38:47,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 264 transitions. [2023-11-28 20:38:47,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 22.0) internal successors, (264), 12 states have internal predecessors, (264), 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) [2023-11-28 20:38:47,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 48.0) internal successors, (624), 13 states have internal predecessors, (624), 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) [2023-11-28 20:38:47,246 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 48.0) internal successors, (624), 13 states have internal predecessors, (624), 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) [2023-11-28 20:38:47,246 INFO L175 Difference]: Start difference. First operand has 127 places, 165 transitions, 2508 flow. Second operand 12 states and 264 transitions. [2023-11-28 20:38:47,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 129 transitions, 1836 flow [2023-11-28 20:38:47,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 129 transitions, 1664 flow, removed 16 selfloop flow, removed 14 redundant places. [2023-11-28 20:38:47,270 INFO L231 Difference]: Finished difference. Result has 106 places, 0 transitions, 0 flow [2023-11-28 20:38:47,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1162, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=106, PETRI_TRANSITIONS=0} [2023-11-28 20:38:47,270 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 50 predicate places. [2023-11-28 20:38:47,270 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 0 transitions, 0 flow [2023-11-28 20:38:47,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 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) [2023-11-28 20:38:47,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-11-28 20:38:47,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-11-28 20:38:47,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-11-28 20:38:47,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-11-28 20:38:47,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-11-28 20:38:47,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-28 20:38:47,273 INFO L445 BasicCegarLoop]: Path program histogram: [19] [2023-11-28 20:38:47,277 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-28 20:38:47,277 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-28 20:38:47,281 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:38:47 BasicIcfg [2023-11-28 20:38:47,281 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-28 20:38:47,281 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-28 20:38:47,281 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-28 20:38:47,282 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-28 20:38:47,282 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:38:03" (3/4) ... [2023-11-28 20:38:47,284 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-28 20:38:47,287 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-28 20:38:47,287 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-28 20:38:47,287 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-28 20:38:47,287 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2023-11-28 20:38:47,294 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 95 nodes and edges [2023-11-28 20:38:47,294 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2023-11-28 20:38:47,294 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-28 20:38:47,295 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-28 20:38:47,388 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2f44a-7f96-48e8-a393-37b01857e35c/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-28 20:38:47,389 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2f44a-7f96-48e8-a393-37b01857e35c/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-28 20:38:47,389 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-28 20:38:47,390 INFO L158 Benchmark]: Toolchain (without parser) took 44480.18ms. Allocated memory was 157.3MB in the beginning and 2.7GB in the end (delta: 2.6GB). Free memory was 113.0MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2023-11-28 20:38:47,390 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 107.0MB. Free memory was 57.5MB in the beginning and 57.4MB in the end (delta: 159.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-28 20:38:47,391 INFO L158 Benchmark]: CACSL2BoogieTranslator took 267.01ms. Allocated memory is still 157.3MB. Free memory was 112.4MB in the beginning and 100.7MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-28 20:38:47,391 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.11ms. Allocated memory is still 157.3MB. Free memory was 100.7MB in the beginning and 98.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-28 20:38:47,391 INFO L158 Benchmark]: Boogie Preprocessor took 57.36ms. Allocated memory is still 157.3MB. Free memory was 98.5MB in the beginning and 96.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-28 20:38:47,392 INFO L158 Benchmark]: RCFGBuilder took 699.70ms. Allocated memory is still 157.3MB. Free memory was 96.0MB in the beginning and 95.8MB in the end (delta: 193.5kB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. [2023-11-28 20:38:47,392 INFO L158 Benchmark]: TraceAbstraction took 43289.61ms. Allocated memory was 157.3MB in the beginning and 2.7GB in the end (delta: 2.6GB). Free memory was 95.2MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2023-11-28 20:38:47,392 INFO L158 Benchmark]: Witness Printer took 107.70ms. Allocated memory is still 2.7GB. Free memory was 1.5GB in the beginning and 1.5GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-28 20:38:47,395 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 107.0MB. Free memory was 57.5MB in the beginning and 57.4MB in the end (delta: 159.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 267.01ms. Allocated memory is still 157.3MB. Free memory was 112.4MB in the beginning and 100.7MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.11ms. Allocated memory is still 157.3MB. Free memory was 100.7MB in the beginning and 98.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.36ms. Allocated memory is still 157.3MB. Free memory was 98.5MB in the beginning and 96.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 699.70ms. Allocated memory is still 157.3MB. Free memory was 96.0MB in the beginning and 95.8MB in the end (delta: 193.5kB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. * TraceAbstraction took 43289.61ms. Allocated memory was 157.3MB in the beginning and 2.7GB in the end (delta: 2.6GB). Free memory was 95.2MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Witness Printer took 107.70ms. Allocated memory is still 2.7GB. Free memory was 1.5GB in the beginning and 1.5GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 146]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 82 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 43.2s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 19, EmptinessCheckTime: 0.0s, AutomataDifference: 38.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1485 SdHoareTripleChecker+Valid, 4.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1481 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 3.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 364 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6043 IncrementalHoareTripleChecker+Invalid, 6407 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 364 mSolverCounterUnsat, 5 mSDtfsCounter, 6043 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 173 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2744occurred in iteration=14, InterpolantAutomatonStates: 146, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 817 NumberOfCodeBlocks, 817 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 798 ConstructedInterpolants, 0 QuantifiedInterpolants, 2793 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-28 20:38:47,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0e2f44a-7f96-48e8-a393-37b01857e35c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE