./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix007.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d6e90ba-17e0-4134-8b08-19a4ad5d701a/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d6e90ba-17e0-4134-8b08-19a4ad5d701a/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d6e90ba-17e0-4134-8b08-19a4ad5d701a/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d6e90ba-17e0-4134-8b08-19a4ad5d701a/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix007.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d6e90ba-17e0-4134-8b08-19a4ad5d701a/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d6e90ba-17e0-4134-8b08-19a4ad5d701a/bin/uautomizer-verify-4GaUIPS5ZU --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 98fb631b7747d0724c093b074b80cf02851c21b4b9e1af2c5f1e3d032d6b592f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:12:27,702 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:12:27,796 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d6e90ba-17e0-4134-8b08-19a4ad5d701a/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:12:27,803 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:12:27,806 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:12:27,844 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:12:27,845 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:12:27,846 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:12:27,846 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:12:27,848 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:12:27,848 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:12:27,849 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:12:27,850 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:12:27,850 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:12:27,851 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:12:27,853 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:12:27,853 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:12:27,854 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:12:27,854 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:12:27,858 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:12:27,858 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:12:27,859 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:12:27,859 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:12:27,859 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:12:27,860 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:12:27,860 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:12:27,860 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:12:27,860 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:12:27,861 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:12:27,861 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:12:27,861 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:12:27,861 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:12:27,862 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:12:27,864 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:12:27,865 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:12:27,865 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:12:27,866 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:12:27,866 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:12:27,867 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:12:27,867 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:12:27,867 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:12:27,868 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:12:27,868 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_3d6e90ba-17e0-4134-8b08-19a4ad5d701a/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d6e90ba-17e0-4134-8b08-19a4ad5d701a/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98fb631b7747d0724c093b074b80cf02851c21b4b9e1af2c5f1e3d032d6b592f [2024-10-31 22:12:28,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:12:28,192 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:12:28,196 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:12:28,197 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:12:28,198 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:12:28,199 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d6e90ba-17e0-4134-8b08-19a4ad5d701a/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-wmm/mix007.opt.i Unable to find full path for "g++" [2024-10-31 22:12:30,277 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:12:30,562 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:12:30,562 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d6e90ba-17e0-4134-8b08-19a4ad5d701a/sv-benchmarks/c/pthread-wmm/mix007.opt.i [2024-10-31 22:12:30,588 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d6e90ba-17e0-4134-8b08-19a4ad5d701a/bin/uautomizer-verify-4GaUIPS5ZU/data/27eac1502/e39d5cc424de40b4a197739d3f6c5ff8/FLAGcd6fbeb00 [2024-10-31 22:12:30,868 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d6e90ba-17e0-4134-8b08-19a4ad5d701a/bin/uautomizer-verify-4GaUIPS5ZU/data/27eac1502/e39d5cc424de40b4a197739d3f6c5ff8 [2024-10-31 22:12:30,871 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:12:30,873 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:12:30,874 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:12:30,874 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:12:30,880 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:12:30,881 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:12:30" (1/1) ... [2024-10-31 22:12:30,882 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c69f14a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:30, skipping insertion in model container [2024-10-31 22:12:30,883 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:12:30" (1/1) ... [2024-10-31 22:12:30,953 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:12:31,248 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d6e90ba-17e0-4134-8b08-19a4ad5d701a/sv-benchmarks/c/pthread-wmm/mix007.opt.i[944,957] [2024-10-31 22:12:31,548 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:12:31,559 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:12:31,572 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d6e90ba-17e0-4134-8b08-19a4ad5d701a/sv-benchmarks/c/pthread-wmm/mix007.opt.i[944,957] [2024-10-31 22:12:31,648 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:12:31,697 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:12:31,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:31 WrapperNode [2024-10-31 22:12:31,698 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:12:31,700 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:12:31,700 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:12:31,701 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:12:31,709 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:31" (1/1) ... [2024-10-31 22:12:31,735 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:31" (1/1) ... [2024-10-31 22:12:31,781 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 151 [2024-10-31 22:12:31,782 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:12:31,783 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:12:31,783 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:12:31,783 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:12:31,800 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:31" (1/1) ... [2024-10-31 22:12:31,801 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:31" (1/1) ... [2024-10-31 22:12:31,804 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:31" (1/1) ... [2024-10-31 22:12:31,835 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-31 22:12:31,837 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:31" (1/1) ... [2024-10-31 22:12:31,838 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:31" (1/1) ... [2024-10-31 22:12:31,847 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:31" (1/1) ... [2024-10-31 22:12:31,854 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:31" (1/1) ... [2024-10-31 22:12:31,856 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:31" (1/1) ... [2024-10-31 22:12:31,859 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:31" (1/1) ... [2024-10-31 22:12:31,862 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:12:31,863 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:12:31,864 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:12:31,864 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:12:31,865 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:31" (1/1) ... [2024-10-31 22:12:31,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:12:31,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d6e90ba-17e0-4134-8b08-19a4ad5d701a/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:12:31,907 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d6e90ba-17e0-4134-8b08-19a4ad5d701a/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:12:31,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d6e90ba-17e0-4134-8b08-19a4ad5d701a/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:12:31,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:12:31,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:12:31,948 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-31 22:12:31,948 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-31 22:12:31,948 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-31 22:12:31,948 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-31 22:12:31,948 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-10-31 22:12:31,949 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-10-31 22:12:31,949 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-10-31 22:12:31,949 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-10-31 22:12:31,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:12:31,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:12:31,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:12:31,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:12:31,953 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:12:32,114 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:12:32,119 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:12:32,608 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:12:32,609 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:12:32,852 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:12:32,852 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-31 22:12:32,852 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:12:32 BoogieIcfgContainer [2024-10-31 22:12:32,852 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:12:32,855 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:12:32,855 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:12:32,859 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:12:32,859 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:12:30" (1/3) ... [2024-10-31 22:12:32,860 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f8bb8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:12:32, skipping insertion in model container [2024-10-31 22:12:32,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:12:31" (2/3) ... [2024-10-31 22:12:32,861 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f8bb8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:12:32, skipping insertion in model container [2024-10-31 22:12:32,861 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:12:32" (3/3) ... [2024-10-31 22:12:32,862 INFO L112 eAbstractionObserver]: Analyzing ICFG mix007.opt.i [2024-10-31 22:12:32,883 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:12:32,884 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-31 22:12:32,884 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:12:32,951 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:12:32,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 50 transitions, 116 flow [2024-10-31 22:12:33,036 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2024-10-31 22:12:33,036 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:12:33,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 97 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2024-10-31 22:12:33,044 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 50 transitions, 116 flow [2024-10-31 22:12:33,047 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 46 transitions, 104 flow [2024-10-31 22:12:33,057 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:12:33,064 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@733dbf71, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:12:33,064 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-31 22:12:33,074 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:12:33,074 INFO L124 PetriNetUnfolderBase]: 0/25 cut-off events. [2024-10-31 22:12:33,074 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:12:33,074 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:33,075 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:12:33,076 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-31 22:12:33,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:33,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1282439787, now seen corresponding path program 1 times [2024-10-31 22:12:33,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:33,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624514706] [2024-10-31 22:12:33,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:33,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:33,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:33,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:33,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:33,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624514706] [2024-10-31 22:12:33,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624514706] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:33,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:33,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:12:33,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788179617] [2024-10-31 22:12:33,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:33,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:12:33,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:33,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:12:33,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:12:33,901 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 50 [2024-10-31 22:12:33,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:12:33,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:12:33,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 50 [2024-10-31 22:12:33,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:12:34,489 INFO L124 PetriNetUnfolderBase]: 879/1527 cut-off events. [2024-10-31 22:12:34,489 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:12:34,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2847 conditions, 1527 events. 879/1527 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 10676 event pairs, 159 based on Foata normal form. 60/1531 useless extension candidates. Maximal degree in co-relation 2835. Up to 1009 conditions per place. [2024-10-31 22:12:34,515 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 26 selfloop transitions, 2 changer transitions 2/53 dead transitions. [2024-10-31 22:12:34,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 53 transitions, 178 flow [2024-10-31 22:12:34,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:12:34,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:12:34,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2024-10-31 22:12:34,532 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.76 [2024-10-31 22:12:34,535 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 114 transitions. [2024-10-31 22:12:34,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 53 transitions, 178 flow [2024-10-31 22:12:34,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 53 transitions, 174 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-31 22:12:34,547 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2024-10-31 22:12:34,550 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2024-10-31 22:12:34,555 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2024-10-31 22:12:34,558 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2024-10-31 22:12:34,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:12:34,558 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:34,559 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:12:34,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:12:34,559 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-31 22:12:34,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:34,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1465234930, now seen corresponding path program 1 times [2024-10-31 22:12:34,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:34,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075070613] [2024-10-31 22:12:34,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:34,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:34,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:35,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:35,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:35,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075070613] [2024-10-31 22:12:35,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075070613] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:35,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:35,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:12:35,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080541120] [2024-10-31 22:12:35,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:35,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:12:35,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:35,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:12:35,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:12:35,059 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 50 [2024-10-31 22:12:35,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:12:35,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:12:35,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 50 [2024-10-31 22:12:35,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:12:39,806 INFO L124 PetriNetUnfolderBase]: 13564/20414 cut-off events. [2024-10-31 22:12:39,807 INFO L125 PetriNetUnfolderBase]: For 791/791 co-relation queries the response was YES. [2024-10-31 22:12:39,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40014 conditions, 20414 events. 13564/20414 cut-off events. For 791/791 co-relation queries the response was YES. Maximal size of possible extension queue 1208. Compared 154257 event pairs, 3280 based on Foata normal form. 0/19793 useless extension candidates. Maximal degree in co-relation 40004. Up to 8336 conditions per place. [2024-10-31 22:12:39,976 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 43 selfloop transitions, 8 changer transitions 84/150 dead transitions. [2024-10-31 22:12:39,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 150 transitions, 602 flow [2024-10-31 22:12:39,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 22:12:39,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 22:12:39,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 308 transitions. [2024-10-31 22:12:39,979 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6844444444444444 [2024-10-31 22:12:39,980 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 9 states and 308 transitions. [2024-10-31 22:12:39,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 150 transitions, 602 flow [2024-10-31 22:12:40,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 150 transitions, 584 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:12:40,008 INFO L231 Difference]: Finished difference. Result has 68 places, 49 transitions, 204 flow [2024-10-31 22:12:40,008 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=204, PETRI_PLACES=68, PETRI_TRANSITIONS=49} [2024-10-31 22:12:40,009 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2024-10-31 22:12:40,009 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 49 transitions, 204 flow [2024-10-31 22:12:40,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:12:40,010 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:40,011 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:12:40,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:12:40,012 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-31 22:12:40,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:40,014 INFO L85 PathProgramCache]: Analyzing trace with hash -61773581, now seen corresponding path program 1 times [2024-10-31 22:12:40,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:40,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455592279] [2024-10-31 22:12:40,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:40,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:40,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:40,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:40,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:40,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455592279] [2024-10-31 22:12:40,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455592279] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:40,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:40,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:12:40,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032065120] [2024-10-31 22:12:40,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:40,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:12:40,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:40,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:12:40,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:12:40,428 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 50 [2024-10-31 22:12:40,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 49 transitions, 204 flow. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:12:40,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:12:40,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 50 [2024-10-31 22:12:40,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:12:43,545 INFO L124 PetriNetUnfolderBase]: 9538/15240 cut-off events. [2024-10-31 22:12:43,545 INFO L125 PetriNetUnfolderBase]: For 21293/21293 co-relation queries the response was YES. [2024-10-31 22:12:43,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46617 conditions, 15240 events. 9538/15240 cut-off events. For 21293/21293 co-relation queries the response was YES. Maximal size of possible extension queue 869. Compared 117717 event pairs, 1728 based on Foata normal form. 420/15571 useless extension candidates. Maximal degree in co-relation 46599. Up to 5580 conditions per place. [2024-10-31 22:12:43,667 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 50 selfloop transitions, 9 changer transitions 76/150 dead transitions. [2024-10-31 22:12:43,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 150 transitions, 1006 flow [2024-10-31 22:12:43,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:12:43,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-31 22:12:43,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 312 transitions. [2024-10-31 22:12:43,674 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.624 [2024-10-31 22:12:43,675 INFO L175 Difference]: Start difference. First operand has 68 places, 49 transitions, 204 flow. Second operand 10 states and 312 transitions. [2024-10-31 22:12:43,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 150 transitions, 1006 flow [2024-10-31 22:12:43,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 150 transitions, 856 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-10-31 22:12:43,810 INFO L231 Difference]: Finished difference. Result has 75 places, 54 transitions, 270 flow [2024-10-31 22:12:43,811 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=270, PETRI_PLACES=75, PETRI_TRANSITIONS=54} [2024-10-31 22:12:43,811 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 17 predicate places. [2024-10-31 22:12:43,812 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 54 transitions, 270 flow [2024-10-31 22:12:43,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:12:43,812 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:43,812 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:12:43,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:12:43,813 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-31 22:12:43,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:43,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1980847414, now seen corresponding path program 1 times [2024-10-31 22:12:43,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:43,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840458561] [2024-10-31 22:12:43,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:43,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:43,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:44,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:44,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:44,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840458561] [2024-10-31 22:12:44,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840458561] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:44,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:44,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:12:44,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747821745] [2024-10-31 22:12:44,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:44,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:12:44,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:44,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:12:44,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:12:44,204 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2024-10-31 22:12:44,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 54 transitions, 270 flow. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:12:44,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:12:44,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2024-10-31 22:12:44,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:12:46,586 INFO L124 PetriNetUnfolderBase]: 7093/12369 cut-off events. [2024-10-31 22:12:46,587 INFO L125 PetriNetUnfolderBase]: For 21582/21673 co-relation queries the response was YES. [2024-10-31 22:12:46,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37053 conditions, 12369 events. 7093/12369 cut-off events. For 21582/21673 co-relation queries the response was YES. Maximal size of possible extension queue 742. Compared 103139 event pairs, 2016 based on Foata normal form. 296/12463 useless extension candidates. Maximal degree in co-relation 37028. Up to 7257 conditions per place. [2024-10-31 22:12:46,709 INFO L140 encePairwiseOnDemand]: 44/50 looper letters, 42 selfloop transitions, 6 changer transitions 33/104 dead transitions. [2024-10-31 22:12:46,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 104 transitions, 684 flow [2024-10-31 22:12:46,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:12:46,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:12:46,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 223 transitions. [2024-10-31 22:12:46,712 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6371428571428571 [2024-10-31 22:12:46,712 INFO L175 Difference]: Start difference. First operand has 75 places, 54 transitions, 270 flow. Second operand 7 states and 223 transitions. [2024-10-31 22:12:46,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 104 transitions, 684 flow [2024-10-31 22:12:47,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 104 transitions, 651 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-10-31 22:12:47,082 INFO L231 Difference]: Finished difference. Result has 75 places, 58 transitions, 331 flow [2024-10-31 22:12:47,083 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=331, PETRI_PLACES=75, PETRI_TRANSITIONS=58} [2024-10-31 22:12:47,083 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 17 predicate places. [2024-10-31 22:12:47,086 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 58 transitions, 331 flow [2024-10-31 22:12:47,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:12:47,087 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:47,087 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:12:47,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:12:47,087 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-31 22:12:47,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:47,088 INFO L85 PathProgramCache]: Analyzing trace with hash 499371615, now seen corresponding path program 1 times [2024-10-31 22:12:47,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:47,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167723854] [2024-10-31 22:12:47,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:47,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:47,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:47,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:47,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:47,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167723854] [2024-10-31 22:12:47,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167723854] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:47,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:47,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:12:47,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302536887] [2024-10-31 22:12:47,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:47,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:12:47,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:47,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:12:47,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:12:47,494 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 50 [2024-10-31 22:12:47,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 58 transitions, 331 flow. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 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) [2024-10-31 22:12:47,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:12:47,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 50 [2024-10-31 22:12:47,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:12:49,966 INFO L124 PetriNetUnfolderBase]: 7696/12610 cut-off events. [2024-10-31 22:12:49,966 INFO L125 PetriNetUnfolderBase]: For 27163/27163 co-relation queries the response was YES. [2024-10-31 22:12:50,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41135 conditions, 12610 events. 7696/12610 cut-off events. For 27163/27163 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 98097 event pairs, 1507 based on Foata normal form. 264/12790 useless extension candidates. Maximal degree in co-relation 41108. Up to 4402 conditions per place. [2024-10-31 22:12:50,054 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 63 selfloop transitions, 12 changer transitions 62/152 dead transitions. [2024-10-31 22:12:50,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 152 transitions, 1117 flow [2024-10-31 22:12:50,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:12:50,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-31 22:12:50,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 307 transitions. [2024-10-31 22:12:50,056 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.614 [2024-10-31 22:12:50,056 INFO L175 Difference]: Start difference. First operand has 75 places, 58 transitions, 331 flow. Second operand 10 states and 307 transitions. [2024-10-31 22:12:50,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 152 transitions, 1117 flow [2024-10-31 22:12:50,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 152 transitions, 1055 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-10-31 22:12:50,245 INFO L231 Difference]: Finished difference. Result has 82 places, 64 transitions, 428 flow [2024-10-31 22:12:50,245 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=428, PETRI_PLACES=82, PETRI_TRANSITIONS=64} [2024-10-31 22:12:50,248 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 24 predicate places. [2024-10-31 22:12:50,248 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 64 transitions, 428 flow [2024-10-31 22:12:50,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 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) [2024-10-31 22:12:50,249 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:50,249 INFO L204 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] [2024-10-31 22:12:50,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:12:50,250 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-31 22:12:50,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:50,254 INFO L85 PathProgramCache]: Analyzing trace with hash 716082125, now seen corresponding path program 1 times [2024-10-31 22:12:50,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:50,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635498472] [2024-10-31 22:12:50,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:50,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:50,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:50,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:50,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:50,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635498472] [2024-10-31 22:12:50,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635498472] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:50,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:50,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:12:50,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147015688] [2024-10-31 22:12:50,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:50,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:12:50,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:50,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:12:50,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:12:50,682 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2024-10-31 22:12:50,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 64 transitions, 428 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:12:50,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:12:50,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2024-10-31 22:12:50,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:12:54,705 INFO L124 PetriNetUnfolderBase]: 14876/22628 cut-off events. [2024-10-31 22:12:54,706 INFO L125 PetriNetUnfolderBase]: For 46379/50902 co-relation queries the response was YES. [2024-10-31 22:12:54,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64788 conditions, 22628 events. 14876/22628 cut-off events. For 46379/50902 co-relation queries the response was YES. Maximal size of possible extension queue 1244. Compared 168294 event pairs, 2411 based on Foata normal form. 991/22743 useless extension candidates. Maximal degree in co-relation 64757. Up to 11335 conditions per place. [2024-10-31 22:12:55,002 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 59 selfloop transitions, 6 changer transitions 0/100 dead transitions. [2024-10-31 22:12:55,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 100 transitions, 734 flow [2024-10-31 22:12:55,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:12:55,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:12:55,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 143 transitions. [2024-10-31 22:12:55,005 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.715 [2024-10-31 22:12:55,005 INFO L175 Difference]: Start difference. First operand has 82 places, 64 transitions, 428 flow. Second operand 4 states and 143 transitions. [2024-10-31 22:12:55,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 100 transitions, 734 flow [2024-10-31 22:12:55,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 100 transitions, 712 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-10-31 22:12:55,341 INFO L231 Difference]: Finished difference. Result has 76 places, 69 transitions, 452 flow [2024-10-31 22:12:55,342 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=452, PETRI_PLACES=76, PETRI_TRANSITIONS=69} [2024-10-31 22:12:55,343 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 18 predicate places. [2024-10-31 22:12:55,343 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 69 transitions, 452 flow [2024-10-31 22:12:55,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:12:55,343 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:55,344 INFO L204 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] [2024-10-31 22:12:55,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:12:55,344 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-31 22:12:55,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:55,345 INFO L85 PathProgramCache]: Analyzing trace with hash 742329395, now seen corresponding path program 1 times [2024-10-31 22:12:55,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:55,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187130750] [2024-10-31 22:12:55,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:55,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:55,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:55,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:55,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:55,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187130750] [2024-10-31 22:12:55,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187130750] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:55,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:55,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:12:55,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974084531] [2024-10-31 22:12:55,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:55,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:12:55,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:55,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:12:55,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:12:55,778 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2024-10-31 22:12:55,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 69 transitions, 452 flow. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:12:55,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:12:55,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2024-10-31 22:12:55,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:12:59,634 INFO L124 PetriNetUnfolderBase]: 13153/20225 cut-off events. [2024-10-31 22:12:59,634 INFO L125 PetriNetUnfolderBase]: For 33732/38176 co-relation queries the response was YES. [2024-10-31 22:12:59,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61800 conditions, 20225 events. 13153/20225 cut-off events. For 33732/38176 co-relation queries the response was YES. Maximal size of possible extension queue 1067. Compared 147822 event pairs, 1160 based on Foata normal form. 1031/20553 useless extension candidates. Maximal degree in co-relation 61770. Up to 8164 conditions per place. [2024-10-31 22:12:59,807 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 77 selfloop transitions, 10 changer transitions 0/122 dead transitions. [2024-10-31 22:12:59,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 122 transitions, 908 flow [2024-10-31 22:12:59,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:12:59,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:12:59,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 183 transitions. [2024-10-31 22:12:59,809 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.732 [2024-10-31 22:12:59,809 INFO L175 Difference]: Start difference. First operand has 76 places, 69 transitions, 452 flow. Second operand 5 states and 183 transitions. [2024-10-31 22:12:59,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 122 transitions, 908 flow [2024-10-31 22:12:59,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 122 transitions, 897 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-10-31 22:12:59,846 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 509 flow [2024-10-31 22:12:59,846 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=509, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2024-10-31 22:12:59,847 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 21 predicate places. [2024-10-31 22:12:59,847 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 509 flow [2024-10-31 22:12:59,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:12:59,848 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:59,848 INFO L204 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] [2024-10-31 22:12:59,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:12:59,849 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-31 22:12:59,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:59,849 INFO L85 PathProgramCache]: Analyzing trace with hash -497147943, now seen corresponding path program 1 times [2024-10-31 22:12:59,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:59,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713809488] [2024-10-31 22:12:59,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:59,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:00,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:00,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:00,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713809488] [2024-10-31 22:13:00,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713809488] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:00,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:13:00,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:13:00,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120802637] [2024-10-31 22:13:00,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:00,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:13:00,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:00,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:13:00,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:13:00,384 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2024-10-31 22:13:00,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 509 flow. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:00,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:13:00,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2024-10-31 22:13:00,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand