./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe035_power.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_de877949-34ed-4a26-87d7-648c49bab4ce/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de877949-34ed-4a26-87d7-648c49bab4ce/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_de877949-34ed-4a26-87d7-648c49bab4ce/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de877949-34ed-4a26-87d7-648c49bab4ce/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe035_power.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de877949-34ed-4a26-87d7-648c49bab4ce/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_de877949-34ed-4a26-87d7-648c49bab4ce/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 6415bffc70cf05f8f6460106962f2f9c59b321fd2fc94a45894cc3c1f3d85b66 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:14:12,279 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:14:12,370 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de877949-34ed-4a26-87d7-648c49bab4ce/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:14:12,375 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:14:12,377 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:14:12,411 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:14:12,411 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:14:12,412 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:14:12,413 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:14:12,414 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:14:12,417 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:14:12,417 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:14:12,418 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:14:12,419 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:14:12,419 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:14:12,420 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:14:12,421 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:14:12,422 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:14:12,425 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:14:12,425 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:14:12,426 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:14:12,428 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:14:12,428 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:14:12,429 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:14:12,429 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:14:12,429 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:14:12,443 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:14:12,444 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:14:12,445 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:14:12,446 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:14:12,446 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:14:12,446 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:14:12,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:14:12,447 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:14:12,447 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:14:12,447 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:14:12,448 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:14:12,450 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:14:12,450 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:14:12,450 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:14:12,451 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:14:12,451 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:14:12,452 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_de877949-34ed-4a26-87d7-648c49bab4ce/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de877949-34ed-4a26-87d7-648c49bab4ce/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6415bffc70cf05f8f6460106962f2f9c59b321fd2fc94a45894cc3c1f3d85b66 [2024-10-31 22:14:12,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:14:12,817 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:14:12,821 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:14:12,822 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:14:12,823 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:14:12,824 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de877949-34ed-4a26-87d7-648c49bab4ce/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-wmm/safe035_power.i Unable to find full path for "g++" [2024-10-31 22:14:14,844 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:14:15,136 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:14:15,136 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de877949-34ed-4a26-87d7-648c49bab4ce/sv-benchmarks/c/pthread-wmm/safe035_power.i [2024-10-31 22:14:15,164 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de877949-34ed-4a26-87d7-648c49bab4ce/bin/uautomizer-verify-4GaUIPS5ZU/data/b3eb9cfe5/d78bc091fb684b2c9ed53283d5a0ae33/FLAG797ffcc25 [2024-10-31 22:14:15,199 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de877949-34ed-4a26-87d7-648c49bab4ce/bin/uautomizer-verify-4GaUIPS5ZU/data/b3eb9cfe5/d78bc091fb684b2c9ed53283d5a0ae33 [2024-10-31 22:14:15,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:14:15,205 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:14:15,206 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:14:15,207 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:14:15,214 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:14:15,215 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:14:15" (1/1) ... [2024-10-31 22:14:15,219 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@97282b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:15, skipping insertion in model container [2024-10-31 22:14:15,219 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:14:15" (1/1) ... [2024-10-31 22:14:15,297 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:14:15,518 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_de877949-34ed-4a26-87d7-648c49bab4ce/sv-benchmarks/c/pthread-wmm/safe035_power.i[947,960] [2024-10-31 22:14:15,840 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:14:15,856 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:14:15,872 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_de877949-34ed-4a26-87d7-648c49bab4ce/sv-benchmarks/c/pthread-wmm/safe035_power.i[947,960] [2024-10-31 22:14:15,980 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:14:16,026 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:14:16,027 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:16 WrapperNode [2024-10-31 22:14:16,027 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:14:16,028 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:14:16,029 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:14:16,029 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:14:16,036 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:16" (1/1) ... [2024-10-31 22:14:16,054 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:16" (1/1) ... [2024-10-31 22:14:16,104 INFO L138 Inliner]: procedures = 175, calls = 48, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 165 [2024-10-31 22:14:16,104 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:14:16,105 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:14:16,105 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:14:16,105 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:14:16,118 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:16" (1/1) ... [2024-10-31 22:14:16,119 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:16" (1/1) ... [2024-10-31 22:14:16,126 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:16" (1/1) ... [2024-10-31 22:14:16,161 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 22:14:16,161 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:16" (1/1) ... [2024-10-31 22:14:16,162 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:16" (1/1) ... [2024-10-31 22:14:16,185 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:16" (1/1) ... [2024-10-31 22:14:16,190 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:16" (1/1) ... [2024-10-31 22:14:16,193 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:16" (1/1) ... [2024-10-31 22:14:16,209 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:16" (1/1) ... [2024-10-31 22:14:16,219 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:14:16,220 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:14:16,221 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:14:16,221 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:14:16,226 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:16" (1/1) ... [2024-10-31 22:14:16,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:14:16,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de877949-34ed-4a26-87d7-648c49bab4ce/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:16,295 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de877949-34ed-4a26-87d7-648c49bab4ce/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:14:16,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de877949-34ed-4a26-87d7-648c49bab4ce/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:14:16,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:14:16,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:14:16,389 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-31 22:14:16,389 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-31 22:14:16,389 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-31 22:14:16,389 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-31 22:14:16,389 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-10-31 22:14:16,393 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-10-31 22:14:16,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:14:16,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:14:16,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:14:16,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:14:16,398 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 22:14:16,617 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:14:16,620 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:14:17,225 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:14:17,226 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:14:17,612 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:14:17,612 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-31 22:14:17,613 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:14:17 BoogieIcfgContainer [2024-10-31 22:14:17,614 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:14:17,616 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:14:17,616 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:14:17,620 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:14:17,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:14:15" (1/3) ... [2024-10-31 22:14:17,621 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ba5e09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:14:17, skipping insertion in model container [2024-10-31 22:14:17,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:16" (2/3) ... [2024-10-31 22:14:17,622 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ba5e09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:14:17, skipping insertion in model container [2024-10-31 22:14:17,624 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:14:17" (3/3) ... [2024-10-31 22:14:17,625 INFO L112 eAbstractionObserver]: Analyzing ICFG safe035_power.i [2024-10-31 22:14:17,646 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:14:17,646 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-31 22:14:17,646 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:14:17,717 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:14:17,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 42 transitions, 96 flow [2024-10-31 22:14:17,806 INFO L124 PetriNetUnfolderBase]: 1/39 cut-off events. [2024-10-31 22:14:17,807 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:14:17,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 39 events. 1/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 75 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2024-10-31 22:14:17,810 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 42 transitions, 96 flow [2024-10-31 22:14:17,814 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 39 transitions, 87 flow [2024-10-31 22:14:17,824 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:14:17,831 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;@69e1caf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:14:17,832 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-10-31 22:14:17,839 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:14:17,840 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2024-10-31 22:14:17,840 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:14:17,840 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:14:17,841 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:14:17,841 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-31 22:14:17,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:17,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1597382317, now seen corresponding path program 1 times [2024-10-31 22:14:17,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:17,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018316319] [2024-10-31 22:14:17,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:17,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:17,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:18,559 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 22:14:18,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:18,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018316319] [2024-10-31 22:14:18,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018316319] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:14:18,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:14:18,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:14:18,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926239186] [2024-10-31 22:14:18,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:14:18,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:14:18,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:18,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:14:18,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:14:18,625 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2024-10-31 22:14:18,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 22:14:18,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:14:18,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2024-10-31 22:14:18,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:14:19,882 INFO L124 PetriNetUnfolderBase]: 1951/3088 cut-off events. [2024-10-31 22:14:19,883 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-10-31 22:14:19,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5983 conditions, 3088 events. 1951/3088 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 18876 event pairs, 266 based on Foata normal form. 120/3172 useless extension candidates. Maximal degree in co-relation 5972. Up to 2386 conditions per place. [2024-10-31 22:14:19,913 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 33 selfloop transitions, 2 changer transitions 2/50 dead transitions. [2024-10-31 22:14:19,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 50 transitions, 183 flow [2024-10-31 22:14:19,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:14:19,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:14:19,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2024-10-31 22:14:19,928 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6984126984126984 [2024-10-31 22:14:19,930 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 87 flow. Second operand 3 states and 88 transitions. [2024-10-31 22:14:19,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 50 transitions, 183 flow [2024-10-31 22:14:19,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 50 transitions, 180 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:14:19,939 INFO L231 Difference]: Finished difference. Result has 46 places, 36 transitions, 82 flow [2024-10-31 22:14:19,941 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=46, PETRI_TRANSITIONS=36} [2024-10-31 22:14:19,948 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, -2 predicate places. [2024-10-31 22:14:19,948 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 36 transitions, 82 flow [2024-10-31 22:14:19,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 22:14:19,948 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:14:19,949 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:14:19,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:14:19,949 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-31 22:14:19,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:19,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1890798407, now seen corresponding path program 1 times [2024-10-31 22:14:19,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:19,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44391194] [2024-10-31 22:14:19,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:19,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:20,433 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 22:14:20,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:20,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44391194] [2024-10-31 22:14:20,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44391194] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:14:20,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:14:20,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:14:20,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210638754] [2024-10-31 22:14:20,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:14:20,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:14:20,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:20,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:14:20,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:14:20,448 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-10-31 22:14:20,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 36 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 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 22:14:20,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:14:20,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-10-31 22:14:20,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:14:21,995 INFO L124 PetriNetUnfolderBase]: 2423/3832 cut-off events. [2024-10-31 22:14:21,995 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2024-10-31 22:14:22,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7578 conditions, 3832 events. 2423/3832 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 24159 event pairs, 661 based on Foata normal form. 0/3748 useless extension candidates. Maximal degree in co-relation 7568. Up to 1372 conditions per place. [2024-10-31 22:14:22,017 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 32 selfloop transitions, 2 changer transitions 53/98 dead transitions. [2024-10-31 22:14:22,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 98 transitions, 384 flow [2024-10-31 22:14:22,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:14:22,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:14:22,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-10-31 22:14:22,020 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5982142857142857 [2024-10-31 22:14:22,020 INFO L175 Difference]: Start difference. First operand has 46 places, 36 transitions, 82 flow. Second operand 8 states and 201 transitions. [2024-10-31 22:14:22,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 98 transitions, 384 flow [2024-10-31 22:14:22,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 98 transitions, 376 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:14:22,025 INFO L231 Difference]: Finished difference. Result has 55 places, 35 transitions, 92 flow [2024-10-31 22:14:22,025 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=92, PETRI_PLACES=55, PETRI_TRANSITIONS=35} [2024-10-31 22:14:22,026 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 7 predicate places. [2024-10-31 22:14:22,026 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 35 transitions, 92 flow [2024-10-31 22:14:22,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 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 22:14:22,027 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:14:22,027 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 22:14:22,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:14:22,028 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-31 22:14:22,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:22,029 INFO L85 PathProgramCache]: Analyzing trace with hash 286561760, now seen corresponding path program 1 times [2024-10-31 22:14:22,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:22,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186638393] [2024-10-31 22:14:22,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:22,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:22,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:24,143 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 22:14:24,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:24,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186638393] [2024-10-31 22:14:24,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186638393] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:14:24,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:14:24,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 22:14:24,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620601460] [2024-10-31 22:14:24,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:14:24,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 22:14:24,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:24,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 22:14:24,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:14:24,163 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 42 [2024-10-31 22:14:24,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 35 transitions, 92 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 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 22:14:24,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:14:24,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 42 [2024-10-31 22:14:24,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:14:26,687 INFO L124 PetriNetUnfolderBase]: 3661/5794 cut-off events. [2024-10-31 22:14:26,688 INFO L125 PetriNetUnfolderBase]: For 730/730 co-relation queries the response was YES. [2024-10-31 22:14:26,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12528 conditions, 5794 events. 3661/5794 cut-off events. For 730/730 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 37061 event pairs, 543 based on Foata normal form. 135/5911 useless extension candidates. Maximal degree in co-relation 12513. Up to 2389 conditions per place. [2024-10-31 22:14:26,728 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 53 selfloop transitions, 15 changer transitions 47/125 dead transitions. [2024-10-31 22:14:26,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 125 transitions, 518 flow [2024-10-31 22:14:26,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:14:26,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-31 22:14:26,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 247 transitions. [2024-10-31 22:14:26,734 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5880952380952381 [2024-10-31 22:14:26,735 INFO L175 Difference]: Start difference. First operand has 55 places, 35 transitions, 92 flow. Second operand 10 states and 247 transitions. [2024-10-31 22:14:26,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 125 transitions, 518 flow [2024-10-31 22:14:26,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 125 transitions, 494 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-10-31 22:14:26,833 INFO L231 Difference]: Finished difference. Result has 59 places, 48 transitions, 201 flow [2024-10-31 22:14:26,833 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=201, PETRI_PLACES=59, PETRI_TRANSITIONS=48} [2024-10-31 22:14:26,834 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 11 predicate places. [2024-10-31 22:14:26,835 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 48 transitions, 201 flow [2024-10-31 22:14:26,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 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 22:14:26,836 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:14:26,836 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] [2024-10-31 22:14:26,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:14:26,837 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-31 22:14:26,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:26,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1248427591, now seen corresponding path program 1 times [2024-10-31 22:14:26,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:26,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542867096] [2024-10-31 22:14:26,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:26,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:26,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:28,439 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 22:14:28,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:28,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542867096] [2024-10-31 22:14:28,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542867096] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:14:28,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:14:28,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 22:14:28,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218714845] [2024-10-31 22:14:28,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:14:28,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 22:14:28,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:28,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 22:14:28,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:14:28,452 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 42 [2024-10-31 22:14:28,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 48 transitions, 201 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 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 22:14:28,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:14:28,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 42 [2024-10-31 22:14:28,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:14:31,305 INFO L124 PetriNetUnfolderBase]: 4136/6596 cut-off events. [2024-10-31 22:14:31,305 INFO L125 PetriNetUnfolderBase]: For 6750/6770 co-relation queries the response was YES. [2024-10-31 22:14:31,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19896 conditions, 6596 events. 4136/6596 cut-off events. For 6750/6770 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 43690 event pairs, 442 based on Foata normal form. 65/6643 useless extension candidates. Maximal degree in co-relation 19878. Up to 2790 conditions per place. [2024-10-31 22:14:31,367 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 73 selfloop transitions, 20 changer transitions 38/141 dead transitions. [2024-10-31 22:14:31,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 141 transitions, 881 flow [2024-10-31 22:14:31,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-31 22:14:31,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-31 22:14:31,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 275 transitions. [2024-10-31 22:14:31,370 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5456349206349206 [2024-10-31 22:14:31,370 INFO L175 Difference]: Start difference. First operand has 59 places, 48 transitions, 201 flow. Second operand 12 states and 275 transitions. [2024-10-31 22:14:31,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 141 transitions, 881 flow [2024-10-31 22:14:31,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 141 transitions, 858 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-10-31 22:14:31,399 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 383 flow [2024-10-31 22:14:31,400 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=383, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2024-10-31 22:14:31,402 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 22 predicate places. [2024-10-31 22:14:31,403 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 383 flow [2024-10-31 22:14:31,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 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 22:14:31,403 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:14:31,404 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] [2024-10-31 22:14:31,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:14:31,404 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-31 22:14:31,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:31,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1719423301, now seen corresponding path program 2 times [2024-10-31 22:14:31,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:31,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802954450] [2024-10-31 22:14:31,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:31,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:31,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:31,877 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 22:14:31,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:31,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802954450] [2024-10-31 22:14:31,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802954450] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:14:31,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:14:31,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:14:31,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044882122] [2024-10-31 22:14:31,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:14:31,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:14:31,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:31,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:14:31,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:14:31,887 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-10-31 22:14:31,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 383 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 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 22:14:31,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:14:31,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-10-31 22:14:31,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:14:34,040 INFO L124 PetriNetUnfolderBase]: 5898/9037 cut-off events. [2024-10-31 22:14:34,042 INFO L125 PetriNetUnfolderBase]: For 35249/35379 co-relation queries the response was YES. [2024-10-31 22:14:34,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35217 conditions, 9037 events. 5898/9037 cut-off events. For 35249/35379 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 55967 event pairs, 832 based on Foata normal form. 565/9555 useless extension candidates. Maximal degree in co-relation 35193. Up to 4184 conditions per place. [2024-10-31 22:14:34,170 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 99 selfloop transitions, 5 changer transitions 6/123 dead transitions. [2024-10-31 22:14:34,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 123 transitions, 1017 flow [2024-10-31 22:14:34,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:14:34,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:14:34,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2024-10-31 22:14:34,176 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6547619047619048 [2024-10-31 22:14:34,176 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 383 flow. Second operand 4 states and 110 transitions. [2024-10-31 22:14:34,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 123 transitions, 1017 flow [2024-10-31 22:14:34,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 123 transitions, 981 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-10-31 22:14:34,265 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 401 flow [2024-10-31 22:14:34,265 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=401, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2024-10-31 22:14:34,266 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 17 predicate places. [2024-10-31 22:14:34,266 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 401 flow [2024-10-31 22:14:34,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 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 22:14:34,267 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:14:34,267 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 22:14:34,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:14:34,267 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-31 22:14:34,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:34,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1533968904, now seen corresponding path program 1 times [2024-10-31 22:14:34,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:34,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724527917] [2024-10-31 22:14:34,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:34,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:34,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:34,672 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 22:14:34,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:34,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724527917] [2024-10-31 22:14:34,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724527917] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:14:34,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:14:34,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:14:34,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58428424] [2024-10-31 22:14:34,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:14:34,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:14:34,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:34,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:14:34,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:14:34,691 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-10-31 22:14:34,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 401 flow. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 22:14:34,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:14:34,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-10-31 22:14:34,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:14:36,028 INFO L124 PetriNetUnfolderBase]: 4475/6982 cut-off events. [2024-10-31 22:14:36,029 INFO L125 PetriNetUnfolderBase]: For 26026/26142 co-relation queries the response was YES. [2024-10-31 22:14:36,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28149 conditions, 6982 events. 4475/6982 cut-off events. For 26026/26142 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 42094 event pairs, 736 based on Foata normal form. 404/7339 useless extension candidates. Maximal degree in co-relation 28125. Up to 2574 conditions per place. [2024-10-31 22:14:36,080 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 99 selfloop transitions, 8 changer transitions 12/132 dead transitions. [2024-10-31 22:14:36,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 132 transitions, 1092 flow [2024-10-31 22:14:36,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:14:36,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:14:36,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 141 transitions. [2024-10-31 22:14:36,083 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6714285714285714 [2024-10-31 22:14:36,083 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 401 flow. Second operand 5 states and 141 transitions. [2024-10-31 22:14:36,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 132 transitions, 1092 flow [2024-10-31 22:14:36,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 132 transitions, 1089 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:14:36,113 INFO L231 Difference]: Finished difference. Result has 70 places, 66 transitions, 439 flow [2024-10-31 22:14:36,117 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=439, PETRI_PLACES=70, PETRI_TRANSITIONS=66} [2024-10-31 22:14:36,118 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 22 predicate places. [2024-10-31 22:14:36,118 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 66 transitions, 439 flow [2024-10-31 22:14:36,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 22:14:36,118 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:14:36,119 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] [2024-10-31 22:14:36,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:14:36,119 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-31 22:14:36,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:36,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1491675154, now seen corresponding path program 1 times [2024-10-31 22:14:36,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:36,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551726223] [2024-10-31 22:14:36,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:36,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:38,725 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 22:14:38,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:38,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551726223] [2024-10-31 22:14:38,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551726223] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:14:38,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:14:38,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 22:14:38,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808797793] [2024-10-31 22:14:38,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:14:38,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 22:14:38,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:38,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 22:14:38,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:14:38,739 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 42 [2024-10-31 22:14:38,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 66 transitions, 439 flow. Second operand has 9 states, 9 states have (on average 15.11111111111111) internal successors, (136), 9 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:14:38,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:14:38,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 42 [2024-10-31 22:14:38,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:14:40,743 INFO L124 PetriNetUnfolderBase]: 3424/6083 cut-off events. [2024-10-31 22:14:40,743 INFO L125 PetriNetUnfolderBase]: For 20206/21314 co-relation queries the response was YES. [2024-10-31 22:14:40,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24252 conditions, 6083 events. 3424/6083 cut-off events. For 20206/21314 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 43917 event pairs, 583 based on Foata normal form. 185/5890 useless extension candidates. Maximal degree in co-relation 24225. Up to 1940 conditions per place. [2024-10-31 22:14:40,781 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 52 selfloop transitions, 13 changer transitions 70/153 dead transitions. [2024-10-31 22:14:40,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 153 transitions, 1353 flow [2024-10-31 22:14:40,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-31 22:14:40,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-31 22:14:40,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 285 transitions. [2024-10-31 22:14:40,784 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.521978021978022 [2024-10-31 22:14:40,784 INFO L175 Difference]: Start difference. First operand has 70 places, 66 transitions, 439 flow. Second operand 13 states and 285 transitions. [2024-10-31 22:14:40,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 153 transitions, 1353 flow [2024-10-31 22:14:40,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 153 transitions, 1329 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-31 22:14:40,824 INFO L231 Difference]: Finished difference. Result has 88 places, 62 transitions, 475 flow [2024-10-31 22:14:40,824 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=475, PETRI_PLACES=88, PETRI_TRANSITIONS=62} [2024-10-31 22:14:40,825 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 40 predicate places. [2024-10-31 22:14:40,825 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 62 transitions, 475 flow [2024-10-31 22:14:40,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.11111111111111) internal successors, (136), 9 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:14:40,826 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:14:40,827 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] [2024-10-31 22:14:40,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:14:40,827 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-31 22:14:40,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:40,828 INFO L85 PathProgramCache]: Analyzing trace with hash 70659006, now seen corresponding path program 2 times [2024-10-31 22:14:40,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:40,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730607784] [2024-10-31 22:14:40,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:40,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:40,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:41,271 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 22:14:41,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:41,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730607784] [2024-10-31 22:14:41,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730607784] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:14:41,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:14:41,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:14:41,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625924473] [2024-10-31 22:14:41,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:14:41,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:14:41,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:41,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:14:41,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:14:41,287 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-10-31 22:14:41,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 62 transitions, 475 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) [2024-10-31 22:14:41,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:14:41,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-10-31 22:14:41,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand