./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0118e2-81c6-4466-8f9c-3082b7a28b70/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0118e2-81c6-4466-8f9c-3082b7a28b70/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_0a0118e2-81c6-4466-8f9c-3082b7a28b70/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0118e2-81c6-4466-8f9c-3082b7a28b70/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0118e2-81c6-4466-8f9c-3082b7a28b70/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0118e2-81c6-4466-8f9c-3082b7a28b70/bin/uautomizer-verify-4GaUIPS5ZU --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 103efe8931e099ca6c2446ad32c4c46818a6d213fc850bc42032bda38d601e6f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:03:18,135 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:03:18,220 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0118e2-81c6-4466-8f9c-3082b7a28b70/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-31 22:03:18,225 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:03:18,225 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:03:18,250 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:03:18,251 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:03:18,251 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:03:18,252 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:03:18,254 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:03:18,254 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:03:18,255 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:03:18,257 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:03:18,257 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:03:18,260 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:03:18,261 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:03:18,261 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:03:18,262 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:03:18,262 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:03:18,262 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:03:18,263 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:03:18,263 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:03:18,265 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:03:18,266 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:03:18,266 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:03:18,268 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-31 22:03:18,269 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:03:18,269 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:03:18,269 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:03:18,270 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:03:18,270 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:03:18,270 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:03:18,275 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:03:18,275 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:03:18,275 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:03:18,276 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:03:18,276 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:03:18,276 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:03:18,276 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:03:18,277 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:03:18,277 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:03:18,278 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:03:18,279 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:03:18,279 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:03:18,279 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_0a0118e2-81c6-4466-8f9c-3082b7a28b70/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0118e2-81c6-4466-8f9c-3082b7a28b70/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 103efe8931e099ca6c2446ad32c4c46818a6d213fc850bc42032bda38d601e6f [2024-10-31 22:03:18,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:03:18,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:03:18,641 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:03:18,643 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:03:18,644 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:03:18,645 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0118e2-81c6-4466-8f9c-3082b7a28b70/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c Unable to find full path for "g++" [2024-10-31 22:03:20,802 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:03:21,030 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:03:21,031 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0118e2-81c6-4466-8f9c-3082b7a28b70/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2024-10-31 22:03:21,043 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0118e2-81c6-4466-8f9c-3082b7a28b70/bin/uautomizer-verify-4GaUIPS5ZU/data/8be555632/d92e0bbf67f546b6a4598f8a898dfce8/FLAGf9fe625f3 [2024-10-31 22:03:21,062 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0118e2-81c6-4466-8f9c-3082b7a28b70/bin/uautomizer-verify-4GaUIPS5ZU/data/8be555632/d92e0bbf67f546b6a4598f8a898dfce8 [2024-10-31 22:03:21,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:03:21,067 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:03:21,069 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:03:21,069 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:03:21,077 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:03:21,078 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:03:21" (1/1) ... [2024-10-31 22:03:21,080 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1139ec8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:21, skipping insertion in model container [2024-10-31 22:03:21,080 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:03:21" (1/1) ... [2024-10-31 22:03:21,118 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:03:21,361 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:03:21,373 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:03:21,403 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:03:21,421 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:03:21,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:21 WrapperNode [2024-10-31 22:03:21,422 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:03:21,423 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:03:21,423 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:03:21,423 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:03:21,433 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:21" (1/1) ... [2024-10-31 22:03:21,442 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:21" (1/1) ... [2024-10-31 22:03:21,471 INFO L138 Inliner]: procedures = 21, calls = 31, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 153 [2024-10-31 22:03:21,471 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:03:21,472 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:03:21,473 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:03:21,473 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:03:21,487 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:21" (1/1) ... [2024-10-31 22:03:21,487 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:21" (1/1) ... [2024-10-31 22:03:21,490 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:21" (1/1) ... [2024-10-31 22:03:21,506 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 22:03:21,506 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:21" (1/1) ... [2024-10-31 22:03:21,506 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:21" (1/1) ... [2024-10-31 22:03:21,512 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:21" (1/1) ... [2024-10-31 22:03:21,516 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:21" (1/1) ... [2024-10-31 22:03:21,523 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:21" (1/1) ... [2024-10-31 22:03:21,525 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:21" (1/1) ... [2024-10-31 22:03:21,531 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:03:21,532 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:03:21,532 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:03:21,532 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:03:21,533 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:21" (1/1) ... [2024-10-31 22:03:21,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:03:21,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0118e2-81c6-4466-8f9c-3082b7a28b70/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:03:21,572 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0118e2-81c6-4466-8f9c-3082b7a28b70/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:03:21,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0118e2-81c6-4466-8f9c-3082b7a28b70/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:03:21,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:03:21,601 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-31 22:03:21,602 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-31 22:03:21,602 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-31 22:03:21,602 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-31 22:03:21,602 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-31 22:03:21,602 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-31 22:03:21,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:03:21,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:03:21,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:03:21,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:03:21,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:03:21,605 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 22:03:21,724 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:03:21,727 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:03:22,147 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:03:22,147 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:03:22,492 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:03:22,492 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-31 22:03:22,493 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:03:22 BoogieIcfgContainer [2024-10-31 22:03:22,493 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:03:22,497 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:03:22,497 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:03:22,500 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:03:22,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:03:21" (1/3) ... [2024-10-31 22:03:22,502 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eba9767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:03:22, skipping insertion in model container [2024-10-31 22:03:22,502 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:21" (2/3) ... [2024-10-31 22:03:22,504 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eba9767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:03:22, skipping insertion in model container [2024-10-31 22:03:22,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:03:22" (3/3) ... [2024-10-31 22:03:22,505 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-5.wvr.c [2024-10-31 22:03:22,520 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:03:22,520 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-10-31 22:03:22,520 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:03:22,595 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-31 22:03:22,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 51 transitions, 123 flow [2024-10-31 22:03:22,688 INFO L124 PetriNetUnfolderBase]: 4/48 cut-off events. [2024-10-31 22:03:22,688 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-31 22:03:22,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 4/48 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 175 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2024-10-31 22:03:22,693 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 51 transitions, 123 flow [2024-10-31 22:03:22,697 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 45 transitions, 102 flow [2024-10-31 22:03:22,712 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:03:22,721 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;@33bdaebd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:03:22,721 INFO L334 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2024-10-31 22:03:22,733 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:03:22,733 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2024-10-31 22:03:22,733 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-31 22:03:22,733 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:03:22,734 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:22,736 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-31 22:03:22,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:22,747 INFO L85 PathProgramCache]: Analyzing trace with hash -227874788, now seen corresponding path program 1 times [2024-10-31 22:03:22,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:22,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091135883] [2024-10-31 22:03:22,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:22,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:23,119 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 22:03:23,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:23,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091135883] [2024-10-31 22:03:23,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091135883] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:23,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:23,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:03:23,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994526605] [2024-10-31 22:03:23,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:23,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:03:23,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:23,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:03:23,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:03:23,189 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-10-31 22:03:23,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 22:03:23,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:03:23,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-10-31 22:03:23,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:03:24,323 INFO L124 PetriNetUnfolderBase]: 3956/5895 cut-off events. [2024-10-31 22:03:24,323 INFO L125 PetriNetUnfolderBase]: For 370/370 co-relation queries the response was YES. [2024-10-31 22:03:24,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12203 conditions, 5895 events. 3956/5895 cut-off events. For 370/370 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 35745 event pairs, 1293 based on Foata normal form. 0/3266 useless extension candidates. Maximal degree in co-relation 11894. Up to 3272 conditions per place. [2024-10-31 22:03:24,378 INFO L140 encePairwiseOnDemand]: 36/51 looper letters, 55 selfloop transitions, 9 changer transitions 0/72 dead transitions. [2024-10-31 22:03:24,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 72 transitions, 293 flow [2024-10-31 22:03:24,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:03:24,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:03:24,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-10-31 22:03:24,394 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6862745098039216 [2024-10-31 22:03:24,396 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 102 flow. Second operand 3 states and 105 transitions. [2024-10-31 22:03:24,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 72 transitions, 293 flow [2024-10-31 22:03:24,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 72 transitions, 283 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-31 22:03:24,413 INFO L231 Difference]: Finished difference. Result has 49 places, 51 transitions, 168 flow [2024-10-31 22:03:24,416 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=49, PETRI_TRANSITIONS=51} [2024-10-31 22:03:24,420 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2024-10-31 22:03:24,423 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 51 transitions, 168 flow [2024-10-31 22:03:24,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 22:03:24,423 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:03:24,423 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:24,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:03:24,424 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-31 22:03:24,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:24,425 INFO L85 PathProgramCache]: Analyzing trace with hash -227874751, now seen corresponding path program 1 times [2024-10-31 22:03:24,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:24,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927214946] [2024-10-31 22:03:24,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:24,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:24,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:24,644 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 22:03:24,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:24,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927214946] [2024-10-31 22:03:24,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927214946] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:24,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:24,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:03:24,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800055596] [2024-10-31 22:03:24,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:24,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:03:24,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:24,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:03:24,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:03:24,659 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-10-31 22:03:24,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 51 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 22:03:24,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:03:24,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-10-31 22:03:24,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:03:25,867 INFO L124 PetriNetUnfolderBase]: 5902/8593 cut-off events. [2024-10-31 22:03:25,868 INFO L125 PetriNetUnfolderBase]: For 1626/1626 co-relation queries the response was YES. [2024-10-31 22:03:25,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20433 conditions, 8593 events. 5902/8593 cut-off events. For 1626/1626 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 51562 event pairs, 1285 based on Foata normal form. 352/5994 useless extension candidates. Maximal degree in co-relation 17726. Up to 5702 conditions per place. [2024-10-31 22:03:25,960 INFO L140 encePairwiseOnDemand]: 36/51 looper letters, 65 selfloop transitions, 11 changer transitions 0/84 dead transitions. [2024-10-31 22:03:25,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 84 transitions, 423 flow [2024-10-31 22:03:25,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:03:25,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:03:25,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-10-31 22:03:25,962 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6601307189542484 [2024-10-31 22:03:25,962 INFO L175 Difference]: Start difference. First operand has 49 places, 51 transitions, 168 flow. Second operand 3 states and 101 transitions. [2024-10-31 22:03:25,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 84 transitions, 423 flow [2024-10-31 22:03:26,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 84 transitions, 397 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:03:26,014 INFO L231 Difference]: Finished difference. Result has 51 places, 61 transitions, 258 flow [2024-10-31 22:03:26,014 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=51, PETRI_TRANSITIONS=61} [2024-10-31 22:03:26,015 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2024-10-31 22:03:26,016 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 61 transitions, 258 flow [2024-10-31 22:03:26,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 22:03:26,016 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:03:26,017 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:26,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:03:26,017 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-31 22:03:26,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:26,018 INFO L85 PathProgramCache]: Analyzing trace with hash -227874749, now seen corresponding path program 1 times [2024-10-31 22:03:26,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:26,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569577520] [2024-10-31 22:03:26,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:26,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:26,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:26,152 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 22:03:26,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:26,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569577520] [2024-10-31 22:03:26,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569577520] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:26,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:26,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:03:26,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133687691] [2024-10-31 22:03:26,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:26,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:03:26,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:26,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:03:26,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:03:26,157 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-10-31 22:03:26,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 61 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 22:03:26,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:03:26,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-10-31 22:03:26,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:03:27,105 INFO L124 PetriNetUnfolderBase]: 5504/8013 cut-off events. [2024-10-31 22:03:27,105 INFO L125 PetriNetUnfolderBase]: For 2212/2212 co-relation queries the response was YES. [2024-10-31 22:03:27,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21509 conditions, 8013 events. 5504/8013 cut-off events. For 2212/2212 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 48137 event pairs, 3350 based on Foata normal form. 0/5618 useless extension candidates. Maximal degree in co-relation 18630. Up to 7747 conditions per place. [2024-10-31 22:03:27,249 INFO L140 encePairwiseOnDemand]: 49/51 looper letters, 50 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2024-10-31 22:03:27,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 59 transitions, 352 flow [2024-10-31 22:03:27,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:03:27,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:03:27,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2024-10-31 22:03:27,252 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-10-31 22:03:27,253 INFO L175 Difference]: Start difference. First operand has 51 places, 61 transitions, 258 flow. Second operand 3 states and 68 transitions. [2024-10-31 22:03:27,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 59 transitions, 352 flow [2024-10-31 22:03:27,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 59 transitions, 330 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:03:27,288 INFO L231 Difference]: Finished difference. Result has 50 places, 59 transitions, 230 flow [2024-10-31 22:03:27,289 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=50, PETRI_TRANSITIONS=59} [2024-10-31 22:03:27,290 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2024-10-31 22:03:27,290 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 59 transitions, 230 flow [2024-10-31 22:03:27,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 22:03:27,291 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:03:27,292 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:27,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:03:27,292 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-31 22:03:27,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:27,294 INFO L85 PathProgramCache]: Analyzing trace with hash -227874786, now seen corresponding path program 1 times [2024-10-31 22:03:27,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:27,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010447221] [2024-10-31 22:03:27,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:27,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:27,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:27,382 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 22:03:27,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:27,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010447221] [2024-10-31 22:03:27,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010447221] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:27,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:27,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:03:27,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104473326] [2024-10-31 22:03:27,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:27,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:03:27,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:27,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:03:27,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:03:27,386 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-10-31 22:03:27,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 59 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 22:03:27,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:03:27,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-10-31 22:03:27,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:03:28,272 INFO L124 PetriNetUnfolderBase]: 5106/7449 cut-off events. [2024-10-31 22:03:28,272 INFO L125 PetriNetUnfolderBase]: For 1036/1036 co-relation queries the response was YES. [2024-10-31 22:03:28,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19159 conditions, 7449 events. 5106/7449 cut-off events. For 1036/1036 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 44440 event pairs, 3136 based on Foata normal form. 0/5063 useless extension candidates. Maximal degree in co-relation 19149. Up to 7195 conditions per place. [2024-10-31 22:03:28,333 INFO L140 encePairwiseOnDemand]: 49/51 looper letters, 48 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2024-10-31 22:03:28,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 57 transitions, 320 flow [2024-10-31 22:03:28,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:03:28,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:03:28,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2024-10-31 22:03:28,336 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43790849673202614 [2024-10-31 22:03:28,336 INFO L175 Difference]: Start difference. First operand has 50 places, 59 transitions, 230 flow. Second operand 3 states and 67 transitions. [2024-10-31 22:03:28,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 57 transitions, 320 flow [2024-10-31 22:03:28,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 57 transitions, 319 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:03:28,340 INFO L231 Difference]: Finished difference. Result has 50 places, 57 transitions, 223 flow [2024-10-31 22:03:28,341 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=223, PETRI_PLACES=50, PETRI_TRANSITIONS=57} [2024-10-31 22:03:28,343 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2024-10-31 22:03:28,343 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 57 transitions, 223 flow [2024-10-31 22:03:28,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 22:03:28,344 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:03:28,345 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:28,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:03:28,345 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-31 22:03:28,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:28,346 INFO L85 PathProgramCache]: Analyzing trace with hash -227874785, now seen corresponding path program 1 times [2024-10-31 22:03:28,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:28,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71668255] [2024-10-31 22:03:28,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:28,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:28,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:28,423 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 22:03:28,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:28,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71668255] [2024-10-31 22:03:28,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71668255] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:28,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:28,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:03:28,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730255224] [2024-10-31 22:03:28,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:28,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:03:28,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:28,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:03:28,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:03:28,429 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-10-31 22:03:28,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 57 transitions, 223 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 22:03:28,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:03:28,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-10-31 22:03:28,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:03:29,436 INFO L124 PetriNetUnfolderBase]: 6094/9139 cut-off events. [2024-10-31 22:03:29,437 INFO L125 PetriNetUnfolderBase]: For 1928/1928 co-relation queries the response was YES. [2024-10-31 22:03:29,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23650 conditions, 9139 events. 6094/9139 cut-off events. For 1928/1928 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 57878 event pairs, 2367 based on Foata normal form. 332/6702 useless extension candidates. Maximal degree in co-relation 23639. Up to 4976 conditions per place. [2024-10-31 22:03:29,500 INFO L140 encePairwiseOnDemand]: 45/51 looper letters, 85 selfloop transitions, 3 changer transitions 0/96 dead transitions. [2024-10-31 22:03:29,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 96 transitions, 554 flow [2024-10-31 22:03:29,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:03:29,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:03:29,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2024-10-31 22:03:29,504 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6339869281045751 [2024-10-31 22:03:29,504 INFO L175 Difference]: Start difference. First operand has 50 places, 57 transitions, 223 flow. Second operand 3 states and 97 transitions. [2024-10-31 22:03:29,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 96 transitions, 554 flow [2024-10-31 22:03:29,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 96 transitions, 553 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:03:29,508 INFO L231 Difference]: Finished difference. Result has 52 places, 59 transitions, 259 flow [2024-10-31 22:03:29,509 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=259, PETRI_PLACES=52, PETRI_TRANSITIONS=59} [2024-10-31 22:03:29,510 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2024-10-31 22:03:29,512 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 59 transitions, 259 flow [2024-10-31 22:03:29,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 22:03:29,512 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:03:29,512 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:29,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:03:29,513 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-31 22:03:29,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:29,513 INFO L85 PathProgramCache]: Analyzing trace with hash -958908139, now seen corresponding path program 1 times [2024-10-31 22:03:29,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:29,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563611702] [2024-10-31 22:03:29,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:29,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:29,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:29,586 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 22:03:29,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:29,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563611702] [2024-10-31 22:03:29,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563611702] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:29,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:29,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:03:29,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565572511] [2024-10-31 22:03:29,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:29,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:03:29,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:29,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:03:29,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:03:29,591 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-10-31 22:03:29,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 59 transitions, 259 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:29,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:03:29,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-10-31 22:03:29,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:03:30,664 INFO L124 PetriNetUnfolderBase]: 6694/10149 cut-off events. [2024-10-31 22:03:30,664 INFO L125 PetriNetUnfolderBase]: For 3166/3166 co-relation queries the response was YES. [2024-10-31 22:03:30,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27746 conditions, 10149 events. 6694/10149 cut-off events. For 3166/3166 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 66089 event pairs, 1906 based on Foata normal form. 232/7367 useless extension candidates. Maximal degree in co-relation 27733. Up to 6461 conditions per place. [2024-10-31 22:03:30,744 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 83 selfloop transitions, 5 changer transitions 0/96 dead transitions. [2024-10-31 22:03:30,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 96 transitions, 610 flow [2024-10-31 22:03:30,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:03:30,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:03:30,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-10-31 22:03:30,746 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6209150326797386 [2024-10-31 22:03:30,746 INFO L175 Difference]: Start difference. First operand has 52 places, 59 transitions, 259 flow. Second operand 3 states and 95 transitions. [2024-10-31 22:03:30,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 96 transitions, 610 flow [2024-10-31 22:03:30,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 96 transitions, 605 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:03:30,749 INFO L231 Difference]: Finished difference. Result has 55 places, 63 transitions, 320 flow [2024-10-31 22:03:30,750 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=320, PETRI_PLACES=55, PETRI_TRANSITIONS=63} [2024-10-31 22:03:30,751 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2024-10-31 22:03:30,751 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 63 transitions, 320 flow [2024-10-31 22:03:30,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:30,751 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:03:30,752 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:30,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:03:30,752 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-31 22:03:30,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:30,753 INFO L85 PathProgramCache]: Analyzing trace with hash -958908140, now seen corresponding path program 1 times [2024-10-31 22:03:30,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:30,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782119499] [2024-10-31 22:03:30,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:30,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:30,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:30,793 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 22:03:30,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:30,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782119499] [2024-10-31 22:03:30,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782119499] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:30,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:30,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:03:30,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482625518] [2024-10-31 22:03:30,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:30,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:03:30,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:30,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:03:30,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:03:30,796 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-10-31 22:03:30,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 63 transitions, 320 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:30,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:03:30,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-10-31 22:03:30,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:03:32,085 INFO L124 PetriNetUnfolderBase]: 6148/9389 cut-off events. [2024-10-31 22:03:32,086 INFO L125 PetriNetUnfolderBase]: For 5020/5020 co-relation queries the response was YES. [2024-10-31 22:03:32,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26881 conditions, 9389 events. 6148/9389 cut-off events. For 5020/5020 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 61811 event pairs, 4670 based on Foata normal form. 344/7141 useless extension candidates. Maximal degree in co-relation 26865. Up to 9089 conditions per place. [2024-10-31 22:03:32,177 INFO L140 encePairwiseOnDemand]: 49/51 looper letters, 50 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2024-10-31 22:03:32,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 59 transitions, 394 flow [2024-10-31 22:03:32,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:03:32,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:03:32,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2024-10-31 22:03:32,179 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43137254901960786 [2024-10-31 22:03:32,179 INFO L175 Difference]: Start difference. First operand has 55 places, 63 transitions, 320 flow. Second operand 3 states and 66 transitions. [2024-10-31 22:03:32,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 59 transitions, 394 flow [2024-10-31 22:03:32,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 59 transitions, 388 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:03:32,185 INFO L231 Difference]: Finished difference. Result has 54 places, 59 transitions, 288 flow [2024-10-31 22:03:32,186 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=54, PETRI_TRANSITIONS=59} [2024-10-31 22:03:32,186 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2024-10-31 22:03:32,187 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 59 transitions, 288 flow [2024-10-31 22:03:32,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:32,187 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:03:32,187 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:32,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:03:32,188 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-31 22:03:32,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:32,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1967581049, now seen corresponding path program 1 times [2024-10-31 22:03:32,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:32,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759194722] [2024-10-31 22:03:32,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:32,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:32,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:32,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:32,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:32,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759194722] [2024-10-31 22:03:32,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759194722] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:32,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:32,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:03:32,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837851517] [2024-10-31 22:03:32,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:32,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:03:32,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:32,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:03:32,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:03:32,259 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-10-31 22:03:32,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 59 transitions, 288 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 22:03:32,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:03:32,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-10-31 22:03:32,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:03:33,193 INFO L124 PetriNetUnfolderBase]: 5455/8364 cut-off events. [2024-10-31 22:03:33,193 INFO L125 PetriNetUnfolderBase]: For 3732/3732 co-relation queries the response was YES. [2024-10-31 22:03:33,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23119 conditions, 8364 events. 5455/8364 cut-off events. For 3732/3732 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 54802 event pairs, 4211 based on Foata normal form. 162/6270 useless extension candidates. Maximal degree in co-relation 23103. Up to 8082 conditions per place. [2024-10-31 22:03:33,250 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 46 selfloop transitions, 1 changer transitions 0/55 dead transitions. [2024-10-31 22:03:33,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 55 transitions, 350 flow [2024-10-31 22:03:33,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:03:33,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:03:33,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2024-10-31 22:03:33,252 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42483660130718953 [2024-10-31 22:03:33,252 INFO L175 Difference]: Start difference. First operand has 54 places, 59 transitions, 288 flow. Second operand 3 states and 65 transitions. [2024-10-31 22:03:33,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 55 transitions, 350 flow [2024-10-31 22:03:33,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 55 transitions, 349 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:03:33,256 INFO L231 Difference]: Finished difference. Result has 53 places, 55 transitions, 257 flow [2024-10-31 22:03:33,256 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=257, PETRI_PLACES=53, PETRI_TRANSITIONS=55} [2024-10-31 22:03:33,257 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 2 predicate places. [2024-10-31 22:03:33,257 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 55 transitions, 257 flow [2024-10-31 22:03:33,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 22:03:33,257 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:03:33,257 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:33,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:03:33,258 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-31 22:03:33,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:33,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1967581013, now seen corresponding path program 1 times [2024-10-31 22:03:33,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:33,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922820921] [2024-10-31 22:03:33,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:33,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:33,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:33,314 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:33,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:33,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922820921] [2024-10-31 22:03:33,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922820921] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:03:33,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597556868] [2024-10-31 22:03:33,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:33,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:03:33,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0118e2-81c6-4466-8f9c-3082b7a28b70/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:03:33,319 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0118e2-81c6-4466-8f9c-3082b7a28b70/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:03:33,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0118e2-81c6-4466-8f9c-3082b7a28b70/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:03:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:33,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:03:33,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:03:33,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:33,495 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:03:33,536 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:33,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597556868] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:03:33,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:03:33,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-10-31 22:03:33,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766047070] [2024-10-31 22:03:33,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:03:33,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:03:33,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:33,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:03:33,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:03:33,548 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-10-31 22:03:33,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 55 transitions, 257 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 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 22:03:33,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:03:33,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-10-31 22:03:33,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:03:35,706 INFO L124 PetriNetUnfolderBase]: 17703/26404 cut-off events. [2024-10-31 22:03:35,706 INFO L125 PetriNetUnfolderBase]: For 12258/12258 co-relation queries the response was YES. [2024-10-31 22:03:35,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72600 conditions, 26404 events. 17703/26404 cut-off events. For 12258/12258 co-relation queries the response was YES. Maximal size of possible extension queue 1125. Compared 182917 event pairs, 660 based on Foata normal form. 538/20027 useless extension candidates. Maximal degree in co-relation 72583. Up to 6927 conditions per place. [2024-10-31 22:03:35,859 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 124 selfloop transitions, 61 changer transitions 0/193 dead transitions. [2024-10-31 22:03:35,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 193 transitions, 1196 flow [2024-10-31 22:03:35,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:03:35,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:03:35,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 236 transitions. [2024-10-31 22:03:35,861 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6610644257703081 [2024-10-31 22:03:35,861 INFO L175 Difference]: Start difference. First operand has 53 places, 55 transitions, 257 flow. Second operand 7 states and 236 transitions. [2024-10-31 22:03:35,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 193 transitions, 1196 flow [2024-10-31 22:03:35,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 193 transitions, 1195 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:03:35,866 INFO L231 Difference]: Finished difference. Result has 62 places, 109 transitions, 898 flow [2024-10-31 22:03:35,866 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=898, PETRI_PLACES=62, PETRI_TRANSITIONS=109} [2024-10-31 22:03:35,868 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2024-10-31 22:03:35,869 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 109 transitions, 898 flow [2024-10-31 22:03:35,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 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 22:03:35,870 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:03:35,870 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:35,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0118e2-81c6-4466-8f9c-3082b7a28b70/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:03:36,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0118e2-81c6-4466-8f9c-3082b7a28b70/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:03:36,075 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-31 22:03:36,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:36,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1967581015, now seen corresponding path program 1 times [2024-10-31 22:03:36,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:36,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988310077] [2024-10-31 22:03:36,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:36,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:36,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:36,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:36,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:36,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988310077] [2024-10-31 22:03:36,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988310077] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:03:36,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685524471] [2024-10-31 22:03:36,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:36,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:03:36,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0118e2-81c6-4466-8f9c-3082b7a28b70/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:03:36,160 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0118e2-81c6-4466-8f9c-3082b7a28b70/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:03:36,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0118e2-81c6-4466-8f9c-3082b7a28b70/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:03:36,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:36,227 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:03:36,228 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:03:36,331 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:36,332 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:03:36,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:36,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685524471] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:03:36,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:03:36,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2024-10-31 22:03:36,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081735430] [2024-10-31 22:03:36,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:03:36,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 22:03:36,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:36,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:03:36,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:03:36,438 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-10-31 22:03:36,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 109 transitions, 898 flow. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 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 22:03:36,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:03:36,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-10-31 22:03:36,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:03:43,008 INFO L124 PetriNetUnfolderBase]: 40352/60437 cut-off events. [2024-10-31 22:03:43,008 INFO L125 PetriNetUnfolderBase]: For 121372/121372 co-relation queries the response was YES. [2024-10-31 22:03:43,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206191 conditions, 60437 events. 40352/60437 cut-off events. For 121372/121372 co-relation queries the response was YES. Maximal size of possible extension queue 2310. Compared 461260 event pairs, 2578 based on Foata normal form. 550/46982 useless extension candidates. Maximal degree in co-relation 206169. Up to 13948 conditions per place. [2024-10-31 22:03:43,407 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 369 selfloop transitions, 130 changer transitions 0/507 dead transitions. [2024-10-31 22:03:43,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 507 transitions, 4939 flow [2024-10-31 22:03:43,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:03:43,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-31 22:03:43,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 343 transitions. [2024-10-31 22:03:43,409 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6725490196078432 [2024-10-31 22:03:43,409 INFO L175 Difference]: Start difference. First operand has 62 places, 109 transitions, 898 flow. Second operand 10 states and 343 transitions. [2024-10-31 22:03:43,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 507 transitions, 4939 flow [2024-10-31 22:03:45,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 507 transitions, 4781 flow, removed 79 selfloop flow, removed 0 redundant places. [2024-10-31 22:03:45,746 INFO L231 Difference]: Finished difference. Result has 79 places, 224 transitions, 2677 flow [2024-10-31 22:03:45,746 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=862, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2677, PETRI_PLACES=79, PETRI_TRANSITIONS=224} [2024-10-31 22:03:45,747 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 28 predicate places. [2024-10-31 22:03:45,747 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 224 transitions, 2677 flow [2024-10-31 22:03:45,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 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 22:03:45,748 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:03:45,748 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:45,769 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0118e2-81c6-4466-8f9c-3082b7a28b70/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 22:03:45,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0118e2-81c6-4466-8f9c-3082b7a28b70/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-31 22:03:45,953 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-31 22:03:45,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:45,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1071724147, now seen corresponding path program 1 times [2024-10-31 22:03:45,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:45,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773717139] [2024-10-31 22:03:45,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:45,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:45,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:46,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:46,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:46,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773717139] [2024-10-31 22:03:46,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773717139] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:03:46,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654081356] [2024-10-31 22:03:46,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:46,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:03:46,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0118e2-81c6-4466-8f9c-3082b7a28b70/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:03:46,053 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0118e2-81c6-4466-8f9c-3082b7a28b70/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:03:46,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a0118e2-81c6-4466-8f9c-3082b7a28b70/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:03:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:46,126 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:03:46,128 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:03:46,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:46,172 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:03:46,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:46,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654081356] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:03:46,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:03:46,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-10-31 22:03:46,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831134365] [2024-10-31 22:03:46,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:03:46,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:03:46,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:46,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:03:46,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:03:46,216 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-10-31 22:03:46,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 224 transitions, 2677 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:46,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:03:46,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-10-31 22:03:46,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand