./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/test-easy11.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_c6f908f0-512d-413a-be54-020cf3e63909/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f908f0-512d-413a-be54-020cf3e63909/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_c6f908f0-512d-413a-be54-020cf3e63909/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f908f0-512d-413a-be54-020cf3e63909/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-easy11.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f908f0-512d-413a-be54-020cf3e63909/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_c6f908f0-512d-413a-be54-020cf3e63909/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 d4ad0d0809306a534b821bfb65370b6441b48266d0d86b4699760a422c08b963 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:11:15,299 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:11:15,406 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f908f0-512d-413a-be54-020cf3e63909/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-31 22:11:15,417 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:11:15,420 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:11:15,467 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:11:15,468 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:11:15,468 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:11:15,469 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:11:15,471 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:11:15,473 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:11:15,474 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:11:15,474 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:11:15,475 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:11:15,475 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:11:15,476 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:11:15,476 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:11:15,477 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:11:15,477 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:11:15,477 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:11:15,478 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:11:15,482 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:11:15,483 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:11:15,483 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:11:15,483 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:11:15,484 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-31 22:11:15,484 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:11:15,484 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:11:15,484 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:11:15,485 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:11:15,485 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:11:15,485 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:11:15,486 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:11:15,487 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:11:15,489 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:11:15,489 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:11:15,489 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:11:15,489 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:11:15,490 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:11:15,490 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:11:15,490 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:11:15,491 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:11:15,492 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:11:15,492 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:11:15,492 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_c6f908f0-512d-413a-be54-020cf3e63909/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f908f0-512d-413a-be54-020cf3e63909/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4ad0d0809306a534b821bfb65370b6441b48266d0d86b4699760a422c08b963 [2024-10-31 22:11:15,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:11:15,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:11:15,888 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:11:15,890 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:11:15,890 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:11:15,892 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f908f0-512d-413a-be54-020cf3e63909/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/weaver/test-easy11.wvr.c Unable to find full path for "g++" [2024-10-31 22:11:18,069 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:11:18,467 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:11:18,467 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f908f0-512d-413a-be54-020cf3e63909/sv-benchmarks/c/weaver/test-easy11.wvr.c [2024-10-31 22:11:18,479 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f908f0-512d-413a-be54-020cf3e63909/bin/uautomizer-verify-4GaUIPS5ZU/data/ff6bd948b/59dde78aa9d54a1384f7aeca2f39bf49/FLAGa4481a312 [2024-10-31 22:11:18,690 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f908f0-512d-413a-be54-020cf3e63909/bin/uautomizer-verify-4GaUIPS5ZU/data/ff6bd948b/59dde78aa9d54a1384f7aeca2f39bf49 [2024-10-31 22:11:18,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:11:18,700 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:11:18,702 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:11:18,706 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:11:18,719 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:11:18,720 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:11:18" (1/1) ... [2024-10-31 22:11:18,724 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2248d5d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:18, skipping insertion in model container [2024-10-31 22:11:18,724 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:11:18" (1/1) ... [2024-10-31 22:11:18,752 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:11:19,042 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:11:19,055 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:11:19,093 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:11:19,121 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:11:19,127 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:19 WrapperNode [2024-10-31 22:11:19,131 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:11:19,132 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:11:19,133 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:11:19,133 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:11:19,149 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:19" (1/1) ... [2024-10-31 22:11:19,163 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:19" (1/1) ... [2024-10-31 22:11:19,191 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 43 [2024-10-31 22:11:19,195 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:11:19,196 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:11:19,196 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:11:19,197 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:11:19,229 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:19" (1/1) ... [2024-10-31 22:11:19,229 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:19" (1/1) ... [2024-10-31 22:11:19,233 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:19" (1/1) ... [2024-10-31 22:11:19,268 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 22:11:19,268 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:19" (1/1) ... [2024-10-31 22:11:19,268 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:19" (1/1) ... [2024-10-31 22:11:19,281 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:19" (1/1) ... [2024-10-31 22:11:19,287 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:19" (1/1) ... [2024-10-31 22:11:19,289 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:19" (1/1) ... [2024-10-31 22:11:19,295 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:19" (1/1) ... [2024-10-31 22:11:19,297 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:11:19,302 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:11:19,302 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:11:19,302 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:11:19,303 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:19" (1/1) ... [2024-10-31 22:11:19,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:11:19,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f908f0-512d-413a-be54-020cf3e63909/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:19,367 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f908f0-512d-413a-be54-020cf3e63909/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:11:19,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f908f0-512d-413a-be54-020cf3e63909/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:11:19,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:11:19,411 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-31 22:11:19,412 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-31 22:11:19,412 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-31 22:11:19,412 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-31 22:11:19,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:11:19,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:11:19,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:11:19,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:11:19,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:11:19,417 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 22:11:19,538 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:11:19,543 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:11:19,872 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:11:19,872 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:11:20,056 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:11:20,057 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-31 22:11:20,058 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:11:20 BoogieIcfgContainer [2024-10-31 22:11:20,058 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:11:20,063 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:11:20,063 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:11:20,068 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:11:20,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:11:18" (1/3) ... [2024-10-31 22:11:20,069 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38aaa8da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:11:20, skipping insertion in model container [2024-10-31 22:11:20,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:19" (2/3) ... [2024-10-31 22:11:20,071 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38aaa8da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:11:20, skipping insertion in model container [2024-10-31 22:11:20,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:11:20" (3/3) ... [2024-10-31 22:11:20,073 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2024-10-31 22:11:20,093 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:11:20,093 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-31 22:11:20,094 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:11:20,149 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-31 22:11:20,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 32 transitions, 78 flow [2024-10-31 22:11:20,236 INFO L124 PetriNetUnfolderBase]: 2/30 cut-off events. [2024-10-31 22:11:20,238 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:11:20,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 30 events. 2/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 70 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-10-31 22:11:20,244 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 32 transitions, 78 flow [2024-10-31 22:11:20,248 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 28 transitions, 65 flow [2024-10-31 22:11:20,263 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:11:20,271 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;@1dbb181a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:11:20,272 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-10-31 22:11:20,282 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:11:20,284 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-10-31 22:11:20,285 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:11:20,285 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:20,286 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-31 22:11:20,286 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-31 22:11:20,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:20,292 INFO L85 PathProgramCache]: Analyzing trace with hash 237689506, now seen corresponding path program 1 times [2024-10-31 22:11:20,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:20,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504407265] [2024-10-31 22:11:20,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:20,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:20,604 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 22:11:20,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:20,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504407265] [2024-10-31 22:11:20,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504407265] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:20,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:20,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:11:20,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865160641] [2024-10-31 22:11:20,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:20,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:11:20,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:20,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:11:20,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:11:20,670 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-10-31 22:11:20,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 65 flow. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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 22:11:20,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:20,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-10-31 22:11:20,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:21,045 INFO L124 PetriNetUnfolderBase]: 243/438 cut-off events. [2024-10-31 22:11:21,045 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-31 22:11:21,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 884 conditions, 438 events. 243/438 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2038 event pairs, 7 based on Foata normal form. 18/325 useless extension candidates. Maximal degree in co-relation 834. Up to 298 conditions per place. [2024-10-31 22:11:21,053 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 41 selfloop transitions, 4 changer transitions 0/49 dead transitions. [2024-10-31 22:11:21,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 49 transitions, 203 flow [2024-10-31 22:11:21,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:11:21,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:11:21,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2024-10-31 22:11:21,065 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-10-31 22:11:21,066 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 65 flow. Second operand 5 states and 76 transitions. [2024-10-31 22:11:21,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 49 transitions, 203 flow [2024-10-31 22:11:21,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 49 transitions, 196 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:11:21,073 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 66 flow [2024-10-31 22:11:21,075 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=66, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2024-10-31 22:11:21,080 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2024-10-31 22:11:21,081 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 66 flow [2024-10-31 22:11:21,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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 22:11:21,082 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:21,082 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-31 22:11:21,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:11:21,082 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-31 22:11:21,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:21,083 INFO L85 PathProgramCache]: Analyzing trace with hash 237689539, now seen corresponding path program 1 times [2024-10-31 22:11:21,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:21,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534113205] [2024-10-31 22:11:21,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:21,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:21,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:21,173 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 22:11:21,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:21,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534113205] [2024-10-31 22:11:21,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534113205] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:21,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:21,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:11:21,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863321626] [2024-10-31 22:11:21,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:21,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:11:21,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:21,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:11:21,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:11:21,178 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-31 22:11:21,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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 22:11:21,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:21,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-31 22:11:21,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:21,364 INFO L124 PetriNetUnfolderBase]: 195/358 cut-off events. [2024-10-31 22:11:21,364 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2024-10-31 22:11:21,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 765 conditions, 358 events. 195/358 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1498 event pairs, 49 based on Foata normal form. 0/283 useless extension candidates. Maximal degree in co-relation 574. Up to 163 conditions per place. [2024-10-31 22:11:21,368 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 41 selfloop transitions, 5 changer transitions 2/53 dead transitions. [2024-10-31 22:11:21,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 53 transitions, 224 flow [2024-10-31 22:11:21,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:11:21,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:11:21,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 81 transitions. [2024-10-31 22:11:21,370 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6328125 [2024-10-31 22:11:21,370 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 66 flow. Second operand 4 states and 81 transitions. [2024-10-31 22:11:21,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 53 transitions, 224 flow [2024-10-31 22:11:21,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 53 transitions, 210 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-31 22:11:21,373 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 82 flow [2024-10-31 22:11:21,373 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2024-10-31 22:11:21,374 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2024-10-31 22:11:21,374 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 82 flow [2024-10-31 22:11:21,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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 22:11:21,375 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:21,375 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-31 22:11:21,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:11:21,375 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-31 22:11:21,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:21,376 INFO L85 PathProgramCache]: Analyzing trace with hash 237689540, now seen corresponding path program 1 times [2024-10-31 22:11:21,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:21,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995390415] [2024-10-31 22:11:21,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:21,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:21,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:21,527 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 22:11:21,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:21,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995390415] [2024-10-31 22:11:21,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995390415] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:21,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:21,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:11:21,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920728263] [2024-10-31 22:11:21,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:21,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:11:21,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:21,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:11:21,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:11:21,532 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-31 22:11:21,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 82 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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 22:11:21,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:21,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-31 22:11:21,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:21,775 INFO L124 PetriNetUnfolderBase]: 239/436 cut-off events. [2024-10-31 22:11:21,776 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2024-10-31 22:11:21,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1005 conditions, 436 events. 239/436 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1910 event pairs, 63 based on Foata normal form. 14/408 useless extension candidates. Maximal degree in co-relation 598. Up to 157 conditions per place. [2024-10-31 22:11:21,784 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 41 selfloop transitions, 10 changer transitions 0/56 dead transitions. [2024-10-31 22:11:21,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 56 transitions, 255 flow [2024-10-31 22:11:21,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:11:21,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:11:21,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2024-10-31 22:11:21,787 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.640625 [2024-10-31 22:11:21,787 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 82 flow. Second operand 4 states and 82 transitions. [2024-10-31 22:11:21,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 56 transitions, 255 flow [2024-10-31 22:11:21,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 56 transitions, 248 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:11:21,791 INFO L231 Difference]: Finished difference. Result has 38 places, 35 transitions, 137 flow [2024-10-31 22:11:21,792 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=137, PETRI_PLACES=38, PETRI_TRANSITIONS=35} [2024-10-31 22:11:21,792 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2024-10-31 22:11:21,793 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 35 transitions, 137 flow [2024-10-31 22:11:21,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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 22:11:21,793 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:21,793 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-31 22:11:21,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:11:21,797 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-31 22:11:21,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:21,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1221559640, now seen corresponding path program 1 times [2024-10-31 22:11:21,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:21,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220517646] [2024-10-31 22:11:21,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:21,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:21,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:21,845 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 22:11:21,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:21,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220517646] [2024-10-31 22:11:21,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220517646] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:21,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:21,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:11:21,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010165801] [2024-10-31 22:11:21,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:21,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:11:21,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:21,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:11:21,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:11:21,862 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-10-31 22:11:21,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 35 transitions, 137 flow. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 22:11:21,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:21,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-10-31 22:11:21,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:22,036 INFO L124 PetriNetUnfolderBase]: 239/450 cut-off events. [2024-10-31 22:11:22,037 INFO L125 PetriNetUnfolderBase]: For 318/318 co-relation queries the response was YES. [2024-10-31 22:11:22,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1192 conditions, 450 events. 239/450 cut-off events. For 318/318 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2028 event pairs, 150 based on Foata normal form. 18/416 useless extension candidates. Maximal degree in co-relation 926. Up to 339 conditions per place. [2024-10-31 22:11:22,046 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 37 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-10-31 22:11:22,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 45 transitions, 246 flow [2024-10-31 22:11:22,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:11:22,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:11:22,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-10-31 22:11:22,050 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-10-31 22:11:22,051 INFO L175 Difference]: Start difference. First operand has 38 places, 35 transitions, 137 flow. Second operand 3 states and 52 transitions. [2024-10-31 22:11:22,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 45 transitions, 246 flow [2024-10-31 22:11:22,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 45 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:11:22,058 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 136 flow [2024-10-31 22:11:22,058 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2024-10-31 22:11:22,059 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2024-10-31 22:11:22,059 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 136 flow [2024-10-31 22:11:22,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 22:11:22,060 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:22,060 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:22,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:11:22,061 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-31 22:11:22,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:22,063 INFO L85 PathProgramCache]: Analyzing trace with hash 784248755, now seen corresponding path program 1 times [2024-10-31 22:11:22,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:22,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200952798] [2024-10-31 22:11:22,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:22,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:22,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:22,166 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 22:11:22,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:22,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200952798] [2024-10-31 22:11:22,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200952798] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:22,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:22,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:11:22,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778400609] [2024-10-31 22:11:22,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:22,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:11:22,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:22,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:11:22,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:11:22,180 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-10-31 22:11:22,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 22:11:22,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:22,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-10-31 22:11:22,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:22,395 INFO L124 PetriNetUnfolderBase]: 269/467 cut-off events. [2024-10-31 22:11:22,396 INFO L125 PetriNetUnfolderBase]: For 487/487 co-relation queries the response was YES. [2024-10-31 22:11:22,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1304 conditions, 467 events. 269/467 cut-off events. For 487/487 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1947 event pairs, 28 based on Foata normal form. 19/428 useless extension candidates. Maximal degree in co-relation 1028. Up to 277 conditions per place. [2024-10-31 22:11:22,401 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 49 selfloop transitions, 4 changer transitions 0/55 dead transitions. [2024-10-31 22:11:22,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 55 transitions, 354 flow [2024-10-31 22:11:22,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:11:22,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:11:22,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2024-10-31 22:11:22,403 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-10-31 22:11:22,403 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 136 flow. Second operand 5 states and 72 transitions. [2024-10-31 22:11:22,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 55 transitions, 354 flow [2024-10-31 22:11:22,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 55 transitions, 334 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:11:22,406 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 134 flow [2024-10-31 22:11:22,407 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=134, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2024-10-31 22:11:22,411 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2024-10-31 22:11:22,411 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 134 flow [2024-10-31 22:11:22,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 22:11:22,411 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:22,412 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:22,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:11:22,412 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-31 22:11:22,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:22,413 INFO L85 PathProgramCache]: Analyzing trace with hash 784248788, now seen corresponding path program 1 times [2024-10-31 22:11:22,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:22,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113536847] [2024-10-31 22:11:22,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:22,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:22,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:22,520 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 22:11:22,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:22,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113536847] [2024-10-31 22:11:22,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113536847] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:22,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:22,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:11:22,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032007544] [2024-10-31 22:11:22,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:22,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:11:22,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:22,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:11:22,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:11:22,525 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-31 22:11:22,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 22:11:22,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:22,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-31 22:11:22,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:22,668 INFO L124 PetriNetUnfolderBase]: 214/384 cut-off events. [2024-10-31 22:11:22,668 INFO L125 PetriNetUnfolderBase]: For 306/306 co-relation queries the response was YES. [2024-10-31 22:11:22,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1071 conditions, 384 events. 214/384 cut-off events. For 306/306 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1551 event pairs, 69 based on Foata normal form. 0/377 useless extension candidates. Maximal degree in co-relation 820. Up to 153 conditions per place. [2024-10-31 22:11:22,672 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 39 selfloop transitions, 10 changer transitions 0/52 dead transitions. [2024-10-31 22:11:22,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 52 transitions, 310 flow [2024-10-31 22:11:22,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:11:22,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:11:22,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 75 transitions. [2024-10-31 22:11:22,676 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5859375 [2024-10-31 22:11:22,676 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 134 flow. Second operand 4 states and 75 transitions. [2024-10-31 22:11:22,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 52 transitions, 310 flow [2024-10-31 22:11:22,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 52 transitions, 296 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-31 22:11:22,679 INFO L231 Difference]: Finished difference. Result has 40 places, 36 transitions, 175 flow [2024-10-31 22:11:22,680 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=175, PETRI_PLACES=40, PETRI_TRANSITIONS=36} [2024-10-31 22:11:22,680 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2024-10-31 22:11:22,680 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 36 transitions, 175 flow [2024-10-31 22:11:22,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 22:11:22,681 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:22,681 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:22,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:11:22,681 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-31 22:11:22,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:22,682 INFO L85 PathProgramCache]: Analyzing trace with hash 784248789, now seen corresponding path program 1 times [2024-10-31 22:11:22,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:22,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267080094] [2024-10-31 22:11:22,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:22,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:22,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:22,751 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 22:11:22,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:22,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267080094] [2024-10-31 22:11:22,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267080094] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:22,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:22,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:11:22,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323939665] [2024-10-31 22:11:22,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:22,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:11:22,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:22,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:11:22,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:11:22,753 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-31 22:11:22,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 175 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 22:11:22,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:22,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-31 22:11:22,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:22,929 INFO L124 PetriNetUnfolderBase]: 278/480 cut-off events. [2024-10-31 22:11:22,930 INFO L125 PetriNetUnfolderBase]: For 466/466 co-relation queries the response was YES. [2024-10-31 22:11:22,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1482 conditions, 480 events. 278/480 cut-off events. For 466/466 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1876 event pairs, 85 based on Foata normal form. 14/493 useless extension candidates. Maximal degree in co-relation 1175. Up to 175 conditions per place. [2024-10-31 22:11:22,933 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 39 selfloop transitions, 20 changer transitions 0/62 dead transitions. [2024-10-31 22:11:22,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 62 transitions, 431 flow [2024-10-31 22:11:22,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:11:22,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:11:22,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2024-10-31 22:11:22,936 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-10-31 22:11:22,936 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 175 flow. Second operand 4 states and 78 transitions. [2024-10-31 22:11:22,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 62 transitions, 431 flow [2024-10-31 22:11:22,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 62 transitions, 414 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:11:22,941 INFO L231 Difference]: Finished difference. Result has 44 places, 47 transitions, 307 flow [2024-10-31 22:11:22,942 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=307, PETRI_PLACES=44, PETRI_TRANSITIONS=47} [2024-10-31 22:11:22,942 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2024-10-31 22:11:22,943 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 47 transitions, 307 flow [2024-10-31 22:11:22,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 22:11:22,943 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:22,943 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:22,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:11:22,943 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-31 22:11:22,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:22,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1458092094, now seen corresponding path program 1 times [2024-10-31 22:11:22,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:22,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451977216] [2024-10-31 22:11:22,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:22,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:22,996 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 22:11:22,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:22,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451977216] [2024-10-31 22:11:22,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451977216] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:22,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:22,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:11:22,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414357736] [2024-10-31 22:11:22,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:22,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:11:22,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:22,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:11:22,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:11:23,005 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-10-31 22:11:23,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 47 transitions, 307 flow. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 22:11:23,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:23,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-10-31 22:11:23,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:23,126 INFO L124 PetriNetUnfolderBase]: 278/471 cut-off events. [2024-10-31 22:11:23,126 INFO L125 PetriNetUnfolderBase]: For 737/737 co-relation queries the response was YES. [2024-10-31 22:11:23,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1668 conditions, 471 events. 278/471 cut-off events. For 737/737 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1784 event pairs, 153 based on Foata normal form. 19/488 useless extension candidates. Maximal degree in co-relation 1336. Up to 387 conditions per place. [2024-10-31 22:11:23,130 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 51 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2024-10-31 22:11:23,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 57 transitions, 476 flow [2024-10-31 22:11:23,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:11:23,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:11:23,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2024-10-31 22:11:23,132 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-10-31 22:11:23,132 INFO L175 Difference]: Start difference. First operand has 44 places, 47 transitions, 307 flow. Second operand 3 states and 50 transitions. [2024-10-31 22:11:23,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 57 transitions, 476 flow [2024-10-31 22:11:23,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 57 transitions, 457 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:11:23,135 INFO L231 Difference]: Finished difference. Result has 44 places, 46 transitions, 296 flow [2024-10-31 22:11:23,136 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=296, PETRI_PLACES=44, PETRI_TRANSITIONS=46} [2024-10-31 22:11:23,139 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2024-10-31 22:11:23,139 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 46 transitions, 296 flow [2024-10-31 22:11:23,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 22:11:23,141 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:23,141 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:23,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:11:23,142 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-31 22:11:23,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:23,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1392733939, now seen corresponding path program 1 times [2024-10-31 22:11:23,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:23,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294447090] [2024-10-31 22:11:23,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:23,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:23,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:23,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:23,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:23,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294447090] [2024-10-31 22:11:23,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294447090] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:23,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:23,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:11:23,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170224448] [2024-10-31 22:11:23,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:23,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:11:23,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:23,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:11:23,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:11:23,248 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-10-31 22:11:23,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 46 transitions, 296 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 22:11:23,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:23,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-10-31 22:11:23,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:23,446 INFO L124 PetriNetUnfolderBase]: 251/428 cut-off events. [2024-10-31 22:11:23,446 INFO L125 PetriNetUnfolderBase]: For 713/713 co-relation queries the response was YES. [2024-10-31 22:11:23,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1510 conditions, 428 events. 251/428 cut-off events. For 713/713 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1593 event pairs, 58 based on Foata normal form. 16/444 useless extension candidates. Maximal degree in co-relation 1192. Up to 171 conditions per place. [2024-10-31 22:11:23,451 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 49 selfloop transitions, 24 changer transitions 0/75 dead transitions. [2024-10-31 22:11:23,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 75 transitions, 602 flow [2024-10-31 22:11:23,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:11:23,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:11:23,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 86 transitions. [2024-10-31 22:11:23,452 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-10-31 22:11:23,452 INFO L175 Difference]: Start difference. First operand has 44 places, 46 transitions, 296 flow. Second operand 5 states and 86 transitions. [2024-10-31 22:11:23,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 75 transitions, 602 flow [2024-10-31 22:11:23,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 75 transitions, 580 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:11:23,457 INFO L231 Difference]: Finished difference. Result has 48 places, 51 transitions, 406 flow [2024-10-31 22:11:23,457 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=406, PETRI_PLACES=48, PETRI_TRANSITIONS=51} [2024-10-31 22:11:23,459 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 15 predicate places. [2024-10-31 22:11:23,459 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 51 transitions, 406 flow [2024-10-31 22:11:23,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 22:11:23,459 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:23,459 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:23,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:11:23,460 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-31 22:11:23,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:23,460 INFO L85 PathProgramCache]: Analyzing trace with hash 329285479, now seen corresponding path program 1 times [2024-10-31 22:11:23,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:23,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424576010] [2024-10-31 22:11:23,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:23,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:23,608 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 22:11:23,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:23,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424576010] [2024-10-31 22:11:23,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424576010] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:23,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:23,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:11:23,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69290876] [2024-10-31 22:11:23,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:23,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:11:23,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:23,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:11:23,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:11:23,611 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-31 22:11:23,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 51 transitions, 406 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 22:11:23,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:23,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-31 22:11:23,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:23,882 INFO L124 PetriNetUnfolderBase]: 306/517 cut-off events. [2024-10-31 22:11:23,882 INFO L125 PetriNetUnfolderBase]: For 1226/1226 co-relation queries the response was YES. [2024-10-31 22:11:23,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2005 conditions, 517 events. 306/517 cut-off events. For 1226/1226 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2151 event pairs, 56 based on Foata normal form. 4/521 useless extension candidates. Maximal degree in co-relation 1390. Up to 173 conditions per place. [2024-10-31 22:11:23,887 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 48 selfloop transitions, 34 changer transitions 0/84 dead transitions. [2024-10-31 22:11:23,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 84 transitions, 758 flow [2024-10-31 22:11:23,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:11:23,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:11:23,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2024-10-31 22:11:23,888 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5729166666666666 [2024-10-31 22:11:23,889 INFO L175 Difference]: Start difference. First operand has 48 places, 51 transitions, 406 flow. Second operand 6 states and 110 transitions. [2024-10-31 22:11:23,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 84 transitions, 758 flow [2024-10-31 22:11:23,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 84 transitions, 732 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:11:23,895 INFO L231 Difference]: Finished difference. Result has 56 places, 61 transitions, 604 flow [2024-10-31 22:11:23,895 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=604, PETRI_PLACES=56, PETRI_TRANSITIONS=61} [2024-10-31 22:11:23,895 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 23 predicate places. [2024-10-31 22:11:23,896 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 61 transitions, 604 flow [2024-10-31 22:11:23,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 22:11:23,896 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:23,896 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:23,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 22:11:23,896 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-31 22:11:23,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:23,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1391436812, now seen corresponding path program 1 times [2024-10-31 22:11:23,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:23,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922834139] [2024-10-31 22:11:23,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:23,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:24,000 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 22:11:24,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:24,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922834139] [2024-10-31 22:11:24,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922834139] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:24,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:24,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:11:24,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188712498] [2024-10-31 22:11:24,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:24,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:11:24,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:24,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:11:24,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:11:24,003 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-31 22:11:24,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 61 transitions, 604 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 22:11:24,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:24,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-31 22:11:24,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:24,205 INFO L124 PetriNetUnfolderBase]: 331/555 cut-off events. [2024-10-31 22:11:24,205 INFO L125 PetriNetUnfolderBase]: For 2807/2807 co-relation queries the response was YES. [2024-10-31 22:11:24,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2455 conditions, 555 events. 331/555 cut-off events. For 2807/2807 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2302 event pairs, 85 based on Foata normal form. 8/562 useless extension candidates. Maximal degree in co-relation 2181. Up to 188 conditions per place. [2024-10-31 22:11:24,212 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 50 selfloop transitions, 39 changer transitions 1/92 dead transitions. [2024-10-31 22:11:24,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 92 transitions, 1038 flow [2024-10-31 22:11:24,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:11:24,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:11:24,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-10-31 22:11:24,214 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.515625 [2024-10-31 22:11:24,214 INFO L175 Difference]: Start difference. First operand has 56 places, 61 transitions, 604 flow. Second operand 6 states and 99 transitions. [2024-10-31 22:11:24,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 92 transitions, 1038 flow [2024-10-31 22:11:24,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 92 transitions, 990 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-31 22:11:24,225 INFO L231 Difference]: Finished difference. Result has 62 places, 73 transitions, 858 flow [2024-10-31 22:11:24,226 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=858, PETRI_PLACES=62, PETRI_TRANSITIONS=73} [2024-10-31 22:11:24,226 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 29 predicate places. [2024-10-31 22:11:24,227 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 73 transitions, 858 flow [2024-10-31 22:11:24,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 22:11:24,227 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:24,227 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:24,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-31 22:11:24,228 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-31 22:11:24,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:24,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1078631311, now seen corresponding path program 2 times [2024-10-31 22:11:24,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:24,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494488919] [2024-10-31 22:11:24,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:24,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:24,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:24,314 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 22:11:24,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:24,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494488919] [2024-10-31 22:11:24,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494488919] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:24,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:24,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:11:24,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894568516] [2024-10-31 22:11:24,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:24,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:11:24,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:24,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:11:24,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:11:24,316 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-31 22:11:24,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 73 transitions, 858 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 22:11:24,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:24,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-31 22:11:24,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:24,629 INFO L124 PetriNetUnfolderBase]: 364/639 cut-off events. [2024-10-31 22:11:24,629 INFO L125 PetriNetUnfolderBase]: For 3428/3428 co-relation queries the response was YES. [2024-10-31 22:11:24,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2909 conditions, 639 events. 364/639 cut-off events. For 3428/3428 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2893 event pairs, 48 based on Foata normal form. 8/647 useless extension candidates. Maximal degree in co-relation 2602. Up to 229 conditions per place. [2024-10-31 22:11:24,636 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 59 selfloop transitions, 55 changer transitions 1/117 dead transitions. [2024-10-31 22:11:24,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 117 transitions, 1382 flow [2024-10-31 22:11:24,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:11:24,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:11:24,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-10-31 22:11:24,638 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5546875 [2024-10-31 22:11:24,638 INFO L175 Difference]: Start difference. First operand has 62 places, 73 transitions, 858 flow. Second operand 8 states and 142 transitions. [2024-10-31 22:11:24,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 117 transitions, 1382 flow [2024-10-31 22:11:24,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 117 transitions, 1329 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-31 22:11:24,653 INFO L231 Difference]: Finished difference. Result has 69 places, 83 transitions, 1065 flow [2024-10-31 22:11:24,653 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=815, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1065, PETRI_PLACES=69, PETRI_TRANSITIONS=83} [2024-10-31 22:11:24,654 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 36 predicate places. [2024-10-31 22:11:24,654 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 83 transitions, 1065 flow [2024-10-31 22:11:24,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 22:11:24,654 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:24,655 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:24,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-31 22:11:24,655 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-31 22:11:24,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:24,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1066695692, now seen corresponding path program 2 times [2024-10-31 22:11:24,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:24,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143858579] [2024-10-31 22:11:24,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:24,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:24,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:24,719 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 22:11:24,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:24,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143858579] [2024-10-31 22:11:24,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143858579] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:24,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:24,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:11:24,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33202682] [2024-10-31 22:11:24,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:24,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:11:24,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:24,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:11:24,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:11:24,722 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-31 22:11:24,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 83 transitions, 1065 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 22:11:24,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:24,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-31 22:11:24,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:24,974 INFO L124 PetriNetUnfolderBase]: 368/646 cut-off events. [2024-10-31 22:11:24,975 INFO L125 PetriNetUnfolderBase]: For 4829/4833 co-relation queries the response was YES. [2024-10-31 22:11:24,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3161 conditions, 646 events. 368/646 cut-off events. For 4829/4833 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2911 event pairs, 96 based on Foata normal form. 12/657 useless extension candidates. Maximal degree in co-relation 2806. Up to 253 conditions per place. [2024-10-31 22:11:24,982 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 60 selfloop transitions, 41 changer transitions 2/105 dead transitions. [2024-10-31 22:11:24,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 105 transitions, 1452 flow [2024-10-31 22:11:24,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:11:24,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:11:24,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-10-31 22:11:24,983 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-31 22:11:24,983 INFO L175 Difference]: Start difference. First operand has 69 places, 83 transitions, 1065 flow. Second operand 6 states and 96 transitions. [2024-10-31 22:11:24,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 105 transitions, 1452 flow [2024-10-31 22:11:24,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 105 transitions, 1292 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-10-31 22:11:24,999 INFO L231 Difference]: Finished difference. Result has 72 places, 85 transitions, 1095 flow [2024-10-31 22:11:24,999 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=927, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1095, PETRI_PLACES=72, PETRI_TRANSITIONS=85} [2024-10-31 22:11:25,000 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 39 predicate places. [2024-10-31 22:11:25,000 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 85 transitions, 1095 flow [2024-10-31 22:11:25,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 22:11:25,001 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:25,001 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:25,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-31 22:11:25,001 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-31 22:11:25,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:25,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1078299302, now seen corresponding path program 3 times [2024-10-31 22:11:25,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:25,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15077701] [2024-10-31 22:11:25,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:25,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:25,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:25,062 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 22:11:25,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:25,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15077701] [2024-10-31 22:11:25,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15077701] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:25,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:25,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:11:25,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109623883] [2024-10-31 22:11:25,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:25,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:11:25,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:25,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:11:25,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:11:25,064 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-31 22:11:25,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 85 transitions, 1095 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 22:11:25,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:25,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-31 22:11:25,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:25,276 INFO L124 PetriNetUnfolderBase]: 352/618 cut-off events. [2024-10-31 22:11:25,277 INFO L125 PetriNetUnfolderBase]: For 4486/4490 co-relation queries the response was YES. [2024-10-31 22:11:25,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3014 conditions, 618 events. 352/618 cut-off events. For 4486/4490 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2751 event pairs, 88 based on Foata normal form. 12/629 useless extension candidates. Maximal degree in co-relation 2814. Up to 196 conditions per place. [2024-10-31 22:11:25,284 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 57 selfloop transitions, 41 changer transitions 0/100 dead transitions. [2024-10-31 22:11:25,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 100 transitions, 1365 flow [2024-10-31 22:11:25,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:11:25,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:11:25,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 92 transitions. [2024-10-31 22:11:25,285 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-10-31 22:11:25,286 INFO L175 Difference]: Start difference. First operand has 72 places, 85 transitions, 1095 flow. Second operand 6 states and 92 transitions. [2024-10-31 22:11:25,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 100 transitions, 1365 flow [2024-10-31 22:11:25,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 100 transitions, 1124 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-10-31 22:11:25,306 INFO L231 Difference]: Finished difference. Result has 67 places, 82 transitions, 908 flow [2024-10-31 22:11:25,306 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=826, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=908, PETRI_PLACES=67, PETRI_TRANSITIONS=82} [2024-10-31 22:11:25,306 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 34 predicate places. [2024-10-31 22:11:25,307 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 82 transitions, 908 flow [2024-10-31 22:11:25,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 22:11:25,307 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:25,307 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:25,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-31 22:11:25,307 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-31 22:11:25,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:25,308 INFO L85 PathProgramCache]: Analyzing trace with hash 329164248, now seen corresponding path program 1 times [2024-10-31 22:11:25,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:25,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648961464] [2024-10-31 22:11:25,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:25,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:25,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:25,369 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 22:11:25,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:25,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648961464] [2024-10-31 22:11:25,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648961464] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:25,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:25,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:11:25,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649181398] [2024-10-31 22:11:25,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:25,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:11:25,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:25,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:11:25,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:11:25,371 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-31 22:11:25,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 82 transitions, 908 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 22:11:25,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:25,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-31 22:11:25,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:25,625 INFO L124 PetriNetUnfolderBase]: 357/626 cut-off events. [2024-10-31 22:11:25,625 INFO L125 PetriNetUnfolderBase]: For 2485/2489 co-relation queries the response was YES. [2024-10-31 22:11:25,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2896 conditions, 626 events. 357/626 cut-off events. For 2485/2489 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2832 event pairs, 86 based on Foata normal form. 5/630 useless extension candidates. Maximal degree in co-relation 2700. Up to 188 conditions per place. [2024-10-31 22:11:25,631 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 66 selfloop transitions, 48 changer transitions 0/116 dead transitions. [2024-10-31 22:11:25,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 116 transitions, 1352 flow [2024-10-31 22:11:25,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:11:25,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:11:25,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 119 transitions. [2024-10-31 22:11:25,633 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46484375 [2024-10-31 22:11:25,633 INFO L175 Difference]: Start difference. First operand has 67 places, 82 transitions, 908 flow. Second operand 8 states and 119 transitions. [2024-10-31 22:11:25,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 116 transitions, 1352 flow [2024-10-31 22:11:25,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 116 transitions, 1268 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-31 22:11:25,644 INFO L231 Difference]: Finished difference. Result has 71 places, 90 transitions, 1023 flow [2024-10-31 22:11:25,644 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1023, PETRI_PLACES=71, PETRI_TRANSITIONS=90} [2024-10-31 22:11:25,644 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 38 predicate places. [2024-10-31 22:11:25,645 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 90 transitions, 1023 flow [2024-10-31 22:11:25,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 22:11:25,645 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:25,645 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:25,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-31 22:11:25,645 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-31 22:11:25,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:25,645 INFO L85 PathProgramCache]: Analyzing trace with hash 337328719, now seen corresponding path program 1 times [2024-10-31 22:11:25,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:25,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944955783] [2024-10-31 22:11:25,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:25,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:25,757 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 22:11:25,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:25,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944955783] [2024-10-31 22:11:25,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944955783] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:25,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:25,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:11:25,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097621381] [2024-10-31 22:11:25,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:25,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:11:25,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:25,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:11:25,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:11:25,760 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-31 22:11:25,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 90 transitions, 1023 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 22:11:25,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:25,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-31 22:11:25,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:26,114 INFO L124 PetriNetUnfolderBase]: 377/677 cut-off events. [2024-10-31 22:11:26,114 INFO L125 PetriNetUnfolderBase]: For 2727/2731 co-relation queries the response was YES. [2024-10-31 22:11:26,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3021 conditions, 677 events. 377/677 cut-off events. For 2727/2731 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3186 event pairs, 56 based on Foata normal form. 14/691 useless extension candidates. Maximal degree in co-relation 2829. Up to 260 conditions per place. [2024-10-31 22:11:26,122 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 70 selfloop transitions, 58 changer transitions 1/131 dead transitions. [2024-10-31 22:11:26,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 131 transitions, 1544 flow [2024-10-31 22:11:26,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:11:26,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:11:26,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-10-31 22:11:26,124 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5546875 [2024-10-31 22:11:26,124 INFO L175 Difference]: Start difference. First operand has 71 places, 90 transitions, 1023 flow. Second operand 8 states and 142 transitions. [2024-10-31 22:11:26,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 131 transitions, 1544 flow [2024-10-31 22:11:26,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 131 transitions, 1475 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-10-31 22:11:26,137 INFO L231 Difference]: Finished difference. Result has 77 places, 92 transitions, 1151 flow [2024-10-31 22:11:26,137 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=973, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1151, PETRI_PLACES=77, PETRI_TRANSITIONS=92} [2024-10-31 22:11:26,137 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 44 predicate places. [2024-10-31 22:11:26,137 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 92 transitions, 1151 flow [2024-10-31 22:11:26,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 22:11:26,138 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:26,138 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:26,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-31 22:11:26,138 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-31 22:11:26,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:26,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1066696022, now seen corresponding path program 2 times [2024-10-31 22:11:26,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:26,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31420908] [2024-10-31 22:11:26,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:26,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:26,207 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 22:11:26,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:26,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31420908] [2024-10-31 22:11:26,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31420908] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:26,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:26,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:11:26,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014801268] [2024-10-31 22:11:26,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:26,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:11:26,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:26,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:11:26,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:11:26,210 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-31 22:11:26,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 92 transitions, 1151 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 22:11:26,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:26,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-31 22:11:26,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:26,513 INFO L124 PetriNetUnfolderBase]: 382/688 cut-off events. [2024-10-31 22:11:26,513 INFO L125 PetriNetUnfolderBase]: For 3961/3965 co-relation queries the response was YES. [2024-10-31 22:11:26,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3191 conditions, 688 events. 382/688 cut-off events. For 3961/3965 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3263 event pairs, 96 based on Foata normal form. 10/697 useless extension candidates. Maximal degree in co-relation 2999. Up to 196 conditions per place. [2024-10-31 22:11:26,522 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 66 selfloop transitions, 48 changer transitions 1/117 dead transitions. [2024-10-31 22:11:26,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 117 transitions, 1547 flow [2024-10-31 22:11:26,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:11:26,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:11:26,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 120 transitions. [2024-10-31 22:11:26,524 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-10-31 22:11:26,524 INFO L175 Difference]: Start difference. First operand has 77 places, 92 transitions, 1151 flow. Second operand 8 states and 120 transitions. [2024-10-31 22:11:26,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 117 transitions, 1547 flow [2024-10-31 22:11:26,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 117 transitions, 1420 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-31 22:11:26,544 INFO L231 Difference]: Finished difference. Result has 80 places, 92 transitions, 1188 flow [2024-10-31 22:11:26,544 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1053, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1188, PETRI_PLACES=80, PETRI_TRANSITIONS=92} [2024-10-31 22:11:26,544 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 47 predicate places. [2024-10-31 22:11:26,545 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 92 transitions, 1188 flow [2024-10-31 22:11:26,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 22:11:26,545 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:26,545 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:26,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-31 22:11:26,545 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-31 22:11:26,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:26,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1078631642, now seen corresponding path program 3 times [2024-10-31 22:11:26,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:26,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282725713] [2024-10-31 22:11:26,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:26,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:26,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:26,642 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 22:11:26,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:26,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282725713] [2024-10-31 22:11:26,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282725713] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:26,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:26,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:11:26,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699931015] [2024-10-31 22:11:26,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:26,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:11:26,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:26,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:11:26,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:11:26,644 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-31 22:11:26,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 92 transitions, 1188 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 22:11:26,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:26,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-31 22:11:26,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:26,944 INFO L124 PetriNetUnfolderBase]: 370/662 cut-off events. [2024-10-31 22:11:26,944 INFO L125 PetriNetUnfolderBase]: For 3521/3525 co-relation queries the response was YES. [2024-10-31 22:11:26,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3106 conditions, 662 events. 370/662 cut-off events. For 3521/3525 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3096 event pairs, 89 based on Foata normal form. 10/671 useless extension candidates. Maximal degree in co-relation 2909. Up to 254 conditions per place. [2024-10-31 22:11:26,952 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 66 selfloop transitions, 47 changer transitions 1/116 dead transitions. [2024-10-31 22:11:26,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 116 transitions, 1515 flow [2024-10-31 22:11:26,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:11:26,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:11:26,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2024-10-31 22:11:26,954 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47265625 [2024-10-31 22:11:26,954 INFO L175 Difference]: Start difference. First operand has 80 places, 92 transitions, 1188 flow. Second operand 8 states and 121 transitions. [2024-10-31 22:11:26,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 116 transitions, 1515 flow [2024-10-31 22:11:26,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 116 transitions, 1316 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-10-31 22:11:26,974 INFO L231 Difference]: Finished difference. Result has 78 places, 89 transitions, 1043 flow [2024-10-31 22:11:26,975 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=969, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1043, PETRI_PLACES=78, PETRI_TRANSITIONS=89} [2024-10-31 22:11:26,975 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 45 predicate places. [2024-10-31 22:11:26,975 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 89 transitions, 1043 flow [2024-10-31 22:11:26,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 22:11:26,976 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:26,976 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:26,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-31 22:11:26,976 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-31 22:11:26,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:26,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1078631641, now seen corresponding path program 2 times [2024-10-31 22:11:26,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:26,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145759813] [2024-10-31 22:11:26,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:26,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:26,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:27,102 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 22:11:27,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:27,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145759813] [2024-10-31 22:11:27,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145759813] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:27,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:27,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:11:27,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277369320] [2024-10-31 22:11:27,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:27,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:11:27,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:27,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:11:27,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:11:27,104 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-31 22:11:27,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 89 transitions, 1043 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 22:11:27,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:27,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-31 22:11:27,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:27,372 INFO L124 PetriNetUnfolderBase]: 383/703 cut-off events. [2024-10-31 22:11:27,372 INFO L125 PetriNetUnfolderBase]: For 2756/2760 co-relation queries the response was YES. [2024-10-31 22:11:27,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3126 conditions, 703 events. 383/703 cut-off events. For 2756/2760 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3395 event pairs, 89 based on Foata normal form. 19/721 useless extension candidates. Maximal degree in co-relation 2936. Up to 301 conditions per place. [2024-10-31 22:11:27,379 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 58 selfloop transitions, 47 changer transitions 5/112 dead transitions. [2024-10-31 22:11:27,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 112 transitions, 1394 flow [2024-10-31 22:11:27,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:11:27,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:11:27,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-10-31 22:11:27,381 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-10-31 22:11:27,381 INFO L175 Difference]: Start difference. First operand has 78 places, 89 transitions, 1043 flow. Second operand 6 states and 105 transitions. [2024-10-31 22:11:27,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 112 transitions, 1394 flow [2024-10-31 22:11:27,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 112 transitions, 1336 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-31 22:11:27,396 INFO L231 Difference]: Finished difference. Result has 80 places, 88 transitions, 1066 flow [2024-10-31 22:11:27,397 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=993, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1066, PETRI_PLACES=80, PETRI_TRANSITIONS=88} [2024-10-31 22:11:27,397 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 47 predicate places. [2024-10-31 22:11:27,397 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 88 transitions, 1066 flow [2024-10-31 22:11:27,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 22:11:27,398 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:27,398 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:27,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-31 22:11:27,398 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-31 22:11:27,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:27,398 INFO L85 PathProgramCache]: Analyzing trace with hash 329164249, now seen corresponding path program 3 times [2024-10-31 22:11:27,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:27,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100786892] [2024-10-31 22:11:27,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:27,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:27,498 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 22:11:27,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:27,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100786892] [2024-10-31 22:11:27,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100786892] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:27,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:27,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:11:27,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36572229] [2024-10-31 22:11:27,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:27,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:11:27,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:27,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:11:27,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:11:27,501 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-31 22:11:27,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 88 transitions, 1066 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 22:11:27,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:27,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-31 22:11:27,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:27,799 INFO L124 PetriNetUnfolderBase]: 431/810 cut-off events. [2024-10-31 22:11:27,799 INFO L125 PetriNetUnfolderBase]: For 3089/3093 co-relation queries the response was YES. [2024-10-31 22:11:27,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3558 conditions, 810 events. 431/810 cut-off events. For 3089/3093 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4111 event pairs, 59 based on Foata normal form. 9/819 useless extension candidates. Maximal degree in co-relation 3362. Up to 244 conditions per place. [2024-10-31 22:11:27,808 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 74 selfloop transitions, 54 changer transitions 3/133 dead transitions. [2024-10-31 22:11:27,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 133 transitions, 1595 flow [2024-10-31 22:11:27,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:11:27,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:11:27,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-10-31 22:11:27,810 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55078125 [2024-10-31 22:11:27,810 INFO L175 Difference]: Start difference. First operand has 80 places, 88 transitions, 1066 flow. Second operand 8 states and 141 transitions. [2024-10-31 22:11:27,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 133 transitions, 1595 flow [2024-10-31 22:11:27,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 133 transitions, 1495 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-10-31 22:11:27,827 INFO L231 Difference]: Finished difference. Result has 85 places, 90 transitions, 1107 flow [2024-10-31 22:11:27,828 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=968, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1107, PETRI_PLACES=85, PETRI_TRANSITIONS=90} [2024-10-31 22:11:27,828 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 52 predicate places. [2024-10-31 22:11:27,829 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 90 transitions, 1107 flow [2024-10-31 22:11:27,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 22:11:27,829 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:27,829 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:27,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-31 22:11:27,829 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-31 22:11:27,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:27,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1066161871, now seen corresponding path program 3 times [2024-10-31 22:11:27,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:27,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316098995] [2024-10-31 22:11:27,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:27,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:27,904 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 22:11:27,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:27,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316098995] [2024-10-31 22:11:27,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316098995] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:27,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:27,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:11:27,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388608718] [2024-10-31 22:11:27,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:27,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:11:27,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:27,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:11:27,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:11:27,907 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-31 22:11:27,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 90 transitions, 1107 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 22:11:27,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:27,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-31 22:11:27,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:28,220 INFO L124 PetriNetUnfolderBase]: 471/893 cut-off events. [2024-10-31 22:11:28,220 INFO L125 PetriNetUnfolderBase]: For 3627/3631 co-relation queries the response was YES. [2024-10-31 22:11:28,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3915 conditions, 893 events. 471/893 cut-off events. For 3627/3631 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4684 event pairs, 70 based on Foata normal form. 8/901 useless extension candidates. Maximal degree in co-relation 3641. Up to 375 conditions per place. [2024-10-31 22:11:28,230 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 72 selfloop transitions, 54 changer transitions 3/131 dead transitions. [2024-10-31 22:11:28,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 131 transitions, 1622 flow [2024-10-31 22:11:28,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:11:28,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:11:28,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-10-31 22:11:28,232 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.53515625 [2024-10-31 22:11:28,232 INFO L175 Difference]: Start difference. First operand has 85 places, 90 transitions, 1107 flow. Second operand 8 states and 137 transitions. [2024-10-31 22:11:28,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 131 transitions, 1622 flow [2024-10-31 22:11:28,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 131 transitions, 1521 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-10-31 22:11:28,251 INFO L231 Difference]: Finished difference. Result has 89 places, 92 transitions, 1145 flow [2024-10-31 22:11:28,251 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1006, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1145, PETRI_PLACES=89, PETRI_TRANSITIONS=92} [2024-10-31 22:11:28,251 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 56 predicate places. [2024-10-31 22:11:28,252 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 92 transitions, 1145 flow [2024-10-31 22:11:28,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 22:11:28,252 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:28,252 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:28,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-31 22:11:28,253 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-31 22:11:28,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:28,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1067155193, now seen corresponding path program 1 times [2024-10-31 22:11:28,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:28,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735901819] [2024-10-31 22:11:28,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:28,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:28,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:28,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:28,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:28,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735901819] [2024-10-31 22:11:28,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735901819] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:28,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:28,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:11:28,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868512391] [2024-10-31 22:11:28,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:28,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:11:28,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:28,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:11:28,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:11:28,320 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-10-31 22:11:28,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 92 transitions, 1145 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 22:11:28,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:28,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-10-31 22:11:28,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:28,544 INFO L124 PetriNetUnfolderBase]: 441/830 cut-off events. [2024-10-31 22:11:28,544 INFO L125 PetriNetUnfolderBase]: For 3635/3635 co-relation queries the response was YES. [2024-10-31 22:11:28,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3625 conditions, 830 events. 441/830 cut-off events. For 3635/3635 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4268 event pairs, 105 based on Foata normal form. 16/845 useless extension candidates. Maximal degree in co-relation 3371. Up to 499 conditions per place. [2024-10-31 22:11:28,558 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 64 selfloop transitions, 42 changer transitions 0/108 dead transitions. [2024-10-31 22:11:28,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 108 transitions, 1467 flow [2024-10-31 22:11:28,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:11:28,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:11:28,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2024-10-31 22:11:28,560 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48125 [2024-10-31 22:11:28,560 INFO L175 Difference]: Start difference. First operand has 89 places, 92 transitions, 1145 flow. Second operand 5 states and 77 transitions. [2024-10-31 22:11:28,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 108 transitions, 1467 flow [2024-10-31 22:11:28,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 108 transitions, 1320 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-10-31 22:11:28,578 INFO L231 Difference]: Finished difference. Result has 83 places, 88 transitions, 1084 flow [2024-10-31 22:11:28,578 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=881, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1084, PETRI_PLACES=83, PETRI_TRANSITIONS=88} [2024-10-31 22:11:28,578 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 50 predicate places. [2024-10-31 22:11:28,578 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 88 transitions, 1084 flow [2024-10-31 22:11:28,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 22:11:28,579 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:28,579 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:28,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-31 22:11:28,579 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-31 22:11:28,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:28,580 INFO L85 PathProgramCache]: Analyzing trace with hash 544087888, now seen corresponding path program 1 times [2024-10-31 22:11:28,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:28,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164989325] [2024-10-31 22:11:28,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:28,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:28,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:28,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:28,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:28,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164989325] [2024-10-31 22:11:28,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164989325] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:11:28,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23024466] [2024-10-31 22:11:28,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:28,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:11:28,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f908f0-512d-413a-be54-020cf3e63909/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:28,649 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f908f0-512d-413a-be54-020cf3e63909/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:11:28,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f908f0-512d-413a-be54-020cf3e63909/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:11:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:28,714 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:11:28,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:11:28,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:28,791 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:11:28,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:28,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23024466] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-31 22:11:28,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-31 22:11:28,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 6 [2024-10-31 22:11:28,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165534536] [2024-10-31 22:11:28,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:28,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:11:28,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:28,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:11:28,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:11:28,874 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-31 22:11:28,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 88 transitions, 1084 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 22:11:28,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:28,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-31 22:11:28,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:29,219 INFO L124 PetriNetUnfolderBase]: 480/915 cut-off events. [2024-10-31 22:11:29,220 INFO L125 PetriNetUnfolderBase]: For 3495/3495 co-relation queries the response was YES. [2024-10-31 22:11:29,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3940 conditions, 915 events. 480/915 cut-off events. For 3495/3495 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4842 event pairs, 50 based on Foata normal form. 13/928 useless extension candidates. Maximal degree in co-relation 3728. Up to 346 conditions per place. [2024-10-31 22:11:29,228 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 107 selfloop transitions, 33 changer transitions 0/142 dead transitions. [2024-10-31 22:11:29,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 142 transitions, 1723 flow [2024-10-31 22:11:29,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:11:29,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:11:29,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-10-31 22:11:29,230 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5267857142857143 [2024-10-31 22:11:29,230 INFO L175 Difference]: Start difference. First operand has 83 places, 88 transitions, 1084 flow. Second operand 7 states and 118 transitions. [2024-10-31 22:11:29,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 142 transitions, 1723 flow [2024-10-31 22:11:29,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 142 transitions, 1687 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:11:29,248 INFO L231 Difference]: Finished difference. Result has 91 places, 105 transitions, 1302 flow [2024-10-31 22:11:29,249 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1049, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1302, PETRI_PLACES=91, PETRI_TRANSITIONS=105} [2024-10-31 22:11:29,250 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 58 predicate places. [2024-10-31 22:11:29,250 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 105 transitions, 1302 flow [2024-10-31 22:11:29,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 22:11:29,250 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:29,250 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:29,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f908f0-512d-413a-be54-020cf3e63909/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-31 22:11:29,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f908f0-512d-413a-be54-020cf3e63909/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:11:29,451 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-31 22:11:29,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:29,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1640378568, now seen corresponding path program 1 times [2024-10-31 22:11:29,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:29,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899507387] [2024-10-31 22:11:29,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:29,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:29,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:29,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:29,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:29,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899507387] [2024-10-31 22:11:29,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899507387] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:29,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:29,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:11:29,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727159693] [2024-10-31 22:11:29,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:29,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:11:29,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:29,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:11:29,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:11:29,503 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-31 22:11:29,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 105 transitions, 1302 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 22:11:29,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:29,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-31 22:11:29,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:29,837 INFO L124 PetriNetUnfolderBase]: 524/1010 cut-off events. [2024-10-31 22:11:29,838 INFO L125 PetriNetUnfolderBase]: For 5329/5329 co-relation queries the response was YES. [2024-10-31 22:11:29,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4674 conditions, 1010 events. 524/1010 cut-off events. For 5329/5329 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5595 event pairs, 70 based on Foata normal form. 6/1016 useless extension candidates. Maximal degree in co-relation 4350. Up to 220 conditions per place. [2024-10-31 22:11:29,848 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 131 selfloop transitions, 45 changer transitions 5/183 dead transitions. [2024-10-31 22:11:29,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 183 transitions, 2326 flow [2024-10-31 22:11:29,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:11:29,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:11:29,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-10-31 22:11:29,850 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55859375 [2024-10-31 22:11:29,850 INFO L175 Difference]: Start difference. First operand has 91 places, 105 transitions, 1302 flow. Second operand 8 states and 143 transitions. [2024-10-31 22:11:29,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 183 transitions, 2326 flow [2024-10-31 22:11:29,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 183 transitions, 2281 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-10-31 22:11:29,876 INFO L231 Difference]: Finished difference. Result has 103 places, 130 transitions, 1704 flow [2024-10-31 22:11:29,877 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1273, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1704, PETRI_PLACES=103, PETRI_TRANSITIONS=130} [2024-10-31 22:11:29,878 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 70 predicate places. [2024-10-31 22:11:29,878 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 130 transitions, 1704 flow [2024-10-31 22:11:29,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 22:11:29,878 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:29,878 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:29,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-31 22:11:29,879 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-31 22:11:29,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:29,879 INFO L85 PathProgramCache]: Analyzing trace with hash -284649751, now seen corresponding path program 1 times [2024-10-31 22:11:29,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:29,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568321081] [2024-10-31 22:11:29,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:29,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:29,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:29,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:29,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:29,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568321081] [2024-10-31 22:11:29,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568321081] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:29,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:29,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:11:29,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090275411] [2024-10-31 22:11:29,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:29,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:11:29,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:29,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:11:29,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:11:29,933 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-31 22:11:29,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 130 transitions, 1704 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 22:11:29,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:29,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-31 22:11:29,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:30,364 INFO L124 PetriNetUnfolderBase]: 593/1140 cut-off events. [2024-10-31 22:11:30,364 INFO L125 PetriNetUnfolderBase]: For 7421/7425 co-relation queries the response was YES. [2024-10-31 22:11:30,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5738 conditions, 1140 events. 593/1140 cut-off events. For 7421/7425 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6250 event pairs, 56 based on Foata normal form. 18/1158 useless extension candidates. Maximal degree in co-relation 5444. Up to 317 conditions per place. [2024-10-31 22:11:30,379 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 124 selfloop transitions, 88 changer transitions 3/217 dead transitions. [2024-10-31 22:11:30,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 217 transitions, 2953 flow [2024-10-31 22:11:30,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 22:11:30,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 22:11:30,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-10-31 22:11:30,381 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-31 22:11:30,381 INFO L175 Difference]: Start difference. First operand has 103 places, 130 transitions, 1704 flow. Second operand 9 states and 144 transitions. [2024-10-31 22:11:30,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 217 transitions, 2953 flow [2024-10-31 22:11:30,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 217 transitions, 2937 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-10-31 22:11:30,427 INFO L231 Difference]: Finished difference. Result has 116 places, 175 transitions, 2556 flow [2024-10-31 22:11:30,427 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1694, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2556, PETRI_PLACES=116, PETRI_TRANSITIONS=175} [2024-10-31 22:11:30,428 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 83 predicate places. [2024-10-31 22:11:30,428 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 175 transitions, 2556 flow [2024-10-31 22:11:30,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 22:11:30,429 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:30,429 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:30,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-31 22:11:30,430 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-31 22:11:30,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:30,430 INFO L85 PathProgramCache]: Analyzing trace with hash 7656323, now seen corresponding path program 2 times [2024-10-31 22:11:30,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:30,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240909073] [2024-10-31 22:11:30,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:30,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:30,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:30,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:30,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:30,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240909073] [2024-10-31 22:11:30,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240909073] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:30,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:30,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:11:30,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955892305] [2024-10-31 22:11:30,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:30,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:11:30,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:30,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:11:30,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:11:30,492 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-31 22:11:30,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 175 transitions, 2556 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 22:11:30,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:30,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-31 22:11:30,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:30,850 INFO L124 PetriNetUnfolderBase]: 591/1132 cut-off events. [2024-10-31 22:11:30,850 INFO L125 PetriNetUnfolderBase]: For 10384/10388 co-relation queries the response was YES. [2024-10-31 22:11:30,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6359 conditions, 1132 events. 591/1132 cut-off events. For 10384/10388 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6240 event pairs, 90 based on Foata normal form. 16/1148 useless extension candidates. Maximal degree in co-relation 6195. Up to 272 conditions per place. [2024-10-31 22:11:30,864 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 167 selfloop transitions, 41 changer transitions 10/220 dead transitions. [2024-10-31 22:11:30,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 220 transitions, 3412 flow [2024-10-31 22:11:30,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:11:30,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:11:30,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-10-31 22:11:30,866 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-10-31 22:11:30,866 INFO L175 Difference]: Start difference. First operand has 116 places, 175 transitions, 2556 flow. Second operand 7 states and 120 transitions. [2024-10-31 22:11:30,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 220 transitions, 3412 flow [2024-10-31 22:11:30,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 220 transitions, 3336 flow, removed 33 selfloop flow, removed 1 redundant places. [2024-10-31 22:11:30,917 INFO L231 Difference]: Finished difference. Result has 122 places, 178 transitions, 2611 flow [2024-10-31 22:11:30,918 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2478, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2611, PETRI_PLACES=122, PETRI_TRANSITIONS=178} [2024-10-31 22:11:30,918 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 89 predicate places. [2024-10-31 22:11:30,919 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 178 transitions, 2611 flow [2024-10-31 22:11:30,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 22:11:30,919 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:30,919 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:30,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-31 22:11:30,920 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-31 22:11:30,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:30,920 INFO L85 PathProgramCache]: Analyzing trace with hash -2112510975, now seen corresponding path program 3 times [2024-10-31 22:11:30,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:30,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054283967] [2024-10-31 22:11:30,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:30,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:30,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:30,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:30,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:30,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054283967] [2024-10-31 22:11:30,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054283967] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:30,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:30,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:11:30,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588224708] [2024-10-31 22:11:30,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:30,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:11:30,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:30,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:11:30,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:11:30,975 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-31 22:11:30,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 178 transitions, 2611 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 22:11:30,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:30,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-31 22:11:30,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:31,416 INFO L124 PetriNetUnfolderBase]: 634/1231 cut-off events. [2024-10-31 22:11:31,416 INFO L125 PetriNetUnfolderBase]: For 11555/11555 co-relation queries the response was YES. [2024-10-31 22:11:31,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6990 conditions, 1231 events. 634/1231 cut-off events. For 11555/11555 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 7048 event pairs, 154 based on Foata normal form. 12/1239 useless extension candidates. Maximal degree in co-relation 6825. Up to 488 conditions per place. [2024-10-31 22:11:31,432 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 174 selfloop transitions, 78 changer transitions 1/255 dead transitions. [2024-10-31 22:11:31,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 255 transitions, 3943 flow [2024-10-31 22:11:31,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:11:31,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:11:31,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-10-31 22:11:31,433 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5859375 [2024-10-31 22:11:31,433 INFO L175 Difference]: Start difference. First operand has 122 places, 178 transitions, 2611 flow. Second operand 8 states and 150 transitions. [2024-10-31 22:11:31,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 255 transitions, 3943 flow [2024-10-31 22:11:31,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 255 transitions, 3883 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-10-31 22:11:31,484 INFO L231 Difference]: Finished difference. Result has 131 places, 199 transitions, 3161 flow [2024-10-31 22:11:31,484 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2583, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3161, PETRI_PLACES=131, PETRI_TRANSITIONS=199} [2024-10-31 22:11:31,484 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 98 predicate places. [2024-10-31 22:11:31,485 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 199 transitions, 3161 flow [2024-10-31 22:11:31,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 22:11:31,485 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:31,485 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:31,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-31 22:11:31,485 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-31 22:11:31,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:31,486 INFO L85 PathProgramCache]: Analyzing trace with hash 685103370, now seen corresponding path program 2 times [2024-10-31 22:11:31,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:31,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055575571] [2024-10-31 22:11:31,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:31,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:31,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:31,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:31,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055575571] [2024-10-31 22:11:31,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055575571] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:31,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:31,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:11:31,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335009834] [2024-10-31 22:11:31,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:31,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:11:31,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:31,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:11:31,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:11:31,534 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-31 22:11:31,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 199 transitions, 3161 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 22:11:31,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:31,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-31 22:11:31,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:31,980 INFO L124 PetriNetUnfolderBase]: 649/1261 cut-off events. [2024-10-31 22:11:31,980 INFO L125 PetriNetUnfolderBase]: For 13524/13524 co-relation queries the response was YES. [2024-10-31 22:11:31,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7485 conditions, 1261 events. 649/1261 cut-off events. For 13524/13524 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 7310 event pairs, 145 based on Foata normal form. 13/1274 useless extension candidates. Maximal degree in co-relation 7366. Up to 471 conditions per place. [2024-10-31 22:11:31,998 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 152 selfloop transitions, 93 changer transitions 1/248 dead transitions. [2024-10-31 22:11:31,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 248 transitions, 4107 flow [2024-10-31 22:11:31,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:11:31,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:11:32,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-10-31 22:11:32,000 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55859375 [2024-10-31 22:11:32,000 INFO L175 Difference]: Start difference. First operand has 131 places, 199 transitions, 3161 flow. Second operand 8 states and 143 transitions. [2024-10-31 22:11:32,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 248 transitions, 4107 flow [2024-10-31 22:11:32,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 248 transitions, 4022 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-10-31 22:11:32,063 INFO L231 Difference]: Finished difference. Result has 140 places, 212 transitions, 3637 flow [2024-10-31 22:11:32,063 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3021, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3637, PETRI_PLACES=140, PETRI_TRANSITIONS=212} [2024-10-31 22:11:32,067 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 107 predicate places. [2024-10-31 22:11:32,067 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 212 transitions, 3637 flow [2024-10-31 22:11:32,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 22:11:32,068 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:32,068 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:32,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-10-31 22:11:32,068 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-31 22:11:32,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:32,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1807385283, now seen corresponding path program 4 times [2024-10-31 22:11:32,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:32,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943203145] [2024-10-31 22:11:32,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:32,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:32,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:32,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:32,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:32,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943203145] [2024-10-31 22:11:32,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943203145] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:32,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:32,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:11:32,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418556951] [2024-10-31 22:11:32,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:32,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:11:32,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:32,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:11:32,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:11:32,116 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-31 22:11:32,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 212 transitions, 3637 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 22:11:32,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:32,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-31 22:11:32,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:32,547 INFO L124 PetriNetUnfolderBase]: 600/1176 cut-off events. [2024-10-31 22:11:32,548 INFO L125 PetriNetUnfolderBase]: For 15209/15209 co-relation queries the response was YES. [2024-10-31 22:11:32,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7366 conditions, 1176 events. 600/1176 cut-off events. For 15209/15209 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 6745 event pairs, 100 based on Foata normal form. 7/1183 useless extension candidates. Maximal degree in co-relation 7232. Up to 304 conditions per place. [2024-10-31 22:11:32,565 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 171 selfloop transitions, 65 changer transitions 4/242 dead transitions. [2024-10-31 22:11:32,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 242 transitions, 4310 flow [2024-10-31 22:11:32,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:11:32,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:11:32,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-10-31 22:11:32,566 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5234375 [2024-10-31 22:11:32,566 INFO L175 Difference]: Start difference. First operand has 140 places, 212 transitions, 3637 flow. Second operand 8 states and 134 transitions. [2024-10-31 22:11:32,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 242 transitions, 4310 flow [2024-10-31 22:11:32,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 242 transitions, 4286 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-10-31 22:11:32,653 INFO L231 Difference]: Finished difference. Result has 149 places, 209 transitions, 3770 flow [2024-10-31 22:11:32,654 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3496, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3770, PETRI_PLACES=149, PETRI_TRANSITIONS=209} [2024-10-31 22:11:32,656 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 116 predicate places. [2024-10-31 22:11:32,656 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 209 transitions, 3770 flow [2024-10-31 22:11:32,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 22:11:32,656 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:32,656 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:32,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-10-31 22:11:32,657 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-31 22:11:32,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:32,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1784249207, now seen corresponding path program 5 times [2024-10-31 22:11:32,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:32,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025537839] [2024-10-31 22:11:32,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:32,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:32,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:32,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:32,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:32,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025537839] [2024-10-31 22:11:32,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025537839] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:32,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:32,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:11:32,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610475359] [2024-10-31 22:11:32,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:32,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:11:32,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:32,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:11:32,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:11:32,714 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-31 22:11:32,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 209 transitions, 3770 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 22:11:32,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:32,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-31 22:11:32,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:33,240 INFO L124 PetriNetUnfolderBase]: 560/1112 cut-off events. [2024-10-31 22:11:33,240 INFO L125 PetriNetUnfolderBase]: For 16838/16838 co-relation queries the response was YES. [2024-10-31 22:11:33,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7241 conditions, 1112 events. 560/1112 cut-off events. For 16838/16838 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6327 event pairs, 101 based on Foata normal form. 12/1124 useless extension candidates. Maximal degree in co-relation 6912. Up to 336 conditions per place. [2024-10-31 22:11:33,265 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 147 selfloop transitions, 97 changer transitions 3/249 dead transitions. [2024-10-31 22:11:33,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 249 transitions, 4536 flow [2024-10-31 22:11:33,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:11:33,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:11:33,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-10-31 22:11:33,267 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.59765625 [2024-10-31 22:11:33,267 INFO L175 Difference]: Start difference. First operand has 149 places, 209 transitions, 3770 flow. Second operand 8 states and 153 transitions. [2024-10-31 22:11:33,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 249 transitions, 4536 flow [2024-10-31 22:11:33,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 249 transitions, 4413 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-10-31 22:11:33,385 INFO L231 Difference]: Finished difference. Result has 150 places, 203 transitions, 3809 flow [2024-10-31 22:11:33,385 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3540, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3809, PETRI_PLACES=150, PETRI_TRANSITIONS=203} [2024-10-31 22:11:33,386 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 117 predicate places. [2024-10-31 22:11:33,386 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 203 transitions, 3809 flow [2024-10-31 22:11:33,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 22:11:33,387 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:33,387 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:33,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-10-31 22:11:33,387 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-31 22:11:33,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:33,388 INFO L85 PathProgramCache]: Analyzing trace with hash 286896256, now seen corresponding path program 3 times [2024-10-31 22:11:33,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:33,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790889484] [2024-10-31 22:11:33,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:33,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:33,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:33,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:33,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:33,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790889484] [2024-10-31 22:11:33,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790889484] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:33,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:33,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:11:33,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636318787] [2024-10-31 22:11:33,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:33,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:11:33,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:33,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:11:33,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:11:33,450 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-31 22:11:33,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 203 transitions, 3809 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 22:11:33,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:33,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-31 22:11:33,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:33,970 INFO L124 PetriNetUnfolderBase]: 515/1038 cut-off events. [2024-10-31 22:11:33,970 INFO L125 PetriNetUnfolderBase]: For 17333/17333 co-relation queries the response was YES. [2024-10-31 22:11:33,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6937 conditions, 1038 events. 515/1038 cut-off events. For 17333/17333 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5895 event pairs, 127 based on Foata normal form. 13/1050 useless extension candidates. Maximal degree in co-relation 6641. Up to 490 conditions per place. [2024-10-31 22:11:33,986 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 152 selfloop transitions, 78 changer transitions 1/233 dead transitions. [2024-10-31 22:11:33,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 233 transitions, 4415 flow [2024-10-31 22:11:33,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:11:33,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:11:33,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-10-31 22:11:33,988 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.56640625 [2024-10-31 22:11:33,988 INFO L175 Difference]: Start difference. First operand has 150 places, 203 transitions, 3809 flow. Second operand 8 states and 145 transitions. [2024-10-31 22:11:33,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 233 transitions, 4415 flow [2024-10-31 22:11:34,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 233 transitions, 4369 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-10-31 22:11:34,095 INFO L231 Difference]: Finished difference. Result has 154 places, 200 transitions, 3883 flow [2024-10-31 22:11:34,095 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3586, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3883, PETRI_PLACES=154, PETRI_TRANSITIONS=200} [2024-10-31 22:11:34,096 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 121 predicate places. [2024-10-31 22:11:34,100 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 200 transitions, 3883 flow [2024-10-31 22:11:34,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 22:11:34,100 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:34,101 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:34,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-10-31 22:11:34,101 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-31 22:11:34,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:34,101 INFO L85 PathProgramCache]: Analyzing trace with hash -2038600562, now seen corresponding path program 4 times [2024-10-31 22:11:34,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:34,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948522349] [2024-10-31 22:11:34,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:34,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:34,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:34,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:34,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:34,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948522349] [2024-10-31 22:11:34,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948522349] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:34,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:34,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:11:34,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440662986] [2024-10-31 22:11:34,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:34,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:11:34,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:34,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:11:34,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:11:34,236 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-31 22:11:34,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 200 transitions, 3883 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 22:11:34,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:34,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-31 22:11:34,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:34,699 INFO L124 PetriNetUnfolderBase]: 516/1042 cut-off events. [2024-10-31 22:11:34,700 INFO L125 PetriNetUnfolderBase]: For 19090/19094 co-relation queries the response was YES. [2024-10-31 22:11:34,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7173 conditions, 1042 events. 516/1042 cut-off events. For 19090/19094 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5924 event pairs, 83 based on Foata normal form. 10/1051 useless extension candidates. Maximal degree in co-relation 6741. Up to 293 conditions per place. [2024-10-31 22:11:34,717 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 163 selfloop transitions, 60 changer transitions 4/229 dead transitions. [2024-10-31 22:11:34,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 229 transitions, 4536 flow [2024-10-31 22:11:34,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:11:34,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:11:34,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-10-31 22:11:34,719 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-10-31 22:11:34,719 INFO L175 Difference]: Start difference. First operand has 154 places, 200 transitions, 3883 flow. Second operand 8 states and 136 transitions. [2024-10-31 22:11:34,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 229 transitions, 4536 flow [2024-10-31 22:11:34,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 229 transitions, 4431 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-10-31 22:11:34,811 INFO L231 Difference]: Finished difference. Result has 159 places, 201 transitions, 3930 flow [2024-10-31 22:11:34,811 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3779, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3930, PETRI_PLACES=159, PETRI_TRANSITIONS=201} [2024-10-31 22:11:34,812 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 126 predicate places. [2024-10-31 22:11:34,812 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 201 transitions, 3930 flow [2024-10-31 22:11:34,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 22:11:34,813 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:34,813 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:34,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-10-31 22:11:34,813 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-31 22:11:34,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:34,814 INFO L85 PathProgramCache]: Analyzing trace with hash 490451348, now seen corresponding path program 5 times [2024-10-31 22:11:34,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:34,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81694781] [2024-10-31 22:11:34,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:34,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:34,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:34,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:34,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:34,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81694781] [2024-10-31 22:11:34,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81694781] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:34,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:34,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:11:34,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410979272] [2024-10-31 22:11:34,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:34,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:11:34,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:34,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:11:34,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:11:34,863 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-31 22:11:34,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 201 transitions, 3930 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 22:11:34,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:34,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-31 22:11:34,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:35,201 INFO L124 PetriNetUnfolderBase]: 453/918 cut-off events. [2024-10-31 22:11:35,202 INFO L125 PetriNetUnfolderBase]: For 17599/17603 co-relation queries the response was YES. [2024-10-31 22:11:35,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6384 conditions, 918 events. 453/918 cut-off events. For 17599/17603 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5035 event pairs, 83 based on Foata normal form. 10/927 useless extension candidates. Maximal degree in co-relation 6115. Up to 293 conditions per place. [2024-10-31 22:11:35,214 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 152 selfloop transitions, 35 changer transitions 9/198 dead transitions. [2024-10-31 22:11:35,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 198 transitions, 4044 flow [2024-10-31 22:11:35,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:11:35,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:11:35,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 107 transitions. [2024-10-31 22:11:35,216 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47767857142857145 [2024-10-31 22:11:35,216 INFO L175 Difference]: Start difference. First operand has 159 places, 201 transitions, 3930 flow. Second operand 7 states and 107 transitions. [2024-10-31 22:11:35,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 198 transitions, 4044 flow [2024-10-31 22:11:35,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 198 transitions, 3954 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-10-31 22:11:35,292 INFO L231 Difference]: Finished difference. Result has 162 places, 180 transitions, 3469 flow [2024-10-31 22:11:35,292 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3518, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3469, PETRI_PLACES=162, PETRI_TRANSITIONS=180} [2024-10-31 22:11:35,293 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 129 predicate places. [2024-10-31 22:11:35,293 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 180 transitions, 3469 flow [2024-10-31 22:11:35,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 22:11:35,293 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:35,294 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:35,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-10-31 22:11:35,294 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-31 22:11:35,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:35,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1409178169, now seen corresponding path program 6 times [2024-10-31 22:11:35,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:35,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513201594] [2024-10-31 22:11:35,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:35,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:35,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:35,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:35,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:35,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513201594] [2024-10-31 22:11:35,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513201594] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:35,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:35,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:11:35,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607140054] [2024-10-31 22:11:35,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:35,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:11:35,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:35,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:11:35,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:11:35,334 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-31 22:11:35,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 180 transitions, 3469 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 22:11:35,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:35,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-31 22:11:35,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:35,627 INFO L124 PetriNetUnfolderBase]: 388/778 cut-off events. [2024-10-31 22:11:35,628 INFO L125 PetriNetUnfolderBase]: For 15353/15357 co-relation queries the response was YES. [2024-10-31 22:11:35,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5467 conditions, 778 events. 388/778 cut-off events. For 15353/15357 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4007 event pairs, 62 based on Foata normal form. 11/788 useless extension candidates. Maximal degree in co-relation 5342. Up to 235 conditions per place. [2024-10-31 22:11:35,638 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 120 selfloop transitions, 52 changer transitions 5/179 dead transitions. [2024-10-31 22:11:35,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 179 transitions, 3579 flow [2024-10-31 22:11:35,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:11:35,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:11:35,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 109 transitions. [2024-10-31 22:11:35,640 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48660714285714285 [2024-10-31 22:11:35,640 INFO L175 Difference]: Start difference. First operand has 162 places, 180 transitions, 3469 flow. Second operand 7 states and 109 transitions. [2024-10-31 22:11:35,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 179 transitions, 3579 flow [2024-10-31 22:11:35,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 179 transitions, 3389 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-10-31 22:11:35,699 INFO L231 Difference]: Finished difference. Result has 150 places, 163 transitions, 3037 flow [2024-10-31 22:11:35,700 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2974, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3037, PETRI_PLACES=150, PETRI_TRANSITIONS=163} [2024-10-31 22:11:35,700 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 117 predicate places. [2024-10-31 22:11:35,701 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 163 transitions, 3037 flow [2024-10-31 22:11:35,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 22:11:35,701 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:35,701 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:35,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-10-31 22:11:35,702 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-31 22:11:35,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:35,702 INFO L85 PathProgramCache]: Analyzing trace with hash -656087056, now seen corresponding path program 1 times [2024-10-31 22:11:35,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:35,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206701926] [2024-10-31 22:11:35,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:35,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:35,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:35,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:35,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:35,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206701926] [2024-10-31 22:11:35,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206701926] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:11:35,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535157397] [2024-10-31 22:11:35,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:35,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:11:35,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f908f0-512d-413a-be54-020cf3e63909/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:35,867 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f908f0-512d-413a-be54-020cf3e63909/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:11:35,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f908f0-512d-413a-be54-020cf3e63909/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:11:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:35,936 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-31 22:11:35,937 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:11:36,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:36,198 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:11:36,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:36,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535157397] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:11:36,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:11:36,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2024-10-31 22:11:36,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356365727] [2024-10-31 22:11:36,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:11:36,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-31 22:11:36,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:36,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-31 22:11:36,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2024-10-31 22:11:36,522 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 32 [2024-10-31 22:11:36,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 163 transitions, 3037 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 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 22:11:36,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:36,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 32 [2024-10-31 22:11:36,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:40,178 INFO L124 PetriNetUnfolderBase]: 1041/2023 cut-off events. [2024-10-31 22:11:40,178 INFO L125 PetriNetUnfolderBase]: For 32903/32903 co-relation queries the response was YES. [2024-10-31 22:11:40,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13638 conditions, 2023 events. 1041/2023 cut-off events. For 32903/32903 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 12684 event pairs, 52 based on Foata normal form. 45/2068 useless extension candidates. Maximal degree in co-relation 13291. Up to 352 conditions per place. [2024-10-31 22:11:40,198 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 205 selfloop transitions, 348 changer transitions 10/565 dead transitions. [2024-10-31 22:11:40,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 565 transitions, 9582 flow [2024-10-31 22:11:40,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-10-31 22:11:40,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2024-10-31 22:11:40,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 672 transitions. [2024-10-31 22:11:40,201 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.27631578947368424 [2024-10-31 22:11:40,201 INFO L175 Difference]: Start difference. First operand has 150 places, 163 transitions, 3037 flow. Second operand 76 states and 672 transitions. [2024-10-31 22:11:40,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 565 transitions, 9582 flow [2024-10-31 22:11:40,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 565 transitions, 9074 flow, removed 13 selfloop flow, removed 12 redundant places. [2024-10-31 22:11:40,321 INFO L231 Difference]: Finished difference. Result has 219 places, 400 transitions, 7933 flow [2024-10-31 22:11:40,321 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2802, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=76, PETRI_FLOW=7933, PETRI_PLACES=219, PETRI_TRANSITIONS=400} [2024-10-31 22:11:40,322 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 186 predicate places. [2024-10-31 22:11:40,322 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 400 transitions, 7933 flow [2024-10-31 22:11:40,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 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 22:11:40,322 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:40,323 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:40,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f908f0-512d-413a-be54-020cf3e63909/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-31 22:11:40,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f908f0-512d-413a-be54-020cf3e63909/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:11:40,530 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-31 22:11:40,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:40,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1782991822, now seen corresponding path program 1 times [2024-10-31 22:11:40,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:40,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868221167] [2024-10-31 22:11:40,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:40,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:11:40,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:40,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:40,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:11:40,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868221167] [2024-10-31 22:11:40,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868221167] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:11:40,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991683463] [2024-10-31 22:11:40,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:40,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:11:40,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f908f0-512d-413a-be54-020cf3e63909/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:40,850 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f908f0-512d-413a-be54-020cf3e63909/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:11:40,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f908f0-512d-413a-be54-020cf3e63909/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:11:40,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:40,988 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-31 22:11:40,989 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:11:41,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:41,263 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:11:41,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:41,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991683463] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:11:41,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:11:41,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2024-10-31 22:11:41,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291632989] [2024-10-31 22:11:41,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:11:41,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-31 22:11:41,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:11:41,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-31 22:11:41,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2024-10-31 22:11:41,504 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 32 [2024-10-31 22:11:41,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 400 transitions, 7933 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 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 22:11:41,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:11:41,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 32 [2024-10-31 22:11:41,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:11:44,643 INFO L124 PetriNetUnfolderBase]: 1148/2276 cut-off events. [2024-10-31 22:11:44,643 INFO L125 PetriNetUnfolderBase]: For 36067/36067 co-relation queries the response was YES. [2024-10-31 22:11:44,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15530 conditions, 2276 events. 1148/2276 cut-off events. For 36067/36067 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 14612 event pairs, 75 based on Foata normal form. 40/2316 useless extension candidates. Maximal degree in co-relation 15156. Up to 495 conditions per place. [2024-10-31 22:11:44,689 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 205 selfloop transitions, 320 changer transitions 18/545 dead transitions. [2024-10-31 22:11:44,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 545 transitions, 10122 flow [2024-10-31 22:11:44,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-10-31 22:11:44,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2024-10-31 22:11:44,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 521 transitions. [2024-10-31 22:11:44,695 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29602272727272727 [2024-10-31 22:11:44,695 INFO L175 Difference]: Start difference. First operand has 219 places, 400 transitions, 7933 flow. Second operand 55 states and 521 transitions. [2024-10-31 22:11:44,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 545 transitions, 10122 flow [2024-10-31 22:11:45,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 545 transitions, 9318 flow, removed 118 selfloop flow, removed 9 redundant places. [2024-10-31 22:11:45,041 INFO L231 Difference]: Finished difference. Result has 269 places, 410 transitions, 8069 flow [2024-10-31 22:11:45,042 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=7150, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=300, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=8069, PETRI_PLACES=269, PETRI_TRANSITIONS=410} [2024-10-31 22:11:45,043 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 236 predicate places. [2024-10-31 22:11:45,043 INFO L471 AbstractCegarLoop]: Abstraction has has 269 places, 410 transitions, 8069 flow [2024-10-31 22:11:45,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 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 22:11:45,043 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:11:45,043 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:45,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f908f0-512d-413a-be54-020cf3e63909/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 22:11:45,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f908f0-512d-413a-be54-020cf3e63909/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:11:45,248 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-31 22:11:45,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:45,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1146239530, now seen corresponding path program 2 times [2024-10-31 22:11:45,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:11:45,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473943241] [2024-10-31 22:11:45,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:45,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms