./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/triangular-longer-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/triangular-longer-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya --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 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:09:38,918 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:09:38,980 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 01:09:38,986 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:09:38,986 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:09:39,011 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:09:39,012 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:09:39,012 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:09:39,013 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:09:39,013 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:09:39,014 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:09:39,015 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:09:39,015 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:09:39,016 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:09:39,016 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:09:39,017 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:09:39,018 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:09:39,018 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:09:39,019 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:09:39,019 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:09:39,020 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:09:39,020 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:09:39,021 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:09:39,021 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:09:39,022 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 01:09:39,022 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 01:09:39,023 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:09:39,023 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:09:39,023 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:09:39,024 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:09:39,024 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:09:39,025 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:09:39,025 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:09:39,025 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:09:39,026 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:09:39,026 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:09:39,026 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:09:39,027 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:09:39,027 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:09:39,027 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:09:39,027 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:09:39,027 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:09:39,028 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:09:39,028 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:09:39,028 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_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 [2023-11-29 01:09:39,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:09:39,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:09:39,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:09:39,259 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:09:39,260 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:09:39,261 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread/triangular-longer-2.i [2023-11-29 01:09:42,034 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:09:42,259 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:09:42,259 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/sv-benchmarks/c/pthread/triangular-longer-2.i [2023-11-29 01:09:42,274 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/data/67f0da74e/f4771814332647008c71fc84b00aca8e/FLAG080c09e09 [2023-11-29 01:09:42,287 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/data/67f0da74e/f4771814332647008c71fc84b00aca8e [2023-11-29 01:09:42,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:09:42,291 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:09:42,292 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:09:42,293 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:09:42,297 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:09:42,297 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:09:42" (1/1) ... [2023-11-29 01:09:42,298 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46823349 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:09:42, skipping insertion in model container [2023-11-29 01:09:42,299 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:09:42" (1/1) ... [2023-11-29 01:09:42,345 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:09:42,645 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:09:42,655 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:09:42,698 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:09:42,729 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:09:42,729 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:09:42,737 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:09:42,738 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:09:42 WrapperNode [2023-11-29 01:09:42,738 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:09:42,739 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:09:42,740 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:09:42,740 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:09:42,748 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:09:42" (1/1) ... [2023-11-29 01:09:42,762 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:09:42" (1/1) ... [2023-11-29 01:09:42,784 INFO L138 Inliner]: procedures = 169, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2023-11-29 01:09:42,784 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:09:42,785 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:09:42,785 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:09:42,785 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:09:42,796 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:09:42" (1/1) ... [2023-11-29 01:09:42,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:09:42" (1/1) ... [2023-11-29 01:09:42,800 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:09:42" (1/1) ... [2023-11-29 01:09:42,815 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2023-11-29 01:09:42,815 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:09:42" (1/1) ... [2023-11-29 01:09:42,816 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:09:42" (1/1) ... [2023-11-29 01:09:42,821 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:09:42" (1/1) ... [2023-11-29 01:09:42,825 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:09:42" (1/1) ... [2023-11-29 01:09:42,827 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:09:42" (1/1) ... [2023-11-29 01:09:42,828 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:09:42" (1/1) ... [2023-11-29 01:09:42,831 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:09:42,832 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:09:42,832 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:09:42,832 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:09:42,833 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:09:42" (1/1) ... [2023-11-29 01:09:42,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:09:42,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:09:42,863 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:09:42,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:09:42,903 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-29 01:09:42,903 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-29 01:09:42,903 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-29 01:09:42,903 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-29 01:09:42,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 01:09:42,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 01:09:42,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 01:09:42,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 01:09:42,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:09:42,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 01:09:42,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:09:42,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:09:42,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 01:09:42,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 01:09:42,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 01:09:42,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:09:42,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:09:42,908 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 01:09:43,044 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:09:43,047 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:09:43,192 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:09:43,311 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:09:43,311 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 01:09:43,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:09:43 BoogieIcfgContainer [2023-11-29 01:09:43,312 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:09:43,315 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:09:43,315 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:09:43,318 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:09:43,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:09:42" (1/3) ... [2023-11-29 01:09:43,319 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29179d9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:09:43, skipping insertion in model container [2023-11-29 01:09:43,319 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:09:42" (2/3) ... [2023-11-29 01:09:43,319 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29179d9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:09:43, skipping insertion in model container [2023-11-29 01:09:43,319 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:09:43" (3/3) ... [2023-11-29 01:09:43,321 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-2.i [2023-11-29 01:09:43,328 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 01:09:43,336 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:09:43,336 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-29 01:09:43,336 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 01:09:43,374 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 01:09:43,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 32 transitions, 72 flow [2023-11-29 01:09:43,428 INFO L124 PetriNetUnfolderBase]: 2/30 cut-off events. [2023-11-29 01:09:43,428 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:09:43,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 2/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 73 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2023-11-29 01:09:43,432 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 32 transitions, 72 flow [2023-11-29 01:09:43,436 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 30 transitions, 66 flow [2023-11-29 01:09:43,447 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:09:43,455 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4021c890, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:09:43,455 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-29 01:09:43,461 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:09:43,461 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-29 01:09:43,461 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:09:43,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:09:43,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 01:09:43,463 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 01:09:43,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:09:43,469 INFO L85 PathProgramCache]: Analyzing trace with hash 223253781, now seen corresponding path program 1 times [2023-11-29 01:09:43,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:09:43,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818263663] [2023-11-29 01:09:43,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:09:43,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:09:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:09:43,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:09:43,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:09:43,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818263663] [2023-11-29 01:09:43,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818263663] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:09:43,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:09:43,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:09:43,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116195878] [2023-11-29 01:09:43,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:09:43,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:09:43,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:09:43,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:09:43,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:09:43,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-29 01:09:43,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:43,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:09:43,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-29 01:09:43,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:09:43,904 INFO L124 PetriNetUnfolderBase]: 288/572 cut-off events. [2023-11-29 01:09:43,904 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 01:09:43,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1055 conditions, 572 events. 288/572 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3048 event pairs, 118 based on Foata normal form. 0/427 useless extension candidates. Maximal degree in co-relation 1045. Up to 241 conditions per place. [2023-11-29 01:09:43,913 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 27 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2023-11-29 01:09:43,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 42 transitions, 150 flow [2023-11-29 01:09:43,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:09:43,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:09:43,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2023-11-29 01:09:43,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7604166666666666 [2023-11-29 01:09:43,924 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 73 transitions. [2023-11-29 01:09:43,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 73 transitions. [2023-11-29 01:09:43,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:09:43,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 73 transitions. [2023-11-29 01:09:43,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:43,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:43,933 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:43,935 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 66 flow. Second operand 3 states and 73 transitions. [2023-11-29 01:09:43,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 42 transitions, 150 flow [2023-11-29 01:09:43,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 42 transitions, 148 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 01:09:43,940 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 86 flow [2023-11-29 01:09:43,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2023-11-29 01:09:43,944 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2023-11-29 01:09:43,945 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 86 flow [2023-11-29 01:09:43,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:43,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:09:43,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 01:09:43,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:09:43,945 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 01:09:43,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:09:43,946 INFO L85 PathProgramCache]: Analyzing trace with hash 223253782, now seen corresponding path program 1 times [2023-11-29 01:09:43,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:09:43,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44916823] [2023-11-29 01:09:43,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:09:43,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:09:43,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:09:44,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:09:44,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:09:44,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44916823] [2023-11-29 01:09:44,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44916823] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:09:44,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:09:44,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:09:44,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916138329] [2023-11-29 01:09:44,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:09:44,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:09:44,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:09:44,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:09:44,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:09:44,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-29 01:09:44,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:44,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:09:44,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-29 01:09:44,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:09:44,150 INFO L124 PetriNetUnfolderBase]: 279/583 cut-off events. [2023-11-29 01:09:44,150 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2023-11-29 01:09:44,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1163 conditions, 583 events. 279/583 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3039 event pairs, 102 based on Foata normal form. 16/530 useless extension candidates. Maximal degree in co-relation 1151. Up to 266 conditions per place. [2023-11-29 01:09:44,158 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 27 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2023-11-29 01:09:44,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 174 flow [2023-11-29 01:09:44,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:09:44,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:09:44,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2023-11-29 01:09:44,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2023-11-29 01:09:44,160 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 72 transitions. [2023-11-29 01:09:44,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 72 transitions. [2023-11-29 01:09:44,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:09:44,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 72 transitions. [2023-11-29 01:09:44,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:44,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:44,164 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:44,164 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 86 flow. Second operand 3 states and 72 transitions. [2023-11-29 01:09:44,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 174 flow [2023-11-29 01:09:44,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 166 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 01:09:44,168 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 100 flow [2023-11-29 01:09:44,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2023-11-29 01:09:44,169 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2023-11-29 01:09:44,169 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 100 flow [2023-11-29 01:09:44,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:44,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:09:44,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:09:44,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:09:44,170 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 01:09:44,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:09:44,171 INFO L85 PathProgramCache]: Analyzing trace with hash -201472424, now seen corresponding path program 1 times [2023-11-29 01:09:44,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:09:44,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533897787] [2023-11-29 01:09:44,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:09:44,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:09:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:09:44,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:09:44,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:09:44,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533897787] [2023-11-29 01:09:44,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533897787] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:09:44,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:09:44,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:09:44,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74092880] [2023-11-29 01:09:44,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:09:44,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:09:44,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:09:44,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:09:44,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:09:44,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2023-11-29 01:09:44,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:44,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:09:44,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2023-11-29 01:09:44,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:09:44,496 INFO L124 PetriNetUnfolderBase]: 661/1319 cut-off events. [2023-11-29 01:09:44,496 INFO L125 PetriNetUnfolderBase]: For 411/411 co-relation queries the response was YES. [2023-11-29 01:09:44,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2744 conditions, 1319 events. 661/1319 cut-off events. For 411/411 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8393 event pairs, 376 based on Foata normal form. 64/1222 useless extension candidates. Maximal degree in co-relation 2731. Up to 721 conditions per place. [2023-11-29 01:09:44,506 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 50 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2023-11-29 01:09:44,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 62 transitions, 302 flow [2023-11-29 01:09:44,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:09:44,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:09:44,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2023-11-29 01:09:44,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7265625 [2023-11-29 01:09:44,508 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 93 transitions. [2023-11-29 01:09:44,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 93 transitions. [2023-11-29 01:09:44,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:09:44,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 93 transitions. [2023-11-29 01:09:44,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:44,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:44,511 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:44,511 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 100 flow. Second operand 4 states and 93 transitions. [2023-11-29 01:09:44,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 62 transitions, 302 flow [2023-11-29 01:09:44,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 62 transitions, 294 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:09:44,514 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 120 flow [2023-11-29 01:09:44,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2023-11-29 01:09:44,516 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2023-11-29 01:09:44,516 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 120 flow [2023-11-29 01:09:44,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:44,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:09:44,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:09:44,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 01:09:44,517 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 01:09:44,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:09:44,518 INFO L85 PathProgramCache]: Analyzing trace with hash -205369086, now seen corresponding path program 1 times [2023-11-29 01:09:44,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:09:44,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246482703] [2023-11-29 01:09:44,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:09:44,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:09:44,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:09:44,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:09:44,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:09:44,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246482703] [2023-11-29 01:09:44,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246482703] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:09:44,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:09:44,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:09:44,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248071971] [2023-11-29 01:09:44,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:09:44,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:09:44,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:09:44,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:09:44,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:09:44,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-29 01:09:44,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:44,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:09:44,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-29 01:09:44,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:09:44,710 INFO L124 PetriNetUnfolderBase]: 439/1042 cut-off events. [2023-11-29 01:09:44,711 INFO L125 PetriNetUnfolderBase]: For 448/448 co-relation queries the response was YES. [2023-11-29 01:09:44,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2341 conditions, 1042 events. 439/1042 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6809 event pairs, 151 based on Foata normal form. 0/965 useless extension candidates. Maximal degree in co-relation 2326. Up to 459 conditions per place. [2023-11-29 01:09:44,718 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 37 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2023-11-29 01:09:44,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 53 transitions, 267 flow [2023-11-29 01:09:44,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:09:44,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:09:44,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2023-11-29 01:09:44,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.78125 [2023-11-29 01:09:44,720 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 75 transitions. [2023-11-29 01:09:44,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 75 transitions. [2023-11-29 01:09:44,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:09:44,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 75 transitions. [2023-11-29 01:09:44,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:44,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:44,723 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:44,723 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 120 flow. Second operand 3 states and 75 transitions. [2023-11-29 01:09:44,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 53 transitions, 267 flow [2023-11-29 01:09:44,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 264 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:09:44,727 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 140 flow [2023-11-29 01:09:44,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2023-11-29 01:09:44,728 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 10 predicate places. [2023-11-29 01:09:44,729 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 140 flow [2023-11-29 01:09:44,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:44,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:09:44,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:09:44,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 01:09:44,730 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 01:09:44,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:09:44,730 INFO L85 PathProgramCache]: Analyzing trace with hash -205369085, now seen corresponding path program 1 times [2023-11-29 01:09:44,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:09:44,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251529298] [2023-11-29 01:09:44,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:09:44,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:09:44,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:09:44,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:09:44,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:09:44,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251529298] [2023-11-29 01:09:44,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251529298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:09:44,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:09:44,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:09:44,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139983787] [2023-11-29 01:09:44,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:09:44,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:09:44,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:09:44,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:09:44,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:09:44,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-29 01:09:44,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:44,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:09:44,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-29 01:09:44,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:09:44,897 INFO L124 PetriNetUnfolderBase]: 417/1032 cut-off events. [2023-11-29 01:09:44,897 INFO L125 PetriNetUnfolderBase]: For 603/603 co-relation queries the response was YES. [2023-11-29 01:09:44,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2472 conditions, 1032 events. 417/1032 cut-off events. For 603/603 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6807 event pairs, 117 based on Foata normal form. 24/1015 useless extension candidates. Maximal degree in co-relation 2454. Up to 483 conditions per place. [2023-11-29 01:09:44,906 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 37 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2023-11-29 01:09:44,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 54 transitions, 290 flow [2023-11-29 01:09:44,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:09:44,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:09:44,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2023-11-29 01:09:44,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7708333333333334 [2023-11-29 01:09:44,908 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 74 transitions. [2023-11-29 01:09:44,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 74 transitions. [2023-11-29 01:09:44,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:09:44,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 74 transitions. [2023-11-29 01:09:44,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:44,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:44,910 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:44,910 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 140 flow. Second operand 3 states and 74 transitions. [2023-11-29 01:09:44,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 54 transitions, 290 flow [2023-11-29 01:09:44,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 54 transitions, 282 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 01:09:44,915 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 154 flow [2023-11-29 01:09:44,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2023-11-29 01:09:44,916 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 11 predicate places. [2023-11-29 01:09:44,916 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 154 flow [2023-11-29 01:09:44,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:44,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:09:44,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:09:44,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 01:09:44,917 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 01:09:44,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:09:44,917 INFO L85 PathProgramCache]: Analyzing trace with hash 208813157, now seen corresponding path program 1 times [2023-11-29 01:09:44,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:09:44,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897076620] [2023-11-29 01:09:44,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:09:44,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:09:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:09:44,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:09:44,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:09:44,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897076620] [2023-11-29 01:09:44,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897076620] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:09:44,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:09:44,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:09:44,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286266700] [2023-11-29 01:09:44,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:09:44,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:09:44,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:09:44,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:09:44,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:09:44,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2023-11-29 01:09:44,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 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) [2023-11-29 01:09:44,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:09:44,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2023-11-29 01:09:44,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:09:45,167 INFO L124 PetriNetUnfolderBase]: 661/1351 cut-off events. [2023-11-29 01:09:45,167 INFO L125 PetriNetUnfolderBase]: For 1041/1157 co-relation queries the response was YES. [2023-11-29 01:09:45,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3376 conditions, 1351 events. 661/1351 cut-off events. For 1041/1157 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 8864 event pairs, 292 based on Foata normal form. 87/1388 useless extension candidates. Maximal degree in co-relation 3357. Up to 853 conditions per place. [2023-11-29 01:09:45,178 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 51 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2023-11-29 01:09:45,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 64 transitions, 376 flow [2023-11-29 01:09:45,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:09:45,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:09:45,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2023-11-29 01:09:45,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6953125 [2023-11-29 01:09:45,180 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 89 transitions. [2023-11-29 01:09:45,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 89 transitions. [2023-11-29 01:09:45,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:09:45,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 89 transitions. [2023-11-29 01:09:45,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:45,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:45,182 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:45,182 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 154 flow. Second operand 4 states and 89 transitions. [2023-11-29 01:09:45,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 64 transitions, 376 flow [2023-11-29 01:09:45,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 64 transitions, 368 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:09:45,186 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 174 flow [2023-11-29 01:09:45,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2023-11-29 01:09:45,187 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 15 predicate places. [2023-11-29 01:09:45,187 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 174 flow [2023-11-29 01:09:45,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 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) [2023-11-29 01:09:45,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:09:45,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:09:45,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 01:09:45,188 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 01:09:45,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:09:45,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1172991260, now seen corresponding path program 1 times [2023-11-29 01:09:45,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:09:45,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248209837] [2023-11-29 01:09:45,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:09:45,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:09:45,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:09:45,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:09:45,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:09:45,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248209837] [2023-11-29 01:09:45,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248209837] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:09:45,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:09:45,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:09:45,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781496229] [2023-11-29 01:09:45,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:09:45,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:09:45,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:09:45,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:09:45,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:09:45,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-29 01:09:45,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:45,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:09:45,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-29 01:09:45,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:09:45,456 INFO L124 PetriNetUnfolderBase]: 553/1324 cut-off events. [2023-11-29 01:09:45,457 INFO L125 PetriNetUnfolderBase]: For 1098/1179 co-relation queries the response was YES. [2023-11-29 01:09:45,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3487 conditions, 1324 events. 553/1324 cut-off events. For 1098/1179 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9383 event pairs, 147 based on Foata normal form. 75/1348 useless extension candidates. Maximal degree in co-relation 3466. Up to 422 conditions per place. [2023-11-29 01:09:45,467 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 51 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2023-11-29 01:09:45,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 74 transitions, 435 flow [2023-11-29 01:09:45,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:09:45,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 01:09:45,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2023-11-29 01:09:45,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.74375 [2023-11-29 01:09:45,469 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 119 transitions. [2023-11-29 01:09:45,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 119 transitions. [2023-11-29 01:09:45,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:09:45,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 119 transitions. [2023-11-29 01:09:45,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:45,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:45,471 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:45,471 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 174 flow. Second operand 5 states and 119 transitions. [2023-11-29 01:09:45,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 74 transitions, 435 flow [2023-11-29 01:09:45,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 74 transitions, 430 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:09:45,476 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 258 flow [2023-11-29 01:09:45,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2023-11-29 01:09:45,477 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 21 predicate places. [2023-11-29 01:09:45,477 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 258 flow [2023-11-29 01:09:45,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:45,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:09:45,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:09:45,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 01:09:45,478 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 01:09:45,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:09:45,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1191038841, now seen corresponding path program 1 times [2023-11-29 01:09:45,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:09:45,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938676340] [2023-11-29 01:09:45,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:09:45,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:09:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:09:45,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:09:45,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:09:45,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938676340] [2023-11-29 01:09:45,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938676340] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:09:45,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:09:45,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:09:45,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810116143] [2023-11-29 01:09:45,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:09:45,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:09:45,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:09:45,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:09:45,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:09:45,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-29 01:09:45,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:45,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:09:45,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-29 01:09:45,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:09:45,716 INFO L124 PetriNetUnfolderBase]: 608/1490 cut-off events. [2023-11-29 01:09:45,716 INFO L125 PetriNetUnfolderBase]: For 1762/1878 co-relation queries the response was YES. [2023-11-29 01:09:45,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4073 conditions, 1490 events. 608/1490 cut-off events. For 1762/1878 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 10785 event pairs, 81 based on Foata normal form. 69/1523 useless extension candidates. Maximal degree in co-relation 4048. Up to 509 conditions per place. [2023-11-29 01:09:45,729 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 55 selfloop transitions, 12 changer transitions 0/81 dead transitions. [2023-11-29 01:09:45,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 81 transitions, 545 flow [2023-11-29 01:09:45,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:09:45,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 01:09:45,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2023-11-29 01:09:45,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.725 [2023-11-29 01:09:45,731 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 116 transitions. [2023-11-29 01:09:45,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 116 transitions. [2023-11-29 01:09:45,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:09:45,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 116 transitions. [2023-11-29 01:09:45,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:45,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:45,733 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:45,733 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 258 flow. Second operand 5 states and 116 transitions. [2023-11-29 01:09:45,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 81 transitions, 545 flow [2023-11-29 01:09:45,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 81 transitions, 543 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-29 01:09:45,741 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 328 flow [2023-11-29 01:09:45,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=328, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2023-11-29 01:09:45,742 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 27 predicate places. [2023-11-29 01:09:45,742 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 328 flow [2023-11-29 01:09:45,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:45,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:09:45,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:09:45,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 01:09:45,743 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 01:09:45,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:09:45,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1865249180, now seen corresponding path program 1 times [2023-11-29 01:09:45,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:09:45,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564942505] [2023-11-29 01:09:45,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:09:45,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:09:45,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:09:45,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:09:45,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:09:45,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564942505] [2023-11-29 01:09:45,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564942505] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:09:45,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:09:45,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:09:45,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627388529] [2023-11-29 01:09:45,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:09:45,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:09:45,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:09:45,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:09:45,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:09:45,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-29 01:09:45,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 328 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:45,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:09:45,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-29 01:09:45,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:09:45,954 INFO L124 PetriNetUnfolderBase]: 503/1205 cut-off events. [2023-11-29 01:09:45,954 INFO L125 PetriNetUnfolderBase]: For 2149/2256 co-relation queries the response was YES. [2023-11-29 01:09:45,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3404 conditions, 1205 events. 503/1205 cut-off events. For 2149/2256 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 8108 event pairs, 378 based on Foata normal form. 84/1229 useless extension candidates. Maximal degree in co-relation 3375. Up to 846 conditions per place. [2023-11-29 01:09:45,964 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 30 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2023-11-29 01:09:45,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 45 transitions, 319 flow [2023-11-29 01:09:45,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:09:45,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:09:45,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2023-11-29 01:09:45,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2023-11-29 01:09:45,965 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 60 transitions. [2023-11-29 01:09:45,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 60 transitions. [2023-11-29 01:09:45,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:09:45,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 60 transitions. [2023-11-29 01:09:45,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:45,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:45,967 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:45,967 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 328 flow. Second operand 3 states and 60 transitions. [2023-11-29 01:09:45,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 45 transitions, 319 flow [2023-11-29 01:09:45,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 45 transitions, 304 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-29 01:09:45,972 INFO L231 Difference]: Finished difference. Result has 58 places, 45 transitions, 244 flow [2023-11-29 01:09:45,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=58, PETRI_TRANSITIONS=45} [2023-11-29 01:09:45,973 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 23 predicate places. [2023-11-29 01:09:45,973 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 45 transitions, 244 flow [2023-11-29 01:09:45,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:45,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:09:45,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:09:45,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 01:09:45,974 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 01:09:45,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:09:45,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1191045681, now seen corresponding path program 1 times [2023-11-29 01:09:45,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:09:45,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655170422] [2023-11-29 01:09:45,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:09:45,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:09:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:09:46,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:09:46,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:09:46,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655170422] [2023-11-29 01:09:46,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655170422] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:09:46,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:09:46,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:09:46,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615129360] [2023-11-29 01:09:46,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:09:46,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:09:46,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:09:46,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:09:46,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:09:46,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-29 01:09:46,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 45 transitions, 244 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:46,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:09:46,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-29 01:09:46,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:09:46,227 INFO L124 PetriNetUnfolderBase]: 558/1374 cut-off events. [2023-11-29 01:09:46,227 INFO L125 PetriNetUnfolderBase]: For 1496/1607 co-relation queries the response was YES. [2023-11-29 01:09:46,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3670 conditions, 1374 events. 558/1374 cut-off events. For 1496/1607 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9446 event pairs, 119 based on Foata normal form. 66/1395 useless extension candidates. Maximal degree in co-relation 3646. Up to 674 conditions per place. [2023-11-29 01:09:46,242 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 50 selfloop transitions, 5 changer transitions 0/69 dead transitions. [2023-11-29 01:09:46,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 69 transitions, 444 flow [2023-11-29 01:09:46,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:09:46,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 01:09:46,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2023-11-29 01:09:46,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.69375 [2023-11-29 01:09:46,243 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 111 transitions. [2023-11-29 01:09:46,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 111 transitions. [2023-11-29 01:09:46,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:09:46,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 111 transitions. [2023-11-29 01:09:46,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:46,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:46,245 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:46,245 INFO L175 Difference]: Start difference. First operand has 58 places, 45 transitions, 244 flow. Second operand 5 states and 111 transitions. [2023-11-29 01:09:46,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 69 transitions, 444 flow [2023-11-29 01:09:46,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 69 transitions, 443 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:09:46,250 INFO L231 Difference]: Finished difference. Result has 63 places, 46 transitions, 269 flow [2023-11-29 01:09:46,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=269, PETRI_PLACES=63, PETRI_TRANSITIONS=46} [2023-11-29 01:09:46,251 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 28 predicate places. [2023-11-29 01:09:46,252 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 46 transitions, 269 flow [2023-11-29 01:09:46,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:46,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:09:46,252 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 01:09:46,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 01:09:46,252 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 01:09:46,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:09:46,253 INFO L85 PathProgramCache]: Analyzing trace with hash -2045990776, now seen corresponding path program 1 times [2023-11-29 01:09:46,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:09:46,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019181279] [2023-11-29 01:09:46,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:09:46,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:09:46,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:09:46,319 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:09:46,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:09:46,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019181279] [2023-11-29 01:09:46,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019181279] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:09:46,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38059455] [2023-11-29 01:09:46,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:09:46,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:09:46,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:09:46,324 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:09:46,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:09:46,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:09:46,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:09:46,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:09:46,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:09:46,460 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:09:46,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38059455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:09:46,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:09:46,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-29 01:09:46,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732212795] [2023-11-29 01:09:46,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:09:46,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:09:46,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:09:46,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:09:46,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:09:46,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2023-11-29 01:09:46,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 46 transitions, 269 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:46,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:09:46,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2023-11-29 01:09:46,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:09:46,777 INFO L124 PetriNetUnfolderBase]: 851/1803 cut-off events. [2023-11-29 01:09:46,777 INFO L125 PetriNetUnfolderBase]: For 2364/2520 co-relation queries the response was YES. [2023-11-29 01:09:46,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5077 conditions, 1803 events. 851/1803 cut-off events. For 2364/2520 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 12205 event pairs, 69 based on Foata normal form. 121/1846 useless extension candidates. Maximal degree in co-relation 5050. Up to 572 conditions per place. [2023-11-29 01:09:46,794 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 80 selfloop transitions, 6 changer transitions 0/96 dead transitions. [2023-11-29 01:09:46,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 96 transitions, 700 flow [2023-11-29 01:09:46,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:09:46,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 01:09:46,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2023-11-29 01:09:46,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2023-11-29 01:09:46,796 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 124 transitions. [2023-11-29 01:09:46,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 124 transitions. [2023-11-29 01:09:46,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:09:46,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 124 transitions. [2023-11-29 01:09:46,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:46,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 32.0) internal successors, (224), 7 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:46,798 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 32.0) internal successors, (224), 7 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:46,798 INFO L175 Difference]: Start difference. First operand has 63 places, 46 transitions, 269 flow. Second operand 6 states and 124 transitions. [2023-11-29 01:09:46,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 96 transitions, 700 flow [2023-11-29 01:09:46,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 96 transitions, 678 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-29 01:09:46,804 INFO L231 Difference]: Finished difference. Result has 65 places, 45 transitions, 267 flow [2023-11-29 01:09:46,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=267, PETRI_PLACES=65, PETRI_TRANSITIONS=45} [2023-11-29 01:09:46,804 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 30 predicate places. [2023-11-29 01:09:46,805 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 45 transitions, 267 flow [2023-11-29 01:09:46,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:46,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:09:46,805 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-29 01:09:46,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:09:47,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 01:09:47,006 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 01:09:47,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:09:47,006 INFO L85 PathProgramCache]: Analyzing trace with hash 998795634, now seen corresponding path program 1 times [2023-11-29 01:09:47,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:09:47,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32814713] [2023-11-29 01:09:47,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:09:47,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:09:47,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:09:47,056 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:09:47,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:09:47,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32814713] [2023-11-29 01:09:47,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32814713] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:09:47,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:09:47,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:09:47,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907698206] [2023-11-29 01:09:47,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:09:47,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:09:47,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:09:47,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:09:47,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:09:47,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2023-11-29 01:09:47,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 45 transitions, 267 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:47,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:09:47,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2023-11-29 01:09:47,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:09:47,332 INFO L124 PetriNetUnfolderBase]: 883/1815 cut-off events. [2023-11-29 01:09:47,332 INFO L125 PetriNetUnfolderBase]: For 2603/2696 co-relation queries the response was YES. [2023-11-29 01:09:47,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5398 conditions, 1815 events. 883/1815 cut-off events. For 2603/2696 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 12013 event pairs, 175 based on Foata normal form. 113/1897 useless extension candidates. Maximal degree in co-relation 5372. Up to 726 conditions per place. [2023-11-29 01:09:47,353 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 57 selfloop transitions, 6 changer transitions 0/72 dead transitions. [2023-11-29 01:09:47,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 72 transitions, 534 flow [2023-11-29 01:09:47,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:09:47,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:09:47,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2023-11-29 01:09:47,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.609375 [2023-11-29 01:09:47,354 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 78 transitions. [2023-11-29 01:09:47,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 78 transitions. [2023-11-29 01:09:47,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:09:47,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 78 transitions. [2023-11-29 01:09:47,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:47,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:47,356 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:47,356 INFO L175 Difference]: Start difference. First operand has 65 places, 45 transitions, 267 flow. Second operand 4 states and 78 transitions. [2023-11-29 01:09:47,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 72 transitions, 534 flow [2023-11-29 01:09:47,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 72 transitions, 518 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-29 01:09:47,364 INFO L231 Difference]: Finished difference. Result has 63 places, 45 transitions, 267 flow [2023-11-29 01:09:47,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=267, PETRI_PLACES=63, PETRI_TRANSITIONS=45} [2023-11-29 01:09:47,365 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 28 predicate places. [2023-11-29 01:09:47,365 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 45 transitions, 267 flow [2023-11-29 01:09:47,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:47,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:09:47,365 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:09:47,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 01:09:47,366 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 01:09:47,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:09:47,366 INFO L85 PathProgramCache]: Analyzing trace with hash 146874342, now seen corresponding path program 1 times [2023-11-29 01:09:47,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:09:47,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002155251] [2023-11-29 01:09:47,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:09:47,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:09:47,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:09:47,436 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:09:47,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:09:47,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002155251] [2023-11-29 01:09:47,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002155251] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:09:47,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896646426] [2023-11-29 01:09:47,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:09:47,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:09:47,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:09:47,438 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:09:47,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:09:47,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:09:47,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:09:47,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:09:47,570 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:09:47,570 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:09:47,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896646426] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:09:47,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:09:47,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-29 01:09:47,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118384937] [2023-11-29 01:09:47,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:09:47,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:09:47,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:09:47,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:09:47,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:09:47,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2023-11-29 01:09:47,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 45 transitions, 267 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:47,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:09:47,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2023-11-29 01:09:47,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:09:47,854 INFO L124 PetriNetUnfolderBase]: 1026/1892 cut-off events. [2023-11-29 01:09:47,855 INFO L125 PetriNetUnfolderBase]: For 3395/3395 co-relation queries the response was YES. [2023-11-29 01:09:47,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5751 conditions, 1892 events. 1026/1892 cut-off events. For 3395/3395 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 11856 event pairs, 153 based on Foata normal form. 69/1875 useless extension candidates. Maximal degree in co-relation 5727. Up to 765 conditions per place. [2023-11-29 01:09:47,873 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 52 selfloop transitions, 6 changer transitions 1/67 dead transitions. [2023-11-29 01:09:47,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 67 transitions, 524 flow [2023-11-29 01:09:47,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:09:47,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:09:47,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2023-11-29 01:09:47,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.578125 [2023-11-29 01:09:47,875 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 74 transitions. [2023-11-29 01:09:47,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 74 transitions. [2023-11-29 01:09:47,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:09:47,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 74 transitions. [2023-11-29 01:09:47,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:47,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:47,876 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:47,876 INFO L175 Difference]: Start difference. First operand has 63 places, 45 transitions, 267 flow. Second operand 4 states and 74 transitions. [2023-11-29 01:09:47,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 67 transitions, 524 flow [2023-11-29 01:09:47,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 67 transitions, 510 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 01:09:47,884 INFO L231 Difference]: Finished difference. Result has 63 places, 44 transitions, 267 flow [2023-11-29 01:09:47,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=267, PETRI_PLACES=63, PETRI_TRANSITIONS=44} [2023-11-29 01:09:47,884 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 28 predicate places. [2023-11-29 01:09:47,885 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 44 transitions, 267 flow [2023-11-29 01:09:47,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:47,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:09:47,885 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:09:47,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:09:48,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 01:09:48,086 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 01:09:48,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:09:48,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1612175747, now seen corresponding path program 1 times [2023-11-29 01:09:48,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:09:48,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675317314] [2023-11-29 01:09:48,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:09:48,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:09:48,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:09:48,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:09:48,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:09:48,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675317314] [2023-11-29 01:09:48,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675317314] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:09:48,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713083766] [2023-11-29 01:09:48,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:09:48,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:09:48,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:09:48,144 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:09:48,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:09:48,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:09:48,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:09:48,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:09:48,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:09:48,256 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:09:48,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:09:48,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713083766] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:09:48,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:09:48,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-29 01:09:48,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624653286] [2023-11-29 01:09:48,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:09:48,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:09:48,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:09:48,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:09:48,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:09:48,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-29 01:09:48,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 44 transitions, 267 flow. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:48,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:09:48,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-29 01:09:48,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:09:48,612 INFO L124 PetriNetUnfolderBase]: 747/1709 cut-off events. [2023-11-29 01:09:48,612 INFO L125 PetriNetUnfolderBase]: For 3499/3544 co-relation queries the response was YES. [2023-11-29 01:09:48,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5093 conditions, 1709 events. 747/1709 cut-off events. For 3499/3544 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 10738 event pairs, 71 based on Foata normal form. 132/1816 useless extension candidates. Maximal degree in co-relation 5068. Up to 289 conditions per place. [2023-11-29 01:09:48,623 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 61 selfloop transitions, 12 changer transitions 4/89 dead transitions. [2023-11-29 01:09:48,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 89 transitions, 643 flow [2023-11-29 01:09:48,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:09:48,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 01:09:48,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2023-11-29 01:09:48,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2023-11-29 01:09:48,625 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 160 transitions. [2023-11-29 01:09:48,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 160 transitions. [2023-11-29 01:09:48,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:09:48,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 160 transitions. [2023-11-29 01:09:48,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:48,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:48,627 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:48,627 INFO L175 Difference]: Start difference. First operand has 63 places, 44 transitions, 267 flow. Second operand 7 states and 160 transitions. [2023-11-29 01:09:48,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 89 transitions, 643 flow [2023-11-29 01:09:48,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 89 transitions, 611 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-29 01:09:48,633 INFO L231 Difference]: Finished difference. Result has 71 places, 50 transitions, 371 flow [2023-11-29 01:09:48,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=371, PETRI_PLACES=71, PETRI_TRANSITIONS=50} [2023-11-29 01:09:48,634 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 36 predicate places. [2023-11-29 01:09:48,634 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 50 transitions, 371 flow [2023-11-29 01:09:48,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:48,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:09:48,635 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:09:48,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 01:09:48,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 01:09:48,839 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 01:09:48,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:09:48,839 INFO L85 PathProgramCache]: Analyzing trace with hash 258137567, now seen corresponding path program 1 times [2023-11-29 01:09:48,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:09:48,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358757958] [2023-11-29 01:09:48,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:09:48,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:09:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:09:48,890 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:09:48,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:09:48,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358757958] [2023-11-29 01:09:48,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358757958] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:09:48,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:09:48,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:09:48,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598775832] [2023-11-29 01:09:48,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:09:48,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:09:48,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:09:48,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:09:48,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:09:48,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2023-11-29 01:09:48,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 50 transitions, 371 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:48,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:09:48,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2023-11-29 01:09:48,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:09:49,198 INFO L124 PetriNetUnfolderBase]: 1190/2257 cut-off events. [2023-11-29 01:09:49,198 INFO L125 PetriNetUnfolderBase]: For 5438/5438 co-relation queries the response was YES. [2023-11-29 01:09:49,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7285 conditions, 2257 events. 1190/2257 cut-off events. For 5438/5438 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 13425 event pairs, 275 based on Foata normal form. 0/2223 useless extension candidates. Maximal degree in co-relation 7254. Up to 893 conditions per place. [2023-11-29 01:09:49,212 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 63 selfloop transitions, 6 changer transitions 0/77 dead transitions. [2023-11-29 01:09:49,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 77 transitions, 732 flow [2023-11-29 01:09:49,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:09:49,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:09:49,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2023-11-29 01:09:49,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.578125 [2023-11-29 01:09:49,214 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 74 transitions. [2023-11-29 01:09:49,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 74 transitions. [2023-11-29 01:09:49,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:09:49,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 74 transitions. [2023-11-29 01:09:49,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:49,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:49,215 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:49,215 INFO L175 Difference]: Start difference. First operand has 71 places, 50 transitions, 371 flow. Second operand 4 states and 74 transitions. [2023-11-29 01:09:49,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 77 transitions, 732 flow [2023-11-29 01:09:49,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 77 transitions, 701 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-11-29 01:09:49,225 INFO L231 Difference]: Finished difference. Result has 72 places, 50 transitions, 368 flow [2023-11-29 01:09:49,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=368, PETRI_PLACES=72, PETRI_TRANSITIONS=50} [2023-11-29 01:09:49,226 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 37 predicate places. [2023-11-29 01:09:49,226 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 50 transitions, 368 flow [2023-11-29 01:09:49,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:49,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:09:49,226 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:09:49,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 01:09:49,227 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 01:09:49,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:09:49,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1371124197, now seen corresponding path program 1 times [2023-11-29 01:09:49,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:09:49,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019851217] [2023-11-29 01:09:49,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:09:49,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:09:49,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:09:49,302 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:09:49,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:09:49,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019851217] [2023-11-29 01:09:49,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019851217] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:09:49,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563142094] [2023-11-29 01:09:49,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:09:49,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:09:49,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:09:49,306 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:09:49,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:09:49,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:09:49,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:09:49,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:09:49,435 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:09:49,435 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:09:49,510 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:09:49,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563142094] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:09:49,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:09:49,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-29 01:09:49,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962104502] [2023-11-29 01:09:49,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:09:49,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:09:49,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:09:49,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:09:49,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:09:49,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-29 01:09:49,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 50 transitions, 368 flow. Second operand has 12 states, 12 states have (on average 16.333333333333332) internal successors, (196), 12 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:49,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:09:49,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-29 01:09:49,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:09:50,018 INFO L124 PetriNetUnfolderBase]: 972/2188 cut-off events. [2023-11-29 01:09:50,018 INFO L125 PetriNetUnfolderBase]: For 7406/7424 co-relation queries the response was YES. [2023-11-29 01:09:50,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7022 conditions, 2188 events. 972/2188 cut-off events. For 7406/7424 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 12998 event pairs, 35 based on Foata normal form. 120/2299 useless extension candidates. Maximal degree in co-relation 6991. Up to 262 conditions per place. [2023-11-29 01:09:50,032 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 78 selfloop transitions, 17 changer transitions 17/124 dead transitions. [2023-11-29 01:09:50,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 124 transitions, 947 flow [2023-11-29 01:09:50,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:09:50,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 01:09:50,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 270 transitions. [2023-11-29 01:09:50,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.703125 [2023-11-29 01:09:50,035 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 270 transitions. [2023-11-29 01:09:50,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 270 transitions. [2023-11-29 01:09:50,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:09:50,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 270 transitions. [2023-11-29 01:09:50,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 22.5) internal successors, (270), 12 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:50,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 32.0) internal successors, (416), 13 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:50,038 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 32.0) internal successors, (416), 13 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:50,038 INFO L175 Difference]: Start difference. First operand has 72 places, 50 transitions, 368 flow. Second operand 12 states and 270 transitions. [2023-11-29 01:09:50,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 124 transitions, 947 flow [2023-11-29 01:09:50,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 124 transitions, 910 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-11-29 01:09:50,049 INFO L231 Difference]: Finished difference. Result has 87 places, 52 transitions, 427 flow [2023-11-29 01:09:50,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=427, PETRI_PLACES=87, PETRI_TRANSITIONS=52} [2023-11-29 01:09:50,050 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 52 predicate places. [2023-11-29 01:09:50,050 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 52 transitions, 427 flow [2023-11-29 01:09:50,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.333333333333332) internal successors, (196), 12 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:50,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:09:50,050 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:09:50,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 01:09:50,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 01:09:50,252 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 01:09:50,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:09:50,252 INFO L85 PathProgramCache]: Analyzing trace with hash 19604967, now seen corresponding path program 1 times [2023-11-29 01:09:50,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:09:50,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227000018] [2023-11-29 01:09:50,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:09:50,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:09:50,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:09:50,370 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:09:50,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:09:50,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227000018] [2023-11-29 01:09:50,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227000018] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:09:50,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566772123] [2023-11-29 01:09:50,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:09:50,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:09:50,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:09:50,372 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:09:50,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:09:50,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:09:50,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:09:50,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:09:50,518 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:09:50,518 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:09:50,634 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:09:50,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566772123] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:09:50,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:09:50,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-11-29 01:09:50,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393465097] [2023-11-29 01:09:50,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:09:50,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 01:09:50,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:09:50,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 01:09:50,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:09:50,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-29 01:09:50,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 52 transitions, 427 flow. Second operand has 16 states, 16 states have (on average 16.25) internal successors, (260), 16 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:50,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:09:50,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-29 01:09:50,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:09:51,384 INFO L124 PetriNetUnfolderBase]: 1422/3158 cut-off events. [2023-11-29 01:09:51,384 INFO L125 PetriNetUnfolderBase]: For 11400/11418 co-relation queries the response was YES. [2023-11-29 01:09:51,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10129 conditions, 3158 events. 1422/3158 cut-off events. For 11400/11418 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 18950 event pairs, 71 based on Foata normal form. 108/3247 useless extension candidates. Maximal degree in co-relation 10090. Up to 406 conditions per place. [2023-11-29 01:09:51,410 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 92 selfloop transitions, 24 changer transitions 25/153 dead transitions. [2023-11-29 01:09:51,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 153 transitions, 1220 flow [2023-11-29 01:09:51,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:09:51,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 01:09:51,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 336 transitions. [2023-11-29 01:09:51,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7 [2023-11-29 01:09:51,413 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 336 transitions. [2023-11-29 01:09:51,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 336 transitions. [2023-11-29 01:09:51,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:09:51,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 336 transitions. [2023-11-29 01:09:51,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 22.4) internal successors, (336), 15 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:51,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 32.0) internal successors, (512), 16 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:51,417 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 32.0) internal successors, (512), 16 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:51,417 INFO L175 Difference]: Start difference. First operand has 87 places, 52 transitions, 427 flow. Second operand 15 states and 336 transitions. [2023-11-29 01:09:51,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 153 transitions, 1220 flow [2023-11-29 01:09:51,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 153 transitions, 1207 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-29 01:09:51,437 INFO L231 Difference]: Finished difference. Result has 105 places, 60 transitions, 578 flow [2023-11-29 01:09:51,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=578, PETRI_PLACES=105, PETRI_TRANSITIONS=60} [2023-11-29 01:09:51,437 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 70 predicate places. [2023-11-29 01:09:51,437 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 60 transitions, 578 flow [2023-11-29 01:09:51,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 16.25) internal successors, (260), 16 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:51,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:09:51,438 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:09:51,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 01:09:51,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 01:09:51,639 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 01:09:51,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:09:51,639 INFO L85 PathProgramCache]: Analyzing trace with hash 117045895, now seen corresponding path program 2 times [2023-11-29 01:09:51,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:09:51,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876228257] [2023-11-29 01:09:51,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:09:51,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:09:51,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:09:51,906 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:09:51,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:09:51,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876228257] [2023-11-29 01:09:51,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876228257] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:09:51,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989486422] [2023-11-29 01:09:51,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:09:51,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:09:51,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:09:51,908 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:09:51,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:09:52,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:09:52,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:09:52,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 01:09:52,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:09:52,105 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:09:52,105 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:09:52,365 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:09:52,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989486422] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:09:52,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:09:52,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2023-11-29 01:09:52,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461923308] [2023-11-29 01:09:52,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:09:52,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 01:09:52,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:09:52,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 01:09:52,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2023-11-29 01:09:52,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 32 [2023-11-29 01:09:52,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 60 transitions, 578 flow. Second operand has 28 states, 28 states have (on average 16.142857142857142) internal successors, (452), 28 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:52,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:09:52,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 32 [2023-11-29 01:09:52,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:09:53,880 INFO L124 PetriNetUnfolderBase]: 2412/5356 cut-off events. [2023-11-29 01:09:53,880 INFO L125 PetriNetUnfolderBase]: For 28138/28156 co-relation queries the response was YES. [2023-11-29 01:09:53,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17417 conditions, 5356 events. 2412/5356 cut-off events. For 28138/28156 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 31875 event pairs, 35 based on Foata normal form. 216/5563 useless extension candidates. Maximal degree in co-relation 17370. Up to 694 conditions per place. [2023-11-29 01:09:53,916 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 158 selfloop transitions, 41 changer transitions 49/260 dead transitions. [2023-11-29 01:09:53,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 260 transitions, 2118 flow [2023-11-29 01:09:53,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 01:09:53,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-29 01:09:53,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 627 transitions. [2023-11-29 01:09:53,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6997767857142857 [2023-11-29 01:09:53,920 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 627 transitions. [2023-11-29 01:09:53,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 627 transitions. [2023-11-29 01:09:53,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:09:53,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 627 transitions. [2023-11-29 01:09:53,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 22.392857142857142) internal successors, (627), 28 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:53,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 32.0) internal successors, (928), 29 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:53,926 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 32.0) internal successors, (928), 29 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:53,926 INFO L175 Difference]: Start difference. First operand has 105 places, 60 transitions, 578 flow. Second operand 28 states and 627 transitions. [2023-11-29 01:09:53,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 260 transitions, 2118 flow [2023-11-29 01:09:53,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 260 transitions, 2038 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-29 01:09:53,956 INFO L231 Difference]: Finished difference. Result has 139 places, 76 transitions, 840 flow [2023-11-29 01:09:53,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=840, PETRI_PLACES=139, PETRI_TRANSITIONS=76} [2023-11-29 01:09:53,957 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 104 predicate places. [2023-11-29 01:09:53,957 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 76 transitions, 840 flow [2023-11-29 01:09:53,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 16.142857142857142) internal successors, (452), 28 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:53,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:09:53,958 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:09:53,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 01:09:54,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 01:09:54,158 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 01:09:54,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:09:54,159 INFO L85 PathProgramCache]: Analyzing trace with hash -940623473, now seen corresponding path program 2 times [2023-11-29 01:09:54,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:09:54,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904770310] [2023-11-29 01:09:54,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:09:54,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:09:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:09:54,817 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:09:54,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:09:54,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904770310] [2023-11-29 01:09:54,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904770310] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:09:54,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772597624] [2023-11-29 01:09:54,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:09:54,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:09:54,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:09:54,819 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:09:54,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:09:54,939 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:09:54,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:09:54,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 01:09:54,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:09:55,382 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 538 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 01:09:55,382 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:09:55,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772597624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:09:55,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:09:55,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 46 [2023-11-29 01:09:55,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838922774] [2023-11-29 01:09:55,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:09:55,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 01:09:55,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:09:55,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 01:09:55,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=1760, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 01:09:55,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2023-11-29 01:09:55,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 76 transitions, 840 flow. Second operand has 23 states, 23 states have (on average 13.130434782608695) internal successors, (302), 23 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:09:55,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:09:55,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2023-11-29 01:09:55,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:10:00,074 INFO L124 PetriNetUnfolderBase]: 15078/26727 cut-off events. [2023-11-29 01:10:00,074 INFO L125 PetriNetUnfolderBase]: For 69209/69497 co-relation queries the response was YES. [2023-11-29 01:10:00,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88589 conditions, 26727 events. 15078/26727 cut-off events. For 69209/69497 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 203749 event pairs, 265 based on Foata normal form. 656/27373 useless extension candidates. Maximal degree in co-relation 88539. Up to 3015 conditions per place. [2023-11-29 01:10:00,298 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 0 selfloop transitions, 0 changer transitions 591/591 dead transitions. [2023-11-29 01:10:00,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 591 transitions, 6844 flow [2023-11-29 01:10:00,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 01:10:00,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-29 01:10:00,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 460 transitions. [2023-11-29 01:10:00,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2023-11-29 01:10:00,301 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 460 transitions. [2023-11-29 01:10:00,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 460 transitions. [2023-11-29 01:10:00,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:10:00,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 460 transitions. [2023-11-29 01:10:00,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 20.0) internal successors, (460), 23 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:10:00,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 32.0) internal successors, (768), 24 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:10:00,305 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 32.0) internal successors, (768), 24 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:10:00,305 INFO L175 Difference]: Start difference. First operand has 139 places, 76 transitions, 840 flow. Second operand 23 states and 460 transitions. [2023-11-29 01:10:00,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 591 transitions, 6844 flow [2023-11-29 01:10:00,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 591 transitions, 5013 flow, removed 22 selfloop flow, removed 48 redundant places. [2023-11-29 01:10:00,564 INFO L231 Difference]: Finished difference. Result has 108 places, 0 transitions, 0 flow [2023-11-29 01:10:00,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=0, PETRI_PLACES=108, PETRI_TRANSITIONS=0} [2023-11-29 01:10:00,565 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 73 predicate places. [2023-11-29 01:10:00,565 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 0 transitions, 0 flow [2023-11-29 01:10:00,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 13.130434782608695) internal successors, (302), 23 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:10:00,567 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2023-11-29 01:10:00,568 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2023-11-29 01:10:00,568 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-11-29 01:10:00,568 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-11-29 01:10:00,568 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-11-29 01:10:00,569 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-11-29 01:10:00,569 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-11-29 01:10:00,569 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-11-29 01:10:00,569 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-11-29 01:10:00,569 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2023-11-29 01:10:00,570 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-11-29 01:10:00,570 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-11-29 01:10:00,570 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-11-29 01:10:00,570 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-11-29 01:10:00,571 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-11-29 01:10:00,571 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-11-29 01:10:00,571 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-11-29 01:10:00,571 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-11-29 01:10:00,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 01:10:00,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:10:00,772 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:10:00,777 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 01:10:00,777 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 01:10:00,781 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 01:10:00 BasicIcfg [2023-11-29 01:10:00,781 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 01:10:00,782 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 01:10:00,782 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 01:10:00,782 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 01:10:00,783 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:09:43" (3/4) ... [2023-11-29 01:10:00,784 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 01:10:00,786 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2023-11-29 01:10:00,787 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2023-11-29 01:10:00,791 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 38 nodes and edges [2023-11-29 01:10:00,791 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-11-29 01:10:00,791 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-29 01:10:00,791 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-29 01:10:00,872 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 01:10:00,875 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 01:10:00,876 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 01:10:00,876 INFO L158 Benchmark]: Toolchain (without parser) took 18585.51ms. Allocated memory was 153.1MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 107.2MB in the beginning and 1.0GB in the end (delta: -920.7MB). Peak memory consumption was 362.2MB. Max. memory is 16.1GB. [2023-11-29 01:10:00,877 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 100.7MB. Free memory is still 53.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 01:10:00,877 INFO L158 Benchmark]: CACSL2BoogieTranslator took 446.22ms. Allocated memory is still 153.1MB. Free memory was 107.2MB in the beginning and 87.7MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-29 01:10:00,878 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.72ms. Allocated memory is still 153.1MB. Free memory was 87.7MB in the beginning and 85.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 01:10:00,878 INFO L158 Benchmark]: Boogie Preprocessor took 46.47ms. Allocated memory is still 153.1MB. Free memory was 85.8MB in the beginning and 83.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 01:10:00,878 INFO L158 Benchmark]: RCFGBuilder took 480.33ms. Allocated memory is still 153.1MB. Free memory was 83.7MB in the beginning and 120.6MB in the end (delta: -37.0MB). Peak memory consumption was 29.3MB. Max. memory is 16.1GB. [2023-11-29 01:10:00,879 INFO L158 Benchmark]: TraceAbstraction took 17466.00ms. Allocated memory was 153.1MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 119.9MB in the beginning and 1.0GB in the end (delta: -912.2MB). Peak memory consumption was 553.1MB. Max. memory is 16.1GB. [2023-11-29 01:10:00,879 INFO L158 Benchmark]: Witness Printer took 94.23ms. Allocated memory is still 1.4GB. Free memory was 1.0GB in the beginning and 1.0GB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 01:10:00,882 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 100.7MB. Free memory is still 53.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 446.22ms. Allocated memory is still 153.1MB. Free memory was 107.2MB in the beginning and 87.7MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.72ms. Allocated memory is still 153.1MB. Free memory was 87.7MB in the beginning and 85.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.47ms. Allocated memory is still 153.1MB. Free memory was 85.8MB in the beginning and 83.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 480.33ms. Allocated memory is still 153.1MB. Free memory was 83.7MB in the beginning and 120.6MB in the end (delta: -37.0MB). Peak memory consumption was 29.3MB. Max. memory is 16.1GB. * TraceAbstraction took 17466.00ms. Allocated memory was 153.1MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 119.9MB in the beginning and 1.0GB in the end (delta: -912.2MB). Peak memory consumption was 553.1MB. Max. memory is 16.1GB. * Witness Printer took 94.23ms. Allocated memory is still 1.4GB. Free memory was 1.0GB in the beginning and 1.0GB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 55 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 17.4s, OverallIterations: 19, TraceHistogramMax: 12, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 11.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1896 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1822 mSDsluCounter, 171 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 133 mSDsCounter, 54 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3078 IncrementalHoareTripleChecker+Invalid, 3132 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 54 mSolverCounterUnsat, 38 mSDtfsCounter, 3078 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 569 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1481 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=840occurred in iteration=18, InterpolantAutomatonStates: 141, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 670 NumberOfCodeBlocks, 670 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 780 ConstructedInterpolants, 0 QuantifiedInterpolants, 2240 SizeOfPredicates, 37 NumberOfNonLiveVariables, 1178 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 30 InterpolantComputations, 15 PerfectInterpolantSequences, 560/1680 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 01:10:00,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f62789-e52b-4af1-ba0f-bcfac3d4deee/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE