./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c580d85-bca3-4636-ad89-a73926b4047f/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c580d85-bca3-4636-ad89-a73926b4047f/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c580d85-bca3-4636-ad89-a73926b4047f/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c580d85-bca3-4636-ad89-a73926b4047f/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c580d85-bca3-4636-ad89-a73926b4047f/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c580d85-bca3-4636-ad89-a73926b4047f/bin/uautomizer-verify-jihMAELWvX --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 8d3b4a56bf20a7e5cb147a14169234a27b247cfdef3db9f4b8a4f4a17cd6fe47 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 19:13:29,705 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 19:13:29,793 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c580d85-bca3-4636-ad89-a73926b4047f/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-08 19:13:29,799 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 19:13:29,800 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 19:13:29,828 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 19:13:29,829 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 19:13:29,829 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 19:13:29,830 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 19:13:29,830 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 19:13:29,831 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 19:13:29,832 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 19:13:29,832 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 19:13:29,833 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 19:13:29,834 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 19:13:29,834 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 19:13:29,835 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 19:13:29,835 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 19:13:29,836 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 19:13:29,836 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 19:13:29,837 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 19:13:29,837 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 19:13:29,838 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 19:13:29,838 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 19:13:29,839 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 19:13:29,843 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 19:13:29,844 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 19:13:29,844 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 19:13:29,845 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 19:13:29,845 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 19:13:29,845 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 19:13:29,846 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 19:13:29,846 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 19:13:29,846 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 19:13:29,847 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:13:29,847 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 19:13:29,848 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 19:13:29,848 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 19:13:29,848 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 19:13:29,849 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 19:13:29,849 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 19:13:29,850 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 19:13:29,850 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 19:13:29,850 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 19:13:29,851 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_2c580d85-bca3-4636-ad89-a73926b4047f/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c580d85-bca3-4636-ad89-a73926b4047f/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d3b4a56bf20a7e5cb147a14169234a27b247cfdef3db9f4b8a4f4a17cd6fe47 [2024-11-08 19:13:30,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 19:13:30,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 19:13:30,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 19:13:30,308 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 19:13:30,309 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 19:13:30,311 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c580d85-bca3-4636-ad89-a73926b4047f/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c Unable to find full path for "g++" [2024-11-08 19:13:33,092 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 19:13:33,325 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 19:13:33,326 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c580d85-bca3-4636-ad89-a73926b4047f/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c [2024-11-08 19:13:33,337 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c580d85-bca3-4636-ad89-a73926b4047f/bin/uautomizer-verify-jihMAELWvX/data/24071e2c7/e99a89c5421d4183b76b91f34b4c44ee/FLAGa08be6271 [2024-11-08 19:13:33,357 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c580d85-bca3-4636-ad89-a73926b4047f/bin/uautomizer-verify-jihMAELWvX/data/24071e2c7/e99a89c5421d4183b76b91f34b4c44ee [2024-11-08 19:13:33,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 19:13:33,362 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 19:13:33,364 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 19:13:33,365 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 19:13:33,376 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 19:13:33,377 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:13:33" (1/1) ... [2024-11-08 19:13:33,378 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f6c0399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:13:33, skipping insertion in model container [2024-11-08 19:13:33,379 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:13:33" (1/1) ... [2024-11-08 19:13:33,425 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 19:13:33,775 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:13:33,789 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 19:13:33,841 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:13:33,869 INFO L204 MainTranslator]: Completed translation [2024-11-08 19:13:33,870 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:13:33 WrapperNode [2024-11-08 19:13:33,870 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 19:13:33,875 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 19:13:33,875 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 19:13:33,876 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 19:13:33,886 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:13:33" (1/1) ... [2024-11-08 19:13:33,907 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:13:33" (1/1) ... [2024-11-08 19:13:33,975 INFO L138 Inliner]: procedures = 26, calls = 64, calls flagged for inlining = 23, calls inlined = 29, statements flattened = 379 [2024-11-08 19:13:33,983 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 19:13:33,984 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 19:13:33,984 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 19:13:33,985 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 19:13:34,001 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:13:33" (1/1) ... [2024-11-08 19:13:34,002 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:13:33" (1/1) ... [2024-11-08 19:13:34,008 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:13:33" (1/1) ... [2024-11-08 19:13:34,034 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-08 19:13:34,035 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:13:33" (1/1) ... [2024-11-08 19:13:34,035 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:13:33" (1/1) ... [2024-11-08 19:13:34,058 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:13:33" (1/1) ... [2024-11-08 19:13:34,065 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:13:33" (1/1) ... [2024-11-08 19:13:34,069 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:13:33" (1/1) ... [2024-11-08 19:13:34,072 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:13:33" (1/1) ... [2024-11-08 19:13:34,078 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 19:13:34,079 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 19:13:34,080 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 19:13:34,080 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 19:13:34,081 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:13:33" (1/1) ... [2024-11-08 19:13:34,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:13:34,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c580d85-bca3-4636-ad89-a73926b4047f/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:13:34,130 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c580d85-bca3-4636-ad89-a73926b4047f/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 19:13:34,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c580d85-bca3-4636-ad89-a73926b4047f/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 19:13:34,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 19:13:34,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 19:13:34,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 19:13:34,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 19:13:34,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 19:13:34,189 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 19:13:34,189 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 19:13:34,189 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 19:13:34,189 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 19:13:34,190 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-08 19:13:34,190 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-08 19:13:34,193 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-08 19:13:34,194 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-08 19:13:34,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 19:13:34,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 19:13:34,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 19:13:34,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 19:13:34,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 19:13:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 19:13:34,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 19:13:34,201 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 19:13:34,416 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 19:13:34,420 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 19:13:35,593 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 19:13:35,593 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 19:13:36,605 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 19:13:36,605 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 19:13:36,606 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:13:36 BoogieIcfgContainer [2024-11-08 19:13:36,607 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 19:13:36,612 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 19:13:36,613 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 19:13:36,618 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 19:13:36,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 07:13:33" (1/3) ... [2024-11-08 19:13:36,620 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cdf4ca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:13:36, skipping insertion in model container [2024-11-08 19:13:36,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:13:33" (2/3) ... [2024-11-08 19:13:36,621 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cdf4ca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:13:36, skipping insertion in model container [2024-11-08 19:13:36,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:13:36" (3/3) ... [2024-11-08 19:13:36,625 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series2.wvr.c [2024-11-08 19:13:36,654 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 19:13:36,655 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2024-11-08 19:13:36,655 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 19:13:36,901 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-08 19:13:36,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 107 transitions, 242 flow [2024-11-08 19:13:37,077 INFO L124 PetriNetUnfolderBase]: 14/103 cut-off events. [2024-11-08 19:13:37,077 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-08 19:13:37,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 103 events. 14/103 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 291 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2024-11-08 19:13:37,084 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 107 transitions, 242 flow [2024-11-08 19:13:37,092 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 101 transitions, 223 flow [2024-11-08 19:13:37,111 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 19:13:37,124 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@e72399, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 19:13:37,125 INFO L334 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2024-11-08 19:13:37,133 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 19:13:37,133 INFO L124 PetriNetUnfolderBase]: 2/9 cut-off events. [2024-11-08 19:13:37,133 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 19:13:37,134 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:13:37,135 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 19:13:37,135 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-08 19:13:37,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:13:37,143 INFO L85 PathProgramCache]: Analyzing trace with hash 38502750, now seen corresponding path program 1 times [2024-11-08 19:13:37,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:13:37,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208777562] [2024-11-08 19:13:37,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:13:37,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:13:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:13:37,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:13:37,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:13:37,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208777562] [2024-11-08 19:13:37,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208777562] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:13:37,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:13:37,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 19:13:37,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828106407] [2024-11-08 19:13:37,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:13:37,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 19:13:37,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:13:37,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 19:13:37,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:13:37,796 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 107 [2024-11-08 19:13:37,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 101 transitions, 223 flow. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:13:37,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:13:37,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 107 [2024-11-08 19:13:37,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:13:45,118 INFO L124 PetriNetUnfolderBase]: 14058/20321 cut-off events. [2024-11-08 19:13:45,118 INFO L125 PetriNetUnfolderBase]: For 456/456 co-relation queries the response was YES. [2024-11-08 19:13:45,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39700 conditions, 20321 events. 14058/20321 cut-off events. For 456/456 co-relation queries the response was YES. Maximal size of possible extension queue 2705. Compared 166922 event pairs, 13494 based on Foata normal form. 3/9187 useless extension candidates. Maximal degree in co-relation 36026. Up to 18358 conditions per place. [2024-11-08 19:13:45,447 INFO L140 encePairwiseOnDemand]: 80/107 looper letters, 49 selfloop transitions, 10 changer transitions 0/99 dead transitions. [2024-11-08 19:13:45,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 99 transitions, 337 flow [2024-11-08 19:13:45,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 19:13:45,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 19:13:45,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 252 transitions. [2024-11-08 19:13:45,470 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5887850467289719 [2024-11-08 19:13:45,474 INFO L175 Difference]: Start difference. First operand has 100 places, 101 transitions, 223 flow. Second operand 4 states and 252 transitions. [2024-11-08 19:13:45,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 99 transitions, 337 flow [2024-11-08 19:13:45,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 99 transitions, 324 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-08 19:13:45,553 INFO L231 Difference]: Finished difference. Result has 88 places, 99 transitions, 276 flow [2024-11-08 19:13:45,557 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=276, PETRI_PLACES=88, PETRI_TRANSITIONS=99} [2024-11-08 19:13:45,566 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, -12 predicate places. [2024-11-08 19:13:45,571 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 99 transitions, 276 flow [2024-11-08 19:13:45,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:13:45,571 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:13:45,572 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-08 19:13:45,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 19:13:45,572 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-08 19:13:45,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:13:45,574 INFO L85 PathProgramCache]: Analyzing trace with hash 103544183, now seen corresponding path program 1 times [2024-11-08 19:13:45,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:13:45,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228932848] [2024-11-08 19:13:45,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:13:45,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:13:45,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:13:45,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:13:45,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:13:45,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228932848] [2024-11-08 19:13:45,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228932848] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:13:45,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364217132] [2024-11-08 19:13:45,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:13:45,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:13:45,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c580d85-bca3-4636-ad89-a73926b4047f/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:13:45,874 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c580d85-bca3-4636-ad89-a73926b4047f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:13:45,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c580d85-bca3-4636-ad89-a73926b4047f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 19:13:46,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:13:46,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 19:13:46,080 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:13:46,175 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:13:46,175 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:13:46,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364217132] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:13:46,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 19:13:46,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-08 19:13:46,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847525288] [2024-11-08 19:13:46,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:13:46,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 19:13:46,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:13:46,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 19:13:46,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 19:13:46,272 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 107 [2024-11-08 19:13:46,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 99 transitions, 276 flow. Second operand has 6 states, 6 states have (on average 44.833333333333336) internal successors, (269), 6 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:13:46,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:13:46,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 107 [2024-11-08 19:13:46,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:13:52,918 INFO L124 PetriNetUnfolderBase]: 14058/20318 cut-off events. [2024-11-08 19:13:52,918 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-11-08 19:13:53,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39233 conditions, 20318 events. 14058/20318 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 2705. Compared 167277 event pairs, 13494 based on Foata normal form. 3/9184 useless extension candidates. Maximal degree in co-relation 39151. Up to 18343 conditions per place. [2024-11-08 19:13:53,164 INFO L140 encePairwiseOnDemand]: 94/107 looper letters, 39 selfloop transitions, 17 changer transitions 0/96 dead transitions. [2024-11-08 19:13:53,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 96 transitions, 376 flow [2024-11-08 19:13:53,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 19:13:53,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 19:13:53,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 323 transitions. [2024-11-08 19:13:53,172 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5031152647975078 [2024-11-08 19:13:53,172 INFO L175 Difference]: Start difference. First operand has 88 places, 99 transitions, 276 flow. Second operand 6 states and 323 transitions. [2024-11-08 19:13:53,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 96 transitions, 376 flow [2024-11-08 19:13:53,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 96 transitions, 376 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 19:13:53,179 INFO L231 Difference]: Finished difference. Result has 90 places, 96 transitions, 298 flow [2024-11-08 19:13:53,181 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=298, PETRI_PLACES=90, PETRI_TRANSITIONS=96} [2024-11-08 19:13:53,182 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, -10 predicate places. [2024-11-08 19:13:53,183 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 96 transitions, 298 flow [2024-11-08 19:13:53,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.833333333333336) internal successors, (269), 6 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:13:53,185 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:13:53,185 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-08 19:13:53,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c580d85-bca3-4636-ad89-a73926b4047f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 19:13:53,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c580d85-bca3-4636-ad89-a73926b4047f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:13:53,388 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-08 19:13:53,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:13:53,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1085096336, now seen corresponding path program 1 times [2024-11-08 19:13:53,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:13:53,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291625784] [2024-11-08 19:13:53,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:13:53,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:13:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:13:53,603 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:13:53,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:13:53,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291625784] [2024-11-08 19:13:53,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291625784] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:13:53,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315471634] [2024-11-08 19:13:53,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:13:53,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:13:53,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c580d85-bca3-4636-ad89-a73926b4047f/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:13:53,608 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c580d85-bca3-4636-ad89-a73926b4047f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:13:53,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c580d85-bca3-4636-ad89-a73926b4047f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 19:13:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:13:53,766 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 19:13:53,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:13:53,823 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:13:53,823 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:13:53,901 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:13:53,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315471634] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:13:53,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:13:53,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-08 19:13:53,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274005076] [2024-11-08 19:13:53,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:13:53,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 19:13:53,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:13:53,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 19:13:53,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-08 19:13:54,149 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 107 [2024-11-08 19:13:54,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 96 transitions, 298 flow. Second operand has 12 states, 12 states have (on average 45.083333333333336) internal successors, (541), 12 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:13:54,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:13:54,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 107 [2024-11-08 19:13:54,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:13:59,050 INFO L124 PetriNetUnfolderBase]: 14076/20381 cut-off events. [2024-11-08 19:13:59,050 INFO L125 PetriNetUnfolderBase]: For 188/188 co-relation queries the response was YES. [2024-11-08 19:13:59,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39401 conditions, 20381 events. 14076/20381 cut-off events. For 188/188 co-relation queries the response was YES. Maximal size of possible extension queue 2705. Compared 167717 event pairs, 13494 based on Foata normal form. 9/9247 useless extension candidates. Maximal degree in co-relation 39153. Up to 18358 conditions per place. [2024-11-08 19:13:59,322 INFO L140 encePairwiseOnDemand]: 94/107 looper letters, 46 selfloop transitions, 37 changer transitions 0/123 dead transitions. [2024-11-08 19:13:59,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 123 transitions, 638 flow [2024-11-08 19:13:59,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 19:13:59,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-08 19:13:59,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 532 transitions. [2024-11-08 19:13:59,327 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.497196261682243 [2024-11-08 19:13:59,327 INFO L175 Difference]: Start difference. First operand has 90 places, 96 transitions, 298 flow. Second operand 10 states and 532 transitions. [2024-11-08 19:13:59,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 123 transitions, 638 flow [2024-11-08 19:13:59,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 123 transitions, 555 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-08 19:13:59,339 INFO L231 Difference]: Finished difference. Result has 97 places, 123 transitions, 513 flow [2024-11-08 19:13:59,340 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=513, PETRI_PLACES=97, PETRI_TRANSITIONS=123} [2024-11-08 19:13:59,341 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, -3 predicate places. [2024-11-08 19:13:59,343 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 123 transitions, 513 flow [2024-11-08 19:13:59,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 45.083333333333336) internal successors, (541), 12 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:13:59,344 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:13:59,344 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:13:59,372 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c580d85-bca3-4636-ad89-a73926b4047f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 19:13:59,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c580d85-bca3-4636-ad89-a73926b4047f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:13:59,549 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-08 19:13:59,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:13:59,553 INFO L85 PathProgramCache]: Analyzing trace with hash -152220014, now seen corresponding path program 1 times [2024-11-08 19:13:59,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:13:59,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990481788] [2024-11-08 19:13:59,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:13:59,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:13:59,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:13:59,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:13:59,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:13:59,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990481788] [2024-11-08 19:13:59,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990481788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:13:59,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:13:59,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 19:13:59,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140706378] [2024-11-08 19:13:59,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:13:59,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:13:59,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:13:59,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:13:59,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:13:59,793 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 107 [2024-11-08 19:13:59,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 123 transitions, 513 flow. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:13:59,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:13:59,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 107 [2024-11-08 19:13:59,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:14:06,084 INFO L124 PetriNetUnfolderBase]: 19264/29590 cut-off events. [2024-11-08 19:14:06,084 INFO L125 PetriNetUnfolderBase]: For 233/233 co-relation queries the response was YES. [2024-11-08 19:14:06,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54707 conditions, 29590 events. 19264/29590 cut-off events. For 233/233 co-relation queries the response was YES. Maximal size of possible extension queue 2858. Compared 259611 event pairs, 5538 based on Foata normal form. 0/15199 useless extension candidates. Maximal degree in co-relation 54600. Up to 16566 conditions per place. [2024-11-08 19:14:06,393 INFO L140 encePairwiseOnDemand]: 103/107 looper letters, 109 selfloop transitions, 2 changer transitions 0/154 dead transitions. [2024-11-08 19:14:06,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 154 transitions, 804 flow [2024-11-08 19:14:06,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:14:06,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 19:14:06,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2024-11-08 19:14:06,395 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7071651090342679 [2024-11-08 19:14:06,395 INFO L175 Difference]: Start difference. First operand has 97 places, 123 transitions, 513 flow. Second operand 3 states and 227 transitions. [2024-11-08 19:14:06,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 154 transitions, 804 flow [2024-11-08 19:14:06,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 154 transitions, 767 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-08 19:14:06,401 INFO L231 Difference]: Finished difference. Result has 98 places, 124 transitions, 490 flow [2024-11-08 19:14:06,402 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=490, PETRI_PLACES=98, PETRI_TRANSITIONS=124} [2024-11-08 19:14:06,403 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, -2 predicate places. [2024-11-08 19:14:06,403 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 124 transitions, 490 flow [2024-11-08 19:14:06,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:14:06,404 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:14:06,404 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:14:06,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 19:14:06,405 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-08 19:14:06,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:14:06,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1723630522, now seen corresponding path program 1 times [2024-11-08 19:14:06,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:14:06,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042080740] [2024-11-08 19:14:06,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:14:06,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:14:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:14:06,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:14:06,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:14:06,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042080740] [2024-11-08 19:14:06,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042080740] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:14:06,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:14:06,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:14:06,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622674790] [2024-11-08 19:14:06,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:14:06,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 19:14:06,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:14:06,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 19:14:06,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:14:06,649 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 107 [2024-11-08 19:14:06,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 124 transitions, 490 flow. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:14:06,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:14:06,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 107 [2024-11-08 19:14:06,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:14:13,032 INFO L124 PetriNetUnfolderBase]: 20547/29783 cut-off events. [2024-11-08 19:14:13,032 INFO L125 PetriNetUnfolderBase]: For 2170/2170 co-relation queries the response was YES. [2024-11-08 19:14:13,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62376 conditions, 29783 events. 20547/29783 cut-off events. For 2170/2170 co-relation queries the response was YES. Maximal size of possible extension queue 2850. Compared 246881 event pairs, 18738 based on Foata normal form. 410/15427 useless extension candidates. Maximal degree in co-relation 62233. Up to 24383 conditions per place. [2024-11-08 19:14:13,372 INFO L140 encePairwiseOnDemand]: 91/107 looper letters, 122 selfloop transitions, 10 changer transitions 1/170 dead transitions. [2024-11-08 19:14:13,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 170 transitions, 928 flow [2024-11-08 19:14:13,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 19:14:13,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 19:14:13,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 319 transitions. [2024-11-08 19:14:13,375 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5962616822429907 [2024-11-08 19:14:13,375 INFO L175 Difference]: Start difference. First operand has 98 places, 124 transitions, 490 flow. Second operand 5 states and 319 transitions. [2024-11-08 19:14:13,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 170 transitions, 928 flow [2024-11-08 19:14:13,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 170 transitions, 925 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 19:14:13,384 INFO L231 Difference]: Finished difference. Result has 104 places, 128 transitions, 566 flow [2024-11-08 19:14:13,385 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=566, PETRI_PLACES=104, PETRI_TRANSITIONS=128} [2024-11-08 19:14:13,386 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 4 predicate places. [2024-11-08 19:14:13,386 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 128 transitions, 566 flow [2024-11-08 19:14:13,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:14:13,387 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:14:13,387 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:14:13,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 19:14:13,388 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-08 19:14:13,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:14:13,389 INFO L85 PathProgramCache]: Analyzing trace with hash 236534862, now seen corresponding path program 1 times [2024-11-08 19:14:13,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:14:13,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801698046] [2024-11-08 19:14:13,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:14:13,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:14:13,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:14:13,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:14:13,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:14:13,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801698046] [2024-11-08 19:14:13,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801698046] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:14:13,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:14:13,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 19:14:13,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10258279] [2024-11-08 19:14:13,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:14:13,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:14:13,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:14:13,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:14:13,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:14:13,507 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 107 [2024-11-08 19:14:13,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 128 transitions, 566 flow. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:14:13,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:14:13,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 107 [2024-11-08 19:14:13,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:14:19,044 INFO L124 PetriNetUnfolderBase]: 17528/25414 cut-off events. [2024-11-08 19:14:19,045 INFO L125 PetriNetUnfolderBase]: For 3477/3477 co-relation queries the response was YES. [2024-11-08 19:14:19,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59025 conditions, 25414 events. 17528/25414 cut-off events. For 3477/3477 co-relation queries the response was YES. Maximal size of possible extension queue 2467. Compared 207034 event pairs, 15850 based on Foata normal form. 0/13418 useless extension candidates. Maximal degree in co-relation 58884. Up to 22803 conditions per place. [2024-11-08 19:14:19,260 INFO L140 encePairwiseOnDemand]: 105/107 looper letters, 81 selfloop transitions, 1 changer transitions 0/127 dead transitions. [2024-11-08 19:14:19,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 127 transitions, 726 flow [2024-11-08 19:14:19,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:14:19,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 19:14:19,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 194 transitions. [2024-11-08 19:14:19,262 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6043613707165109 [2024-11-08 19:14:19,262 INFO L175 Difference]: Start difference. First operand has 104 places, 128 transitions, 566 flow. Second operand 3 states and 194 transitions. [2024-11-08 19:14:19,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 127 transitions, 726 flow [2024-11-08 19:14:19,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 127 transitions, 720 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 19:14:19,276 INFO L231 Difference]: Finished difference. Result has 104 places, 127 transitions, 558 flow [2024-11-08 19:14:19,276 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=558, PETRI_PLACES=104, PETRI_TRANSITIONS=127} [2024-11-08 19:14:19,279 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 4 predicate places. [2024-11-08 19:14:19,279 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 127 transitions, 558 flow [2024-11-08 19:14:19,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:14:19,282 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:14:19,282 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:14:19,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 19:14:19,282 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-08 19:14:19,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:14:19,283 INFO L85 PathProgramCache]: Analyzing trace with hash 236534863, now seen corresponding path program 1 times [2024-11-08 19:14:19,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:14:19,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236793043] [2024-11-08 19:14:19,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:14:19,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:14:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:14:19,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:14:19,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:14:19,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236793043] [2024-11-08 19:14:19,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236793043] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:14:19,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644660957] [2024-11-08 19:14:19,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:14:19,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:14:19,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c580d85-bca3-4636-ad89-a73926b4047f/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:14:19,434 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c580d85-bca3-4636-ad89-a73926b4047f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:14:19,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c580d85-bca3-4636-ad89-a73926b4047f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 19:14:19,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:14:19,607 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 19:14:19,609 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:14:19,677 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:14:19,677 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:14:19,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644660957] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:14:19,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 19:14:19,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [2] total 5 [2024-11-08 19:14:19,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908281201] [2024-11-08 19:14:19,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:14:19,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 19:14:19,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:14:19,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 19:14:19,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 19:14:19,707 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 107 [2024-11-08 19:14:19,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 127 transitions, 558 flow. Second operand has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:14:19,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:14:19,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 107 [2024-11-08 19:14:19,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:14:25,488 INFO L124 PetriNetUnfolderBase]: 18948/27838 cut-off events. [2024-11-08 19:14:25,488 INFO L125 PetriNetUnfolderBase]: For 3994/3994 co-relation queries the response was YES. [2024-11-08 19:14:25,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64484 conditions, 27838 events. 18948/27838 cut-off events. For 3994/3994 co-relation queries the response was YES. Maximal size of possible extension queue 2564. Compared 231441 event pairs, 17162 based on Foata normal form. 508/15563 useless extension candidates. Maximal degree in co-relation 64466. Up to 22839 conditions per place. [2024-11-08 19:14:25,743 INFO L140 encePairwiseOnDemand]: 92/107 looper letters, 144 selfloop transitions, 12 changer transitions 1/194 dead transitions. [2024-11-08 19:14:25,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 194 transitions, 1197 flow [2024-11-08 19:14:25,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 19:14:25,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 19:14:25,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 326 transitions. [2024-11-08 19:14:25,746 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6093457943925233 [2024-11-08 19:14:25,746 INFO L175 Difference]: Start difference. First operand has 104 places, 127 transitions, 558 flow. Second operand 5 states and 326 transitions. [2024-11-08 19:14:25,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 194 transitions, 1197 flow [2024-11-08 19:14:25,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 194 transitions, 1196 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 19:14:25,763 INFO L231 Difference]: Finished difference. Result has 110 places, 137 transitions, 703 flow [2024-11-08 19:14:25,764 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=703, PETRI_PLACES=110, PETRI_TRANSITIONS=137} [2024-11-08 19:14:25,765 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 10 predicate places. [2024-11-08 19:14:25,765 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 137 transitions, 703 flow [2024-11-08 19:14:25,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:14:25,766 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:14:25,766 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:14:25,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c580d85-bca3-4636-ad89-a73926b4047f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 19:14:25,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c580d85-bca3-4636-ad89-a73926b4047f/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:14:25,968 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-08 19:14:25,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:14:25,968 INFO L85 PathProgramCache]: Analyzing trace with hash 817601693, now seen corresponding path program 1 times [2024-11-08 19:14:25,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:14:25,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752899462] [2024-11-08 19:14:25,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:14:25,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:14:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:14:26,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 19:14:26,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:14:26,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752899462] [2024-11-08 19:14:26,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752899462] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:14:26,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:14:26,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 19:14:26,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689913608] [2024-11-08 19:14:26,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:14:26,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 19:14:26,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:14:26,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 19:14:26,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-08 19:14:26,498 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 107 [2024-11-08 19:14:26,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 137 transitions, 703 flow. Second operand has 6 states, 6 states have (on average 42.666666666666664) internal successors, (256), 6 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) [2024-11-08 19:14:26,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:14:26,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 107 [2024-11-08 19:14:26,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand