./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ad3554-e3e6-47ba-92c9-c7c826eabb5a/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ad3554-e3e6-47ba-92c9-c7c826eabb5a/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ad3554-e3e6-47ba-92c9-c7c826eabb5a/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ad3554-e3e6-47ba-92c9-c7c826eabb5a/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ad3554-e3e6-47ba-92c9-c7c826eabb5a/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ad3554-e3e6-47ba-92c9-c7c826eabb5a/bin/uautomizer-verify-4GaUIPS5ZU --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6fdb5189ea0a06d32886b44c2108d225ef2901fa5113fdc3856a252d0f653190 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:19:02,619 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:19:02,678 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ad3554-e3e6-47ba-92c9-c7c826eabb5a/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-31 22:19:02,682 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:19:02,683 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:19:02,706 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:19:02,707 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:19:02,707 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:19:02,708 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:19:02,708 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:19:02,708 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:19:02,709 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:19:02,709 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:19:02,710 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:19:02,710 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:19:02,710 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:19:02,711 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:19:02,711 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:19:02,711 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:19:02,712 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:19:02,712 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:19:02,713 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:19:02,713 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:19:02,713 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:19:02,713 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:19:02,714 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-31 22:19:02,714 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:19:02,714 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:19:02,715 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:19:02,715 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:19:02,715 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:19:02,716 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:19:02,719 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:19:02,719 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:19:02,720 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:19:02,720 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:19:02,720 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:19:02,721 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:19:02,721 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:19:02,721 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:19:02,721 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:19:02,724 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:19:02,725 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:19:02,725 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:19:02,725 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_a3ad3554-e3e6-47ba-92c9-c7c826eabb5a/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ad3554-e3e6-47ba-92c9-c7c826eabb5a/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6fdb5189ea0a06d32886b44c2108d225ef2901fa5113fdc3856a252d0f653190 [2024-10-31 22:19:03,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:19:03,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:19:03,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:19:03,038 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:19:03,039 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:19:03,040 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ad3554-e3e6-47ba-92c9-c7c826eabb5a/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c Unable to find full path for "g++" [2024-10-31 22:19:05,095 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:19:05,379 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:19:05,380 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ad3554-e3e6-47ba-92c9-c7c826eabb5a/sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c [2024-10-31 22:19:05,392 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ad3554-e3e6-47ba-92c9-c7c826eabb5a/bin/uautomizer-verify-4GaUIPS5ZU/data/2cdc31aab/8171975e34fe4b6780e099b76c85f141/FLAGedb23e6f6 [2024-10-31 22:19:05,407 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ad3554-e3e6-47ba-92c9-c7c826eabb5a/bin/uautomizer-verify-4GaUIPS5ZU/data/2cdc31aab/8171975e34fe4b6780e099b76c85f141 [2024-10-31 22:19:05,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:19:05,412 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:19:05,413 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:19:05,414 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:19:05,420 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:19:05,423 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:19:05" (1/1) ... [2024-10-31 22:19:05,424 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25d45340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:05, skipping insertion in model container [2024-10-31 22:19:05,425 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:19:05" (1/1) ... [2024-10-31 22:19:05,455 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:19:05,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:19:05,743 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:19:05,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:19:05,799 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:19:05,800 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:05 WrapperNode [2024-10-31 22:19:05,800 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:19:05,801 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:19:05,801 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:19:05,801 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:19:05,810 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:05" (1/1) ... [2024-10-31 22:19:05,825 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:05" (1/1) ... [2024-10-31 22:19:05,882 INFO L138 Inliner]: procedures = 27, calls = 60, calls flagged for inlining = 19, calls inlined = 27, statements flattened = 418 [2024-10-31 22:19:05,882 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:19:05,887 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:19:05,887 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:19:05,887 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:19:05,903 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:05" (1/1) ... [2024-10-31 22:19:05,903 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:05" (1/1) ... [2024-10-31 22:19:05,915 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:05" (1/1) ... [2024-10-31 22:19:05,956 INFO L175 MemorySlicer]: Split 30 memory accesses to 3 slices as follows [2, 24, 4]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 4 writes are split as follows [0, 3, 1]. [2024-10-31 22:19:05,957 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:05" (1/1) ... [2024-10-31 22:19:05,957 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:05" (1/1) ... [2024-10-31 22:19:05,983 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:05" (1/1) ... [2024-10-31 22:19:05,994 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:05" (1/1) ... [2024-10-31 22:19:05,997 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:05" (1/1) ... [2024-10-31 22:19:05,999 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:05" (1/1) ... [2024-10-31 22:19:06,004 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:19:06,005 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:19:06,005 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:19:06,005 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:19:06,006 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:05" (1/1) ... [2024-10-31 22:19:06,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:19:06,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ad3554-e3e6-47ba-92c9-c7c826eabb5a/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:19:06,043 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ad3554-e3e6-47ba-92c9-c7c826eabb5a/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:19:06,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ad3554-e3e6-47ba-92c9-c7c826eabb5a/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:19:06,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:19:06,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-31 22:19:06,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-31 22:19:06,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-31 22:19:06,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:19:06,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:19:06,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-31 22:19:06,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:19:06,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:19:06,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-31 22:19:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-31 22:19:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-31 22:19:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-31 22:19:06,094 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-31 22:19:06,094 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-31 22:19:06,094 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-31 22:19:06,094 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-31 22:19:06,094 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-31 22:19:06,095 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-31 22:19:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:19:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:19:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-31 22:19:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:19:06,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:19:06,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-31 22:19:06,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:19:06,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:19:06,099 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:19:06,358 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:19:06,369 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:19:07,385 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:19:07,385 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:19:08,228 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:19:08,229 INFO L316 CfgBuilder]: Removed 7 assume(true) statements. [2024-10-31 22:19:08,230 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:19:08 BoogieIcfgContainer [2024-10-31 22:19:08,230 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:19:08,233 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:19:08,234 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:19:08,238 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:19:08,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:19:05" (1/3) ... [2024-10-31 22:19:08,240 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e8aa31a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:19:08, skipping insertion in model container [2024-10-31 22:19:08,240 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:05" (2/3) ... [2024-10-31 22:19:08,242 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e8aa31a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:19:08, skipping insertion in model container [2024-10-31 22:19:08,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:19:08" (3/3) ... [2024-10-31 22:19:08,245 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product-alt.wvr.c [2024-10-31 22:19:08,268 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:19:08,268 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2024-10-31 22:19:08,268 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:19:08,500 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-31 22:19:08,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 83 transitions, 187 flow [2024-10-31 22:19:08,643 INFO L124 PetriNetUnfolderBase]: 7/80 cut-off events. [2024-10-31 22:19:08,644 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-31 22:19:08,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 80 events. 7/80 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 274 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2024-10-31 22:19:08,651 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 83 transitions, 187 flow [2024-10-31 22:19:08,657 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 78 transitions, 171 flow [2024-10-31 22:19:08,672 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:19:08,681 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;@389484e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:19:08,682 INFO L334 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2024-10-31 22:19:08,686 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:19:08,686 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-31 22:19:08,686 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:19:08,687 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:19:08,688 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-31 22:19:08,688 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-10-31 22:19:08,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:08,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1368666, now seen corresponding path program 1 times [2024-10-31 22:19:08,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:08,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246519265] [2024-10-31 22:19:08,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:08,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:08,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:09,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:09,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:09,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246519265] [2024-10-31 22:19:09,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246519265] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:09,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:09,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:19:09,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900818051] [2024-10-31 22:19:09,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:09,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:19:09,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:09,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:19:09,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:19:09,389 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 83 [2024-10-31 22:19:09,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 78 transitions, 171 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:09,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:19:09,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 83 [2024-10-31 22:19:09,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:19:11,794 INFO L124 PetriNetUnfolderBase]: 4166/6692 cut-off events. [2024-10-31 22:19:11,794 INFO L125 PetriNetUnfolderBase]: For 304/304 co-relation queries the response was YES. [2024-10-31 22:19:11,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12884 conditions, 6692 events. 4166/6692 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 41308 event pairs, 3616 based on Foata normal form. 3/3715 useless extension candidates. Maximal degree in co-relation 12198. Up to 5909 conditions per place. [2024-10-31 22:19:11,847 INFO L140 encePairwiseOnDemand]: 60/83 looper letters, 52 selfloop transitions, 11 changer transitions 0/81 dead transitions. [2024-10-31 22:19:11,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 81 transitions, 303 flow [2024-10-31 22:19:11,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:19:11,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:19:11,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 159 transitions. [2024-10-31 22:19:11,863 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4789156626506024 [2024-10-31 22:19:11,865 INFO L175 Difference]: Start difference. First operand has 81 places, 78 transitions, 171 flow. Second operand 4 states and 159 transitions. [2024-10-31 22:19:11,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 81 transitions, 303 flow [2024-10-31 22:19:11,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 81 transitions, 294 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-31 22:19:11,876 INFO L231 Difference]: Finished difference. Result has 76 places, 81 transitions, 242 flow [2024-10-31 22:19:11,878 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=242, PETRI_PLACES=76, PETRI_TRANSITIONS=81} [2024-10-31 22:19:11,882 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, -5 predicate places. [2024-10-31 22:19:11,882 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 81 transitions, 242 flow [2024-10-31 22:19:11,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:11,883 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:19:11,883 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-31 22:19:11,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:19:11,884 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-10-31 22:19:11,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:11,885 INFO L85 PathProgramCache]: Analyzing trace with hash 2120595652, now seen corresponding path program 1 times [2024-10-31 22:19:11,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:11,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696196396] [2024-10-31 22:19:11,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:11,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:11,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:12,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:12,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:12,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696196396] [2024-10-31 22:19:12,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696196396] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:19:12,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153295942] [2024-10-31 22:19:12,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:12,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:19:12,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ad3554-e3e6-47ba-92c9-c7c826eabb5a/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:19:12,095 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ad3554-e3e6-47ba-92c9-c7c826eabb5a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:19:12,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ad3554-e3e6-47ba-92c9-c7c826eabb5a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:19:12,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:12,264 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:19:12,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:19:12,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:12,338 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:19:12,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153295942] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:12,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:19:12,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-31 22:19:12,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447953040] [2024-10-31 22:19:12,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:12,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:19:12,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:12,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:19:12,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:19:12,395 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 83 [2024-10-31 22:19:12,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 81 transitions, 242 flow. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:12,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:19:12,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 83 [2024-10-31 22:19:12,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:19:14,651 INFO L124 PetriNetUnfolderBase]: 4166/6689 cut-off events. [2024-10-31 22:19:14,651 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2024-10-31 22:19:14,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12812 conditions, 6689 events. 4166/6689 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 41343 event pairs, 3616 based on Foata normal form. 3/3717 useless extension candidates. Maximal degree in co-relation 12740. Up to 5894 conditions per place. [2024-10-31 22:19:14,710 INFO L140 encePairwiseOnDemand]: 69/83 looper letters, 41 selfloop transitions, 19 changer transitions 0/78 dead transitions. [2024-10-31 22:19:14,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 78 transitions, 350 flow [2024-10-31 22:19:14,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:19:14,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:19:14,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 189 transitions. [2024-10-31 22:19:14,714 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3795180722891566 [2024-10-31 22:19:14,715 INFO L175 Difference]: Start difference. First operand has 76 places, 81 transitions, 242 flow. Second operand 6 states and 189 transitions. [2024-10-31 22:19:14,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 78 transitions, 350 flow [2024-10-31 22:19:14,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 78 transitions, 350 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:19:14,719 INFO L231 Difference]: Finished difference. Result has 78 places, 78 transitions, 268 flow [2024-10-31 22:19:14,721 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=268, PETRI_PLACES=78, PETRI_TRANSITIONS=78} [2024-10-31 22:19:14,723 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, -3 predicate places. [2024-10-31 22:19:14,723 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 78 transitions, 268 flow [2024-10-31 22:19:14,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:14,724 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:19:14,724 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-31 22:19:14,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ad3554-e3e6-47ba-92c9-c7c826eabb5a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:19:14,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ad3554-e3e6-47ba-92c9-c7c826eabb5a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:19:14,929 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-10-31 22:19:14,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:14,929 INFO L85 PathProgramCache]: Analyzing trace with hash 2122047894, now seen corresponding path program 1 times [2024-10-31 22:19:14,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:14,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467240459] [2024-10-31 22:19:14,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:14,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:15,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:15,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:15,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467240459] [2024-10-31 22:19:15,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467240459] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:15,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:15,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:19:15,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900454367] [2024-10-31 22:19:15,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:15,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:19:15,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:15,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:19:15,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:19:15,078 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 83 [2024-10-31 22:19:15,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 78 transitions, 268 flow. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:15,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:19:15,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 83 [2024-10-31 22:19:15,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:19:16,689 INFO L124 PetriNetUnfolderBase]: 4169/6702 cut-off events. [2024-10-31 22:19:16,689 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2024-10-31 22:19:16,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12872 conditions, 6702 events. 4169/6702 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 41507 event pairs, 3616 based on Foata normal form. 1/3730 useless extension candidates. Maximal degree in co-relation 12761. Up to 5912 conditions per place. [2024-10-31 22:19:16,750 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 62 selfloop transitions, 6 changer transitions 0/87 dead transitions. [2024-10-31 22:19:16,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 87 transitions, 458 flow [2024-10-31 22:19:16,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:19:16,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:19:16,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 158 transitions. [2024-10-31 22:19:16,753 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4759036144578313 [2024-10-31 22:19:16,753 INFO L175 Difference]: Start difference. First operand has 78 places, 78 transitions, 268 flow. Second operand 4 states and 158 transitions. [2024-10-31 22:19:16,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 87 transitions, 458 flow [2024-10-31 22:19:16,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 87 transitions, 394 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-10-31 22:19:16,760 INFO L231 Difference]: Finished difference. Result has 78 places, 82 transitions, 265 flow [2024-10-31 22:19:16,762 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=265, PETRI_PLACES=78, PETRI_TRANSITIONS=82} [2024-10-31 22:19:16,763 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, -3 predicate places. [2024-10-31 22:19:16,764 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 82 transitions, 265 flow [2024-10-31 22:19:16,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:16,765 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:19:16,765 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-31 22:19:16,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:19:16,766 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-10-31 22:19:16,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:16,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1313957154, now seen corresponding path program 1 times [2024-10-31 22:19:16,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:16,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313692823] [2024-10-31 22:19:16,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:16,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:16,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:16,928 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:16,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:16,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313692823] [2024-10-31 22:19:16,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313692823] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:19:16,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579996786] [2024-10-31 22:19:16,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:16,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:19:16,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ad3554-e3e6-47ba-92c9-c7c826eabb5a/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:19:16,932 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ad3554-e3e6-47ba-92c9-c7c826eabb5a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:19:16,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ad3554-e3e6-47ba-92c9-c7c826eabb5a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:19:17,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:17,089 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:19:17,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:19:17,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:17,132 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:19:17,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:17,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579996786] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:19:17,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:19:17,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-31 22:19:17,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106321097] [2024-10-31 22:19:17,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:19:17,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-31 22:19:17,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:17,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-31 22:19:17,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:19:17,249 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 83 [2024-10-31 22:19:17,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 82 transitions, 265 flow. Second operand has 12 states, 12 states have (on average 22.083333333333332) internal successors, (265), 12 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:17,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:19:17,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 83 [2024-10-31 22:19:17,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:19:19,621 INFO L124 PetriNetUnfolderBase]: 4181/6750 cut-off events. [2024-10-31 22:19:19,621 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2024-10-31 22:19:19,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12993 conditions, 6750 events. 4181/6750 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 42024 event pairs, 3616 based on Foata normal form. 12/3789 useless extension candidates. Maximal degree in co-relation 12889. Up to 5923 conditions per place. [2024-10-31 22:19:19,679 INFO L140 encePairwiseOnDemand]: 69/83 looper letters, 52 selfloop transitions, 42 changer transitions 0/112 dead transitions. [2024-10-31 22:19:19,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 112 transitions, 612 flow [2024-10-31 22:19:19,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:19:19,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-31 22:19:19,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 306 transitions. [2024-10-31 22:19:19,682 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3686746987951807 [2024-10-31 22:19:19,682 INFO L175 Difference]: Start difference. First operand has 78 places, 82 transitions, 265 flow. Second operand 10 states and 306 transitions. [2024-10-31 22:19:19,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 112 transitions, 612 flow [2024-10-31 22:19:19,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 112 transitions, 605 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:19:19,688 INFO L231 Difference]: Finished difference. Result has 89 places, 112 transitions, 555 flow [2024-10-31 22:19:19,689 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=555, PETRI_PLACES=89, PETRI_TRANSITIONS=112} [2024-10-31 22:19:19,689 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 8 predicate places. [2024-10-31 22:19:19,690 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 112 transitions, 555 flow [2024-10-31 22:19:19,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.083333333333332) internal successors, (265), 12 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:19,690 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:19:19,691 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:19,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ad3554-e3e6-47ba-92c9-c7c826eabb5a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 22:19:19,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ad3554-e3e6-47ba-92c9-c7c826eabb5a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:19:19,892 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-10-31 22:19:19,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:19,893 INFO L85 PathProgramCache]: Analyzing trace with hash -817322298, now seen corresponding path program 1 times [2024-10-31 22:19:19,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:19,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319588419] [2024-10-31 22:19:19,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:19,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:19,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:20,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:20,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:20,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319588419] [2024-10-31 22:19:20,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319588419] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:20,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:20,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:19:20,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483748341] [2024-10-31 22:19:20,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:20,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:19:20,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:20,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:19:20,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:19:20,082 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 83 [2024-10-31 22:19:20,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 112 transitions, 555 flow. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 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) [2024-10-31 22:19:20,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:19:20,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 83 [2024-10-31 22:19:20,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:19:21,904 INFO L124 PetriNetUnfolderBase]: 4196/6821 cut-off events. [2024-10-31 22:19:21,905 INFO L125 PetriNetUnfolderBase]: For 344/344 co-relation queries the response was YES. [2024-10-31 22:19:21,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13337 conditions, 6821 events. 4196/6821 cut-off events. For 344/344 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 42339 event pairs, 3616 based on Foata normal form. 2/3853 useless extension candidates. Maximal degree in co-relation 13115. Up to 5946 conditions per place. [2024-10-31 22:19:21,968 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 114 selfloop transitions, 15 changer transitions 0/150 dead transitions. [2024-10-31 22:19:21,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 150 transitions, 1099 flow [2024-10-31 22:19:21,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:19:21,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:19:21,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 204 transitions. [2024-10-31 22:19:21,970 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.491566265060241 [2024-10-31 22:19:21,970 INFO L175 Difference]: Start difference. First operand has 89 places, 112 transitions, 555 flow. Second operand 5 states and 204 transitions. [2024-10-31 22:19:21,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 150 transitions, 1099 flow [2024-10-31 22:19:21,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 150 transitions, 1041 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-10-31 22:19:21,981 INFO L231 Difference]: Finished difference. Result has 93 places, 118 transitions, 617 flow [2024-10-31 22:19:21,983 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=617, PETRI_PLACES=93, PETRI_TRANSITIONS=118} [2024-10-31 22:19:21,984 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 12 predicate places. [2024-10-31 22:19:21,986 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 118 transitions, 617 flow [2024-10-31 22:19:21,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 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) [2024-10-31 22:19:21,986 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:19:21,987 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:21,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:19:21,987 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-10-31 22:19:21,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:21,989 INFO L85 PathProgramCache]: Analyzing trace with hash 912089526, now seen corresponding path program 1 times [2024-10-31 22:19:21,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:21,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994958034] [2024-10-31 22:19:21,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:21,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:22,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:22,150 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:22,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:22,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994958034] [2024-10-31 22:19:22,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994958034] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:19:22,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55229778] [2024-10-31 22:19:22,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:22,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:19:22,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ad3554-e3e6-47ba-92c9-c7c826eabb5a/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:19:22,156 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ad3554-e3e6-47ba-92c9-c7c826eabb5a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:19:22,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ad3554-e3e6-47ba-92c9-c7c826eabb5a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:19:22,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:22,352 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:19:22,354 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:19:22,399 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:22,399 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:19:22,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55229778] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:22,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:19:22,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-31 22:19:22,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530190884] [2024-10-31 22:19:22,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:22,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:19:22,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:22,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:19:22,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:19:22,415 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 83 [2024-10-31 22:19:22,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 118 transitions, 617 flow. Second operand has 6 states, 6 states have (on average 26.5) internal successors, (159), 6 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:22,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:19:22,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 83 [2024-10-31 22:19:22,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:19:24,002 INFO L124 PetriNetUnfolderBase]: 4196/6819 cut-off events. [2024-10-31 22:19:24,003 INFO L125 PetriNetUnfolderBase]: For 300/300 co-relation queries the response was YES. [2024-10-31 22:19:24,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13334 conditions, 6819 events. 4196/6819 cut-off events. For 300/300 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 42394 event pairs, 3616 based on Foata normal form. 2/3850 useless extension candidates. Maximal degree in co-relation 13116. Up to 5926 conditions per place. [2024-10-31 22:19:24,055 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 89 selfloop transitions, 22 changer transitions 0/130 dead transitions. [2024-10-31 22:19:24,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 130 transitions, 932 flow [2024-10-31 22:19:24,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:19:24,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:19:24,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 206 transitions. [2024-10-31 22:19:24,057 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41365461847389556 [2024-10-31 22:19:24,057 INFO L175 Difference]: Start difference. First operand has 93 places, 118 transitions, 617 flow. Second operand 6 states and 206 transitions. [2024-10-31 22:19:24,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 130 transitions, 932 flow [2024-10-31 22:19:24,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 130 transitions, 930 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-31 22:19:24,064 INFO L231 Difference]: Finished difference. Result has 97 places, 117 transitions, 655 flow [2024-10-31 22:19:24,064 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=655, PETRI_PLACES=97, PETRI_TRANSITIONS=117} [2024-10-31 22:19:24,065 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 16 predicate places. [2024-10-31 22:19:24,066 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 117 transitions, 655 flow [2024-10-31 22:19:24,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.5) internal successors, (159), 6 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:24,066 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:19:24,066 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-10-31 22:19:24,090 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ad3554-e3e6-47ba-92c9-c7c826eabb5a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 22:19:24,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ad3554-e3e6-47ba-92c9-c7c826eabb5a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:19:24,268 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-10-31 22:19:24,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:24,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1789994421, now seen corresponding path program 1 times [2024-10-31 22:19:24,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:24,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754569201] [2024-10-31 22:19:24,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:24,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:24,410 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:24,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:24,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754569201] [2024-10-31 22:19:24,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754569201] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:19:24,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131537940] [2024-10-31 22:19:24,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:24,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:19:24,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ad3554-e3e6-47ba-92c9-c7c826eabb5a/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:19:24,414 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ad3554-e3e6-47ba-92c9-c7c826eabb5a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:19:24,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ad3554-e3e6-47ba-92c9-c7c826eabb5a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:19:24,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:24,593 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:19:24,594 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:19:24,627 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:24,628 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:19:24,681 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:24,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131537940] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:19:24,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:19:24,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-31 22:19:24,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335125369] [2024-10-31 22:19:24,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:19:24,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-31 22:19:24,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:24,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-31 22:19:24,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:19:24,700 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 83 [2024-10-31 22:19:24,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 117 transitions, 655 flow. Second operand has 12 states, 12 states have (on average 26.666666666666668) internal successors, (320), 12 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:24,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:19:24,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 83 [2024-10-31 22:19:24,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:19:26,553 INFO L124 PetriNetUnfolderBase]: 4229/6966 cut-off events. [2024-10-31 22:19:26,553 INFO L125 PetriNetUnfolderBase]: For 608/608 co-relation queries the response was YES. [2024-10-31 22:19:26,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13940 conditions, 6966 events. 4229/6966 cut-off events. For 608/608 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 43725 event pairs, 3616 based on Foata normal form. 6/4003 useless extension candidates. Maximal degree in co-relation 13535. Up to 5967 conditions per place. [2024-10-31 22:19:26,625 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 136 selfloop transitions, 38 changer transitions 0/193 dead transitions. [2024-10-31 22:19:26,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 193 transitions, 1613 flow [2024-10-31 22:19:26,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:19:26,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-31 22:19:26,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 326 transitions. [2024-10-31 22:19:26,628 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3927710843373494 [2024-10-31 22:19:26,628 INFO L175 Difference]: Start difference. First operand has 97 places, 117 transitions, 655 flow. Second operand 10 states and 326 transitions. [2024-10-31 22:19:26,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 193 transitions, 1613 flow [2024-10-31 22:19:26,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 193 transitions, 1473 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-10-31 22:19:26,646 INFO L231 Difference]: Finished difference. Result has 104 places, 141 transitions, 872 flow [2024-10-31 22:19:26,647 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=872, PETRI_PLACES=104, PETRI_TRANSITIONS=141} [2024-10-31 22:19:26,647 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 23 predicate places. [2024-10-31 22:19:26,648 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 141 transitions, 872 flow [2024-10-31 22:19:26,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 26.666666666666668) internal successors, (320), 12 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:26,649 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:19:26,649 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:26,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ad3554-e3e6-47ba-92c9-c7c826eabb5a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-31 22:19:26,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ad3554-e3e6-47ba-92c9-c7c826eabb5a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:19:26,850 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-10-31 22:19:26,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:26,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1454510550, now seen corresponding path program 1 times [2024-10-31 22:19:26,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:26,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724228739] [2024-10-31 22:19:26,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:26,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:26,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:27,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:19:27,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:27,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724228739] [2024-10-31 22:19:27,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724228739] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:27,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:27,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:19:27,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115139097] [2024-10-31 22:19:27,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:27,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:19:27,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:27,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:19:27,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:19:27,435 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 83 [2024-10-31 22:19:27,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 141 transitions, 872 flow. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:27,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:19:27,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 83 [2024-10-31 22:19:27,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:19:29,203 INFO L124 PetriNetUnfolderBase]: 4352/7180 cut-off events. [2024-10-31 22:19:29,204 INFO L125 PetriNetUnfolderBase]: For 639/639 co-relation queries the response was YES. [2024-10-31 22:19:29,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14382 conditions, 7180 events. 4352/7180 cut-off events. For 639/639 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 44785 event pairs, 3740 based on Foata normal form. 0/4211 useless extension candidates. Maximal degree in co-relation 14101. Up to 6030 conditions per place. [2024-10-31 22:19:29,275 INFO L140 encePairwiseOnDemand]: 76/83 looper letters, 125 selfloop transitions, 8 changer transitions 15/168 dead transitions. [2024-10-31 22:19:29,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 168 transitions, 1295 flow [2024-10-31 22:19:29,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:19:29,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:19:29,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 179 transitions. [2024-10-31 22:19:29,277 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5391566265060241 [2024-10-31 22:19:29,277 INFO L175 Difference]: Start difference. First operand has 104 places, 141 transitions, 872 flow. Second operand 4 states and 179 transitions. [2024-10-31 22:19:29,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 168 transitions, 1295 flow [2024-10-31 22:19:29,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 168 transitions, 1269 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-31 22:19:29,287 INFO L231 Difference]: Finished difference. Result has 106 places, 140 transitions, 869 flow [2024-10-31 22:19:29,288 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=869, PETRI_PLACES=106, PETRI_TRANSITIONS=140} [2024-10-31 22:19:29,289 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 25 predicate places. [2024-10-31 22:19:29,289 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 140 transitions, 869 flow [2024-10-31 22:19:29,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:29,290 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:19:29,290 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-31 22:19:29,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:19:29,290 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-10-31 22:19:29,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:29,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1493479732, now seen corresponding path program 2 times [2024-10-31 22:19:29,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:29,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821356285] [2024-10-31 22:19:29,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:29,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:29,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:29,529 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:29,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:29,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821356285] [2024-10-31 22:19:29,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821356285] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:19:29,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143395987] [2024-10-31 22:19:29,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:19:29,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:19:29,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ad3554-e3e6-47ba-92c9-c7c826eabb5a/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:19:29,533 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ad3554-e3e6-47ba-92c9-c7c826eabb5a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:19:29,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ad3554-e3e6-47ba-92c9-c7c826eabb5a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 22:19:29,829 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-31 22:19:29,830 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:19:29,836 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:19:29,837 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:19:29,925 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-31 22:19:29,925 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:19:29,977 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-31 22:19:29,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143395987] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:19:29,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:19:29,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-31 22:19:29,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4651636] [2024-10-31 22:19:29,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:19:29,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-31 22:19:29,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:29,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-31 22:19:29,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-31 22:19:30,060 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 83 [2024-10-31 22:19:30,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 140 transitions, 869 flow. Second operand has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:30,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:19:30,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 83 [2024-10-31 22:19:30,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:19:31,984 INFO L124 PetriNetUnfolderBase]: 4241/7016 cut-off events. [2024-10-31 22:19:31,984 INFO L125 PetriNetUnfolderBase]: For 1224/1224 co-relation queries the response was YES. [2024-10-31 22:19:32,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14671 conditions, 7016 events. 4241/7016 cut-off events. For 1224/1224 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 44013 event pairs, 3616 based on Foata normal form. 14/4604 useless extension candidates. Maximal degree in co-relation 14348. Up to 6022 conditions per place. [2024-10-31 22:19:32,047 INFO L140 encePairwiseOnDemand]: 69/83 looper letters, 56 selfloop transitions, 79 changer transitions 0/152 dead transitions. [2024-10-31 22:19:32,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 152 transitions, 1235 flow [2024-10-31 22:19:32,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-31 22:19:32,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-31 22:19:32,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 603 transitions. [2024-10-31 22:19:32,051 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30271084337349397 [2024-10-31 22:19:32,052 INFO L175 Difference]: Start difference. First operand has 106 places, 140 transitions, 869 flow. Second operand 24 states and 603 transitions. [2024-10-31 22:19:32,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 152 transitions, 1235 flow [2024-10-31 22:19:32,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 152 transitions, 1217 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:19:32,064 INFO L231 Difference]: Finished difference. Result has 127 places, 152 transitions, 1143 flow [2024-10-31 22:19:32,065 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=843, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1143, PETRI_PLACES=127, PETRI_TRANSITIONS=152} [2024-10-31 22:19:32,065 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 46 predicate places. [2024-10-31 22:19:32,066 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 152 transitions, 1143 flow [2024-10-31 22:19:32,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:32,067 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:19:32,067 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:32,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ad3554-e3e6-47ba-92c9-c7c826eabb5a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-31 22:19:32,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ad3554-e3e6-47ba-92c9-c7c826eabb5a/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:19:32,272 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2024-10-31 22:19:32,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:32,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1380416714, now seen corresponding path program 1 times [2024-10-31 22:19:32,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:32,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672311526] [2024-10-31 22:19:32,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:32,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:32,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:32,850 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:19:32,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:32,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672311526] [2024-10-31 22:19:32,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672311526] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:32,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:32,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:19:32,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579156384] [2024-10-31 22:19:32,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:32,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:19:32,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:32,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:19:32,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:19:32,854 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 83 [2024-10-31 22:19:32,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 152 transitions, 1143 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:32,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:19:32,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 83 [2024-10-31 22:19:32,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand