./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_447936ec-b7c1-495a-8c30-b6607e9e04cd/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_447936ec-b7c1-495a-8c30-b6607e9e04cd/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_447936ec-b7c1-495a-8c30-b6607e9e04cd/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_447936ec-b7c1-495a-8c30-b6607e9e04cd/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_447936ec-b7c1-495a-8c30-b6607e9e04cd/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_447936ec-b7c1-495a-8c30-b6607e9e04cd/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 fdebcc32a5907a5601109dc3fb4ac7750aa88ce6953c83cffe48f47befc15286 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:14:41,827 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:14:41,936 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_447936ec-b7c1-495a-8c30-b6607e9e04cd/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-31 22:14:41,941 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:14:41,941 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:14:41,987 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:14:41,988 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:14:41,988 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:14:41,989 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:14:41,989 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:14:41,989 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:14:41,990 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:14:41,991 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:14:41,994 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:14:41,995 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:14:41,998 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:14:41,998 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:14:41,999 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:14:41,999 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:14:42,003 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:14:42,003 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:14:42,005 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:14:42,006 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:14:42,006 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:14:42,006 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:14:42,007 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-31 22:14:42,007 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:14:42,007 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:14:42,007 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:14:42,008 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:14:42,008 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:14:42,008 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:14:42,008 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:14:42,009 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:14:42,009 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:14:42,010 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:14:42,010 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:14:42,010 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:14:42,011 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:14:42,011 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:14:42,011 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:14:42,012 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:14:42,012 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:14:42,012 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:14:42,013 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_447936ec-b7c1-495a-8c30-b6607e9e04cd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_447936ec-b7c1-495a-8c30-b6607e9e04cd/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fdebcc32a5907a5601109dc3fb4ac7750aa88ce6953c83cffe48f47befc15286 [2024-10-31 22:14:42,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:14:42,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:14:42,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:14:42,372 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:14:42,374 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:14:42,375 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_447936ec-b7c1-495a-8c30-b6607e9e04cd/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt3.wvr.c Unable to find full path for "g++" [2024-10-31 22:14:44,613 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:14:44,816 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:14:44,817 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_447936ec-b7c1-495a-8c30-b6607e9e04cd/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt3.wvr.c [2024-10-31 22:14:44,825 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_447936ec-b7c1-495a-8c30-b6607e9e04cd/bin/uautomizer-verify-4GaUIPS5ZU/data/60c3ea663/ce82b0f97d9f41f6a2be1eea8989451f/FLAGb2011421f [2024-10-31 22:14:44,841 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_447936ec-b7c1-495a-8c30-b6607e9e04cd/bin/uautomizer-verify-4GaUIPS5ZU/data/60c3ea663/ce82b0f97d9f41f6a2be1eea8989451f [2024-10-31 22:14:44,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:14:44,846 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:14:44,847 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:14:44,847 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:14:44,854 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:14:44,854 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:14:44" (1/1) ... [2024-10-31 22:14:44,856 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e300aee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:44, skipping insertion in model container [2024-10-31 22:14:44,856 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:14:44" (1/1) ... [2024-10-31 22:14:44,885 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:14:45,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:14:45,146 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:14:45,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:14:45,222 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:14:45,223 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:45 WrapperNode [2024-10-31 22:14:45,223 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:14:45,224 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:14:45,225 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:14:45,225 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:14:45,234 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:45" (1/1) ... [2024-10-31 22:14:45,251 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:45" (1/1) ... [2024-10-31 22:14:45,299 INFO L138 Inliner]: procedures = 25, calls = 60, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 359 [2024-10-31 22:14:45,300 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:14:45,301 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:14:45,301 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:14:45,301 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:14:45,320 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:45" (1/1) ... [2024-10-31 22:14:45,321 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:45" (1/1) ... [2024-10-31 22:14:45,325 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:45" (1/1) ... [2024-10-31 22:14:45,349 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-31 22:14:45,350 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:45" (1/1) ... [2024-10-31 22:14:45,350 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:45" (1/1) ... [2024-10-31 22:14:45,363 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:45" (1/1) ... [2024-10-31 22:14:45,369 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:45" (1/1) ... [2024-10-31 22:14:45,372 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:45" (1/1) ... [2024-10-31 22:14:45,374 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:45" (1/1) ... [2024-10-31 22:14:45,379 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:14:45,380 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:14:45,380 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:14:45,380 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:14:45,381 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:45" (1/1) ... [2024-10-31 22:14:45,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:14:45,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_447936ec-b7c1-495a-8c30-b6607e9e04cd/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:14:45,434 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_447936ec-b7c1-495a-8c30-b6607e9e04cd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:14:45,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_447936ec-b7c1-495a-8c30-b6607e9e04cd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:14:45,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:14:45,470 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-31 22:14:45,470 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-31 22:14:45,470 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-31 22:14:45,470 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-31 22:14:45,470 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-31 22:14:45,470 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-31 22:14:45,471 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-31 22:14:45,471 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-31 22:14:45,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:14:45,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:14:45,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:14:45,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:14:45,472 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:14:45,472 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:14:45,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-31 22:14:45,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:14:45,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:14:45,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:14:45,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:14:45,476 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 22:14:45,659 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:14:45,676 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:14:46,396 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:14:46,397 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:14:47,282 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:14:47,282 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-31 22:14:47,283 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:14:47 BoogieIcfgContainer [2024-10-31 22:14:47,283 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:14:47,286 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:14:47,286 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:14:47,290 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:14:47,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:14:44" (1/3) ... [2024-10-31 22:14:47,291 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77e6b934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:14:47, skipping insertion in model container [2024-10-31 22:14:47,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:14:45" (2/3) ... [2024-10-31 22:14:47,292 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77e6b934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:14:47, skipping insertion in model container [2024-10-31 22:14:47,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:14:47" (3/3) ... [2024-10-31 22:14:47,295 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt3.wvr.c [2024-10-31 22:14:47,317 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:14:47,318 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2024-10-31 22:14:47,318 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:14:47,525 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-31 22:14:47,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 82 transitions, 192 flow [2024-10-31 22:14:47,671 INFO L124 PetriNetUnfolderBase]: 6/78 cut-off events. [2024-10-31 22:14:47,672 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-31 22:14:47,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 78 events. 6/78 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 265 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2024-10-31 22:14:47,678 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 82 transitions, 192 flow [2024-10-31 22:14:47,683 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 76 transitions, 173 flow [2024-10-31 22:14:47,698 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:14:47,706 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;@345158b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:14:47,706 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-10-31 22:14:47,711 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:14:47,711 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-31 22:14:47,711 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:14:47,711 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:14:47,712 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-31 22:14:47,713 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-31 22:14:47,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:14:47,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1093182, now seen corresponding path program 1 times [2024-10-31 22:14:47,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:14:47,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935172449] [2024-10-31 22:14:47,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:14:47,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:14:47,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:14:48,184 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 22:14:48,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:14:48,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935172449] [2024-10-31 22:14:48,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935172449] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:14:48,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:14:48,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:14:48,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904732678] [2024-10-31 22:14:48,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:14:48,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:14:48,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:14:48,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:14:48,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:14:48,273 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2024-10-31 22:14:48,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 76 transitions, 173 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 22:14:48,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:14:48,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2024-10-31 22:14:48,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:02,028 INFO L124 PetriNetUnfolderBase]: 50181/66541 cut-off events. [2024-10-31 22:15:02,029 INFO L125 PetriNetUnfolderBase]: For 1336/1336 co-relation queries the response was YES. [2024-10-31 22:15:02,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130830 conditions, 66541 events. 50181/66541 cut-off events. For 1336/1336 co-relation queries the response was YES. Maximal size of possible extension queue 6940. Compared 481269 event pairs, 36482 based on Foata normal form. 2/28923 useless extension candidates. Maximal degree in co-relation 124248. Up to 62109 conditions per place. [2024-10-31 22:15:02,605 INFO L140 encePairwiseOnDemand]: 65/82 looper letters, 51 selfloop transitions, 7 changer transitions 0/76 dead transitions. [2024-10-31 22:15:02,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 76 transitions, 289 flow [2024-10-31 22:15:02,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:15:02,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:15:02,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2024-10-31 22:15:02,623 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47560975609756095 [2024-10-31 22:15:02,626 INFO L175 Difference]: Start difference. First operand has 83 places, 76 transitions, 173 flow. Second operand 4 states and 156 transitions. [2024-10-31 22:15:02,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 76 transitions, 289 flow [2024-10-31 22:15:03,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 76 transitions, 276 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-10-31 22:15:03,485 INFO L231 Difference]: Finished difference. Result has 76 places, 76 transitions, 208 flow [2024-10-31 22:15:03,492 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=208, PETRI_PLACES=76, PETRI_TRANSITIONS=76} [2024-10-31 22:15:03,501 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -7 predicate places. [2024-10-31 22:15:03,501 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 76 transitions, 208 flow [2024-10-31 22:15:03,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 22:15:03,502 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:03,502 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-31 22:15:03,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:15:03,503 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-31 22:15:03,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:03,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1791640043, now seen corresponding path program 1 times [2024-10-31 22:15:03,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:03,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604147707] [2024-10-31 22:15:03,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:03,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:03,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:03,698 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 22:15:03,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:03,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604147707] [2024-10-31 22:15:03,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604147707] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:15:03,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540182724] [2024-10-31 22:15:03,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:03,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:15:03,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_447936ec-b7c1-495a-8c30-b6607e9e04cd/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:15:03,702 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_447936ec-b7c1-495a-8c30-b6607e9e04cd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:15:03,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_447936ec-b7c1-495a-8c30-b6607e9e04cd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:15:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:03,851 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:15:03,856 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:15:03,915 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 22:15:03,916 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:15:03,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540182724] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:03,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:15:03,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-31 22:15:03,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308574049] [2024-10-31 22:15:03,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:03,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:15:03,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:03,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:15:03,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:15:03,949 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2024-10-31 22:15:03,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 76 transitions, 208 flow. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 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 22:15:03,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:03,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2024-10-31 22:15:03,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:13,712 INFO L124 PetriNetUnfolderBase]: 50181/66539 cut-off events. [2024-10-31 22:15:13,712 INFO L125 PetriNetUnfolderBase]: For 201/201 co-relation queries the response was YES. [2024-10-31 22:15:13,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130046 conditions, 66539 events. 50181/66539 cut-off events. For 201/201 co-relation queries the response was YES. Maximal size of possible extension queue 6940. Compared 481029 event pairs, 36482 based on Foata normal form. 2/28924 useless extension candidates. Maximal degree in co-relation 129996. Up to 62099 conditions per place. [2024-10-31 22:15:14,145 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 44 selfloop transitions, 12 changer transitions 0/74 dead transitions. [2024-10-31 22:15:14,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 74 transitions, 312 flow [2024-10-31 22:15:14,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:15:14,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:15:14,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2024-10-31 22:15:14,148 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3861788617886179 [2024-10-31 22:15:14,148 INFO L175 Difference]: Start difference. First operand has 76 places, 76 transitions, 208 flow. Second operand 6 states and 190 transitions. [2024-10-31 22:15:14,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 74 transitions, 312 flow [2024-10-31 22:15:14,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 74 transitions, 312 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:15:14,151 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 224 flow [2024-10-31 22:15:14,152 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=224, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2024-10-31 22:15:14,152 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -4 predicate places. [2024-10-31 22:15:14,153 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 224 flow [2024-10-31 22:15:14,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 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 22:15:14,153 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:14,154 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-31 22:15:14,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_447936ec-b7c1-495a-8c30-b6607e9e04cd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:15:14,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_447936ec-b7c1-495a-8c30-b6607e9e04cd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:15:14,356 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-10-31 22:15:14,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:14,358 INFO L85 PathProgramCache]: Analyzing trace with hash 293734636, now seen corresponding path program 1 times [2024-10-31 22:15:14,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:14,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751941597] [2024-10-31 22:15:14,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:14,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:14,537 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 22:15:14,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:14,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751941597] [2024-10-31 22:15:14,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751941597] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:15:14,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405029640] [2024-10-31 22:15:14,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:14,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:15:14,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_447936ec-b7c1-495a-8c30-b6607e9e04cd/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:15:14,541 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_447936ec-b7c1-495a-8c30-b6607e9e04cd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:15:14,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_447936ec-b7c1-495a-8c30-b6607e9e04cd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:15:14,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:14,668 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:15:14,670 INFO L278 TraceCheckSpWp]: Computing forward predicates...