./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bd549a-60ac-4826-94bc-b13e2dc9e961/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bd549a-60ac-4826-94bc-b13e2dc9e961/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bd549a-60ac-4826-94bc-b13e2dc9e961/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bd549a-60ac-4826-94bc-b13e2dc9e961/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bd549a-60ac-4826-94bc-b13e2dc9e961/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bd549a-60ac-4826-94bc-b13e2dc9e961/bin/uautomizer-verify-aQ6SnzHsRB --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 8dbd267b0e0821e8d358e8d234024d8e484ea32431972ed8b70b87052179a50c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:22:02,418 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:22:02,556 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bd549a-60ac-4826-94bc-b13e2dc9e961/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 04:22:02,570 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:22:02,571 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:22:02,608 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:22:02,609 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:22:02,610 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:22:02,610 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:22:02,610 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:22:02,611 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:22:02,611 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:22:02,611 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:22:02,611 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:22:02,612 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:22:02,612 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:22:02,612 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:22:02,614 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:22:02,614 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:22:02,615 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:22:02,615 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:22:02,615 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:22:02,615 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:22:02,615 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:22:02,615 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 04:22:02,615 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 04:22:02,615 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:22:02,616 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:22:02,616 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:22:02,616 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:22:02,616 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:22:02,616 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:22:02,616 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:22:02,616 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:22:02,617 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:22:02,617 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:22:02,617 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:22:02,617 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:22:02,617 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:22:02,617 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:22:02,620 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:22:02,621 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:22:02,621 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:22:02,621 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:22:02,621 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:22:02,621 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:22:02,621 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:22:02,622 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:22:02,622 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:22:02,622 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:22:02,622 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_22bd549a-60ac-4826-94bc-b13e2dc9e961/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 8dbd267b0e0821e8d358e8d234024d8e484ea32431972ed8b70b87052179a50c [2024-11-28 04:22:02,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:22:03,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:22:03,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:22:03,013 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:22:03,013 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:22:03,015 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bd549a-60ac-4826-94bc-b13e2dc9e961/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c [2024-11-28 04:22:06,782 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bd549a-60ac-4826-94bc-b13e2dc9e961/bin/uautomizer-verify-aQ6SnzHsRB/data/417bf539c/03cefa0923584dbfa54b10c9ae57b215/FLAG0a55b8eaa [2024-11-28 04:22:07,179 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:22:07,181 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bd549a-60ac-4826-94bc-b13e2dc9e961/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c [2024-11-28 04:22:07,203 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bd549a-60ac-4826-94bc-b13e2dc9e961/bin/uautomizer-verify-aQ6SnzHsRB/data/417bf539c/03cefa0923584dbfa54b10c9ae57b215/FLAG0a55b8eaa [2024-11-28 04:22:07,228 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bd549a-60ac-4826-94bc-b13e2dc9e961/bin/uautomizer-verify-aQ6SnzHsRB/data/417bf539c/03cefa0923584dbfa54b10c9ae57b215 [2024-11-28 04:22:07,231 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:22:07,232 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:22:07,234 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:22:07,234 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:22:07,245 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:22:07,246 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:22:07" (1/1) ... [2024-11-28 04:22:07,248 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e84d77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:07, skipping insertion in model container [2024-11-28 04:22:07,248 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:22:07" (1/1) ... [2024-11-28 04:22:07,283 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:22:07,521 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:22:07,534 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:22:07,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:22:07,594 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:22:07,595 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:07 WrapperNode [2024-11-28 04:22:07,595 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:22:07,596 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:22:07,597 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:22:07,597 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:22:07,605 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:07" (1/1) ... [2024-11-28 04:22:07,623 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:07" (1/1) ... [2024-11-28 04:22:07,677 INFO L138 Inliner]: procedures = 26, calls = 68, calls flagged for inlining = 23, calls inlined = 29, statements flattened = 383 [2024-11-28 04:22:07,678 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:22:07,678 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:22:07,679 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:22:07,679 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:22:07,690 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:07" (1/1) ... [2024-11-28 04:22:07,691 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:07" (1/1) ... [2024-11-28 04:22:07,696 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:07" (1/1) ... [2024-11-28 04:22:07,721 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-28 04:22:07,721 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:07" (1/1) ... [2024-11-28 04:22:07,721 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:07" (1/1) ... [2024-11-28 04:22:07,751 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:07" (1/1) ... [2024-11-28 04:22:07,753 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:07" (1/1) ... [2024-11-28 04:22:07,764 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:07" (1/1) ... [2024-11-28 04:22:07,770 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:07" (1/1) ... [2024-11-28 04:22:07,772 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:07" (1/1) ... [2024-11-28 04:22:07,779 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:22:07,780 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:22:07,787 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:22:07,788 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:22:07,789 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:07" (1/1) ... [2024-11-28 04:22:07,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:22:07,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bd549a-60ac-4826-94bc-b13e2dc9e961/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:22:07,858 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bd549a-60ac-4826-94bc-b13e2dc9e961/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:22:07,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bd549a-60ac-4826-94bc-b13e2dc9e961/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:22:07,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:22:07,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:22:07,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:22:07,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:22:07,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:22:07,889 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 04:22:07,889 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 04:22:07,889 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 04:22:07,889 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 04:22:07,889 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-28 04:22:07,890 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-28 04:22:07,890 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-28 04:22:07,890 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-28 04:22:07,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:22:07,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:22:07,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-28 04:22:07,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-28 04:22:07,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 04:22:07,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:22:07,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:22:07,895 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 04:22:08,089 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:22:08,092 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:22:09,065 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 04:22:09,066 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:22:10,009 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:22:10,011 INFO L312 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-28 04:22:10,012 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:22:10 BoogieIcfgContainer [2024-11-28 04:22:10,012 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:22:10,015 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:22:10,015 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:22:10,021 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:22:10,021 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:22:07" (1/3) ... [2024-11-28 04:22:10,022 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4910b7e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:22:10, skipping insertion in model container [2024-11-28 04:22:10,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:22:07" (2/3) ... [2024-11-28 04:22:10,023 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4910b7e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:22:10, skipping insertion in model container [2024-11-28 04:22:10,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:22:10" (3/3) ... [2024-11-28 04:22:10,026 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series.wvr.c [2024-11-28 04:22:10,046 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:22:10,049 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-buffer-series.wvr.c that has 5 procedures, 82 locations, 1 initial locations, 7 loop locations, and 32 error locations. [2024-11-28 04:22:10,049 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 04:22:10,326 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-28 04:22:10,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 88 transitions, 204 flow [2024-11-28 04:22:10,485 INFO L124 PetriNetUnfolderBase]: 7/84 cut-off events. [2024-11-28 04:22:10,488 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-28 04:22:10,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 84 events. 7/84 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 292 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2024-11-28 04:22:10,494 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 88 transitions, 204 flow [2024-11-28 04:22:10,500 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 82 transitions, 185 flow [2024-11-28 04:22:10,511 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:22:10,531 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;@4f5e899c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:22:10,532 INFO L334 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2024-11-28 04:22:10,539 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:22:10,539 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-28 04:22:10,539 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 04:22:10,540 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:22:10,540 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 04:22:10,541 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-28 04:22:10,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:22:10,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1246305, now seen corresponding path program 1 times [2024-11-28 04:22:10,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:22:10,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148651804] [2024-11-28 04:22:10,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:22:10,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:22:10,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:22:10,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:22:10,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:22:10,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148651804] [2024-11-28 04:22:10,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148651804] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:22:10,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:22:10,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:22:10,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758030109] [2024-11-28 04:22:10,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:22:10,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:22:11,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:22:11,039 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:22:11,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:22:11,095 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 88 [2024-11-28 04:22:11,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 82 transitions, 185 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:22:11,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:22:11,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 88 [2024-11-28 04:22:11,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:22:18,769 INFO L124 PetriNetUnfolderBase]: 24043/32480 cut-off events. [2024-11-28 04:22:18,770 INFO L125 PetriNetUnfolderBase]: For 793/793 co-relation queries the response was YES. [2024-11-28 04:22:18,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64294 conditions, 32480 events. 24043/32480 cut-off events. For 793/793 co-relation queries the response was YES. Maximal size of possible extension queue 3390. Compared 231594 event pairs, 18972 based on Foata normal form. 3/16736 useless extension candidates. Maximal degree in co-relation 59710. Up to 30511 conditions per place. [2024-11-28 04:22:19,102 INFO L140 encePairwiseOnDemand]: 61/88 looper letters, 51 selfloop transitions, 10 changer transitions 0/80 dead transitions. [2024-11-28 04:22:19,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 80 transitions, 303 flow [2024-11-28 04:22:19,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:22:19,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:22:19,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 170 transitions. [2024-11-28 04:22:19,123 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48295454545454547 [2024-11-28 04:22:19,126 INFO L175 Difference]: Start difference. First operand has 88 places, 82 transitions, 185 flow. Second operand 4 states and 170 transitions. [2024-11-28 04:22:19,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 80 transitions, 303 flow [2024-11-28 04:22:19,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 80 transitions, 290 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-28 04:22:19,187 INFO L231 Difference]: Finished difference. Result has 76 places, 80 transitions, 238 flow [2024-11-28 04:22:19,192 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=238, PETRI_PLACES=76, PETRI_TRANSITIONS=80} [2024-11-28 04:22:19,197 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, -12 predicate places. [2024-11-28 04:22:19,198 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 80 transitions, 238 flow [2024-11-28 04:22:19,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:22:19,198 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:22:19,198 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-28 04:22:19,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:22:19,199 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-28 04:22:19,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:22:19,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1524768845, now seen corresponding path program 1 times [2024-11-28 04:22:19,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:22:19,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177042496] [2024-11-28 04:22:19,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:22:19,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:22:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:22:19,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:22:19,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:22:19,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177042496] [2024-11-28 04:22:19,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177042496] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:22:19,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672531004] [2024-11-28 04:22:19,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:22:19,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:22:19,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bd549a-60ac-4826-94bc-b13e2dc9e961/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:22:19,403 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bd549a-60ac-4826-94bc-b13e2dc9e961/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:22:19,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bd549a-60ac-4826-94bc-b13e2dc9e961/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:22:19,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:22:19,556 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:22:19,561 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:22:19,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:22:19,635 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:22:19,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672531004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:22:19,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:22:19,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:22:19,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639458666] [2024-11-28 04:22:19,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:22:19,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:22:19,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:22:19,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:22:19,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:22:19,685 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 88 [2024-11-28 04:22:19,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 80 transitions, 238 flow. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:22:19,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:22:19,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 88 [2024-11-28 04:22:19,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:22:25,339 INFO L124 PetriNetUnfolderBase]: 24043/32477 cut-off events. [2024-11-28 04:22:25,340 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-28 04:22:25,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63750 conditions, 32477 events. 24043/32477 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 3409. Compared 231663 event pairs, 18972 based on Foata normal form. 3/16738 useless extension candidates. Maximal degree in co-relation 63677. Up to 30496 conditions per place. [2024-11-28 04:22:25,738 INFO L140 encePairwiseOnDemand]: 75/88 looper letters, 41 selfloop transitions, 17 changer transitions 0/77 dead transitions. [2024-11-28 04:22:25,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 77 transitions, 342 flow [2024-11-28 04:22:25,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:22:25,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 04:22:25,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 199 transitions. [2024-11-28 04:22:25,743 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3768939393939394 [2024-11-28 04:22:25,744 INFO L175 Difference]: Start difference. First operand has 76 places, 80 transitions, 238 flow. Second operand 6 states and 199 transitions. [2024-11-28 04:22:25,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 77 transitions, 342 flow [2024-11-28 04:22:25,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 77 transitions, 342 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 04:22:25,751 INFO L231 Difference]: Finished difference. Result has 78 places, 77 transitions, 260 flow [2024-11-28 04:22:25,752 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=260, PETRI_PLACES=78, PETRI_TRANSITIONS=77} [2024-11-28 04:22:25,754 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, -10 predicate places. [2024-11-28 04:22:25,754 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 77 transitions, 260 flow [2024-11-28 04:22:25,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:22:25,755 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:22:25,755 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-28 04:22:25,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bd549a-60ac-4826-94bc-b13e2dc9e961/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 04:22:25,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bd549a-60ac-4826-94bc-b13e2dc9e961/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:22:25,960 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-28 04:22:25,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:22:25,961 INFO L85 PathProgramCache]: Analyzing trace with hash -23192665, now seen corresponding path program 1 times [2024-11-28 04:22:25,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:22:25,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266990247] [2024-11-28 04:22:25,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:22:25,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:22:26,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:22:26,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:22:26,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:22:26,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266990247] [2024-11-28 04:22:26,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266990247] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:22:26,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990142543] [2024-11-28 04:22:26,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:22:26,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:22:26,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bd549a-60ac-4826-94bc-b13e2dc9e961/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:22:26,195 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bd549a-60ac-4826-94bc-b13e2dc9e961/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:22:26,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bd549a-60ac-4826-94bc-b13e2dc9e961/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:22:26,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:22:26,356 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:22:26,357 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:22:26,401 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:22:26,401 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:22:26,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:22:26,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990142543] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:22:26,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:22:26,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-28 04:22:26,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910334749] [2024-11-28 04:22:26,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:22:26,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:22:26,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:22:26,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:22:26,475 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:22:26,533 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 88 [2024-11-28 04:22:26,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 77 transitions, 260 flow. Second operand has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:22:26,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:22:26,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 88 [2024-11-28 04:22:26,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:22:31,699 INFO L124 PetriNetUnfolderBase]: 24052/32513 cut-off events. [2024-11-28 04:22:31,699 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2024-11-28 04:22:31,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63891 conditions, 32513 events. 24052/32513 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 3409. Compared 231791 event pairs, 18972 based on Foata normal form. 9/16780 useless extension candidates. Maximal degree in co-relation 63679. Up to 30511 conditions per place. [2024-11-28 04:22:31,869 INFO L140 encePairwiseOnDemand]: 75/88 looper letters, 48 selfloop transitions, 37 changer transitions 0/104 dead transitions. [2024-11-28 04:22:31,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 104 transitions, 604 flow [2024-11-28 04:22:31,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:22:31,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 04:22:31,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 324 transitions. [2024-11-28 04:22:31,873 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36818181818181817 [2024-11-28 04:22:31,873 INFO L175 Difference]: Start difference. First operand has 78 places, 77 transitions, 260 flow. Second operand 10 states and 324 transitions. [2024-11-28 04:22:31,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 104 transitions, 604 flow [2024-11-28 04:22:31,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 104 transitions, 521 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-28 04:22:31,879 INFO L231 Difference]: Finished difference. Result has 85 places, 104 transitions, 475 flow [2024-11-28 04:22:31,879 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=475, PETRI_PLACES=85, PETRI_TRANSITIONS=104} [2024-11-28 04:22:31,880 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, -3 predicate places. [2024-11-28 04:22:31,880 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 104 transitions, 475 flow [2024-11-28 04:22:31,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:22:31,881 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:22:31,881 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:22:31,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bd549a-60ac-4826-94bc-b13e2dc9e961/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:22:32,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22bd549a-60ac-4826-94bc-b13e2dc9e961/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:22:32,082 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-28 04:22:32,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:22:32,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1089690281, now seen corresponding path program 1 times [2024-11-28 04:22:32,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:22:32,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350854786] [2024-11-28 04:22:32,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:22:32,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:22:32,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:22:32,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:22:32,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:22:32,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350854786] [2024-11-28 04:22:32,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350854786] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:22:32,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:22:32,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 04:22:32,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840390355] [2024-11-28 04:22:32,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:22:32,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:22:32,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:22:32,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:22:32,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:22:32,329 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 88 [2024-11-28 04:22:32,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 104 transitions, 475 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:22:32,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:22:32,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 88 [2024-11-28 04:22:32,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:22:38,007 INFO L124 PetriNetUnfolderBase]: 31509/43660 cut-off events. [2024-11-28 04:22:38,007 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2024-11-28 04:22:38,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85419 conditions, 43660 events. 31509/43660 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 3813. Compared 332905 event pairs, 9618 based on Foata normal form. 0/24357 useless extension candidates. Maximal degree in co-relation 85321. Up to 25909 conditions per place. [2024-11-28 04:22:38,266 INFO L140 encePairwiseOnDemand]: 84/88 looper letters, 113 selfloop transitions, 2 changer transitions 0/137 dead transitions. [2024-11-28 04:22:38,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 137 transitions, 778 flow [2024-11-28 04:22:38,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:22:38,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:22:38,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 168 transitions. [2024-11-28 04:22:38,268 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2024-11-28 04:22:38,268 INFO L175 Difference]: Start difference. First operand has 85 places, 104 transitions, 475 flow. Second operand 3 states and 168 transitions. [2024-11-28 04:22:38,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 137 transitions, 778 flow [2024-11-28 04:22:38,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 137 transitions, 741 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-28 04:22:38,274 INFO L231 Difference]: Finished difference. Result has 86 places, 105 transitions, 452 flow [2024-11-28 04:22:38,274 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=452, PETRI_PLACES=86, PETRI_TRANSITIONS=105} [2024-11-28 04:22:38,275 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, -2 predicate places. [2024-11-28 04:22:38,276 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 105 transitions, 452 flow [2024-11-28 04:22:38,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:22:38,276 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:22:38,276 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:22:38,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:22:38,277 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-28 04:22:38,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:22:38,277 INFO L85 PathProgramCache]: Analyzing trace with hash -372535154, now seen corresponding path program 1 times [2024-11-28 04:22:38,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:22:38,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486030445] [2024-11-28 04:22:38,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:22:38,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:22:38,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:22:38,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:22:38,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:22:38,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486030445] [2024-11-28 04:22:38,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486030445] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:22:38,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:22:38,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:22:38,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091835762] [2024-11-28 04:22:38,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:22:38,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:22:38,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:22:38,507 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:22:38,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:22:38,507 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 88 [2024-11-28 04:22:38,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 105 transitions, 452 flow. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:22:38,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:22:38,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 88 [2024-11-28 04:22:38,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:22:44,004 INFO L124 PetriNetUnfolderBase]: 33685/45979 cut-off events. [2024-11-28 04:22:44,004 INFO L125 PetriNetUnfolderBase]: For 2268/2268 co-relation queries the response was YES. [2024-11-28 04:22:44,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96665 conditions, 45979 events. 33685/45979 cut-off events. For 2268/2268 co-relation queries the response was YES. Maximal size of possible extension queue 3656. Compared 346182 event pairs, 28448 based on Foata normal form. 522/25232 useless extension candidates. Maximal degree in co-relation 96542. Up to 40670 conditions per place. [2024-11-28 04:22:44,222 INFO L140 encePairwiseOnDemand]: 75/88 looper letters, 114 selfloop transitions, 9 changer transitions 1/146 dead transitions. [2024-11-28 04:22:44,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 146 transitions, 862 flow [2024-11-28 04:22:44,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:22:44,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 04:22:44,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 233 transitions. [2024-11-28 04:22:44,224 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5295454545454545 [2024-11-28 04:22:44,224 INFO L175 Difference]: Start difference. First operand has 86 places, 105 transitions, 452 flow. Second operand 5 states and 233 transitions. [2024-11-28 04:22:44,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 146 transitions, 862 flow [2024-11-28 04:22:44,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 146 transitions, 859 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:22:44,235 INFO L231 Difference]: Finished difference. Result has 91 places, 107 transitions, 505 flow [2024-11-28 04:22:44,236 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=505, PETRI_PLACES=91, PETRI_TRANSITIONS=107} [2024-11-28 04:22:44,240 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 3 predicate places. [2024-11-28 04:22:44,240 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 107 transitions, 505 flow [2024-11-28 04:22:44,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:22:44,240 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:22:44,240 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:22:44,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:22:44,241 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-28 04:22:44,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:22:44,241 INFO L85 PathProgramCache]: Analyzing trace with hash -2140531176, now seen corresponding path program 1 times [2024-11-28 04:22:44,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:22:44,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358018504] [2024-11-28 04:22:44,242 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:22:44,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:22:44,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:22:44,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:22:44,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:22:44,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358018504] [2024-11-28 04:22:44,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358018504] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:22:44,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:22:44,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 04:22:44,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851176214] [2024-11-28 04:22:44,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:22:44,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:22:44,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:22:44,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:22:44,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:22:44,401 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 88 [2024-11-28 04:22:44,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 107 transitions, 505 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:22:44,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:22:44,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 88 [2024-11-28 04:22:44,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand