./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-min-max-inc.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_c92ccde9-c72e-4952-bab3-d6ef53d36399/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c92ccde9-c72e-4952-bab3-d6ef53d36399/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_c92ccde9-c72e-4952-bab3-d6ef53d36399/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c92ccde9-c72e-4952-bab3-d6ef53d36399/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c92ccde9-c72e-4952-bab3-d6ef53d36399/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_c92ccde9-c72e-4952-bab3-d6ef53d36399/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 341ac5a9697f243416924cef7ae19a5e9bc693a5982154ab196fb2faacf237d5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:47:01,934 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:47:02,034 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c92ccde9-c72e-4952-bab3-d6ef53d36399/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 04:47:02,043 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:47:02,047 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:47:02,084 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:47:02,085 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:47:02,085 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:47:02,086 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:47:02,086 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:47:02,087 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:47:02,087 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:47:02,088 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:47:02,088 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:47:02,088 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:47:02,088 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:47:02,088 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:47:02,089 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:47:02,090 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:47:02,090 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:47:02,090 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:47:02,090 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:47:02,090 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:47:02,090 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:47:02,090 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 04:47:02,090 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 04:47:02,091 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:47:02,091 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:47:02,091 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:47:02,091 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:47:02,091 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:47:02,091 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:47:02,091 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:47:02,091 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:47:02,092 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:47:02,092 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:47:02,093 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:47:02,093 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:47:02,093 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:47:02,093 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:47:02,093 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:47:02,093 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:47:02,094 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:47:02,094 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:47:02,094 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:47:02,094 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:47:02,094 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:47:02,094 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:47:02,094 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:47:02,094 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:47:02,095 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_c92ccde9-c72e-4952-bab3-d6ef53d36399/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 -> 341ac5a9697f243416924cef7ae19a5e9bc693a5982154ab196fb2faacf237d5 [2024-11-28 04:47:02,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:47:02,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:47:02,434 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:47:02,435 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:47:02,436 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:47:02,437 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c92ccde9-c72e-4952-bab3-d6ef53d36399/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c [2024-11-28 04:47:05,281 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c92ccde9-c72e-4952-bab3-d6ef53d36399/bin/uautomizer-verify-aQ6SnzHsRB/data/64b1353d2/d3dc5409b50743ef8f047440516a7412/FLAG0abd83c20 [2024-11-28 04:47:05,571 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:47:05,571 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c92ccde9-c72e-4952-bab3-d6ef53d36399/sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c [2024-11-28 04:47:05,584 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c92ccde9-c72e-4952-bab3-d6ef53d36399/bin/uautomizer-verify-aQ6SnzHsRB/data/64b1353d2/d3dc5409b50743ef8f047440516a7412/FLAG0abd83c20 [2024-11-28 04:47:05,606 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c92ccde9-c72e-4952-bab3-d6ef53d36399/bin/uautomizer-verify-aQ6SnzHsRB/data/64b1353d2/d3dc5409b50743ef8f047440516a7412 [2024-11-28 04:47:05,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:47:05,612 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:47:05,614 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:47:05,614 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:47:05,618 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:47:05,619 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:47:05" (1/1) ... [2024-11-28 04:47:05,622 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cc7893c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:05, skipping insertion in model container [2024-11-28 04:47:05,622 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:47:05" (1/1) ... [2024-11-28 04:47:05,644 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:47:05,838 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:47:05,847 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:47:05,882 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:47:05,897 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:47:05,897 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:05 WrapperNode [2024-11-28 04:47:05,898 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:47:05,899 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:47:05,899 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:47:05,899 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:47:05,908 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:05" (1/1) ... [2024-11-28 04:47:05,915 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:05" (1/1) ... [2024-11-28 04:47:05,935 INFO L138 Inliner]: procedures = 23, calls = 26, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 124 [2024-11-28 04:47:05,935 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:47:05,936 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:47:05,936 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:47:05,936 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:47:05,947 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:05" (1/1) ... [2024-11-28 04:47:05,947 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:05" (1/1) ... [2024-11-28 04:47:05,950 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:05" (1/1) ... [2024-11-28 04:47:05,965 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 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]. [2024-11-28 04:47:05,965 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:05" (1/1) ... [2024-11-28 04:47:05,965 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:05" (1/1) ... [2024-11-28 04:47:05,972 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:05" (1/1) ... [2024-11-28 04:47:05,973 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:05" (1/1) ... [2024-11-28 04:47:05,977 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:05" (1/1) ... [2024-11-28 04:47:05,978 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:05" (1/1) ... [2024-11-28 04:47:05,979 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:05" (1/1) ... [2024-11-28 04:47:05,982 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:47:05,983 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:47:05,983 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:47:05,983 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:47:05,984 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:05" (1/1) ... [2024-11-28 04:47:05,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:47:06,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c92ccde9-c72e-4952-bab3-d6ef53d36399/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:47:06,028 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c92ccde9-c72e-4952-bab3-d6ef53d36399/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:47:06,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c92ccde9-c72e-4952-bab3-d6ef53d36399/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:47:06,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:47:06,060 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 04:47:06,060 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 04:47:06,060 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 04:47:06,061 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 04:47:06,061 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-28 04:47:06,061 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-28 04:47:06,061 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-28 04:47:06,061 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-28 04:47:06,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:47:06,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:47:06,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:47:06,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:47:06,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 04:47:06,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:47:06,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:47:06,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:47:06,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:47:06,067 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 04:47:06,210 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:47:06,212 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:47:06,648 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 04:47:06,648 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:47:06,909 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:47:06,909 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-28 04:47:06,911 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:47:06 BoogieIcfgContainer [2024-11-28 04:47:06,911 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:47:06,914 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:47:06,914 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:47:06,919 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:47:06,919 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:47:05" (1/3) ... [2024-11-28 04:47:06,919 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cbc5e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:47:06, skipping insertion in model container [2024-11-28 04:47:06,919 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:47:05" (2/3) ... [2024-11-28 04:47:06,920 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cbc5e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:47:06, skipping insertion in model container [2024-11-28 04:47:06,920 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:47:06" (3/3) ... [2024-11-28 04:47:06,921 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc.wvr.c [2024-11-28 04:47:06,936 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:47:06,937 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-min-max-inc.wvr.c that has 5 procedures, 78 locations, 1 initial locations, 4 loop locations, and 12 error locations. [2024-11-28 04:47:06,937 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 04:47:07,012 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-28 04:47:07,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 84 transitions, 196 flow [2024-11-28 04:47:07,118 INFO L124 PetriNetUnfolderBase]: 7/80 cut-off events. [2024-11-28 04:47:07,120 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-28 04:47:07,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 80 events. 7/80 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 236 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2024-11-28 04:47:07,124 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 84 transitions, 196 flow [2024-11-28 04:47:07,129 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 78 transitions, 177 flow [2024-11-28 04:47:07,143 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:47:07,160 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;@13753cbc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:47:07,160 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-11-28 04:47:07,166 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:47:07,166 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-11-28 04:47:07,167 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 04:47:07,167 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:47:07,167 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 04:47:07,168 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-28 04:47:07,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:07,175 INFO L85 PathProgramCache]: Analyzing trace with hash 506927053, now seen corresponding path program 1 times [2024-11-28 04:47:07,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:07,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693912718] [2024-11-28 04:47:07,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:07,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:07,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:07,460 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 04:47:07,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:07,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693912718] [2024-11-28 04:47:07,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693912718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:47:07,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:47:07,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:47:07,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975048669] [2024-11-28 04:47:07,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:47:07,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:47:07,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:47:07,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:47:07,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:47:07,517 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2024-11-28 04:47:07,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 78 transitions, 177 flow. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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 04:47:07,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:47:07,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2024-11-28 04:47:07,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:47:11,787 INFO L124 PetriNetUnfolderBase]: 17677/29142 cut-off events. [2024-11-28 04:47:11,788 INFO L125 PetriNetUnfolderBase]: For 1185/1185 co-relation queries the response was YES. [2024-11-28 04:47:11,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51996 conditions, 29142 events. 17677/29142 cut-off events. For 1185/1185 co-relation queries the response was YES. Maximal size of possible extension queue 1447. Compared 246172 event pairs, 12761 based on Foata normal form. 1/25199 useless extension candidates. Maximal degree in co-relation 49383. Up to 21575 conditions per place. [2024-11-28 04:47:12,067 INFO L140 encePairwiseOnDemand]: 78/84 looper letters, 41 selfloop transitions, 4 changer transitions 0/81 dead transitions. [2024-11-28 04:47:12,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 81 transitions, 273 flow [2024-11-28 04:47:12,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:47:12,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:47:12,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 207 transitions. [2024-11-28 04:47:12,087 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6160714285714286 [2024-11-28 04:47:12,090 INFO L175 Difference]: Start difference. First operand has 84 places, 78 transitions, 177 flow. Second operand 4 states and 207 transitions. [2024-11-28 04:47:12,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 81 transitions, 273 flow [2024-11-28 04:47:12,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 81 transitions, 260 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-28 04:47:12,128 INFO L231 Difference]: Finished difference. Result has 82 places, 81 transitions, 193 flow [2024-11-28 04:47:12,133 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=193, PETRI_PLACES=82, PETRI_TRANSITIONS=81} [2024-11-28 04:47:12,138 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, -2 predicate places. [2024-11-28 04:47:12,140 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 81 transitions, 193 flow [2024-11-28 04:47:12,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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 04:47:12,140 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:47:12,141 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-28 04:47:12,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:47:12,142 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-28 04:47:12,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:12,143 INFO L85 PathProgramCache]: Analyzing trace with hash 759352251, now seen corresponding path program 1 times [2024-11-28 04:47:12,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:12,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475930306] [2024-11-28 04:47:12,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:12,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:12,390 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 04:47:12,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:12,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475930306] [2024-11-28 04:47:12,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475930306] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:47:12,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015754960] [2024-11-28 04:47:12,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:12,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:47:12,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c92ccde9-c72e-4952-bab3-d6ef53d36399/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:47:12,395 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c92ccde9-c72e-4952-bab3-d6ef53d36399/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:47:12,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c92ccde9-c72e-4952-bab3-d6ef53d36399/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:47:12,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:12,483 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:47:12,487 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:47:12,549 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 04:47:12,549 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:47:12,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015754960] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:47:12,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:47:12,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-28 04:47:12,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388367103] [2024-11-28 04:47:12,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:47:12,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:47:12,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:47:12,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:47:12,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:47:12,565 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2024-11-28 04:47:12,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 81 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 41.0) internal successors, (246), 6 states have internal predecessors, (246), 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 04:47:12,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:47:12,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2024-11-28 04:47:12,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:47:15,932 INFO L124 PetriNetUnfolderBase]: 17677/29141 cut-off events. [2024-11-28 04:47:15,933 INFO L125 PetriNetUnfolderBase]: For 229/229 co-relation queries the response was YES. [2024-11-28 04:47:16,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51671 conditions, 29141 events. 17677/29141 cut-off events. For 229/229 co-relation queries the response was YES. Maximal size of possible extension queue 1447. Compared 245827 event pairs, 12761 based on Foata normal form. 1/25199 useless extension candidates. Maximal degree in co-relation 51644. Up to 21570 conditions per place. [2024-11-28 04:47:16,165 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 37 selfloop transitions, 7 changer transitions 0/80 dead transitions. [2024-11-28 04:47:16,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 80 transitions, 277 flow [2024-11-28 04:47:16,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:47:16,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 04:47:16,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 285 transitions. [2024-11-28 04:47:16,171 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5654761904761905 [2024-11-28 04:47:16,171 INFO L175 Difference]: Start difference. First operand has 82 places, 81 transitions, 193 flow. Second operand 6 states and 285 transitions. [2024-11-28 04:47:16,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 80 transitions, 277 flow [2024-11-28 04:47:16,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 80 transitions, 274 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:47:16,176 INFO L231 Difference]: Finished difference. Result has 85 places, 80 transitions, 200 flow [2024-11-28 04:47:16,176 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=85, PETRI_TRANSITIONS=80} [2024-11-28 04:47:16,177 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 1 predicate places. [2024-11-28 04:47:16,177 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 80 transitions, 200 flow [2024-11-28 04:47:16,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 41.0) internal successors, (246), 6 states have internal predecessors, (246), 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 04:47:16,177 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:47:16,179 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-11-28 04:47:16,188 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c92ccde9-c72e-4952-bab3-d6ef53d36399/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:47:16,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c92ccde9-c72e-4952-bab3-d6ef53d36399/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:47:16,380 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-28 04:47:16,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:16,381 INFO L85 PathProgramCache]: Analyzing trace with hash 2065083835, now seen corresponding path program 1 times [2024-11-28 04:47:16,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:16,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676607830] [2024-11-28 04:47:16,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:16,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:16,567 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 04:47:16,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:16,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676607830] [2024-11-28 04:47:16,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676607830] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:47:16,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565449886] [2024-11-28 04:47:16,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:16,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:47:16,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c92ccde9-c72e-4952-bab3-d6ef53d36399/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:47:16,570 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c92ccde9-c72e-4952-bab3-d6ef53d36399/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:47:16,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c92ccde9-c72e-4952-bab3-d6ef53d36399/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:47:16,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:16,667 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:47:16,668 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:47:16,707 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 04:47:16,708 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:47:16,768 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 04:47:16,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565449886] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:47:16,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:47:16,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-28 04:47:16,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828066204] [2024-11-28 04:47:16,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:47:16,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:47:16,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:47:16,772 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:47:16,773 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:47:16,794 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2024-11-28 04:47:16,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 80 transitions, 200 flow. Second operand has 12 states, 12 states have (on average 41.166666666666664) internal successors, (494), 12 states have internal predecessors, (494), 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 04:47:16,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:47:16,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2024-11-28 04:47:16,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:47:19,228 INFO L124 PetriNetUnfolderBase]: 17680/29153 cut-off events. [2024-11-28 04:47:19,228 INFO L125 PetriNetUnfolderBase]: For 246/246 co-relation queries the response was YES. [2024-11-28 04:47:19,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51715 conditions, 29153 events. 17680/29153 cut-off events. For 246/246 co-relation queries the response was YES. Maximal size of possible extension queue 1451. Compared 246166 event pairs, 12761 based on Foata normal form. 3/25277 useless extension candidates. Maximal degree in co-relation 51645. Up to 21577 conditions per place. [2024-11-28 04:47:19,391 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 40 selfloop transitions, 13 changer transitions 0/89 dead transitions. [2024-11-28 04:47:19,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 89 transitions, 360 flow [2024-11-28 04:47:19,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:47:19,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 04:47:19,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 456 transitions. [2024-11-28 04:47:19,395 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-11-28 04:47:19,395 INFO L175 Difference]: Start difference. First operand has 85 places, 80 transitions, 200 flow. Second operand 10 states and 456 transitions. [2024-11-28 04:47:19,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 89 transitions, 360 flow [2024-11-28 04:47:19,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 89 transitions, 314 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-28 04:47:19,398 INFO L231 Difference]: Finished difference. Result has 92 places, 89 transitions, 252 flow [2024-11-28 04:47:19,398 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=252, PETRI_PLACES=92, PETRI_TRANSITIONS=89} [2024-11-28 04:47:19,399 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 8 predicate places. [2024-11-28 04:47:19,399 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 252 flow [2024-11-28 04:47:19,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 41.166666666666664) internal successors, (494), 12 states have internal predecessors, (494), 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 04:47:19,400 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:47:19,400 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:47:19,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c92ccde9-c72e-4952-bab3-d6ef53d36399/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:47:19,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c92ccde9-c72e-4952-bab3-d6ef53d36399/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:47:19,605 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-28 04:47:19,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:19,607 INFO L85 PathProgramCache]: Analyzing trace with hash 2116824067, now seen corresponding path program 1 times [2024-11-28 04:47:19,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:19,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349426882] [2024-11-28 04:47:19,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:19,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:19,792 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 04:47:19,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:19,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349426882] [2024-11-28 04:47:19,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349426882] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:47:19,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:47:19,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:47:19,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360070738] [2024-11-28 04:47:19,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:47:19,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:47:19,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:47:19,794 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:47:19,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:47:19,807 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 84 [2024-11-28 04:47:19,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 252 flow. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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 04:47:19,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:47:19,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 84 [2024-11-28 04:47:19,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:47:23,558 INFO L124 PetriNetUnfolderBase]: 35361/59053 cut-off events. [2024-11-28 04:47:23,559 INFO L125 PetriNetUnfolderBase]: For 567/567 co-relation queries the response was YES. [2024-11-28 04:47:23,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103912 conditions, 59053 events. 35361/59053 cut-off events. For 567/567 co-relation queries the response was YES. Maximal size of possible extension queue 2680. Compared 544191 event pairs, 8077 based on Foata normal form. 955/52276 useless extension candidates. Maximal degree in co-relation 103878. Up to 28557 conditions per place. [2024-11-28 04:47:23,938 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 121 selfloop transitions, 4 changer transitions 1/159 dead transitions. [2024-11-28 04:47:23,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 159 transitions, 652 flow [2024-11-28 04:47:23,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:47:23,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 04:47:23,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 308 transitions. [2024-11-28 04:47:23,941 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2024-11-28 04:47:23,941 INFO L175 Difference]: Start difference. First operand has 92 places, 89 transitions, 252 flow. Second operand 5 states and 308 transitions. [2024-11-28 04:47:23,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 159 transitions, 652 flow [2024-11-28 04:47:23,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 159 transitions, 641 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-28 04:47:23,947 INFO L231 Difference]: Finished difference. Result has 97 places, 91 transitions, 269 flow [2024-11-28 04:47:23,949 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=269, PETRI_PLACES=97, PETRI_TRANSITIONS=91} [2024-11-28 04:47:23,949 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 13 predicate places. [2024-11-28 04:47:23,950 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 91 transitions, 269 flow [2024-11-28 04:47:23,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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 04:47:23,950 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:47:23,951 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:47:23,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:47:23,951 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-28 04:47:23,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:23,951 INFO L85 PathProgramCache]: Analyzing trace with hash -2127150999, now seen corresponding path program 1 times [2024-11-28 04:47:23,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:23,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269479957] [2024-11-28 04:47:23,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:23,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:23,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:24,091 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 04:47:24,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:24,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269479957] [2024-11-28 04:47:24,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269479957] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:47:24,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:47:24,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:47:24,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498994369] [2024-11-28 04:47:24,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:47:24,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:47:24,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:47:24,093 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:47:24,093 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:47:24,100 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 84 [2024-11-28 04:47:24,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 91 transitions, 269 flow. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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 04:47:24,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:47:24,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 84 [2024-11-28 04:47:24,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:47:27,196 INFO L124 PetriNetUnfolderBase]: 23543/36609 cut-off events. [2024-11-28 04:47:27,196 INFO L125 PetriNetUnfolderBase]: For 2081/2097 co-relation queries the response was YES. [2024-11-28 04:47:27,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68576 conditions, 36609 events. 23543/36609 cut-off events. For 2081/2097 co-relation queries the response was YES. Maximal size of possible extension queue 1856. Compared 297672 event pairs, 10047 based on Foata normal form. 16/33117 useless extension candidates. Maximal degree in co-relation 68539. Up to 18015 conditions per place. [2024-11-28 04:47:27,409 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 91 selfloop transitions, 3 changer transitions 0/132 dead transitions. [2024-11-28 04:47:27,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 132 transitions, 559 flow [2024-11-28 04:47:27,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:47:27,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:47:27,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 248 transitions. [2024-11-28 04:47:27,411 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7380952380952381 [2024-11-28 04:47:27,411 INFO L175 Difference]: Start difference. First operand has 97 places, 91 transitions, 269 flow. Second operand 4 states and 248 transitions. [2024-11-28 04:47:27,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 132 transitions, 559 flow [2024-11-28 04:47:27,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 132 transitions, 557 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:47:27,433 INFO L231 Difference]: Finished difference. Result has 98 places, 90 transitions, 271 flow [2024-11-28 04:47:27,434 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=271, PETRI_PLACES=98, PETRI_TRANSITIONS=90} [2024-11-28 04:47:27,434 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 14 predicate places. [2024-11-28 04:47:27,434 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 90 transitions, 271 flow [2024-11-28 04:47:27,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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 04:47:27,435 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:47:27,435 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:47:27,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:47:27,435 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-28 04:47:27,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:27,436 INFO L85 PathProgramCache]: Analyzing trace with hash -2127151000, now seen corresponding path program 1 times [2024-11-28 04:47:27,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:27,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692556234] [2024-11-28 04:47:27,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:27,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:27,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:27,555 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 04:47:27,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:27,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692556234] [2024-11-28 04:47:27,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692556234] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:47:27,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:47:27,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:47:27,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382238428] [2024-11-28 04:47:27,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:47:27,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:47:27,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:47:27,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:47:27,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:47:27,566 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 84 [2024-11-28 04:47:27,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 90 transitions, 271 flow. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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 04:47:27,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:47:27,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 84 [2024-11-28 04:47:27,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:47:30,567 INFO L124 PetriNetUnfolderBase]: 23698/39397 cut-off events. [2024-11-28 04:47:30,567 INFO L125 PetriNetUnfolderBase]: For 4224/4240 co-relation queries the response was YES. [2024-11-28 04:47:30,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73522 conditions, 39397 events. 23698/39397 cut-off events. For 4224/4240 co-relation queries the response was YES. Maximal size of possible extension queue 2013. Compared 348824 event pairs, 16740 based on Foata normal form. 17/35636 useless extension candidates. Maximal degree in co-relation 73487. Up to 28924 conditions per place. [2024-11-28 04:47:31,102 INFO L140 encePairwiseOnDemand]: 81/84 looper letters, 50 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2024-11-28 04:47:31,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 89 transitions, 372 flow [2024-11-28 04:47:31,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:47:31,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:47:31,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 166 transitions. [2024-11-28 04:47:31,104 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6587301587301587 [2024-11-28 04:47:31,104 INFO L175 Difference]: Start difference. First operand has 98 places, 90 transitions, 271 flow. Second operand 3 states and 166 transitions. [2024-11-28 04:47:31,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 89 transitions, 372 flow [2024-11-28 04:47:31,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 89 transitions, 366 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 04:47:31,124 INFO L231 Difference]: Finished difference. Result has 97 places, 89 transitions, 266 flow [2024-11-28 04:47:31,125 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=97, PETRI_TRANSITIONS=89} [2024-11-28 04:47:31,125 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 13 predicate places. [2024-11-28 04:47:31,125 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 89 transitions, 266 flow [2024-11-28 04:47:31,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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 04:47:31,126 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:47:31,126 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:47:31,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:47:31,126 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-28 04:47:31,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:31,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1528096710, now seen corresponding path program 1 times [2024-11-28 04:47:31,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:31,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678902680] [2024-11-28 04:47:31,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:31,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:31,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:31,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:47:31,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:31,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678902680] [2024-11-28 04:47:31,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678902680] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:47:31,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040167432] [2024-11-28 04:47:31,562 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:31,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:47:31,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c92ccde9-c72e-4952-bab3-d6ef53d36399/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:47:31,564 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c92ccde9-c72e-4952-bab3-d6ef53d36399/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:47:31,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c92ccde9-c72e-4952-bab3-d6ef53d36399/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:47:31,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:31,665 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 04:47:31,667 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:47:31,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:47:31,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:47:31,878 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:47:31,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-28 04:47:31,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-28 04:47:32,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:47:32,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040167432] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:47:32,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:47:32,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2024-11-28 04:47:32,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640895298] [2024-11-28 04:47:32,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:47:32,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:47:32,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:47:32,016 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:47:32,016 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:47:32,036 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 84 [2024-11-28 04:47:32,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 89 transitions, 266 flow. Second operand has 13 states, 13 states have (on average 44.38461538461539) internal successors, (577), 13 states have internal predecessors, (577), 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 04:47:32,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:47:32,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 84 [2024-11-28 04:47:32,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:47:36,627 INFO L124 PetriNetUnfolderBase]: 38925/59845 cut-off events. [2024-11-28 04:47:36,628 INFO L125 PetriNetUnfolderBase]: For 3234/3250 co-relation queries the response was YES. [2024-11-28 04:47:36,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112523 conditions, 59845 events. 38925/59845 cut-off events. For 3234/3250 co-relation queries the response was YES. Maximal size of possible extension queue 2476. Compared 504575 event pairs, 12502 based on Foata normal form. 16/55261 useless extension candidates. Maximal degree in co-relation 112496. Up to 22531 conditions per place. [2024-11-28 04:47:37,020 INFO L140 encePairwiseOnDemand]: 73/84 looper letters, 106 selfloop transitions, 14 changer transitions 0/158 dead transitions. [2024-11-28 04:47:37,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 158 transitions, 674 flow [2024-11-28 04:47:37,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:47:37,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 04:47:37,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 486 transitions. [2024-11-28 04:47:37,023 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-11-28 04:47:37,023 INFO L175 Difference]: Start difference. First operand has 97 places, 89 transitions, 266 flow. Second operand 9 states and 486 transitions. [2024-11-28 04:47:37,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 158 transitions, 674 flow [2024-11-28 04:47:37,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 158 transitions, 670 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 04:47:37,032 INFO L231 Difference]: Finished difference. Result has 106 places, 94 transitions, 326 flow [2024-11-28 04:47:37,033 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=326, PETRI_PLACES=106, PETRI_TRANSITIONS=94} [2024-11-28 04:47:37,033 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 22 predicate places. [2024-11-28 04:47:37,034 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 94 transitions, 326 flow [2024-11-28 04:47:37,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 44.38461538461539) internal successors, (577), 13 states have internal predecessors, (577), 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 04:47:37,034 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:47:37,034 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1] [2024-11-28 04:47:37,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c92ccde9-c72e-4952-bab3-d6ef53d36399/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 04:47:37,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c92ccde9-c72e-4952-bab3-d6ef53d36399/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:47:37,235 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-28 04:47:37,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:37,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1264419177, now seen corresponding path program 2 times [2024-11-28 04:47:37,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:37,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176097446] [2024-11-28 04:47:37,235 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:47:37,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:37,250 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:47:37,251 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:47:37,311 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 04:47:37,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:37,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176097446] [2024-11-28 04:47:37,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176097446] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:47:37,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941816745] [2024-11-28 04:47:37,312 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:47:37,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:47:37,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c92ccde9-c72e-4952-bab3-d6ef53d36399/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:47:37,314 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c92ccde9-c72e-4952-bab3-d6ef53d36399/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:47:37,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c92ccde9-c72e-4952-bab3-d6ef53d36399/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:47:37,386 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:47:37,386 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:47:37,387 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:47:37,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:47:37,423 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 04:47:37,424 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:47:37,468 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 04:47:37,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941816745] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:47:37,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:47:37,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2024-11-28 04:47:37,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918536017] [2024-11-28 04:47:37,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:47:37,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:47:37,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:47:37,470 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:47:37,470 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:47:37,499 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 84 [2024-11-28 04:47:37,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 94 transitions, 326 flow. Second operand has 6 states, 6 states have (on average 40.166666666666664) internal successors, (241), 6 states have internal predecessors, (241), 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 04:47:37,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:47:37,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 84 [2024-11-28 04:47:37,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:47:42,349 INFO L124 PetriNetUnfolderBase]: 39347/62392 cut-off events. [2024-11-28 04:47:42,350 INFO L125 PetriNetUnfolderBase]: For 18972/18988 co-relation queries the response was YES. [2024-11-28 04:47:42,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128881 conditions, 62392 events. 39347/62392 cut-off events. For 18972/18988 co-relation queries the response was YES. Maximal size of possible extension queue 2627. Compared 547458 event pairs, 28247 based on Foata normal form. 17/57788 useless extension candidates. Maximal degree in co-relation 128845. Up to 48424 conditions per place. [2024-11-28 04:47:43,144 INFO L140 encePairwiseOnDemand]: 78/84 looper letters, 41 selfloop transitions, 16 changer transitions 0/93 dead transitions. [2024-11-28 04:47:43,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 93 transitions, 430 flow [2024-11-28 04:47:43,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:47:43,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 04:47:43,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 275 transitions. [2024-11-28 04:47:43,146 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5456349206349206 [2024-11-28 04:47:43,146 INFO L175 Difference]: Start difference. First operand has 106 places, 94 transitions, 326 flow. Second operand 6 states and 275 transitions. [2024-11-28 04:47:43,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 93 transitions, 430 flow [2024-11-28 04:47:43,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 93 transitions, 410 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-11-28 04:47:43,173 INFO L231 Difference]: Finished difference. Result has 102 places, 93 transitions, 328 flow [2024-11-28 04:47:43,173 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=328, PETRI_PLACES=102, PETRI_TRANSITIONS=93} [2024-11-28 04:47:43,174 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 18 predicate places. [2024-11-28 04:47:43,174 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 93 transitions, 328 flow [2024-11-28 04:47:43,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.166666666666664) internal successors, (241), 6 states have internal predecessors, (241), 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 04:47:43,175 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:47:43,175 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:47:43,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c92ccde9-c72e-4952-bab3-d6ef53d36399/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 04:47:43,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c92ccde9-c72e-4952-bab3-d6ef53d36399/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:47:43,375 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-28 04:47:43,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:43,376 INFO L85 PathProgramCache]: Analyzing trace with hash 377897629, now seen corresponding path program 1 times [2024-11-28 04:47:43,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:43,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532033007] [2024-11-28 04:47:43,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:43,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:43,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:43,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:47:43,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:43,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532033007] [2024-11-28 04:47:43,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532033007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:47:43,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:47:43,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:47:43,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746805887] [2024-11-28 04:47:43,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:47:43,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:47:43,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:47:43,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:47:43,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:47:43,489 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 84 [2024-11-28 04:47:43,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 93 transitions, 328 flow. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 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 04:47:43,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:47:43,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 84 [2024-11-28 04:47:43,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:47:48,926 INFO L124 PetriNetUnfolderBase]: 45564/68712 cut-off events. [2024-11-28 04:47:48,926 INFO L125 PetriNetUnfolderBase]: For 20311/20327 co-relation queries the response was YES. [2024-11-28 04:47:49,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143406 conditions, 68712 events. 45564/68712 cut-off events. For 20311/20327 co-relation queries the response was YES. Maximal size of possible extension queue 2787. Compared 571838 event pairs, 19214 based on Foata normal form. 1606/66678 useless extension candidates. Maximal degree in co-relation 143319. Up to 37484 conditions per place. [2024-11-28 04:47:49,344 INFO L140 encePairwiseOnDemand]: 78/84 looper letters, 97 selfloop transitions, 4 changer transitions 0/136 dead transitions. [2024-11-28 04:47:49,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 136 transitions, 636 flow [2024-11-28 04:47:49,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:47:49,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:47:49,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 249 transitions. [2024-11-28 04:47:49,346 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7410714285714286 [2024-11-28 04:47:49,346 INFO L175 Difference]: Start difference. First operand has 102 places, 93 transitions, 328 flow. Second operand 4 states and 249 transitions. [2024-11-28 04:47:49,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 136 transitions, 636 flow [2024-11-28 04:47:49,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 136 transitions, 608 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 04:47:49,383 INFO L231 Difference]: Finished difference. Result has 103 places, 94 transitions, 321 flow [2024-11-28 04:47:49,383 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=321, PETRI_PLACES=103, PETRI_TRANSITIONS=94} [2024-11-28 04:47:49,388 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 19 predicate places. [2024-11-28 04:47:49,388 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 94 transitions, 321 flow [2024-11-28 04:47:49,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 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 04:47:49,388 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:47:49,389 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:47:49,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 04:47:49,389 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-28 04:47:49,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:49,389 INFO L85 PathProgramCache]: Analyzing trace with hash 941898201, now seen corresponding path program 1 times [2024-11-28 04:47:49,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:49,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924686371] [2024-11-28 04:47:49,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:49,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:49,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:49,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:47:49,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:49,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924686371] [2024-11-28 04:47:49,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924686371] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:47:49,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:47:49,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:47:49,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076500576] [2024-11-28 04:47:49,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:47:49,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:47:49,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:47:49,444 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:47:49,444 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:47:49,456 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 84 [2024-11-28 04:47:49,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 94 transitions, 321 flow. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 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 04:47:49,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:47:49,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 84 [2024-11-28 04:47:49,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand