./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 1d936eafcc314e66bb4cd572754c58bf1f2fc59d35c83764f43dae769bce220a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:26:03,889 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:26:03,946 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:26:03,949 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:26:03,950 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:26:03,972 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:26:03,973 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:26:03,973 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:26:03,974 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:26:03,975 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:26:03,977 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:26:03,977 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:26:03,977 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:26:03,978 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:26:03,978 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:26:03,978 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:26:03,978 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:26:03,978 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:26:03,979 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:26:03,979 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:26:03,979 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:26:03,981 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:26:03,982 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:26:03,982 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:26:03,982 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:26:03,982 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:26:03,982 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:26:03,983 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:26:03,983 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:26:03,983 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:26:03,983 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:26:03,983 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:26:03,984 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:26:03,984 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:26:03,984 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:26:03,985 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:26:03,985 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:26:03,985 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:26:03,985 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:26:03,986 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:26:03,986 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:26:03,986 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:26:03,986 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:26:03,987 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:26:03,987 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d936eafcc314e66bb4cd572754c58bf1f2fc59d35c83764f43dae769bce220a [2024-11-10 22:26:04,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:26:04,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:26:04,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:26:04,290 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:26:04,290 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:26:04,291 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c [2024-11-10 22:26:05,557 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:26:05,721 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:26:05,722 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c [2024-11-10 22:26:05,734 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58e712f85/fd19de824e5e452ab34127de67a86681/FLAGce4078e90 [2024-11-10 22:26:05,747 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58e712f85/fd19de824e5e452ab34127de67a86681 [2024-11-10 22:26:05,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:26:05,752 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:26:05,753 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:26:05,753 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:26:05,758 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:26:05,759 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:26:05" (1/1) ... [2024-11-10 22:26:05,760 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38570786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:05, skipping insertion in model container [2024-11-10 22:26:05,760 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:26:05" (1/1) ... [2024-11-10 22:26:05,780 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:26:05,977 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:26:05,983 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:26:06,001 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:26:06,030 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:26:06,031 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:06 WrapperNode [2024-11-10 22:26:06,031 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:26:06,032 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:26:06,032 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:26:06,032 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:26:06,043 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:06" (1/1) ... [2024-11-10 22:26:06,059 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:06" (1/1) ... [2024-11-10 22:26:06,088 INFO L138 Inliner]: procedures = 24, calls = 31, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 230 [2024-11-10 22:26:06,088 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:26:06,089 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:26:06,089 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:26:06,089 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:26:06,113 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:06" (1/1) ... [2024-11-10 22:26:06,114 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:06" (1/1) ... [2024-11-10 22:26:06,117 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:06" (1/1) ... [2024-11-10 22:26:06,132 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-10 22:26:06,132 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:06" (1/1) ... [2024-11-10 22:26:06,132 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:06" (1/1) ... [2024-11-10 22:26:06,137 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:06" (1/1) ... [2024-11-10 22:26:06,137 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:06" (1/1) ... [2024-11-10 22:26:06,138 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:06" (1/1) ... [2024-11-10 22:26:06,139 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:06" (1/1) ... [2024-11-10 22:26:06,141 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:26:06,142 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:26:06,142 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:26:06,142 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:26:06,143 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:06" (1/1) ... [2024-11-10 22:26:06,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:26:06,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:26:06,176 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 22:26:06,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 22:26:06,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:26:06,223 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 22:26:06,224 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 22:26:06,224 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 22:26:06,224 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 22:26:06,224 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 22:26:06,224 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 22:26:06,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:26:06,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 22:26:06,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 22:26:06,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 22:26:06,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 22:26:06,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 22:26:06,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 22:26:06,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:26:06,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:26:06,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 22:26:06,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 22:26:06,226 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 22:26:06,314 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:26:06,317 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:26:06,623 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:26:06,624 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:26:06,953 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:26:06,953 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:26:06,954 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:26:06 BoogieIcfgContainer [2024-11-10 22:26:06,954 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:26:06,957 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:26:06,957 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:26:06,961 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:26:06,961 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:26:05" (1/3) ... [2024-11-10 22:26:06,962 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb75a52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:26:06, skipping insertion in model container [2024-11-10 22:26:06,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:26:06" (2/3) ... [2024-11-10 22:26:06,963 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb75a52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:26:06, skipping insertion in model container [2024-11-10 22:26:06,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:26:06" (3/3) ... [2024-11-10 22:26:06,964 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt2.wvr.c [2024-11-10 22:26:06,979 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:26:06,980 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2024-11-10 22:26:06,980 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:26:07,099 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 22:26:07,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 77 transitions, 175 flow [2024-11-10 22:26:07,172 INFO L124 PetriNetUnfolderBase]: 8/74 cut-off events. [2024-11-10 22:26:07,172 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 22:26:07,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 74 events. 8/74 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 258 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2024-11-10 22:26:07,182 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 77 transitions, 175 flow [2024-11-10 22:26:07,185 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 72 transitions, 159 flow [2024-11-10 22:26:07,198 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:26:07,209 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;@21c2c920, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:26:07,214 INFO L334 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2024-11-10 22:26:07,217 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:26:07,217 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2024-11-10 22:26:07,221 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:26:07,221 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:26:07,222 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 22:26:07,222 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-10 22:26:07,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:26:07,234 INFO L85 PathProgramCache]: Analyzing trace with hash 21982554, now seen corresponding path program 1 times [2024-11-10 22:26:07,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:26:07,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014365899] [2024-11-10 22:26:07,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:26:07,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:26:07,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:26:07,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:26:07,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:26:07,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014365899] [2024-11-10 22:26:07,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014365899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:26:07,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:26:07,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:26:07,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045188597] [2024-11-10 22:26:07,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:26:07,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:26:07,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:26:07,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:26:07,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:26:07,642 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 77 [2024-11-10 22:26:07,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 72 transitions, 159 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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) [2024-11-10 22:26:07,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:26:07,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 77 [2024-11-10 22:26:07,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:26:08,455 INFO L124 PetriNetUnfolderBase]: 2971/4791 cut-off events. [2024-11-10 22:26:08,456 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2024-11-10 22:26:08,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9232 conditions, 4791 events. 2971/4791 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 35474 event pairs, 2534 based on Foata normal form. 438/3032 useless extension candidates. Maximal degree in co-relation 8711. Up to 4217 conditions per place. [2024-11-10 22:26:08,484 INFO L140 encePairwiseOnDemand]: 61/77 looper letters, 37 selfloop transitions, 4 changer transitions 0/65 dead transitions. [2024-11-10 22:26:08,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 65 transitions, 227 flow [2024-11-10 22:26:08,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:26:08,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:26:08,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 162 transitions. [2024-11-10 22:26:08,494 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.525974025974026 [2024-11-10 22:26:08,495 INFO L175 Difference]: Start difference. First operand has 74 places, 72 transitions, 159 flow. Second operand 4 states and 162 transitions. [2024-11-10 22:26:08,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 65 transitions, 227 flow [2024-11-10 22:26:08,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 65 transitions, 218 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-10 22:26:08,510 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 159 flow [2024-11-10 22:26:08,511 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=159, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2024-11-10 22:26:08,514 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, -6 predicate places. [2024-11-10 22:26:08,514 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 159 flow [2024-11-10 22:26:08,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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) [2024-11-10 22:26:08,515 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:26:08,515 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-10 22:26:08,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 22:26:08,515 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-10 22:26:08,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:26:08,516 INFO L85 PathProgramCache]: Analyzing trace with hash -940139210, now seen corresponding path program 1 times [2024-11-10 22:26:08,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:26:08,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042584222] [2024-11-10 22:26:08,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:26:08,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:26:08,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:26:08,616 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:26:08,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:26:08,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042584222] [2024-11-10 22:26:08,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042584222] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:26:08,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648723456] [2024-11-10 22:26:08,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:26:08,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:26:08,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:26:08,622 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:26:08,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 22:26:08,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:26:08,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:26:08,710 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:26:08,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:26:08,758 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:26:08,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648723456] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:26:08,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:26:08,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-10 22:26:08,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531392104] [2024-11-10 22:26:08,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:26:08,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:26:08,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:26:08,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:26:08,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:26:08,775 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 77 [2024-11-10 22:26:08,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 159 flow. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 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) [2024-11-10 22:26:08,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:26:08,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 77 [2024-11-10 22:26:08,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:26:09,328 INFO L124 PetriNetUnfolderBase]: 2971/4790 cut-off events. [2024-11-10 22:26:09,329 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-10 22:26:09,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9160 conditions, 4790 events. 2971/4790 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 35356 event pairs, 2534 based on Foata normal form. 1/2594 useless extension candidates. Maximal degree in co-relation 9131. Up to 4212 conditions per place. [2024-11-10 22:26:09,346 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 33 selfloop transitions, 7 changer transitions 0/64 dead transitions. [2024-11-10 22:26:09,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 64 transitions, 235 flow [2024-11-10 22:26:09,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:26:09,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:26:09,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 203 transitions. [2024-11-10 22:26:09,352 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-11-10 22:26:09,352 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 159 flow. Second operand 6 states and 203 transitions. [2024-11-10 22:26:09,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 64 transitions, 235 flow [2024-11-10 22:26:09,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 64 transitions, 232 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:26:09,354 INFO L231 Difference]: Finished difference. Result has 71 places, 64 transitions, 166 flow [2024-11-10 22:26:09,354 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=166, PETRI_PLACES=71, PETRI_TRANSITIONS=64} [2024-11-10 22:26:09,356 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, -3 predicate places. [2024-11-10 22:26:09,356 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 64 transitions, 166 flow [2024-11-10 22:26:09,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 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) [2024-11-10 22:26:09,357 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:26:09,357 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-10 22:26:09,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-10 22:26:09,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:26:09,563 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-10 22:26:09,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:26:09,565 INFO L85 PathProgramCache]: Analyzing trace with hash 920456210, now seen corresponding path program 1 times [2024-11-10 22:26:09,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:26:09,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128621410] [2024-11-10 22:26:09,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:26:09,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:26:09,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:26:09,658 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:26:09,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:26:09,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128621410] [2024-11-10 22:26:09,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128621410] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:26:09,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456553623] [2024-11-10 22:26:09,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:26:09,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:26:09,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:26:09,661 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:26:09,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 22:26:09,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:26:09,730 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:26:09,731 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:26:09,755 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:26:09,756 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:26:09,791 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:26:09,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456553623] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:26:09,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:26:09,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-10 22:26:09,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989447165] [2024-11-10 22:26:09,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:26:09,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:26:09,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:26:09,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:26:09,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:26:09,819 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 77 [2024-11-10 22:26:09,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 64 transitions, 166 flow. Second operand has 12 states, 12 states have (on average 28.083333333333332) internal successors, (337), 12 states have internal predecessors, (337), 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) [2024-11-10 22:26:09,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:26:09,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 77 [2024-11-10 22:26:09,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:26:10,313 INFO L124 PetriNetUnfolderBase]: 2974/4808 cut-off events. [2024-11-10 22:26:10,313 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2024-11-10 22:26:10,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9210 conditions, 4808 events. 2974/4808 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 35573 event pairs, 2534 based on Foata normal form. 3/2615 useless extension candidates. Maximal degree in co-relation 9132. Up to 4219 conditions per place. [2024-11-10 22:26:10,331 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 36 selfloop transitions, 13 changer transitions 0/73 dead transitions. [2024-11-10 22:26:10,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 73 transitions, 318 flow [2024-11-10 22:26:10,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:26:10,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:26:10,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 322 transitions. [2024-11-10 22:26:10,334 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-11-10 22:26:10,334 INFO L175 Difference]: Start difference. First operand has 71 places, 64 transitions, 166 flow. Second operand 10 states and 322 transitions. [2024-11-10 22:26:10,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 73 transitions, 318 flow [2024-11-10 22:26:10,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 73 transitions, 288 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-10 22:26:10,336 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 234 flow [2024-11-10 22:26:10,336 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=234, PETRI_PLACES=79, PETRI_TRANSITIONS=73} [2024-11-10 22:26:10,337 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 5 predicate places. [2024-11-10 22:26:10,337 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 234 flow [2024-11-10 22:26:10,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 28.083333333333332) internal successors, (337), 12 states have internal predecessors, (337), 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) [2024-11-10 22:26:10,337 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:26:10,337 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:26:10,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 22:26:10,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-10 22:26:10,539 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-10 22:26:10,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:26:10,540 INFO L85 PathProgramCache]: Analyzing trace with hash -18634118, now seen corresponding path program 1 times [2024-11-10 22:26:10,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:26:10,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611272474] [2024-11-10 22:26:10,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:26:10,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:26:10,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:26:10,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:26:10,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:26:10,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611272474] [2024-11-10 22:26:10,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611272474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:26:10,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:26:10,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:26:10,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423455751] [2024-11-10 22:26:10,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:26:10,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:26:10,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:26:10,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:26:10,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:26:10,620 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 77 [2024-11-10 22:26:10,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 73 transitions, 234 flow. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 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) [2024-11-10 22:26:10,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:26:10,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 77 [2024-11-10 22:26:10,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:26:11,384 INFO L124 PetriNetUnfolderBase]: 4380/7154 cut-off events. [2024-11-10 22:26:11,384 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-10 22:26:11,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13699 conditions, 7154 events. 4380/7154 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 711. Compared 54311 event pairs, 3234 based on Foata normal form. 146/4350 useless extension candidates. Maximal degree in co-relation 13660. Up to 4727 conditions per place. [2024-11-10 22:26:11,418 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 92 selfloop transitions, 6 changer transitions 0/121 dead transitions. [2024-11-10 22:26:11,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 121 transitions, 535 flow [2024-11-10 22:26:11,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:26:11,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:26:11,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 252 transitions. [2024-11-10 22:26:11,420 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-11-10 22:26:11,420 INFO L175 Difference]: Start difference. First operand has 79 places, 73 transitions, 234 flow. Second operand 6 states and 252 transitions. [2024-11-10 22:26:11,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 121 transitions, 535 flow [2024-11-10 22:26:11,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 121 transitions, 524 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-10 22:26:11,422 INFO L231 Difference]: Finished difference. Result has 85 places, 76 transitions, 257 flow [2024-11-10 22:26:11,422 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=257, PETRI_PLACES=85, PETRI_TRANSITIONS=76} [2024-11-10 22:26:11,423 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 11 predicate places. [2024-11-10 22:26:11,423 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 76 transitions, 257 flow [2024-11-10 22:26:11,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 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) [2024-11-10 22:26:11,424 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:26:11,424 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:26:11,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 22:26:11,424 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-10 22:26:11,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:26:11,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1642359222, now seen corresponding path program 1 times [2024-11-10 22:26:11,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:26:11,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601697124] [2024-11-10 22:26:11,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:26:11,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:26:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:26:11,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:26:11,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:26:11,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601697124] [2024-11-10 22:26:11,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601697124] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:26:11,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:26:11,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 22:26:11,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041566851] [2024-11-10 22:26:11,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:26:11,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:26:11,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:26:11,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:26:11,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 22:26:11,523 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 77 [2024-11-10 22:26:11,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 76 transitions, 257 flow. Second operand has 6 states, 6 states have (on average 28.5) internal successors, (171), 6 states have internal predecessors, (171), 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) [2024-11-10 22:26:11,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:26:11,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 77 [2024-11-10 22:26:11,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:26:12,064 INFO L124 PetriNetUnfolderBase]: 3682/6316 cut-off events. [2024-11-10 22:26:12,065 INFO L125 PetriNetUnfolderBase]: For 767/928 co-relation queries the response was YES. [2024-11-10 22:26:12,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12391 conditions, 6316 events. 3682/6316 cut-off events. For 767/928 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 49199 event pairs, 3063 based on Foata normal form. 62/3872 useless extension candidates. Maximal degree in co-relation 12348. Up to 4747 conditions per place. [2024-11-10 22:26:12,091 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 77 selfloop transitions, 6 changer transitions 2/108 dead transitions. [2024-11-10 22:26:12,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 108 transitions, 508 flow [2024-11-10 22:26:12,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:26:12,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:26:12,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 239 transitions. [2024-11-10 22:26:12,093 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5173160173160173 [2024-11-10 22:26:12,093 INFO L175 Difference]: Start difference. First operand has 85 places, 76 transitions, 257 flow. Second operand 6 states and 239 transitions. [2024-11-10 22:26:12,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 108 transitions, 508 flow [2024-11-10 22:26:12,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 108 transitions, 506 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:26:12,095 INFO L231 Difference]: Finished difference. Result has 91 places, 78 transitions, 282 flow [2024-11-10 22:26:12,095 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=282, PETRI_PLACES=91, PETRI_TRANSITIONS=78} [2024-11-10 22:26:12,096 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 17 predicate places. [2024-11-10 22:26:12,096 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 78 transitions, 282 flow [2024-11-10 22:26:12,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.5) internal successors, (171), 6 states have internal predecessors, (171), 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) [2024-11-10 22:26:12,096 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:26:12,097 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:26:12,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 22:26:12,097 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-10 22:26:12,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:26:12,097 INFO L85 PathProgramCache]: Analyzing trace with hash -204733406, now seen corresponding path program 1 times [2024-11-10 22:26:12,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:26:12,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032879369] [2024-11-10 22:26:12,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:26:12,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:26:12,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:26:12,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:26:12,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:26:12,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032879369] [2024-11-10 22:26:12,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032879369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:26:12,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:26:12,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 22:26:12,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795993282] [2024-11-10 22:26:12,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:26:12,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:26:12,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:26:12,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:26:12,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:26:12,152 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-11-10 22:26:12,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 78 transitions, 282 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:26:12,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:26:12,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-11-10 22:26:12,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:26:12,992 INFO L124 PetriNetUnfolderBase]: 5012/9042 cut-off events. [2024-11-10 22:26:12,993 INFO L125 PetriNetUnfolderBase]: For 1726/1978 co-relation queries the response was YES. [2024-11-10 22:26:13,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18082 conditions, 9042 events. 5012/9042 cut-off events. For 1726/1978 co-relation queries the response was YES. Maximal size of possible extension queue 790. Compared 77563 event pairs, 2213 based on Foata normal form. 0/5745 useless extension candidates. Maximal degree in co-relation 18038. Up to 3766 conditions per place. [2024-11-10 22:26:13,042 INFO L140 encePairwiseOnDemand]: 73/77 looper letters, 77 selfloop transitions, 3 changer transitions 0/106 dead transitions. [2024-11-10 22:26:13,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 106 transitions, 509 flow [2024-11-10 22:26:13,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:26:13,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:26:13,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2024-11-10 22:26:13,046 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.658008658008658 [2024-11-10 22:26:13,046 INFO L175 Difference]: Start difference. First operand has 91 places, 78 transitions, 282 flow. Second operand 3 states and 152 transitions. [2024-11-10 22:26:13,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 106 transitions, 509 flow [2024-11-10 22:26:13,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 106 transitions, 502 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:26:13,058 INFO L231 Difference]: Finished difference. Result has 92 places, 80 transitions, 297 flow [2024-11-10 22:26:13,058 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=297, PETRI_PLACES=92, PETRI_TRANSITIONS=80} [2024-11-10 22:26:13,059 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 18 predicate places. [2024-11-10 22:26:13,059 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 80 transitions, 297 flow [2024-11-10 22:26:13,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:26:13,059 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:26:13,059 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:26:13,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 22:26:13,060 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-10 22:26:13,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:26:13,060 INFO L85 PathProgramCache]: Analyzing trace with hash -204733410, now seen corresponding path program 1 times [2024-11-10 22:26:13,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:26:13,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718718445] [2024-11-10 22:26:13,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:26:13,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:26:13,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:26:13,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:26:13,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:26:13,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718718445] [2024-11-10 22:26:13,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718718445] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:26:13,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702098780] [2024-11-10 22:26:13,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:26:13,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:26:13,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:26:13,249 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:26:13,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 22:26:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:26:13,324 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-10 22:26:13,326 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:26:13,367 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 [2024-11-10 22:26:13,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:26:13,431 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:26:13,492 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 [2024-11-10 22:26:13,495 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 [2024-11-10 22:26:13,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:26:13,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702098780] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:26:13,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:26:13,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-10 22:26:13,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257265637] [2024-11-10 22:26:13,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:26:13,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 22:26:13,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:26:13,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 22:26:13,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-10 22:26:13,575 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-11-10 22:26:13,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 80 transitions, 297 flow. Second operand has 11 states, 11 states have (on average 30.454545454545453) internal successors, (335), 11 states have internal predecessors, (335), 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) [2024-11-10 22:26:13,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:26:13,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-11-10 22:26:13,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:26:14,580 INFO L124 PetriNetUnfolderBase]: 5220/9488 cut-off events. [2024-11-10 22:26:14,580 INFO L125 PetriNetUnfolderBase]: For 2866/3248 co-relation queries the response was YES. [2024-11-10 22:26:14,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19851 conditions, 9488 events. 5220/9488 cut-off events. For 2866/3248 co-relation queries the response was YES. Maximal size of possible extension queue 746. Compared 80758 event pairs, 2012 based on Foata normal form. 0/6580 useless extension candidates. Maximal degree in co-relation 19806. Up to 2921 conditions per place. [2024-11-10 22:26:14,651 INFO L140 encePairwiseOnDemand]: 65/77 looper letters, 98 selfloop transitions, 16 changer transitions 1/141 dead transitions. [2024-11-10 22:26:14,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 141 transitions, 671 flow [2024-11-10 22:26:14,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 22:26:14,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-10 22:26:14,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 339 transitions. [2024-11-10 22:26:14,653 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5503246753246753 [2024-11-10 22:26:14,653 INFO L175 Difference]: Start difference. First operand has 92 places, 80 transitions, 297 flow. Second operand 8 states and 339 transitions. [2024-11-10 22:26:14,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 141 transitions, 671 flow [2024-11-10 22:26:14,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 141 transitions, 665 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:26:14,673 INFO L231 Difference]: Finished difference. Result has 99 places, 83 transitions, 352 flow [2024-11-10 22:26:14,673 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=352, PETRI_PLACES=99, PETRI_TRANSITIONS=83} [2024-11-10 22:26:14,674 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 25 predicate places. [2024-11-10 22:26:14,674 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 83 transitions, 352 flow [2024-11-10 22:26:14,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 30.454545454545453) internal successors, (335), 11 states have internal predecessors, (335), 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) [2024-11-10 22:26:14,674 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:26:14,674 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:26:14,691 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 22:26:14,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:26:14,875 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-10 22:26:14,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:26:14,876 INFO L85 PathProgramCache]: Analyzing trace with hash -204733407, now seen corresponding path program 1 times [2024-11-10 22:26:14,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:26:14,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571676623] [2024-11-10 22:26:14,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:26:14,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:26:14,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:26:14,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:26:14,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:26:14,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571676623] [2024-11-10 22:26:14,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571676623] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:26:14,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:26:14,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 22:26:14,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389916264] [2024-11-10 22:26:14,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:26:14,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:26:14,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:26:14,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:26:14,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:26:14,969 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-11-10 22:26:14,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 83 transitions, 352 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:26:14,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:26:14,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-11-10 22:26:14,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:26:15,746 INFO L124 PetriNetUnfolderBase]: 4866/9214 cut-off events. [2024-11-10 22:26:15,746 INFO L125 PetriNetUnfolderBase]: For 5408/5696 co-relation queries the response was YES. [2024-11-10 22:26:15,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21293 conditions, 9214 events. 4866/9214 cut-off events. For 5408/5696 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 81835 event pairs, 1573 based on Foata normal form. 0/6554 useless extension candidates. Maximal degree in co-relation 21245. Up to 4355 conditions per place. [2024-11-10 22:26:15,784 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 77 selfloop transitions, 2 changer transitions 0/105 dead transitions. [2024-11-10 22:26:15,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 105 transitions, 561 flow [2024-11-10 22:26:15,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:26:15,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:26:15,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2024-11-10 22:26:15,786 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6493506493506493 [2024-11-10 22:26:15,786 INFO L175 Difference]: Start difference. First operand has 99 places, 83 transitions, 352 flow. Second operand 3 states and 150 transitions. [2024-11-10 22:26:15,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 105 transitions, 561 flow [2024-11-10 22:26:15,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 105 transitions, 544 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-10 22:26:15,799 INFO L231 Difference]: Finished difference. Result has 96 places, 82 transitions, 335 flow [2024-11-10 22:26:15,799 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=335, PETRI_PLACES=96, PETRI_TRANSITIONS=82} [2024-11-10 22:26:15,800 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 22 predicate places. [2024-11-10 22:26:15,800 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 82 transitions, 335 flow [2024-11-10 22:26:15,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:26:15,800 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:26:15,801 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:26:15,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 22:26:15,801 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-10 22:26:15,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:26:15,801 INFO L85 PathProgramCache]: Analyzing trace with hash -204733409, now seen corresponding path program 1 times [2024-11-10 22:26:15,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:26:15,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911576313] [2024-11-10 22:26:15,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:26:15,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:26:15,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:26:15,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:26:15,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:26:15,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911576313] [2024-11-10 22:26:15,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911576313] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:26:15,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982309497] [2024-11-10 22:26:15,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:26:15,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:26:15,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:26:15,981 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:26:15,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 22:26:16,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:26:16,052 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-10 22:26:16,054 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:26:16,070 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 [2024-11-10 22:26:16,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:26:16,106 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:26:16,155 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 14 treesize of output 12 [2024-11-10 22:26:16,159 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 18 treesize of output 16 [2024-11-10 22:26:16,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:26:16,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982309497] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:26:16,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:26:16,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2024-11-10 22:26:16,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701944773] [2024-11-10 22:26:16,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:26:16,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 22:26:16,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:26:16,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 22:26:16,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-10 22:26:16,197 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-11-10 22:26:16,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 82 transitions, 335 flow. Second operand has 13 states, 13 states have (on average 30.53846153846154) internal successors, (397), 13 states have internal predecessors, (397), 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) [2024-11-10 22:26:16,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:26:16,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-11-10 22:26:16,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:26:17,209 INFO L124 PetriNetUnfolderBase]: 4512/8488 cut-off events. [2024-11-10 22:26:17,209 INFO L125 PetriNetUnfolderBase]: For 5026/5372 co-relation queries the response was YES. [2024-11-10 22:26:17,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19738 conditions, 8488 events. 4512/8488 cut-off events. For 5026/5372 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 72853 event pairs, 2012 based on Foata normal form. 146/5998 useless extension candidates. Maximal degree in co-relation 19691. Up to 2921 conditions per place. [2024-11-10 22:26:17,257 INFO L140 encePairwiseOnDemand]: 65/77 looper letters, 96 selfloop transitions, 16 changer transitions 1/139 dead transitions. [2024-11-10 22:26:17,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 139 transitions, 693 flow [2024-11-10 22:26:17,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 22:26:17,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-10 22:26:17,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 337 transitions. [2024-11-10 22:26:17,259 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.547077922077922 [2024-11-10 22:26:17,259 INFO L175 Difference]: Start difference. First operand has 96 places, 82 transitions, 335 flow. Second operand 8 states and 337 transitions. [2024-11-10 22:26:17,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 139 transitions, 693 flow [2024-11-10 22:26:17,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 139 transitions, 676 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:26:17,270 INFO L231 Difference]: Finished difference. Result has 100 places, 81 transitions, 346 flow [2024-11-10 22:26:17,270 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=346, PETRI_PLACES=100, PETRI_TRANSITIONS=81} [2024-11-10 22:26:17,271 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 26 predicate places. [2024-11-10 22:26:17,271 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 81 transitions, 346 flow [2024-11-10 22:26:17,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 30.53846153846154) internal successors, (397), 13 states have internal predecessors, (397), 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) [2024-11-10 22:26:17,272 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:26:17,272 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:26:17,287 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 22:26:17,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:26:17,477 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-10 22:26:17,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:26:17,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1175474719, now seen corresponding path program 1 times [2024-11-10 22:26:17,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:26:17,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119975295] [2024-11-10 22:26:17,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:26:17,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:26:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:26:17,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:26:17,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:26:17,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119975295] [2024-11-10 22:26:17,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119975295] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:26:17,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:26:17,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 22:26:17,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984857942] [2024-11-10 22:26:17,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:26:17,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:26:17,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:26:17,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:26:17,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 22:26:17,579 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2024-11-10 22:26:17,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 81 transitions, 346 flow. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 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) [2024-11-10 22:26:17,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:26:17,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2024-11-10 22:26:17,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:26:18,835 INFO L124 PetriNetUnfolderBase]: 5282/8473 cut-off events. [2024-11-10 22:26:18,836 INFO L125 PetriNetUnfolderBase]: For 6710/7302 co-relation queries the response was YES. [2024-11-10 22:26:18,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21522 conditions, 8473 events. 5282/8473 cut-off events. For 6710/7302 co-relation queries the response was YES. Maximal size of possible extension queue 697. Compared 62576 event pairs, 4132 based on Foata normal form. 0/5832 useless extension candidates. Maximal degree in co-relation 21474. Up to 6603 conditions per place. [2024-11-10 22:26:18,872 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 70 selfloop transitions, 4 changer transitions 25/121 dead transitions. [2024-11-10 22:26:18,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 121 transitions, 702 flow [2024-11-10 22:26:18,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 22:26:18,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 22:26:18,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 267 transitions. [2024-11-10 22:26:18,874 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49536178107606677 [2024-11-10 22:26:18,874 INFO L175 Difference]: Start difference. First operand has 100 places, 81 transitions, 346 flow. Second operand 7 states and 267 transitions. [2024-11-10 22:26:18,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 121 transitions, 702 flow [2024-11-10 22:26:18,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 121 transitions, 684 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-10 22:26:18,879 INFO L231 Difference]: Finished difference. Result has 103 places, 75 transitions, 308 flow [2024-11-10 22:26:18,879 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=308, PETRI_PLACES=103, PETRI_TRANSITIONS=75} [2024-11-10 22:26:18,879 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 29 predicate places. [2024-11-10 22:26:18,879 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 75 transitions, 308 flow [2024-11-10 22:26:18,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 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) [2024-11-10 22:26:18,880 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:26:18,880 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:26:18,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 22:26:18,880 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-10 22:26:18,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:26:18,881 INFO L85 PathProgramCache]: Analyzing trace with hash 819715941, now seen corresponding path program 1 times [2024-11-10 22:26:18,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:26:18,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830502151] [2024-11-10 22:26:18,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:26:18,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:26:18,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:26:18,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:26:18,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:26:18,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830502151] [2024-11-10 22:26:18,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830502151] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:26:18,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:26:18,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:26:18,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975788461] [2024-11-10 22:26:18,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:26:18,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:26:18,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:26:18,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:26:18,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:26:18,919 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2024-11-10 22:26:18,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 75 transitions, 308 flow. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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) [2024-11-10 22:26:18,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:26:18,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2024-11-10 22:26:18,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:26:19,654 INFO L124 PetriNetUnfolderBase]: 5587/9247 cut-off events. [2024-11-10 22:26:19,654 INFO L125 PetriNetUnfolderBase]: For 4817/5215 co-relation queries the response was YES. [2024-11-10 22:26:19,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22393 conditions, 9247 events. 5587/9247 cut-off events. For 4817/5215 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 73645 event pairs, 3933 based on Foata normal form. 292/6583 useless extension candidates. Maximal degree in co-relation 22349. Up to 6433 conditions per place. [2024-11-10 22:26:19,718 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 92 selfloop transitions, 4 changer transitions 0/118 dead transitions. [2024-11-10 22:26:19,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 118 transitions, 608 flow [2024-11-10 22:26:19,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:26:19,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:26:19,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 191 transitions. [2024-11-10 22:26:19,720 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6201298701298701 [2024-11-10 22:26:19,720 INFO L175 Difference]: Start difference. First operand has 103 places, 75 transitions, 308 flow. Second operand 4 states and 191 transitions. [2024-11-10 22:26:19,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 118 transitions, 608 flow [2024-11-10 22:26:19,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 118 transitions, 566 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-11-10 22:26:19,746 INFO L231 Difference]: Finished difference. Result has 91 places, 76 transitions, 303 flow [2024-11-10 22:26:19,747 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=303, PETRI_PLACES=91, PETRI_TRANSITIONS=76} [2024-11-10 22:26:19,747 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 17 predicate places. [2024-11-10 22:26:19,747 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 76 transitions, 303 flow [2024-11-10 22:26:19,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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) [2024-11-10 22:26:19,748 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:26:19,748 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:26:19,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-10 22:26:19,748 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-10 22:26:19,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:26:19,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1105401253, now seen corresponding path program 1 times [2024-11-10 22:26:19,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:26:19,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250593526] [2024-11-10 22:26:19,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:26:19,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:26:19,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:26:19,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:26:19,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:26:19,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250593526] [2024-11-10 22:26:19,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250593526] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:26:19,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701366731] [2024-11-10 22:26:19,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:26:19,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:26:19,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:26:19,897 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:26:19,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 22:26:19,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:26:19,982 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-10 22:26:19,984 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:26:19,999 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 [2024-11-10 22:26:20,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:26:20,043 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:26:20,097 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 14 treesize of output 12 [2024-11-10 22:26:20,101 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 18 treesize of output 16 [2024-11-10 22:26:20,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:26:20,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701366731] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:26:20,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:26:20,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2024-11-10 22:26:20,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179010052] [2024-11-10 22:26:20,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:26:20,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 22:26:20,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:26:20,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 22:26:20,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-10 22:26:20,144 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-11-10 22:26:20,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 76 transitions, 303 flow. Second operand has 13 states, 13 states have (on average 31.0) internal successors, (403), 13 states have internal predecessors, (403), 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) [2024-11-10 22:26:20,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:26:20,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-11-10 22:26:20,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:26:21,297 INFO L124 PetriNetUnfolderBase]: 6965/12101 cut-off events. [2024-11-10 22:26:21,300 INFO L125 PetriNetUnfolderBase]: For 8695/8695 co-relation queries the response was YES. [2024-11-10 22:26:21,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28637 conditions, 12101 events. 6965/12101 cut-off events. For 8695/8695 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 97464 event pairs, 1849 based on Foata normal form. 0/7901 useless extension candidates. Maximal degree in co-relation 28599. Up to 3650 conditions per place. [2024-11-10 22:26:21,421 INFO L140 encePairwiseOnDemand]: 65/77 looper letters, 87 selfloop transitions, 15 changer transitions 0/128 dead transitions. [2024-11-10 22:26:21,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 128 transitions, 721 flow [2024-11-10 22:26:21,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 22:26:21,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-10 22:26:21,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 317 transitions. [2024-11-10 22:26:21,423 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5146103896103896 [2024-11-10 22:26:21,423 INFO L175 Difference]: Start difference. First operand has 91 places, 76 transitions, 303 flow. Second operand 8 states and 317 transitions. [2024-11-10 22:26:21,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 128 transitions, 721 flow [2024-11-10 22:26:21,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 128 transitions, 703 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:26:21,429 INFO L231 Difference]: Finished difference. Result has 98 places, 82 transitions, 366 flow [2024-11-10 22:26:21,429 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=366, PETRI_PLACES=98, PETRI_TRANSITIONS=82} [2024-11-10 22:26:21,430 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 24 predicate places. [2024-11-10 22:26:21,430 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 82 transitions, 366 flow [2024-11-10 22:26:21,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 31.0) internal successors, (403), 13 states have internal predecessors, (403), 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) [2024-11-10 22:26:21,430 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:26:21,430 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:26:21,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-10 22:26:21,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-10 22:26:21,635 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-10 22:26:21,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:26:21,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1105401251, now seen corresponding path program 1 times [2024-11-10 22:26:21,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:26:21,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382556356] [2024-11-10 22:26:21,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:26:21,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:26:21,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:26:21,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:26:21,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:26:21,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382556356] [2024-11-10 22:26:21,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382556356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:26:21,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:26:21,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 22:26:21,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554900885] [2024-11-10 22:26:21,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:26:21,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:26:21,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:26:21,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:26:21,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:26:21,694 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-11-10 22:26:21,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 82 transitions, 366 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2024-11-10 22:26:21,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:26:21,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-11-10 22:26:21,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:26:22,820 INFO L124 PetriNetUnfolderBase]: 7770/14028 cut-off events. [2024-11-10 22:26:22,821 INFO L125 PetriNetUnfolderBase]: For 11495/11495 co-relation queries the response was YES. [2024-11-10 22:26:22,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36646 conditions, 14028 events. 7770/14028 cut-off events. For 11495/11495 co-relation queries the response was YES. Maximal size of possible extension queue 891. Compared 122314 event pairs, 1871 based on Foata normal form. 0/9732 useless extension candidates. Maximal degree in co-relation 36603. Up to 9186 conditions per place. [2024-11-10 22:26:22,925 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 78 selfloop transitions, 3 changer transitions 0/107 dead transitions. [2024-11-10 22:26:22,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 107 transitions, 640 flow [2024-11-10 22:26:22,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:26:22,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:26:22,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2024-11-10 22:26:22,926 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.645021645021645 [2024-11-10 22:26:22,926 INFO L175 Difference]: Start difference. First operand has 98 places, 82 transitions, 366 flow. Second operand 3 states and 149 transitions. [2024-11-10 22:26:22,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 107 transitions, 640 flow [2024-11-10 22:26:22,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 107 transitions, 630 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 22:26:22,934 INFO L231 Difference]: Finished difference. Result has 97 places, 84 transitions, 383 flow [2024-11-10 22:26:22,934 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=383, PETRI_PLACES=97, PETRI_TRANSITIONS=84} [2024-11-10 22:26:22,935 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 23 predicate places. [2024-11-10 22:26:22,935 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 84 transitions, 383 flow [2024-11-10 22:26:22,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2024-11-10 22:26:22,935 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:26:22,935 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:26:22,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-10 22:26:22,935 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-10 22:26:22,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:26:22,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1105401254, now seen corresponding path program 1 times [2024-11-10 22:26:22,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:26:22,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626422546] [2024-11-10 22:26:22,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:26:22,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:26:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:26:23,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:26:23,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:26:23,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626422546] [2024-11-10 22:26:23,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626422546] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:26:23,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274690503] [2024-11-10 22:26:23,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:26:23,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:26:23,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:26:23,123 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:26:23,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 22:26:23,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:26:23,195 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-10 22:26:23,196 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:26:23,206 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 [2024-11-10 22:26:23,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:26:23,248 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:26:23,289 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 [2024-11-10 22:26:23,291 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 [2024-11-10 22:26:23,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:26:23,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274690503] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:26:23,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:26:23,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-10 22:26:23,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978353556] [2024-11-10 22:26:23,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:26:23,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 22:26:23,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:26:23,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 22:26:23,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-10 22:26:23,329 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 77 [2024-11-10 22:26:23,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 84 transitions, 383 flow. Second operand has 11 states, 11 states have (on average 30.818181818181817) internal successors, (339), 11 states have internal predecessors, (339), 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) [2024-11-10 22:26:23,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:26:23,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 77 [2024-11-10 22:26:23,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:26:24,794 INFO L124 PetriNetUnfolderBase]: 7018/12683 cut-off events. [2024-11-10 22:26:24,795 INFO L125 PetriNetUnfolderBase]: For 11826/11826 co-relation queries the response was YES. [2024-11-10 22:26:24,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35088 conditions, 12683 events. 7018/12683 cut-off events. For 11826/11826 co-relation queries the response was YES. Maximal size of possible extension queue 826. Compared 110666 event pairs, 2060 based on Foata normal form. 310/9255 useless extension candidates. Maximal degree in co-relation 35046. Up to 3906 conditions per place. [2024-11-10 22:26:24,891 INFO L140 encePairwiseOnDemand]: 65/77 looper letters, 89 selfloop transitions, 15 changer transitions 0/130 dead transitions. [2024-11-10 22:26:24,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 130 transitions, 794 flow [2024-11-10 22:26:24,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 22:26:24,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-10 22:26:24,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 316 transitions. [2024-11-10 22:26:24,893 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.512987012987013 [2024-11-10 22:26:24,893 INFO L175 Difference]: Start difference. First operand has 97 places, 84 transitions, 383 flow. Second operand 8 states and 316 transitions. [2024-11-10 22:26:24,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 130 transitions, 794 flow [2024-11-10 22:26:24,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 130 transitions, 790 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:26:24,903 INFO L231 Difference]: Finished difference. Result has 103 places, 83 transitions, 406 flow [2024-11-10 22:26:24,903 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=406, PETRI_PLACES=103, PETRI_TRANSITIONS=83} [2024-11-10 22:26:24,904 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 29 predicate places. [2024-11-10 22:26:24,904 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 83 transitions, 406 flow [2024-11-10 22:26:24,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 30.818181818181817) internal successors, (339), 11 states have internal predecessors, (339), 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) [2024-11-10 22:26:24,904 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:26:24,905 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:26:24,918 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 22:26:25,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:26:25,109 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-10 22:26:25,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:26:25,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1982544323, now seen corresponding path program 1 times [2024-11-10 22:26:25,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:26:25,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990746392] [2024-11-10 22:26:25,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:26:25,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:26:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:26:25,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:26:25,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:26:25,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990746392] [2024-11-10 22:26:25,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990746392] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:26:25,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274476314] [2024-11-10 22:26:25,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:26:25,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:26:25,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:26:25,425 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:26:25,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 22:26:25,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:26:25,514 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-10 22:26:25,516 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:26:25,545 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 23 treesize of output 1 [2024-11-10 22:26:25,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:26:25,858 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:26:26,148 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 20 treesize of output 18 [2024-11-10 22:26:26,152 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 26 treesize of output 20 [2024-11-10 22:26:26,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:26:26,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274476314] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:26:26,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:26:26,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2024-11-10 22:26:26,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065650913] [2024-11-10 22:26:26,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:26:26,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-10 22:26:26,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:26:26,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-10 22:26:26,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2024-11-10 22:26:26,704 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 77 [2024-11-10 22:26:26,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 83 transitions, 406 flow. Second operand has 23 states, 23 states have (on average 25.695652173913043) internal successors, (591), 23 states have internal predecessors, (591), 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) [2024-11-10 22:26:26,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:26:26,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 77 [2024-11-10 22:26:26,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:26:33,833 INFO L124 PetriNetUnfolderBase]: 31186/49541 cut-off events. [2024-11-10 22:26:33,833 INFO L125 PetriNetUnfolderBase]: For 65653/65653 co-relation queries the response was YES. [2024-11-10 22:26:34,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153120 conditions, 49541 events. 31186/49541 cut-off events. For 65653/65653 co-relation queries the response was YES. Maximal size of possible extension queue 2817. Compared 444018 event pairs, 10806 based on Foata normal form. 0/37447 useless extension candidates. Maximal degree in co-relation 153074. Up to 7645 conditions per place. [2024-11-10 22:26:34,223 INFO L140 encePairwiseOnDemand]: 62/77 looper letters, 317 selfloop transitions, 41 changer transitions 1/381 dead transitions. [2024-11-10 22:26:34,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 381 transitions, 2755 flow [2024-11-10 22:26:34,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-10 22:26:34,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-10 22:26:34,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 697 transitions. [2024-11-10 22:26:34,226 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5028860028860029 [2024-11-10 22:26:34,226 INFO L175 Difference]: Start difference. First operand has 103 places, 83 transitions, 406 flow. Second operand 18 states and 697 transitions. [2024-11-10 22:26:34,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 381 transitions, 2755 flow [2024-11-10 22:26:34,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 381 transitions, 2715 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-10 22:26:34,252 INFO L231 Difference]: Finished difference. Result has 120 places, 115 transitions, 633 flow [2024-11-10 22:26:34,252 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=633, PETRI_PLACES=120, PETRI_TRANSITIONS=115} [2024-11-10 22:26:34,252 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 46 predicate places. [2024-11-10 22:26:34,252 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 115 transitions, 633 flow [2024-11-10 22:26:34,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 25.695652173913043) internal successors, (591), 23 states have internal predecessors, (591), 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) [2024-11-10 22:26:34,253 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:26:34,253 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:26:34,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-10 22:26:34,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:26:34,453 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-10 22:26:34,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:26:34,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1982544324, now seen corresponding path program 1 times [2024-11-10 22:26:34,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:26:34,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731948892] [2024-11-10 22:26:34,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:26:34,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:26:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:26:34,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:26:34,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:26:34,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731948892] [2024-11-10 22:26:34,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731948892] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:26:34,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063643299] [2024-11-10 22:26:34,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:26:34,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:26:34,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:26:34,847 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:26:34,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 22:26:34,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:26:34,930 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-10 22:26:34,932 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:26:34,957 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 23 treesize of output 1 [2024-11-10 22:26:35,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:26:35,221 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:26:35,481 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 18 treesize of output 16 [2024-11-10 22:26:35,485 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 16 [2024-11-10 22:26:35,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:26:35,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063643299] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:26:35,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:26:35,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2024-11-10 22:26:35,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758022181] [2024-11-10 22:26:35,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:26:35,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-10 22:26:35,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:26:35,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-10 22:26:35,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2024-11-10 22:26:35,823 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 77 [2024-11-10 22:26:35,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 115 transitions, 633 flow. Second operand has 23 states, 23 states have (on average 25.695652173913043) internal successors, (591), 23 states have internal predecessors, (591), 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) [2024-11-10 22:26:35,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:26:35,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 77 [2024-11-10 22:26:35,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:26:43,530 INFO L124 PetriNetUnfolderBase]: 30160/48173 cut-off events. [2024-11-10 22:26:43,531 INFO L125 PetriNetUnfolderBase]: For 72593/72593 co-relation queries the response was YES. [2024-11-10 22:26:43,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165050 conditions, 48173 events. 30160/48173 cut-off events. For 72593/72593 co-relation queries the response was YES. Maximal size of possible extension queue 2725. Compared 433161 event pairs, 10806 based on Foata normal form. 536/39011 useless extension candidates. Maximal degree in co-relation 164998. Up to 7453 conditions per place. [2024-11-10 22:26:44,005 INFO L140 encePairwiseOnDemand]: 62/77 looper letters, 315 selfloop transitions, 41 changer transitions 1/379 dead transitions. [2024-11-10 22:26:44,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 379 transitions, 2867 flow [2024-11-10 22:26:44,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-10 22:26:44,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-10 22:26:44,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 695 transitions. [2024-11-10 22:26:44,008 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5014430014430015 [2024-11-10 22:26:44,008 INFO L175 Difference]: Start difference. First operand has 120 places, 115 transitions, 633 flow. Second operand 18 states and 695 transitions. [2024-11-10 22:26:44,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 379 transitions, 2867 flow [2024-11-10 22:26:44,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 379 transitions, 2850 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-11-10 22:26:44,367 INFO L231 Difference]: Finished difference. Result has 132 places, 115 transitions, 702 flow [2024-11-10 22:26:44,367 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=702, PETRI_PLACES=132, PETRI_TRANSITIONS=115} [2024-11-10 22:26:44,368 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 58 predicate places. [2024-11-10 22:26:44,368 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 115 transitions, 702 flow [2024-11-10 22:26:44,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 25.695652173913043) internal successors, (591), 23 states have internal predecessors, (591), 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) [2024-11-10 22:26:44,368 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:26:44,368 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:26:44,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-10 22:26:44,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-10 22:26:44,572 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-10 22:26:44,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:26:44,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1433655071, now seen corresponding path program 1 times [2024-11-10 22:26:44,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:26:44,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147329812] [2024-11-10 22:26:44,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:26:44,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:26:44,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:26:44,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:26:44,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:26:44,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147329812] [2024-11-10 22:26:44,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147329812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:26:44,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:26:44,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:26:44,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139574354] [2024-11-10 22:26:44,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:26:44,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:26:44,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:26:44,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:26:44,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:26:44,619 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2024-11-10 22:26:44,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 115 transitions, 702 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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) [2024-11-10 22:26:44,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:26:44,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2024-11-10 22:26:44,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:26:50,856 INFO L124 PetriNetUnfolderBase]: 31438/51716 cut-off events. [2024-11-10 22:26:50,856 INFO L125 PetriNetUnfolderBase]: For 86315/86521 co-relation queries the response was YES. [2024-11-10 22:26:51,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179783 conditions, 51716 events. 31438/51716 cut-off events. For 86315/86521 co-relation queries the response was YES. Maximal size of possible extension queue 2888. Compared 477802 event pairs, 16041 based on Foata normal form. 1524/42734 useless extension candidates. Maximal degree in co-relation 179732. Up to 31526 conditions per place. [2024-11-10 22:26:51,680 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 175 selfloop transitions, 4 changer transitions 0/210 dead transitions. [2024-11-10 22:26:51,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 210 transitions, 1671 flow [2024-11-10 22:26:51,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:26:51,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:26:51,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 191 transitions. [2024-11-10 22:26:51,681 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6201298701298701 [2024-11-10 22:26:51,682 INFO L175 Difference]: Start difference. First operand has 132 places, 115 transitions, 702 flow. Second operand 4 states and 191 transitions. [2024-11-10 22:26:51,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 210 transitions, 1671 flow [2024-11-10 22:26:52,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 210 transitions, 1593 flow, removed 15 selfloop flow, removed 12 redundant places. [2024-11-10 22:26:52,304 INFO L231 Difference]: Finished difference. Result has 125 places, 116 transitions, 679 flow [2024-11-10 22:26:52,304 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=679, PETRI_PLACES=125, PETRI_TRANSITIONS=116} [2024-11-10 22:26:52,305 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 51 predicate places. [2024-11-10 22:26:52,305 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 116 transitions, 679 flow [2024-11-10 22:26:52,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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) [2024-11-10 22:26:52,305 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:26:52,305 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:26:52,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-10 22:26:52,305 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-10 22:26:52,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:26:52,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1740356534, now seen corresponding path program 1 times [2024-11-10 22:26:52,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:26:52,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435996140] [2024-11-10 22:26:52,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:26:52,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:26:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat