./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:11:06,380 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:11:06,458 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:11:06,466 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:11:06,470 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:11:06,492 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:11:06,492 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:11:06,493 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:11:06,493 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:11:06,493 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:11:06,493 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:11:06,493 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:11:06,493 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:11:06,494 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:11:06,494 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:11:06,494 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:11:06,494 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:11:06,494 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:11:06,494 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:11:06,494 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:11:06,494 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:11:06,494 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:11:06,494 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:11:06,494 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:11:06,494 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:11:06,495 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:11:06,495 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:11:06,495 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:11:06,495 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:11:06,495 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:11:06,495 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:11:06,495 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:11:06,495 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:11:06,495 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:11:06,495 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:11:06,495 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:11:06,495 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:11:06,495 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:11:06,496 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:11:06,496 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:11:06,496 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:11:06,496 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:11:06,496 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:11:06,496 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:11:06,496 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:11:06,496 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/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 -> 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 [2025-02-08 14:11:06,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:11:06,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:11:06,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:11:06,751 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:11:06,755 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:11:06,756 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2025-02-08 14:11:07,989 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2a89710bf/cc4eedf8acc44e4ca901e58b06d1ac06/FLAGfd1dd884b [2025-02-08 14:11:08,246 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:11:08,248 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2025-02-08 14:11:08,256 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2a89710bf/cc4eedf8acc44e4ca901e58b06d1ac06/FLAGfd1dd884b [2025-02-08 14:11:08,576 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2a89710bf/cc4eedf8acc44e4ca901e58b06d1ac06 [2025-02-08 14:11:08,578 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:11:08,579 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:11:08,580 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:11:08,580 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:11:08,583 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:11:08,584 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:11:08" (1/1) ... [2025-02-08 14:11:08,584 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@beba044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:08, skipping insertion in model container [2025-02-08 14:11:08,584 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:11:08" (1/1) ... [2025-02-08 14:11:08,594 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:11:08,698 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:11:08,704 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:11:08,720 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:11:08,730 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:11:08,731 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:08 WrapperNode [2025-02-08 14:11:08,731 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:11:08,732 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:11:08,732 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:11:08,732 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:11:08,736 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:08" (1/1) ... [2025-02-08 14:11:08,741 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:08" (1/1) ... [2025-02-08 14:11:08,757 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 17, calls inlined = 23, statements flattened = 314 [2025-02-08 14:11:08,758 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:11:08,758 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:11:08,758 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:11:08,758 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:11:08,764 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:08" (1/1) ... [2025-02-08 14:11:08,764 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:08" (1/1) ... [2025-02-08 14:11:08,766 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:08" (1/1) ... [2025-02-08 14:11:08,775 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-02-08 14:11:08,775 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:08" (1/1) ... [2025-02-08 14:11:08,775 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:08" (1/1) ... [2025-02-08 14:11:08,780 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:08" (1/1) ... [2025-02-08 14:11:08,781 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:08" (1/1) ... [2025-02-08 14:11:08,782 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:08" (1/1) ... [2025-02-08 14:11:08,782 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:08" (1/1) ... [2025-02-08 14:11:08,784 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:11:08,784 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:11:08,785 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:11:08,785 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:11:08,785 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:08" (1/1) ... [2025-02-08 14:11:08,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:11:08,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:08,811 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 14:11:08,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 14:11:08,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:11:08,846 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 14:11:08,846 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 14:11:08,846 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 14:11:08,846 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 14:11:08,846 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-08 14:11:08,846 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-08 14:11:08,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:11:08,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 14:11:08,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 14:11:08,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 14:11:08,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 14:11:08,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 14:11:08,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 14:11:08,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:11:08,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:11:08,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 14:11:08,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 14:11:08,848 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 14:11:08,932 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:11:08,933 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:11:09,042 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L53: havoc #t~ret4#1; [2025-02-08 14:11:09,042 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L53-1: havoc #t~mem3#1; [2025-02-08 14:11:09,042 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L53-2: ~res1~0 := #t~ret4#1; [2025-02-08 14:11:09,042 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L53-3: assume { :end_inline_plus } true;assume -2147483648 <= #t~ret4#1 && #t~ret4#1 <= 2147483647; [2025-02-08 14:11:09,043 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L53-4: havoc plus_#in~a#1, plus_#in~b#1; [2025-02-08 14:11:09,043 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L53-5: havoc plus_#t~short33#1, plus_#t~short34#1, plus_~a#1, plus_~b#1; [2025-02-08 14:11:09,043 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L53-6: #t~ret4#1 := plus_#res#1; [2025-02-08 14:11:09,043 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L54: [2025-02-08 14:11:09,043 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L51-2: havoc #t~post5#1; [2025-02-08 14:11:09,043 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L51-3: assume 1 + #t~post5#1 <= 2147483647; [2025-02-08 14:11:09,043 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L51-3: assume !(1 + #t~post5#1 <= 2147483647); [2025-02-08 14:11:09,043 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L51-4: ~j~0#1 := 1 + #t~post5#1; [2025-02-08 14:11:09,043 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L51-5: assume 1 + #t~post5#1 >= -2147483648; [2025-02-08 14:11:09,043 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L51-5: assume !(1 + #t~post5#1 >= -2147483648); [2025-02-08 14:11:09,043 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L51-6: #t~post5#1 := ~j~0#1; [2025-02-08 14:11:09,106 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L64-2: havoc #t~post11#1; [2025-02-08 14:11:09,107 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L64-3: assume 1 + #t~post11#1 <= 2147483647; [2025-02-08 14:11:09,107 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L64-3: assume !(1 + #t~post11#1 <= 2147483647); [2025-02-08 14:11:09,107 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L64-4: ~j~1#1 := 1 + #t~post11#1; [2025-02-08 14:11:09,107 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L64-5: assume 1 + #t~post11#1 >= -2147483648; [2025-02-08 14:11:09,107 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L64-5: assume !(1 + #t~post11#1 >= -2147483648); [2025-02-08 14:11:09,107 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L64-6: #t~post11#1 := ~j~1#1; [2025-02-08 14:11:09,107 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L66: havoc #t~ret10#1; [2025-02-08 14:11:09,107 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L66-1: havoc #t~mem9#1; [2025-02-08 14:11:09,107 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L66-2: ~res2~0 := #t~ret10#1; [2025-02-08 14:11:09,107 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L66-3: assume { :end_inline_plus } true;assume -2147483648 <= #t~ret10#1 && #t~ret10#1 <= 2147483647; [2025-02-08 14:11:09,108 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L66-4: havoc plus_#in~a#1, plus_#in~b#1; [2025-02-08 14:11:09,108 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L66-5: havoc plus_#t~short33#1, plus_#t~short34#1, plus_~a#1, plus_~b#1; [2025-02-08 14:11:09,108 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L66-6: #t~ret10#1 := plus_#res#1; [2025-02-08 14:11:09,108 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L67: [2025-02-08 14:11:09,170 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L77-2: havoc #t~post17#1; [2025-02-08 14:11:09,170 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L77-3: assume 1 + #t~post17#1 <= 2147483647; [2025-02-08 14:11:09,173 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L77-3: assume !(1 + #t~post17#1 <= 2147483647); [2025-02-08 14:11:09,174 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L77-4: ~j~2#1 := 1 + #t~post17#1; [2025-02-08 14:11:09,174 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L77-5: assume 1 + #t~post17#1 >= -2147483648; [2025-02-08 14:11:09,174 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L77-5: assume !(1 + #t~post17#1 >= -2147483648); [2025-02-08 14:11:09,174 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L77-6: #t~post17#1 := ~j~2#1; [2025-02-08 14:11:09,174 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L79: havoc #t~ret16#1; [2025-02-08 14:11:09,174 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L79-1: havoc #t~mem15#1; [2025-02-08 14:11:09,174 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L79-2: ~res2~0 := #t~ret16#1; [2025-02-08 14:11:09,174 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L79-3: assume { :end_inline_plus } true;assume -2147483648 <= #t~ret16#1 && #t~ret16#1 <= 2147483647; [2025-02-08 14:11:09,174 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L79-4: havoc plus_#in~a#1, plus_#in~b#1; [2025-02-08 14:11:09,174 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L79-5: havoc plus_#t~short33#1, plus_#t~short34#1, plus_~a#1, plus_~b#1; [2025-02-08 14:11:09,174 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L79-6: #t~ret16#1 := plus_#res#1; [2025-02-08 14:11:09,174 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L80: [2025-02-08 14:11:09,275 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:11:09,276 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:11:09,620 WARN L149 AtomicBlockAnalyzer]: Unexpected successor node of atomic block begin: L126 is not an error location. [2025-02-08 14:11:09,620 WARN L149 AtomicBlockAnalyzer]: Unexpected successor node of atomic block begin: L126 is not an error location. [2025-02-08 14:11:09,620 WARN L149 AtomicBlockAnalyzer]: Unexpected successor node of atomic block begin: L126 is not an error location. [2025-02-08 14:11:09,621 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:11:09,621 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:11:09,621 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:11:09 BoogieIcfgContainer [2025-02-08 14:11:09,621 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:11:09,623 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:11:09,623 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:11:09,626 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:11:09,626 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:11:08" (1/3) ... [2025-02-08 14:11:09,627 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50be6151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:11:09, skipping insertion in model container [2025-02-08 14:11:09,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:08" (2/3) ... [2025-02-08 14:11:09,627 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50be6151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:11:09, skipping insertion in model container [2025-02-08 14:11:09,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:11:09" (3/3) ... [2025-02-08 14:11:09,628 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product.wvr.c [2025-02-08 14:11:09,638 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:11:09,640 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-dot-product.wvr.c that has 4 procedures, 76 locations, 1 initial locations, 8 loop locations, and 34 error locations. [2025-02-08 14:11:09,640 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:11:09,733 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-08 14:11:09,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 83 transitions, 187 flow [2025-02-08 14:11:09,779 INFO L124 PetriNetUnfolderBase]: 8/80 cut-off events. [2025-02-08 14:11:09,780 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-08 14:11:09,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 80 events. 8/80 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 299 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 66. Up to 2 conditions per place. [2025-02-08 14:11:09,783 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 83 transitions, 187 flow [2025-02-08 14:11:09,785 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 78 transitions, 171 flow [2025-02-08 14:11:09,790 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:11:09,796 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;@7db23c44, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:11:09,797 INFO L334 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2025-02-08 14:11:09,799 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:11:09,799 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-08 14:11:09,799 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:11:09,799 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:09,800 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-08 14:11:09,800 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 52 more)] === [2025-02-08 14:11:09,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:09,803 INFO L85 PathProgramCache]: Analyzing trace with hash 895248, now seen corresponding path program 1 times [2025-02-08 14:11:09,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:09,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250239251] [2025-02-08 14:11:09,808 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:09,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:09,856 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:11:09,869 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:11:09,869 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:09,869 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:09,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:09,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:09,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250239251] [2025-02-08 14:11:09,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250239251] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:09,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:09,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:11:09,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522353159] [2025-02-08 14:11:09,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:09,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:11:09,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:09,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:11:09,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:11:09,977 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 83 [2025-02-08 14:11:09,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 78 transitions, 171 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2025-02-08 14:11:09,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:09,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 83 [2025-02-08 14:11:09,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:11,728 INFO L124 PetriNetUnfolderBase]: 12043/18485 cut-off events. [2025-02-08 14:11:11,729 INFO L125 PetriNetUnfolderBase]: For 696/696 co-relation queries the response was YES. [2025-02-08 14:11:11,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36034 conditions, 18485 events. 12043/18485 cut-off events. For 696/696 co-relation queries the response was YES. Maximal size of possible extension queue 858. Compared 120564 event pairs, 10944 based on Foata normal form. 2/11375 useless extension candidates. Maximal degree in co-relation 34700. Up to 16992 conditions per place. [2025-02-08 14:11:11,868 INFO L140 encePairwiseOnDemand]: 63/83 looper letters, 57 selfloop transitions, 7 changer transitions 0/75 dead transitions. [2025-02-08 14:11:11,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 75 transitions, 293 flow [2025-02-08 14:11:11,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:11:11,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:11:11,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2025-02-08 14:11:11,879 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4006024096385542 [2025-02-08 14:11:11,882 INFO L175 Difference]: Start difference. First operand has 80 places, 78 transitions, 171 flow. Second operand 4 states and 133 transitions. [2025-02-08 14:11:11,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 75 transitions, 293 flow [2025-02-08 14:11:11,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 75 transitions, 284 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-02-08 14:11:11,894 INFO L231 Difference]: Finished difference. Result has 75 places, 75 transitions, 204 flow [2025-02-08 14:11:11,896 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=75, PETRI_TRANSITIONS=75} [2025-02-08 14:11:11,899 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, -5 predicate places. [2025-02-08 14:11:11,900 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 75 transitions, 204 flow [2025-02-08 14:11:11,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2025-02-08 14:11:11,901 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:11,901 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-08 14:11:11,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:11:11,902 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 52 more)] === [2025-02-08 14:11:11,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:11,903 INFO L85 PathProgramCache]: Analyzing trace with hash 901302593, now seen corresponding path program 1 times [2025-02-08 14:11:11,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:11,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558336097] [2025-02-08 14:11:11,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:11,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:11,913 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:11:11,921 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:11:11,921 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:11,921 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:12,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:12,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:12,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558336097] [2025-02-08 14:11:12,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558336097] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:11:12,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723398295] [2025-02-08 14:11:12,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:12,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:12,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:12,022 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:11:12,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 14:11:12,103 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:11:12,112 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:11:12,112 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:12,112 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:12,114 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:11:12,116 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:11:12,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:12,166 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:11:12,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723398295] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:12,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:11:12,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-08 14:11:12,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720425576] [2025-02-08 14:11:12,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:12,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:11:12,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:12,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:11:12,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:11:12,189 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 83 [2025-02-08 14:11:12,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 75 transitions, 204 flow. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 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) [2025-02-08 14:11:12,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:12,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 83 [2025-02-08 14:11:12,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:13,703 INFO L124 PetriNetUnfolderBase]: 12043/18483 cut-off events. [2025-02-08 14:11:13,704 INFO L125 PetriNetUnfolderBase]: For 181/181 co-relation queries the response was YES. [2025-02-08 14:11:13,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35856 conditions, 18483 events. 12043/18483 cut-off events. For 181/181 co-relation queries the response was YES. Maximal size of possible extension queue 858. Compared 120554 event pairs, 10944 based on Foata normal form. 2/11376 useless extension candidates. Maximal degree in co-relation 35806. Up to 16982 conditions per place. [2025-02-08 14:11:13,800 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 50 selfloop transitions, 12 changer transitions 0/73 dead transitions. [2025-02-08 14:11:13,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 73 transitions, 320 flow [2025-02-08 14:11:13,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:11:13,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:11:13,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2025-02-08 14:11:13,803 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2971887550200803 [2025-02-08 14:11:13,803 INFO L175 Difference]: Start difference. First operand has 75 places, 75 transitions, 204 flow. Second operand 6 states and 148 transitions. [2025-02-08 14:11:13,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 73 transitions, 320 flow [2025-02-08 14:11:13,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 73 transitions, 320 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:11:13,806 INFO L231 Difference]: Finished difference. Result has 78 places, 73 transitions, 220 flow [2025-02-08 14:11:13,807 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=220, PETRI_PLACES=78, PETRI_TRANSITIONS=73} [2025-02-08 14:11:13,808 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, -2 predicate places. [2025-02-08 14:11:13,808 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 73 transitions, 220 flow [2025-02-08 14:11:13,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 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) [2025-02-08 14:11:13,808 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:13,809 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-08 14:11:13,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-08 14:11:14,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:14,113 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 52 more)] === [2025-02-08 14:11:14,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:14,115 INFO L85 PathProgramCache]: Analyzing trace with hash -2124389914, now seen corresponding path program 1 times [2025-02-08 14:11:14,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:14,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616673905] [2025-02-08 14:11:14,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:14,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:14,126 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:11:14,140 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:11:14,144 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:14,145 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:14,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:14,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:14,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616673905] [2025-02-08 14:11:14,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616673905] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:11:14,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773728152] [2025-02-08 14:11:14,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:14,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:14,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:14,270 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:11:14,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 14:11:14,340 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:11:14,348 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:11:14,348 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:14,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:14,349 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:11:14,349 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:11:14,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:14,370 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:11:14,402 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:14,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773728152] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:11:14,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:11:14,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-02-08 14:11:14,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596153582] [2025-02-08 14:11:14,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:11:14,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 14:11:14,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:14,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 14:11:14,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-08 14:11:14,449 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 83 [2025-02-08 14:11:14,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 73 transitions, 220 flow. Second operand has 12 states, 12 states have (on average 15.083333333333334) internal successors, (181), 12 states have internal predecessors, (181), 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) [2025-02-08 14:11:14,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:14,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 83 [2025-02-08 14:11:14,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:15,945 INFO L124 PetriNetUnfolderBase]: 12049/18507 cut-off events. [2025-02-08 14:11:15,946 INFO L125 PetriNetUnfolderBase]: For 223/223 co-relation queries the response was YES. [2025-02-08 14:11:15,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35950 conditions, 18507 events. 12049/18507 cut-off events. For 223/223 co-relation queries the response was YES. Maximal size of possible extension queue 858. Compared 120783 event pairs, 10944 based on Foata normal form. 6/11403 useless extension candidates. Maximal degree in co-relation 35808. Up to 16993 conditions per place. [2025-02-08 14:11:16,005 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 55 selfloop transitions, 25 changer transitions 0/91 dead transitions. [2025-02-08 14:11:16,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 91 transitions, 494 flow [2025-02-08 14:11:16,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 14:11:16,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 14:11:16,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 226 transitions. [2025-02-08 14:11:16,009 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.27228915662650605 [2025-02-08 14:11:16,010 INFO L175 Difference]: Start difference. First operand has 78 places, 73 transitions, 220 flow. Second operand 10 states and 226 transitions. [2025-02-08 14:11:16,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 91 transitions, 494 flow [2025-02-08 14:11:16,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 91 transitions, 436 flow, removed 12 selfloop flow, removed 5 redundant places. [2025-02-08 14:11:16,013 INFO L231 Difference]: Finished difference. Result has 85 places, 91 transitions, 360 flow [2025-02-08 14:11:16,014 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=360, PETRI_PLACES=85, PETRI_TRANSITIONS=91} [2025-02-08 14:11:16,014 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 5 predicate places. [2025-02-08 14:11:16,015 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 91 transitions, 360 flow [2025-02-08 14:11:16,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.083333333333334) internal successors, (181), 12 states have internal predecessors, (181), 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) [2025-02-08 14:11:16,015 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:16,015 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:16,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-08 14:11:16,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:16,216 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 52 more)] === [2025-02-08 14:11:16,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:16,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1467137213, now seen corresponding path program 1 times [2025-02-08 14:11:16,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:16,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015444868] [2025-02-08 14:11:16,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:16,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:16,236 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 14:11:16,249 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 14:11:16,253 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:16,253 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:16,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:16,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:16,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015444868] [2025-02-08 14:11:16,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015444868] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:16,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:16,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:11:16,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941317271] [2025-02-08 14:11:16,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:16,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:11:16,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:16,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:11:16,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:11:16,355 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 83 [2025-02-08 14:11:16,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 91 transitions, 360 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2025-02-08 14:11:16,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:16,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 83 [2025-02-08 14:11:16,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:17,415 INFO L124 PetriNetUnfolderBase]: 12049/18523 cut-off events. [2025-02-08 14:11:17,415 INFO L125 PetriNetUnfolderBase]: For 284/284 co-relation queries the response was YES. [2025-02-08 14:11:17,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36019 conditions, 18523 events. 12049/18523 cut-off events. For 284/284 co-relation queries the response was YES. Maximal size of possible extension queue 858. Compared 120924 event pairs, 10944 based on Foata normal form. 4/11419 useless extension candidates. Maximal degree in co-relation 35926. Up to 17008 conditions per place. [2025-02-08 14:11:17,470 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 84 selfloop transitions, 4 changer transitions 0/101 dead transitions. [2025-02-08 14:11:17,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 101 transitions, 613 flow [2025-02-08 14:11:17,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:11:17,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:11:17,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2025-02-08 14:11:17,473 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3686746987951807 [2025-02-08 14:11:17,473 INFO L175 Difference]: Start difference. First operand has 85 places, 91 transitions, 360 flow. Second operand 5 states and 153 transitions. [2025-02-08 14:11:17,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 101 transitions, 613 flow [2025-02-08 14:11:17,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 101 transitions, 580 flow, removed 9 selfloop flow, removed 2 redundant places. [2025-02-08 14:11:17,478 INFO L231 Difference]: Finished difference. Result has 89 places, 92 transitions, 366 flow [2025-02-08 14:11:17,478 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=366, PETRI_PLACES=89, PETRI_TRANSITIONS=92} [2025-02-08 14:11:17,479 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 9 predicate places. [2025-02-08 14:11:17,480 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 92 transitions, 366 flow [2025-02-08 14:11:17,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2025-02-08 14:11:17,480 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:17,480 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:17,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 14:11:17,480 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 52 more)] === [2025-02-08 14:11:17,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:17,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1720599888, now seen corresponding path program 1 times [2025-02-08 14:11:17,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:17,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866279764] [2025-02-08 14:11:17,481 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:17,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:17,490 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 14:11:17,502 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 14:11:17,502 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:17,502 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:17,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:11:17,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:17,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866279764] [2025-02-08 14:11:17,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866279764] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:17,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:17,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 14:11:17,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284000996] [2025-02-08 14:11:17,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:17,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:11:17,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:17,625 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:11:17,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 14:11:17,625 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 83 [2025-02-08 14:11:17,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 92 transitions, 366 flow. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 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) [2025-02-08 14:11:17,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:17,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 83 [2025-02-08 14:11:17,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:19,782 INFO L124 PetriNetUnfolderBase]: 18693/28389 cut-off events. [2025-02-08 14:11:19,783 INFO L125 PetriNetUnfolderBase]: For 430/430 co-relation queries the response was YES. [2025-02-08 14:11:19,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55461 conditions, 28389 events. 18693/28389 cut-off events. For 430/430 co-relation queries the response was YES. Maximal size of possible extension queue 1081. Compared 191890 event pairs, 14283 based on Foata normal form. 0/18355 useless extension candidates. Maximal degree in co-relation 55376. Up to 17013 conditions per place. [2025-02-08 14:11:19,874 INFO L140 encePairwiseOnDemand]: 75/83 looper letters, 170 selfloop transitions, 12 changer transitions 0/195 dead transitions. [2025-02-08 14:11:19,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 195 transitions, 948 flow [2025-02-08 14:11:19,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:11:19,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:11:19,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 269 transitions. [2025-02-08 14:11:19,876 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5401606425702812 [2025-02-08 14:11:19,876 INFO L175 Difference]: Start difference. First operand has 89 places, 92 transitions, 366 flow. Second operand 6 states and 269 transitions. [2025-02-08 14:11:19,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 195 transitions, 948 flow [2025-02-08 14:11:19,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 195 transitions, 944 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-02-08 14:11:19,879 INFO L231 Difference]: Finished difference. Result has 96 places, 96 transitions, 413 flow [2025-02-08 14:11:19,879 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=413, PETRI_PLACES=96, PETRI_TRANSITIONS=96} [2025-02-08 14:11:19,880 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 16 predicate places. [2025-02-08 14:11:19,880 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 96 transitions, 413 flow [2025-02-08 14:11:19,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 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) [2025-02-08 14:11:19,880 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:19,880 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:19,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 14:11:19,880 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 52 more)] === [2025-02-08 14:11:19,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:19,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1798987308, now seen corresponding path program 1 times [2025-02-08 14:11:19,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:19,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332504703] [2025-02-08 14:11:19,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:19,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:19,886 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 14:11:19,890 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 14:11:19,890 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:19,890 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:19,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:11:19,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:19,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332504703] [2025-02-08 14:11:19,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332504703] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:19,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:19,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:11:19,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345923651] [2025-02-08 14:11:19,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:19,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:11:19,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:19,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:11:19,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:11:19,945 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 83 [2025-02-08 14:11:19,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 96 transitions, 413 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2025-02-08 14:11:19,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:19,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 83 [2025-02-08 14:11:19,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:24,001 INFO L124 PetriNetUnfolderBase]: 37405/54805 cut-off events. [2025-02-08 14:11:24,001 INFO L125 PetriNetUnfolderBase]: For 3360/3360 co-relation queries the response was YES. [2025-02-08 14:11:24,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117974 conditions, 54805 events. 37405/54805 cut-off events. For 3360/3360 co-relation queries the response was YES. Maximal size of possible extension queue 1372. Compared 369920 event pairs, 20198 based on Foata normal form. 732/37511 useless extension candidates. Maximal degree in co-relation 117877. Up to 32202 conditions per place. [2025-02-08 14:11:24,323 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 158 selfloop transitions, 5 changer transitions 0/174 dead transitions. [2025-02-08 14:11:24,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 174 transitions, 927 flow [2025-02-08 14:11:24,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:11:24,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:11:24,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 196 transitions. [2025-02-08 14:11:24,325 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5903614457831325 [2025-02-08 14:11:24,325 INFO L175 Difference]: Start difference. First operand has 96 places, 96 transitions, 413 flow. Second operand 4 states and 196 transitions. [2025-02-08 14:11:24,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 174 transitions, 927 flow [2025-02-08 14:11:24,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 174 transitions, 911 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:11:24,498 INFO L231 Difference]: Finished difference. Result has 99 places, 100 transitions, 440 flow [2025-02-08 14:11:24,498 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=440, PETRI_PLACES=99, PETRI_TRANSITIONS=100} [2025-02-08 14:11:24,499 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 19 predicate places. [2025-02-08 14:11:24,499 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 100 transitions, 440 flow [2025-02-08 14:11:24,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2025-02-08 14:11:24,499 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:24,499 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:24,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 14:11:24,499 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 52 more)] === [2025-02-08 14:11:24,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:24,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1313094331, now seen corresponding path program 1 times [2025-02-08 14:11:24,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:24,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852601953] [2025-02-08 14:11:24,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:24,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:24,507 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 14:11:24,513 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 14:11:24,513 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:24,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:24,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:11:24,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:24,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852601953] [2025-02-08 14:11:24,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852601953] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:24,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:24,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 14:11:24,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989205552] [2025-02-08 14:11:24,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:24,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:11:24,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:24,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:11:24,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:11:24,659 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 83 [2025-02-08 14:11:24,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 100 transitions, 440 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2025-02-08 14:11:24,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:24,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 83 [2025-02-08 14:11:24,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:26,985 INFO L124 PetriNetUnfolderBase]: 24485/38969 cut-off events. [2025-02-08 14:11:26,986 INFO L125 PetriNetUnfolderBase]: For 15758/15758 co-relation queries the response was YES. [2025-02-08 14:11:27,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87581 conditions, 38969 events. 24485/38969 cut-off events. For 15758/15758 co-relation queries the response was YES. Maximal size of possible extension queue 1142. Compared 287243 event pairs, 21710 based on Foata normal form. 0/28435 useless extension candidates. Maximal degree in co-relation 87483. Up to 34357 conditions per place. [2025-02-08 14:11:27,207 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 82 selfloop transitions, 1 changer transitions 0/96 dead transitions. [2025-02-08 14:11:27,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 96 transitions, 598 flow [2025-02-08 14:11:27,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:11:27,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:11:27,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2025-02-08 14:11:27,209 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43373493975903615 [2025-02-08 14:11:27,209 INFO L175 Difference]: Start difference. First operand has 99 places, 100 transitions, 440 flow. Second operand 3 states and 108 transitions. [2025-02-08 14:11:27,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 96 transitions, 598 flow [2025-02-08 14:11:27,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 96 transitions, 595 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:11:27,230 INFO L231 Difference]: Finished difference. Result has 96 places, 96 transitions, 431 flow [2025-02-08 14:11:27,230 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=431, PETRI_PLACES=96, PETRI_TRANSITIONS=96} [2025-02-08 14:11:27,231 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 16 predicate places. [2025-02-08 14:11:27,231 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 96 transitions, 431 flow [2025-02-08 14:11:27,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2025-02-08 14:11:27,231 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:27,231 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:27,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 14:11:27,231 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 52 more)] === [2025-02-08 14:11:27,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:27,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1313094328, now seen corresponding path program 1 times [2025-02-08 14:11:27,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:27,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922268458] [2025-02-08 14:11:27,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:27,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:27,247 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 14:11:27,255 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 14:11:27,255 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:27,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:27,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:27,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:27,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922268458] [2025-02-08 14:11:27,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922268458] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:11:27,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038127937] [2025-02-08 14:11:27,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:27,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:27,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:27,384 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:11:27,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 14:11:27,451 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 14:11:27,468 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 14:11:27,468 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:27,468 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:27,469 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 14:11:27,470 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:11:27,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:27,582 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:11:27,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:27,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038127937] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:11:27,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:11:27,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2025-02-08 14:11:27,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280359245] [2025-02-08 14:11:27,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:11:27,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-08 14:11:27,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:27,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-08 14:11:27,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2025-02-08 14:11:27,729 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 83 [2025-02-08 14:11:27,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 96 transitions, 431 flow. Second operand has 17 states, 17 states have (on average 15.705882352941176) internal successors, (267), 17 states have internal predecessors, (267), 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) [2025-02-08 14:11:27,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:27,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 83 [2025-02-08 14:11:27,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:31,069 INFO L124 PetriNetUnfolderBase]: 30350/48358 cut-off events. [2025-02-08 14:11:31,069 INFO L125 PetriNetUnfolderBase]: For 18760/18760 co-relation queries the response was YES. [2025-02-08 14:11:31,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108142 conditions, 48358 events. 30350/48358 cut-off events. For 18760/18760 co-relation queries the response was YES. Maximal size of possible extension queue 1344. Compared 366582 event pairs, 25006 based on Foata normal form. 0/36055 useless extension candidates. Maximal degree in co-relation 108122. Up to 34334 conditions per place. [2025-02-08 14:11:31,370 INFO L140 encePairwiseOnDemand]: 73/83 looper letters, 141 selfloop transitions, 41 changer transitions 0/193 dead transitions. [2025-02-08 14:11:31,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 193 transitions, 1204 flow [2025-02-08 14:11:31,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 14:11:31,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-08 14:11:31,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 313 transitions. [2025-02-08 14:11:31,376 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29008341056533826 [2025-02-08 14:11:31,376 INFO L175 Difference]: Start difference. First operand has 96 places, 96 transitions, 431 flow. Second operand 13 states and 313 transitions. [2025-02-08 14:11:31,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 193 transitions, 1204 flow [2025-02-08 14:11:31,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 193 transitions, 1203 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:11:31,403 INFO L231 Difference]: Finished difference. Result has 111 places, 116 transitions, 696 flow [2025-02-08 14:11:31,403 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=696, PETRI_PLACES=111, PETRI_TRANSITIONS=116} [2025-02-08 14:11:31,404 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 31 predicate places. [2025-02-08 14:11:31,404 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 116 transitions, 696 flow [2025-02-08 14:11:31,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 15.705882352941176) internal successors, (267), 17 states have internal predecessors, (267), 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) [2025-02-08 14:11:31,404 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:31,404 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:31,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 14:11:31,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:31,609 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 52 more)] === [2025-02-08 14:11:31,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:31,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1455251307, now seen corresponding path program 1 times [2025-02-08 14:11:31,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:31,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330842269] [2025-02-08 14:11:31,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:31,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:31,620 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 14:11:31,627 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 14:11:31,627 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:31,628 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:31,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:11:31,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:31,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330842269] [2025-02-08 14:11:31,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330842269] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:11:31,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404427015] [2025-02-08 14:11:31,747 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:31,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:31,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:31,749 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:11:31,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 14:11:31,813 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 14:11:31,828 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 14:11:31,828 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:31,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:31,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 14:11:31,830 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:11:31,907 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 23 treesize of output 7 [2025-02-08 14:11:31,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:11:31,923 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:11:31,966 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 25 treesize of output 9 [2025-02-08 14:11:32,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:11:32,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404427015] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:11:32,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:11:32,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2025-02-08 14:11:32,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011330537] [2025-02-08 14:11:32,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:11:32,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 14:11:32,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:32,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 14:11:32,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2025-02-08 14:11:32,121 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 83 [2025-02-08 14:11:32,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 116 transitions, 696 flow. Second operand has 18 states, 18 states have (on average 15.5) internal successors, (279), 18 states have internal predecessors, (279), 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) [2025-02-08 14:11:32,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:32,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 83 [2025-02-08 14:11:32,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:36,734 INFO L124 PetriNetUnfolderBase]: 40681/63524 cut-off events. [2025-02-08 14:11:36,734 INFO L125 PetriNetUnfolderBase]: For 25322/26592 co-relation queries the response was YES. [2025-02-08 14:11:36,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151526 conditions, 63524 events. 40681/63524 cut-off events. For 25322/26592 co-relation queries the response was YES. Maximal size of possible extension queue 1572. Compared 484572 event pairs, 27006 based on Foata normal form. 0/48083 useless extension candidates. Maximal degree in co-relation 151501. Up to 28366 conditions per place. [2025-02-08 14:11:37,151 INFO L140 encePairwiseOnDemand]: 72/83 looper letters, 155 selfloop transitions, 50 changer transitions 0/216 dead transitions. [2025-02-08 14:11:37,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 216 transitions, 1386 flow [2025-02-08 14:11:37,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 14:11:37,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-08 14:11:37,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 276 transitions. [2025-02-08 14:11:37,156 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36947791164658633 [2025-02-08 14:11:37,156 INFO L175 Difference]: Start difference. First operand has 111 places, 116 transitions, 696 flow. Second operand 9 states and 276 transitions. [2025-02-08 14:11:37,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 216 transitions, 1386 flow [2025-02-08 14:11:37,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 216 transitions, 1375 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-02-08 14:11:37,451 INFO L231 Difference]: Finished difference. Result has 120 places, 121 transitions, 847 flow [2025-02-08 14:11:37,451 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=847, PETRI_PLACES=120, PETRI_TRANSITIONS=121} [2025-02-08 14:11:37,452 INFO L279 CegarLoopForPetriNet]: 80 programPoint places, 40 predicate places. [2025-02-08 14:11:37,452 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 121 transitions, 847 flow [2025-02-08 14:11:37,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 15.5) internal successors, (279), 18 states have internal predecessors, (279), 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) [2025-02-08 14:11:37,453 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:37,453 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-02-08 14:11:37,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-08 14:11:37,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2025-02-08 14:11:37,654 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 52 more)] === [2025-02-08 14:11:37,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:37,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1289867063, now seen corresponding path program 2 times [2025-02-08 14:11:37,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:37,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042624571] [2025-02-08 14:11:37,654 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:11:37,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:37,663 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-08 14:11:37,668 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-02-08 14:11:37,668 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:11:37,669 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:37,697 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:11:37,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:37,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042624571] [2025-02-08 14:11:37,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042624571] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:11:37,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394497296] [2025-02-08 14:11:37,698 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:11:37,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:37,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:37,700 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:11:37,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 14:11:37,760 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-08 14:11:37,766 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-02-08 14:11:37,766 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:11:37,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:37,768 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 14:11:37,769 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:11:37,794 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:11:37,794 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:11:37,812 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:11:37,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394497296] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:11:37,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:11:37,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-02-08 14:11:37,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332245360] [2025-02-08 14:11:37,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:11:37,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:11:37,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:37,812 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:11:37,812 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:11:37,820 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 83 [2025-02-08 14:11:37,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 121 transitions, 847 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2025-02-08 14:11:37,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:37,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 83 [2025-02-08 14:11:37,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand