./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3dfcb4860b3021904fb2e25e7c2a428c9bcb0d82c2290cad723458395a0647ea --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 15:29:48,070 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 15:29:48,124 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-04 15:29:48,130 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 15:29:48,130 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 15:29:48,144 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 15:29:48,144 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 15:29:48,144 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 15:29:48,144 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 15:29:48,145 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 15:29:48,145 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 15:29:48,145 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 15:29:48,145 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 15:29:48,145 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 15:29:48,145 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 15:29:48,145 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 15:29:48,145 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 15:29:48,145 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 15:29:48,145 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 15:29:48,145 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 15:29:48,145 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 15:29:48,145 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 15:29:48,145 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 15:29:48,145 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 15:29:48,146 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-04 15:29:48,146 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 15:29:48,146 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 15:29:48,146 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 15:29:48,146 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 15:29:48,146 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 15:29:48,146 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 15:29:48,146 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 15:29:48,146 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 15:29:48,146 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 15:29:48,146 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:29:48,146 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 15:29:48,146 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 15:29:48,146 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 15:29:48,146 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 15:29:48,146 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 15:29:48,146 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 15:29:48,146 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 15:29:48,146 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 15:29:48,146 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 15:29:48,147 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 15:29:48,147 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/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 -> 3dfcb4860b3021904fb2e25e7c2a428c9bcb0d82c2290cad723458395a0647ea [2025-03-04 15:29:48,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 15:29:48,390 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 15:29:48,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 15:29:48,393 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 15:29:48,394 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 15:29:48,394 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2025-03-04 15:29:49,536 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f5db9e9d/725b265fa1da4fe1acff11067752baa6/FLAG7c4f1f3d8 [2025-03-04 15:29:49,771 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 15:29:49,772 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2025-03-04 15:29:49,777 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f5db9e9d/725b265fa1da4fe1acff11067752baa6/FLAG7c4f1f3d8 [2025-03-04 15:29:49,792 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f5db9e9d/725b265fa1da4fe1acff11067752baa6 [2025-03-04 15:29:49,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 15:29:49,796 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 15:29:49,797 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 15:29:49,797 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 15:29:49,801 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 15:29:49,802 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:29:49" (1/1) ... [2025-03-04 15:29:49,804 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d307f50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:49, skipping insertion in model container [2025-03-04 15:29:49,804 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:29:49" (1/1) ... [2025-03-04 15:29:49,820 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 15:29:49,976 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:29:49,988 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 15:29:50,025 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:29:50,043 INFO L204 MainTranslator]: Completed translation [2025-03-04 15:29:50,044 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:50 WrapperNode [2025-03-04 15:29:50,045 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 15:29:50,046 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 15:29:50,046 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 15:29:50,046 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 15:29:50,050 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:50" (1/1) ... [2025-03-04 15:29:50,061 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:50" (1/1) ... [2025-03-04 15:29:50,088 INFO L138 Inliner]: procedures = 27, calls = 68, calls flagged for inlining = 29, calls inlined = 35, statements flattened = 408 [2025-03-04 15:29:50,092 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 15:29:50,093 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 15:29:50,093 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 15:29:50,093 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 15:29:50,099 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:50" (1/1) ... [2025-03-04 15:29:50,100 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:50" (1/1) ... [2025-03-04 15:29:50,102 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:50" (1/1) ... [2025-03-04 15:29:50,125 INFO L175 MemorySlicer]: Split 24 memory accesses to 4 slices as follows [2, 16, 3, 3]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 6 writes are split as follows [0, 4, 1, 1]. [2025-03-04 15:29:50,129 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:50" (1/1) ... [2025-03-04 15:29:50,130 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:50" (1/1) ... [2025-03-04 15:29:50,144 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:50" (1/1) ... [2025-03-04 15:29:50,145 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:50" (1/1) ... [2025-03-04 15:29:50,151 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:50" (1/1) ... [2025-03-04 15:29:50,157 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:50" (1/1) ... [2025-03-04 15:29:50,161 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 15:29:50,162 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 15:29:50,162 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 15:29:50,162 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 15:29:50,163 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:50" (1/1) ... [2025-03-04 15:29:50,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:29:50,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:29:50,190 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 15:29:50,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 15:29:50,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 15:29:50,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-04 15:29:50,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-04 15:29:50,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-04 15:29:50,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-04 15:29:50,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-04 15:29:50,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-04 15:29:50,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-04 15:29:50,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-04 15:29:50,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-04 15:29:50,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-04 15:29:50,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-04 15:29:50,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-04 15:29:50,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-04 15:29:50,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-04 15:29:50,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-04 15:29:50,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-04 15:29:50,208 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-04 15:29:50,208 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-04 15:29:50,208 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-04 15:29:50,208 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-04 15:29:50,208 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-04 15:29:50,208 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-04 15:29:50,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 15:29:50,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 15:29:50,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-04 15:29:50,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-04 15:29:50,209 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-04 15:29:50,209 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-04 15:29:50,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 15:29:50,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 15:29:50,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 15:29:50,210 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 15:29:50,308 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 15:29:50,310 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 15:29:50,815 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 15:29:50,815 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 15:29:51,205 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 15:29:51,205 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 15:29:51,206 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:29:51 BoogieIcfgContainer [2025-03-04 15:29:51,206 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 15:29:51,207 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 15:29:51,208 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 15:29:51,212 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 15:29:51,212 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 03:29:49" (1/3) ... [2025-03-04 15:29:51,213 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@519512c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:29:51, skipping insertion in model container [2025-03-04 15:29:51,214 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:29:50" (2/3) ... [2025-03-04 15:29:51,214 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@519512c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:29:51, skipping insertion in model container [2025-03-04 15:29:51,214 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:29:51" (3/3) ... [2025-03-04 15:29:51,215 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons-eq.wvr.c [2025-03-04 15:29:51,229 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 15:29:51,230 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-prod-cons-eq.wvr.c that has 4 procedures, 69 locations, 1 initial locations, 9 loop locations, and 24 error locations. [2025-03-04 15:29:51,231 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 15:29:51,306 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-04 15:29:51,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 77 transitions, 175 flow [2025-03-04 15:29:51,371 INFO L124 PetriNetUnfolderBase]: 9/74 cut-off events. [2025-03-04 15:29:51,372 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-04 15:29:51,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 74 events. 9/74 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 242 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2025-03-04 15:29:51,376 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 77 transitions, 175 flow [2025-03-04 15:29:51,379 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 72 transitions, 159 flow [2025-03-04 15:29:51,384 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 15:29:51,394 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;@1d02ad23, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 15:29:51,394 INFO L334 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2025-03-04 15:29:51,396 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 15:29:51,397 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-04 15:29:51,397 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 15:29:51,397 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:29:51,397 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-04 15:29:51,397 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-04 15:29:51,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:29:51,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1171568, now seen corresponding path program 1 times [2025-03-04 15:29:51,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:29:51,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867309319] [2025-03-04 15:29:51,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:29:51,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:29:51,463 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-04 15:29:51,487 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-04 15:29:51,489 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:29:51,489 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:51,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:29:51,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:29:51,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867309319] [2025-03-04 15:29:51,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867309319] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:29:51,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:29:51,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:29:51,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612894083] [2025-03-04 15:29:51,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:29:51,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:29:51,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:29:51,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:29:51,651 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:29:51,679 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 77 [2025-03-04 15:29:51,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 72 transitions, 159 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2025-03-04 15:29:51,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:29:51,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 77 [2025-03-04 15:29:51,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:29:52,106 INFO L124 PetriNetUnfolderBase]: 1306/1872 cut-off events. [2025-03-04 15:29:52,106 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2025-03-04 15:29:52,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3796 conditions, 1872 events. 1306/1872 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 9118 event pairs, 738 based on Foata normal form. 4/1130 useless extension candidates. Maximal degree in co-relation 3540. Up to 1761 conditions per place. [2025-03-04 15:29:52,118 INFO L140 encePairwiseOnDemand]: 49/77 looper letters, 48 selfloop transitions, 14 changer transitions 1/78 dead transitions. [2025-03-04 15:29:52,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 78 transitions, 297 flow [2025-03-04 15:29:52,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:29:52,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:29:52,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 149 transitions. [2025-03-04 15:29:52,127 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4837662337662338 [2025-03-04 15:29:52,127 INFO L175 Difference]: Start difference. First operand has 73 places, 72 transitions, 159 flow. Second operand 4 states and 149 transitions. [2025-03-04 15:29:52,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 78 transitions, 297 flow [2025-03-04 15:29:52,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 78 transitions, 288 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-04 15:29:52,139 INFO L231 Difference]: Finished difference. Result has 68 places, 77 transitions, 255 flow [2025-03-04 15:29:52,140 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=255, PETRI_PLACES=68, PETRI_TRANSITIONS=77} [2025-03-04 15:29:52,143 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, -5 predicate places. [2025-03-04 15:29:52,143 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 77 transitions, 255 flow [2025-03-04 15:29:52,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2025-03-04 15:29:52,143 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:29:52,143 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-04 15:29:52,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 15:29:52,144 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-04 15:29:52,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:29:52,144 INFO L85 PathProgramCache]: Analyzing trace with hash 543546296, now seen corresponding path program 1 times [2025-03-04 15:29:52,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:29:52,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663760542] [2025-03-04 15:29:52,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:29:52,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:29:52,155 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 15:29:52,171 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 15:29:52,171 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:29:52,171 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:52,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:29:52,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:29:52,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663760542] [2025-03-04 15:29:52,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663760542] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:29:52,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257089994] [2025-03-04 15:29:52,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:29:52,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:29:52,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:29:52,291 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:29:52,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 15:29:52,372 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 15:29:52,385 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 15:29:52,385 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:29:52,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:52,387 INFO L256 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:29:52,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:29:52,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:29:52,425 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 15:29:52,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257089994] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:29:52,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 15:29:52,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-04 15:29:52,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047441857] [2025-03-04 15:29:52,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:29:52,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:29:52,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:29:52,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:29:52,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-04 15:29:52,458 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 77 [2025-03-04 15:29:52,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 77 transitions, 255 flow. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:52,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:29:52,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 77 [2025-03-04 15:29:52,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:29:52,853 INFO L124 PetriNetUnfolderBase]: 1302/1861 cut-off events. [2025-03-04 15:29:52,853 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2025-03-04 15:29:52,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3787 conditions, 1861 events. 1302/1861 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 9051 event pairs, 736 based on Foata normal form. 4/1128 useless extension candidates. Maximal degree in co-relation 3692. Up to 1734 conditions per place. [2025-03-04 15:29:52,868 INFO L140 encePairwiseOnDemand]: 59/77 looper letters, 34 selfloop transitions, 24 changer transitions 0/73 dead transitions. [2025-03-04 15:29:52,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 73 transitions, 355 flow [2025-03-04 15:29:52,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 15:29:52,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 15:29:52,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 170 transitions. [2025-03-04 15:29:52,870 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36796536796536794 [2025-03-04 15:29:52,870 INFO L175 Difference]: Start difference. First operand has 68 places, 77 transitions, 255 flow. Second operand 6 states and 170 transitions. [2025-03-04 15:29:52,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 73 transitions, 355 flow [2025-03-04 15:29:52,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 73 transitions, 355 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 15:29:52,872 INFO L231 Difference]: Finished difference. Result has 68 places, 73 transitions, 287 flow [2025-03-04 15:29:52,872 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=287, PETRI_PLACES=68, PETRI_TRANSITIONS=73} [2025-03-04 15:29:52,875 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, -5 predicate places. [2025-03-04 15:29:52,875 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 73 transitions, 287 flow [2025-03-04 15:29:52,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:52,876 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:29:52,876 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-04 15:29:52,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 15:29:53,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:29:53,077 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-04 15:29:53,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:29:53,077 INFO L85 PathProgramCache]: Analyzing trace with hash 545004409, now seen corresponding path program 1 times [2025-03-04 15:29:53,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:29:53,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800256884] [2025-03-04 15:29:53,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:29:53,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:29:53,087 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 15:29:53,100 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 15:29:53,101 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:29:53,101 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:53,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:29:53,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:29:53,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800256884] [2025-03-04 15:29:53,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800256884] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:29:53,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:29:53,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:29:53,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827899338] [2025-03-04 15:29:53,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:29:53,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:29:53,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:29:53,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:29:53,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:29:53,169 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 77 [2025-03-04 15:29:53,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 73 transitions, 287 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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) [2025-03-04 15:29:53,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:29:53,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 77 [2025-03-04 15:29:53,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:29:53,391 INFO L124 PetriNetUnfolderBase]: 1303/1865 cut-off events. [2025-03-04 15:29:53,391 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2025-03-04 15:29:53,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3817 conditions, 1865 events. 1303/1865 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 9074 event pairs, 736 based on Foata normal form. 1/1132 useless extension candidates. Maximal degree in co-relation 3705. Up to 1758 conditions per place. [2025-03-04 15:29:53,398 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 54 selfloop transitions, 5 changer transitions 0/76 dead transitions. [2025-03-04 15:29:53,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 76 transitions, 411 flow [2025-03-04 15:29:53,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:29:53,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:29:53,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2025-03-04 15:29:53,400 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4707792207792208 [2025-03-04 15:29:53,400 INFO L175 Difference]: Start difference. First operand has 68 places, 73 transitions, 287 flow. Second operand 4 states and 145 transitions. [2025-03-04 15:29:53,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 76 transitions, 411 flow [2025-03-04 15:29:53,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 76 transitions, 355 flow, removed 6 selfloop flow, removed 5 redundant places. [2025-03-04 15:29:53,402 INFO L231 Difference]: Finished difference. Result has 68 places, 76 transitions, 263 flow [2025-03-04 15:29:53,402 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=263, PETRI_PLACES=68, PETRI_TRANSITIONS=76} [2025-03-04 15:29:53,403 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, -5 predicate places. [2025-03-04 15:29:53,403 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 76 transitions, 263 flow [2025-03-04 15:29:53,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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) [2025-03-04 15:29:53,403 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:29:53,403 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-04 15:29:53,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 15:29:53,403 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-04 15:29:53,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:29:53,404 INFO L85 PathProgramCache]: Analyzing trace with hash -329932899, now seen corresponding path program 1 times [2025-03-04 15:29:53,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:29:53,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066150176] [2025-03-04 15:29:53,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:29:53,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:29:53,410 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 15:29:53,414 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 15:29:53,414 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:29:53,414 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:53,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:29:53,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:29:53,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066150176] [2025-03-04 15:29:53,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066150176] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:29:53,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796916763] [2025-03-04 15:29:53,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:29:53,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:29:53,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:29:53,480 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:29:53,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 15:29:53,547 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 15:29:53,561 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 15:29:53,561 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:29:53,561 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:53,562 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:29:53,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:29:53,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:29:53,585 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:29:53,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:29:53,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796916763] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:29:53,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:29:53,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-03-04 15:29:53,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765315665] [2025-03-04 15:29:53,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:29:53,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-04 15:29:53,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:29:53,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-04 15:29:53,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-04 15:29:53,667 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 77 [2025-03-04 15:29:53,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 76 transitions, 263 flow. Second operand has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 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) [2025-03-04 15:29:53,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:29:53,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 77 [2025-03-04 15:29:53,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:29:54,044 INFO L124 PetriNetUnfolderBase]: 1315/1913 cut-off events. [2025-03-04 15:29:54,044 INFO L125 PetriNetUnfolderBase]: For 95/95 co-relation queries the response was YES. [2025-03-04 15:29:54,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3937 conditions, 1913 events. 1315/1913 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 9550 event pairs, 736 based on Foata normal form. 12/1182 useless extension candidates. Maximal degree in co-relation 3908. Up to 1759 conditions per place. [2025-03-04 15:29:54,054 INFO L140 encePairwiseOnDemand]: 59/77 looper letters, 47 selfloop transitions, 50 changer transitions 0/112 dead transitions. [2025-03-04 15:29:54,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 112 transitions, 634 flow [2025-03-04 15:29:54,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 15:29:54,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-04 15:29:54,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 286 transitions. [2025-03-04 15:29:54,056 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144 [2025-03-04 15:29:54,056 INFO L175 Difference]: Start difference. First operand has 68 places, 76 transitions, 263 flow. Second operand 10 states and 286 transitions. [2025-03-04 15:29:54,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 112 transitions, 634 flow [2025-03-04 15:29:54,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 112 transitions, 627 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:29:54,061 INFO L231 Difference]: Finished difference. Result has 79 places, 112 transitions, 601 flow [2025-03-04 15:29:54,062 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=601, PETRI_PLACES=79, PETRI_TRANSITIONS=112} [2025-03-04 15:29:54,076 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 6 predicate places. [2025-03-04 15:29:54,076 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 112 transitions, 601 flow [2025-03-04 15:29:54,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 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) [2025-03-04 15:29:54,076 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:29:54,076 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:29:54,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-04 15:29:54,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2025-03-04 15:29:54,277 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-04 15:29:54,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:29:54,277 INFO L85 PathProgramCache]: Analyzing trace with hash -236652909, now seen corresponding path program 1 times [2025-03-04 15:29:54,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:29:54,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85252226] [2025-03-04 15:29:54,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:29:54,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:29:54,289 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 15:29:54,297 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 15:29:54,298 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:29:54,298 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:54,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:29:54,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:29:54,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85252226] [2025-03-04 15:29:54,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85252226] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:29:54,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:29:54,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:29:54,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945960700] [2025-03-04 15:29:54,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:29:54,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:29:54,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:29:54,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:29:54,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:29:54,368 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 77 [2025-03-04 15:29:54,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 112 transitions, 601 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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) [2025-03-04 15:29:54,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:29:54,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 77 [2025-03-04 15:29:54,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:29:54,625 INFO L124 PetriNetUnfolderBase]: 1321/1938 cut-off events. [2025-03-04 15:29:54,625 INFO L125 PetriNetUnfolderBase]: For 199/199 co-relation queries the response was YES. [2025-03-04 15:29:54,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4103 conditions, 1938 events. 1321/1938 cut-off events. For 199/199 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 9714 event pairs, 736 based on Foata normal form. 1/1205 useless extension candidates. Maximal degree in co-relation 4072. Up to 1797 conditions per place. [2025-03-04 15:29:54,638 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 104 selfloop transitions, 9 changer transitions 0/130 dead transitions. [2025-03-04 15:29:54,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 130 transitions, 940 flow [2025-03-04 15:29:54,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:29:54,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:29:54,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 148 transitions. [2025-03-04 15:29:54,640 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4805194805194805 [2025-03-04 15:29:54,640 INFO L175 Difference]: Start difference. First operand has 79 places, 112 transitions, 601 flow. Second operand 4 states and 148 transitions. [2025-03-04 15:29:54,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 130 transitions, 940 flow [2025-03-04 15:29:54,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 130 transitions, 881 flow, removed 15 selfloop flow, removed 2 redundant places. [2025-03-04 15:29:54,647 INFO L231 Difference]: Finished difference. Result has 82 places, 119 transitions, 632 flow [2025-03-04 15:29:54,648 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=553, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=632, PETRI_PLACES=82, PETRI_TRANSITIONS=119} [2025-03-04 15:29:54,649 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 9 predicate places. [2025-03-04 15:29:54,650 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 119 transitions, 632 flow [2025-03-04 15:29:54,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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) [2025-03-04 15:29:54,650 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:29:54,650 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:29:54,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-04 15:29:54,650 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-04 15:29:54,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:29:54,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1251089589, now seen corresponding path program 1 times [2025-03-04 15:29:54,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:29:54,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025125102] [2025-03-04 15:29:54,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:29:54,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:29:54,662 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 15:29:54,676 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 15:29:54,676 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:29:54,676 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:54,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 15:29:54,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:29:54,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025125102] [2025-03-04 15:29:54,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025125102] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:29:54,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:29:54,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 15:29:54,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275585549] [2025-03-04 15:29:54,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:29:54,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 15:29:54,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:29:54,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 15:29:54,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 15:29:54,817 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2025-03-04 15:29:54,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 119 transitions, 632 flow. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:54,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:29:54,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2025-03-04 15:29:54,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:29:55,184 INFO L124 PetriNetUnfolderBase]: 1815/2803 cut-off events. [2025-03-04 15:29:55,184 INFO L125 PetriNetUnfolderBase]: For 224/224 co-relation queries the response was YES. [2025-03-04 15:29:55,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5991 conditions, 2803 events. 1815/2803 cut-off events. For 224/224 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 16589 event pairs, 1176 based on Foata normal form. 39/1884 useless extension candidates. Maximal degree in co-relation 5956. Up to 1780 conditions per place. [2025-03-04 15:29:55,198 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 148 selfloop transitions, 13 changer transitions 0/180 dead transitions. [2025-03-04 15:29:55,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 180 transitions, 1280 flow [2025-03-04 15:29:55,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 15:29:55,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 15:29:55,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 208 transitions. [2025-03-04 15:29:55,199 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5402597402597402 [2025-03-04 15:29:55,199 INFO L175 Difference]: Start difference. First operand has 82 places, 119 transitions, 632 flow. Second operand 5 states and 208 transitions. [2025-03-04 15:29:55,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 180 transitions, 1280 flow [2025-03-04 15:29:55,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 180 transitions, 1273 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:29:55,204 INFO L231 Difference]: Finished difference. Result has 87 places, 125 transitions, 726 flow [2025-03-04 15:29:55,204 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=726, PETRI_PLACES=87, PETRI_TRANSITIONS=125} [2025-03-04 15:29:55,206 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 14 predicate places. [2025-03-04 15:29:55,206 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 125 transitions, 726 flow [2025-03-04 15:29:55,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:55,206 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:29:55,207 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:29:55,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-04 15:29:55,207 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-04 15:29:55,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:29:55,207 INFO L85 PathProgramCache]: Analyzing trace with hash 211546962, now seen corresponding path program 1 times [2025-03-04 15:29:55,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:29:55,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546143756] [2025-03-04 15:29:55,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:29:55,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:29:55,216 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 15:29:55,225 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 15:29:55,225 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:29:55,225 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:55,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:29:55,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:29:55,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546143756] [2025-03-04 15:29:55,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546143756] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:29:55,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:29:55,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-04 15:29:55,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581681843] [2025-03-04 15:29:55,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:29:55,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 15:29:55,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:29:55,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 15:29:55,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 15:29:55,276 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2025-03-04 15:29:55,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 125 transitions, 726 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2025-03-04 15:29:55,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:29:55,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2025-03-04 15:29:55,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:29:55,531 INFO L124 PetriNetUnfolderBase]: 1417/2248 cut-off events. [2025-03-04 15:29:55,531 INFO L125 PetriNetUnfolderBase]: For 439/439 co-relation queries the response was YES. [2025-03-04 15:29:55,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5201 conditions, 2248 events. 1417/2248 cut-off events. For 439/439 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 11688 event pairs, 405 based on Foata normal form. 38/1883 useless extension candidates. Maximal degree in co-relation 5163. Up to 1603 conditions per place. [2025-03-04 15:29:55,550 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 115 selfloop transitions, 2 changer transitions 2/138 dead transitions. [2025-03-04 15:29:55,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 138 transitions, 996 flow [2025-03-04 15:29:55,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 15:29:55,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 15:29:55,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 139 transitions. [2025-03-04 15:29:55,551 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6017316017316018 [2025-03-04 15:29:55,551 INFO L175 Difference]: Start difference. First operand has 87 places, 125 transitions, 726 flow. Second operand 3 states and 139 transitions. [2025-03-04 15:29:55,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 138 transitions, 996 flow [2025-03-04 15:29:55,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 138 transitions, 988 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-03-04 15:29:55,556 INFO L231 Difference]: Finished difference. Result has 89 places, 126 transitions, 740 flow [2025-03-04 15:29:55,556 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=740, PETRI_PLACES=89, PETRI_TRANSITIONS=126} [2025-03-04 15:29:55,556 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 16 predicate places. [2025-03-04 15:29:55,557 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 126 transitions, 740 flow [2025-03-04 15:29:55,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2025-03-04 15:29:55,557 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:29:55,557 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:29:55,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-04 15:29:55,557 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-04 15:29:55,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:29:55,558 INFO L85 PathProgramCache]: Analyzing trace with hash 211546963, now seen corresponding path program 1 times [2025-03-04 15:29:55,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:29:55,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053788264] [2025-03-04 15:29:55,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:29:55,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:29:55,571 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 15:29:55,576 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 15:29:55,577 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:29:55,577 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:55,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:29:55,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:29:55,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053788264] [2025-03-04 15:29:55,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053788264] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:29:55,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:29:55,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-04 15:29:55,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099571244] [2025-03-04 15:29:55,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:29:55,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 15:29:55,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:29:55,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 15:29:55,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 15:29:55,629 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2025-03-04 15:29:55,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 126 transitions, 740 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2025-03-04 15:29:55,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:29:55,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2025-03-04 15:29:55,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:29:55,886 INFO L124 PetriNetUnfolderBase]: 1336/2115 cut-off events. [2025-03-04 15:29:55,886 INFO L125 PetriNetUnfolderBase]: For 569/569 co-relation queries the response was YES. [2025-03-04 15:29:55,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5426 conditions, 2115 events. 1336/2115 cut-off events. For 569/569 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 10662 event pairs, 334 based on Foata normal form. 40/1847 useless extension candidates. Maximal degree in co-relation 5387. Up to 1603 conditions per place. [2025-03-04 15:29:55,898 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 114 selfloop transitions, 2 changer transitions 2/137 dead transitions. [2025-03-04 15:29:55,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 137 transitions, 1004 flow [2025-03-04 15:29:55,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 15:29:55,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 15:29:55,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 133 transitions. [2025-03-04 15:29:55,899 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5757575757575758 [2025-03-04 15:29:55,899 INFO L175 Difference]: Start difference. First operand has 89 places, 126 transitions, 740 flow. Second operand 3 states and 133 transitions. [2025-03-04 15:29:55,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 137 transitions, 1004 flow [2025-03-04 15:29:55,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 137 transitions, 1002 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:29:55,905 INFO L231 Difference]: Finished difference. Result has 91 places, 126 transitions, 746 flow [2025-03-04 15:29:55,906 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=746, PETRI_PLACES=91, PETRI_TRANSITIONS=126} [2025-03-04 15:29:55,908 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 18 predicate places. [2025-03-04 15:29:55,909 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 126 transitions, 746 flow [2025-03-04 15:29:55,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2025-03-04 15:29:55,909 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:29:55,909 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:29:55,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-04 15:29:55,909 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-04 15:29:55,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:29:55,910 INFO L85 PathProgramCache]: Analyzing trace with hash -190419798, now seen corresponding path program 1 times [2025-03-04 15:29:55,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:29:55,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738198650] [2025-03-04 15:29:55,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:29:55,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:29:55,922 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-04 15:29:55,934 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-04 15:29:55,934 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:29:55,934 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:56,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:29:56,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:29:56,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738198650] [2025-03-04 15:29:56,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738198650] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:29:56,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174033023] [2025-03-04 15:29:56,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:29:56,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:29:56,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:29:56,028 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:29:56,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 15:29:56,112 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-04 15:29:56,140 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-04 15:29:56,140 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:29:56,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:56,141 INFO L256 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:29:56,143 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:29:56,168 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:29:56,168 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 15:29:56,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174033023] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:29:56,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 15:29:56,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-04 15:29:56,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750946291] [2025-03-04 15:29:56,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:29:56,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:29:56,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:29:56,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:29:56,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-04 15:29:56,177 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 77 [2025-03-04 15:29:56,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 126 transitions, 746 flow. Second operand has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 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) [2025-03-04 15:29:56,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:29:56,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 77 [2025-03-04 15:29:56,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:29:56,514 INFO L124 PetriNetUnfolderBase]: 1315/2094 cut-off events. [2025-03-04 15:29:56,514 INFO L125 PetriNetUnfolderBase]: For 680/680 co-relation queries the response was YES. [2025-03-04 15:29:56,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5462 conditions, 2094 events. 1315/2094 cut-off events. For 680/680 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 11054 event pairs, 923 based on Foata normal form. 2/1784 useless extension candidates. Maximal degree in co-relation 5422. Up to 1894 conditions per place. [2025-03-04 15:29:56,521 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 102 selfloop transitions, 17 changer transitions 0/136 dead transitions. [2025-03-04 15:29:56,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 136 transitions, 1053 flow [2025-03-04 15:29:56,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 15:29:56,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 15:29:56,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 194 transitions. [2025-03-04 15:29:56,523 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4199134199134199 [2025-03-04 15:29:56,523 INFO L175 Difference]: Start difference. First operand has 91 places, 126 transitions, 746 flow. Second operand 6 states and 194 transitions. [2025-03-04 15:29:56,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 136 transitions, 1053 flow [2025-03-04 15:29:56,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 136 transitions, 1049 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 15:29:56,527 INFO L231 Difference]: Finished difference. Result has 93 places, 125 transitions, 772 flow [2025-03-04 15:29:56,528 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=772, PETRI_PLACES=93, PETRI_TRANSITIONS=125} [2025-03-04 15:29:56,528 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 20 predicate places. [2025-03-04 15:29:56,528 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 125 transitions, 772 flow [2025-03-04 15:29:56,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 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) [2025-03-04 15:29:56,529 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:29:56,529 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:29:56,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-04 15:29:56,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:29:56,729 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-04 15:29:56,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:29:56,730 INFO L85 PathProgramCache]: Analyzing trace with hash 362226102, now seen corresponding path program 1 times [2025-03-04 15:29:56,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:29:56,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490052170] [2025-03-04 15:29:56,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:29:56,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:29:56,738 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-04 15:29:56,744 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-04 15:29:56,744 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:29:56,744 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:56,805 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 15:29:56,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:29:56,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490052170] [2025-03-04 15:29:56,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490052170] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:29:56,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158129125] [2025-03-04 15:29:56,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:29:56,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:29:56,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:29:56,811 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:29:56,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 15:29:56,882 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-04 15:29:56,901 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-04 15:29:56,901 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:29:56,901 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:56,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-04 15:29:56,904 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:29:57,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:29:57,008 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:29:57,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:29:57,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158129125] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:29:57,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:29:57,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2025-03-04 15:29:57,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245733282] [2025-03-04 15:29:57,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:29:57,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-04 15:29:57,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:29:57,111 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-04 15:29:57,111 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2025-03-04 15:29:57,218 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 77 [2025-03-04 15:29:57,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 125 transitions, 772 flow. Second operand has 19 states, 19 states have (on average 17.42105263157895) internal successors, (331), 19 states have internal predecessors, (331), 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) [2025-03-04 15:29:57,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:29:57,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 77 [2025-03-04 15:29:57,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:29:57,984 INFO L124 PetriNetUnfolderBase]: 2473/3821 cut-off events. [2025-03-04 15:29:57,984 INFO L125 PetriNetUnfolderBase]: For 1140/1140 co-relation queries the response was YES. [2025-03-04 15:29:57,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9886 conditions, 3821 events. 2473/3821 cut-off events. For 1140/1140 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 21704 event pairs, 1729 based on Foata normal form. 2/3231 useless extension candidates. Maximal degree in co-relation 9832. Up to 1924 conditions per place. [2025-03-04 15:29:58,000 INFO L140 encePairwiseOnDemand]: 62/77 looper letters, 111 selfloop transitions, 76 changer transitions 0/199 dead transitions. [2025-03-04 15:29:58,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 199 transitions, 1616 flow [2025-03-04 15:29:58,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-04 15:29:58,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-03-04 15:29:58,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 391 transitions. [2025-03-04 15:29:58,004 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2821067821067821 [2025-03-04 15:29:58,004 INFO L175 Difference]: Start difference. First operand has 93 places, 125 transitions, 772 flow. Second operand 18 states and 391 transitions. [2025-03-04 15:29:58,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 199 transitions, 1616 flow [2025-03-04 15:29:58,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 199 transitions, 1534 flow, removed 12 selfloop flow, removed 4 redundant places. [2025-03-04 15:29:58,011 INFO L231 Difference]: Finished difference. Result has 107 places, 157 transitions, 1237 flow [2025-03-04 15:29:58,011 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=727, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1237, PETRI_PLACES=107, PETRI_TRANSITIONS=157} [2025-03-04 15:29:58,012 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 34 predicate places. [2025-03-04 15:29:58,012 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 157 transitions, 1237 flow [2025-03-04 15:29:58,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 17.42105263157895) internal successors, (331), 19 states have internal predecessors, (331), 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) [2025-03-04 15:29:58,012 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:29:58,013 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:29:58,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-04 15:29:58,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:29:58,213 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-04 15:29:58,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:29:58,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1608045309, now seen corresponding path program 1 times [2025-03-04 15:29:58,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:29:58,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177111368] [2025-03-04 15:29:58,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:29:58,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:29:58,222 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-04 15:29:58,231 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 15:29:58,231 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:29:58,231 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:58,295 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:29:58,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:29:58,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177111368] [2025-03-04 15:29:58,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177111368] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:29:58,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116131089] [2025-03-04 15:29:58,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:29:58,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:29:58,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:29:58,298 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:29:58,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-04 15:29:58,374 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-04 15:29:58,397 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 15:29:58,397 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:29:58,397 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:58,399 INFO L256 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:29:58,400 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:29:58,418 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:29:58,419 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:29:58,447 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:29:58,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116131089] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:29:58,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:29:58,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-04 15:29:58,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39563089] [2025-03-04 15:29:58,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:29:58,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-04 15:29:58,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:29:58,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-04 15:29:58,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-04 15:29:58,457 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 77 [2025-03-04 15:29:58,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 157 transitions, 1237 flow. Second operand has 12 states, 12 states have (on average 25.833333333333332) internal successors, (310), 12 states have internal predecessors, (310), 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) [2025-03-04 15:29:58,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:29:58,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 77 [2025-03-04 15:29:58,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:29:59,020 INFO L124 PetriNetUnfolderBase]: 2548/4083 cut-off events. [2025-03-04 15:29:59,021 INFO L125 PetriNetUnfolderBase]: For 1834/1834 co-relation queries the response was YES. [2025-03-04 15:29:59,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10969 conditions, 4083 events. 2548/4083 cut-off events. For 1834/1834 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 23841 event pairs, 1744 based on Foata normal form. 9/3495 useless extension candidates. Maximal degree in co-relation 10910. Up to 3611 conditions per place. [2025-03-04 15:29:59,044 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 212 selfloop transitions, 34 changer transitions 0/262 dead transitions. [2025-03-04 15:29:59,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 262 transitions, 2665 flow [2025-03-04 15:29:59,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 15:29:59,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-04 15:29:59,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 310 transitions. [2025-03-04 15:29:59,047 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4025974025974026 [2025-03-04 15:29:59,047 INFO L175 Difference]: Start difference. First operand has 107 places, 157 transitions, 1237 flow. Second operand 10 states and 310 transitions. [2025-03-04 15:29:59,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 262 transitions, 2665 flow [2025-03-04 15:29:59,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 262 transitions, 2575 flow, removed 5 selfloop flow, removed 5 redundant places. [2025-03-04 15:29:59,057 INFO L231 Difference]: Finished difference. Result has 114 places, 178 transitions, 1385 flow [2025-03-04 15:29:59,057 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1147, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1385, PETRI_PLACES=114, PETRI_TRANSITIONS=178} [2025-03-04 15:29:59,058 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 41 predicate places. [2025-03-04 15:29:59,058 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 178 transitions, 1385 flow [2025-03-04 15:29:59,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 25.833333333333332) internal successors, (310), 12 states have internal predecessors, (310), 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) [2025-03-04 15:29:59,058 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:29:59,058 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-03-04 15:29:59,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-04 15:29:59,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-04 15:29:59,259 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-04 15:29:59,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:29:59,259 INFO L85 PathProgramCache]: Analyzing trace with hash 452164581, now seen corresponding path program 2 times [2025-03-04 15:29:59,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:29:59,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662331351] [2025-03-04 15:29:59,260 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:29:59,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:29:59,269 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-04 15:29:59,276 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-03-04 15:29:59,277 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 15:29:59,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:59,303 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-04 15:29:59,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:29:59,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662331351] [2025-03-04 15:29:59,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662331351] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:29:59,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360685891] [2025-03-04 15:29:59,304 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:29:59,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:29:59,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:29:59,306 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:29:59,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-04 15:29:59,373 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-04 15:29:59,382 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-03-04 15:29:59,383 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 15:29:59,383 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:59,384 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 15:29:59,384 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:29:59,400 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-04 15:29:59,400 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:29:59,416 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-04 15:29:59,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360685891] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:29:59,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:29:59,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-03-04 15:29:59,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496396448] [2025-03-04 15:29:59,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:29:59,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:29:59,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:29:59,417 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:29:59,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:29:59,428 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 77 [2025-03-04 15:29:59,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 178 transitions, 1385 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2025-03-04 15:29:59,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:29:59,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 77 [2025-03-04 15:29:59,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:29:59,794 INFO L124 PetriNetUnfolderBase]: 2548/4082 cut-off events. [2025-03-04 15:29:59,795 INFO L125 PetriNetUnfolderBase]: For 2108/2108 co-relation queries the response was YES. [2025-03-04 15:29:59,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11061 conditions, 4082 events. 2548/4082 cut-off events. For 2108/2108 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 23850 event pairs, 1744 based on Foata normal form. 1/3486 useless extension candidates. Maximal degree in co-relation 11008. Up to 3823 conditions per place. [2025-03-04 15:29:59,812 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 148 selfloop transitions, 16 changer transitions 0/177 dead transitions. [2025-03-04 15:29:59,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 177 transitions, 1703 flow [2025-03-04 15:29:59,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:29:59,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:29:59,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2025-03-04 15:29:59,814 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38311688311688313 [2025-03-04 15:29:59,814 INFO L175 Difference]: Start difference. First operand has 114 places, 178 transitions, 1385 flow. Second operand 4 states and 118 transitions. [2025-03-04 15:29:59,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 177 transitions, 1703 flow [2025-03-04 15:29:59,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 177 transitions, 1679 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-03-04 15:29:59,823 INFO L231 Difference]: Finished difference. Result has 114 places, 177 transitions, 1383 flow [2025-03-04 15:29:59,823 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1351, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1383, PETRI_PLACES=114, PETRI_TRANSITIONS=177} [2025-03-04 15:29:59,823 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 41 predicate places. [2025-03-04 15:29:59,823 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 177 transitions, 1383 flow [2025-03-04 15:29:59,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2025-03-04 15:29:59,824 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:29:59,824 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:29:59,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-04 15:30:00,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:30:00,028 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-04 15:30:00,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:30:00,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1637852924, now seen corresponding path program 1 times [2025-03-04 15:30:00,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:30:00,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862293278] [2025-03-04 15:30:00,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:00,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:30:00,037 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-04 15:30:00,046 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 15:30:00,046 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:00,046 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:00,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:00,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:30:00,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862293278] [2025-03-04 15:30:00,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862293278] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:30:00,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:30:00,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:30:00,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757684996] [2025-03-04 15:30:00,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:30:00,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:30:00,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:30:00,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:30:00,133 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:30:00,133 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2025-03-04 15:30:00,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 177 transitions, 1383 flow. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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) [2025-03-04 15:30:00,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:30:00,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2025-03-04 15:30:00,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:30:00,582 INFO L124 PetriNetUnfolderBase]: 2814/4884 cut-off events. [2025-03-04 15:30:00,582 INFO L125 PetriNetUnfolderBase]: For 3297/3297 co-relation queries the response was YES. [2025-03-04 15:30:00,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13687 conditions, 4884 events. 2814/4884 cut-off events. For 3297/3297 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 31274 event pairs, 1900 based on Foata normal form. 84/4380 useless extension candidates. Maximal degree in co-relation 13603. Up to 3812 conditions per place. [2025-03-04 15:30:00,597 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 274 selfloop transitions, 3 changer transitions 16/309 dead transitions. [2025-03-04 15:30:00,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 309 transitions, 3046 flow [2025-03-04 15:30:00,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:30:00,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:30:00,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 177 transitions. [2025-03-04 15:30:00,599 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5746753246753247 [2025-03-04 15:30:00,599 INFO L175 Difference]: Start difference. First operand has 114 places, 177 transitions, 1383 flow. Second operand 4 states and 177 transitions. [2025-03-04 15:30:00,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 309 transitions, 3046 flow [2025-03-04 15:30:00,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 309 transitions, 3014 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 15:30:00,610 INFO L231 Difference]: Finished difference. Result has 115 places, 177 transitions, 1362 flow [2025-03-04 15:30:00,610 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1351, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1362, PETRI_PLACES=115, PETRI_TRANSITIONS=177} [2025-03-04 15:30:00,610 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 42 predicate places. [2025-03-04 15:30:00,610 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 177 transitions, 1362 flow [2025-03-04 15:30:00,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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) [2025-03-04 15:30:00,610 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:30:00,610 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-03-04 15:30:00,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-04 15:30:00,611 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-04 15:30:00,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:30:00,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1537886734, now seen corresponding path program 1 times [2025-03-04 15:30:00,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:30:00,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981284233] [2025-03-04 15:30:00,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:00,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:30:00,623 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-04 15:30:00,630 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 15:30:00,630 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:00,630 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:00,692 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-04 15:30:00,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:30:00,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981284233] [2025-03-04 15:30:00,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981284233] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:30:00,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436331472] [2025-03-04 15:30:00,692 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:00,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:30:00,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:30:00,694 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:30:00,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-04 15:30:00,769 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-04 15:30:00,790 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 15:30:00,790 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:00,790 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:00,792 INFO L256 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:30:00,793 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:30:00,809 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-04 15:30:00,809 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:30:00,835 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-04 15:30:00,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436331472] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:30:00,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:30:00,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-04 15:30:00,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756415408] [2025-03-04 15:30:00,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:30:00,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-04 15:30:00,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:30:00,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-04 15:30:00,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-04 15:30:00,845 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 77 [2025-03-04 15:30:00,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 177 transitions, 1362 flow. Second operand has 12 states, 12 states have (on average 25.5) internal successors, (306), 12 states have internal predecessors, (306), 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) [2025-03-04 15:30:00,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:30:00,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 77 [2025-03-04 15:30:00,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:30:01,337 INFO L124 PetriNetUnfolderBase]: 2820/4908 cut-off events. [2025-03-04 15:30:01,337 INFO L125 PetriNetUnfolderBase]: For 3789/3789 co-relation queries the response was YES. [2025-03-04 15:30:01,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14261 conditions, 4908 events. 2820/4908 cut-off events. For 3789/3789 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 31638 event pairs, 1900 based on Foata normal form. 6/4308 useless extension candidates. Maximal degree in co-relation 14108. Up to 4423 conditions per place. [2025-03-04 15:30:01,352 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 138 selfloop transitions, 33 changer transitions 0/186 dead transitions. [2025-03-04 15:30:01,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 186 transitions, 1746 flow [2025-03-04 15:30:01,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 15:30:01,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-04 15:30:01,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 298 transitions. [2025-03-04 15:30:01,354 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38701298701298703 [2025-03-04 15:30:01,354 INFO L175 Difference]: Start difference. First operand has 115 places, 177 transitions, 1362 flow. Second operand 10 states and 298 transitions. [2025-03-04 15:30:01,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 186 transitions, 1746 flow [2025-03-04 15:30:01,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 186 transitions, 1742 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-03-04 15:30:01,362 INFO L231 Difference]: Finished difference. Result has 126 places, 186 transitions, 1484 flow [2025-03-04 15:30:01,362 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1358, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1484, PETRI_PLACES=126, PETRI_TRANSITIONS=186} [2025-03-04 15:30:01,363 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 53 predicate places. [2025-03-04 15:30:01,364 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 186 transitions, 1484 flow [2025-03-04 15:30:01,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 25.5) internal successors, (306), 12 states have internal predecessors, (306), 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) [2025-03-04 15:30:01,364 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:30:01,364 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1] [2025-03-04 15:30:01,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-04 15:30:01,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:30:01,568 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-04 15:30:01,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:30:01,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1858142629, now seen corresponding path program 1 times [2025-03-04 15:30:01,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:30:01,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597986423] [2025-03-04 15:30:01,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:01,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:30:01,576 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 15:30:01,581 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 15:30:01,581 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:01,581 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:01,676 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:01,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:30:01,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597986423] [2025-03-04 15:30:01,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597986423] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:30:01,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008497445] [2025-03-04 15:30:01,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:01,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:30:01,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:30:01,679 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:30:01,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-04 15:30:01,763 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 15:30:01,781 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 15:30:01,781 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:01,781 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:01,783 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-04 15:30:01,783 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:30:01,825 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:01,826 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:30:01,941 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:01,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008497445] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:30:01,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:30:01,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2025-03-04 15:30:01,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617082732] [2025-03-04 15:30:01,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:30:01,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-04 15:30:01,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:30:01,944 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-04 15:30:01,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2025-03-04 15:30:02,004 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 77 [2025-03-04 15:30:02,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 186 transitions, 1484 flow. Second operand has 24 states, 24 states have (on average 19.083333333333332) internal successors, (458), 24 states have internal predecessors, (458), 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) [2025-03-04 15:30:02,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:30:02,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 77 [2025-03-04 15:30:02,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:30:02,924 INFO L124 PetriNetUnfolderBase]: 3054/5844 cut-off events. [2025-03-04 15:30:02,924 INFO L125 PetriNetUnfolderBase]: For 9615/9615 co-relation queries the response was YES. [2025-03-04 15:30:02,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18522 conditions, 5844 events. 3054/5844 cut-off events. For 9615/9615 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 39276 event pairs, 1900 based on Foata normal form. 228/5466 useless extension candidates. Maximal degree in co-relation 18440. Up to 4404 conditions per place. [2025-03-04 15:30:02,949 INFO L140 encePairwiseOnDemand]: 60/77 looper letters, 80 selfloop transitions, 225 changer transitions 0/318 dead transitions. [2025-03-04 15:30:02,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 318 transitions, 3408 flow [2025-03-04 15:30:02,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-04 15:30:02,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-03-04 15:30:02,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 579 transitions. [2025-03-04 15:30:02,951 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3417945690672963 [2025-03-04 15:30:02,951 INFO L175 Difference]: Start difference. First operand has 126 places, 186 transitions, 1484 flow. Second operand 22 states and 579 transitions. [2025-03-04 15:30:02,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 318 transitions, 3408 flow [2025-03-04 15:30:02,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 318 transitions, 3322 flow, removed 3 selfloop flow, removed 3 redundant places. [2025-03-04 15:30:02,974 INFO L231 Difference]: Finished difference. Result has 150 places, 318 transitions, 3310 flow [2025-03-04 15:30:02,974 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1428, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3310, PETRI_PLACES=150, PETRI_TRANSITIONS=318} [2025-03-04 15:30:02,974 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 77 predicate places. [2025-03-04 15:30:02,975 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 318 transitions, 3310 flow [2025-03-04 15:30:02,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 19.083333333333332) internal successors, (458), 24 states have internal predecessors, (458), 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) [2025-03-04 15:30:02,975 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:30:02,975 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:30:02,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-04 15:30:03,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-04 15:30:03,176 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-04 15:30:03,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:30:03,176 INFO L85 PathProgramCache]: Analyzing trace with hash -671288642, now seen corresponding path program 1 times [2025-03-04 15:30:03,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:30:03,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645772948] [2025-03-04 15:30:03,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:03,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:30:03,186 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-04 15:30:03,192 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 15:30:03,193 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:03,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:03,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 15:30:03,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:30:03,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645772948] [2025-03-04 15:30:03,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645772948] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:30:03,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:30:03,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:30:03,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459104222] [2025-03-04 15:30:03,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:30:03,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 15:30:03,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:30:03,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 15:30:03,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 15:30:03,231 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2025-03-04 15:30:03,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 318 transitions, 3310 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2025-03-04 15:30:03,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:30:03,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2025-03-04 15:30:03,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:30:03,885 INFO L124 PetriNetUnfolderBase]: 2706/5343 cut-off events. [2025-03-04 15:30:03,885 INFO L125 PetriNetUnfolderBase]: For 10662/10662 co-relation queries the response was YES. [2025-03-04 15:30:03,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18746 conditions, 5343 events. 2706/5343 cut-off events. For 10662/10662 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 35765 event pairs, 1634 based on Foata normal form. 0/4923 useless extension candidates. Maximal degree in co-relation 18659. Up to 4684 conditions per place. [2025-03-04 15:30:03,902 INFO L140 encePairwiseOnDemand]: 75/77 looper letters, 300 selfloop transitions, 1 changer transitions 0/317 dead transitions. [2025-03-04 15:30:03,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 317 transitions, 3908 flow [2025-03-04 15:30:03,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 15:30:03,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 15:30:03,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2025-03-04 15:30:03,903 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5194805194805194 [2025-03-04 15:30:03,903 INFO L175 Difference]: Start difference. First operand has 150 places, 318 transitions, 3310 flow. Second operand 3 states and 120 transitions. [2025-03-04 15:30:03,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 317 transitions, 3908 flow [2025-03-04 15:30:03,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 317 transitions, 3346 flow, removed 176 selfloop flow, removed 9 redundant places. [2025-03-04 15:30:03,933 INFO L231 Difference]: Finished difference. Result has 142 places, 317 transitions, 2746 flow [2025-03-04 15:30:03,933 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=2744, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2746, PETRI_PLACES=142, PETRI_TRANSITIONS=317} [2025-03-04 15:30:03,933 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 69 predicate places. [2025-03-04 15:30:03,933 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 317 transitions, 2746 flow [2025-03-04 15:30:03,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2025-03-04 15:30:03,933 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:30:03,933 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:30:03,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-04 15:30:03,933 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-04 15:30:03,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:30:03,934 INFO L85 PathProgramCache]: Analyzing trace with hash -671288644, now seen corresponding path program 1 times [2025-03-04 15:30:03,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:30:03,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673334981] [2025-03-04 15:30:03,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:03,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:30:03,941 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-04 15:30:03,946 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 15:30:03,946 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:03,946 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:04,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 15:30:04,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:30:04,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673334981] [2025-03-04 15:30:04,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673334981] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:30:04,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:30:04,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:30:04,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165879701] [2025-03-04 15:30:04,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:30:04,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:30:04,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:30:04,003 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:30:04,003 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:30:04,003 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2025-03-04 15:30:04,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 317 transitions, 2746 flow. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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) [2025-03-04 15:30:04,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:30:04,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2025-03-04 15:30:04,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:30:04,695 INFO L124 PetriNetUnfolderBase]: 3610/6993 cut-off events. [2025-03-04 15:30:04,695 INFO L125 PetriNetUnfolderBase]: For 8220/8220 co-relation queries the response was YES. [2025-03-04 15:30:04,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21015 conditions, 6993 events. 3610/6993 cut-off events. For 8220/8220 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 49925 event pairs, 2504 based on Foata normal form. 235/6688 useless extension candidates. Maximal degree in co-relation 20978. Up to 4457 conditions per place. [2025-03-04 15:30:04,720 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 352 selfloop transitions, 11 changer transitions 2/381 dead transitions. [2025-03-04 15:30:04,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 381 transitions, 3974 flow [2025-03-04 15:30:04,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:30:04,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:30:04,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 172 transitions. [2025-03-04 15:30:04,721 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5584415584415584 [2025-03-04 15:30:04,721 INFO L175 Difference]: Start difference. First operand has 142 places, 317 transitions, 2746 flow. Second operand 4 states and 172 transitions. [2025-03-04 15:30:04,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 381 transitions, 3974 flow [2025-03-04 15:30:04,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 381 transitions, 3973 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:30:04,752 INFO L231 Difference]: Finished difference. Result has 145 places, 317 transitions, 2774 flow [2025-03-04 15:30:04,752 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=2745, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2774, PETRI_PLACES=145, PETRI_TRANSITIONS=317} [2025-03-04 15:30:04,752 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 72 predicate places. [2025-03-04 15:30:04,752 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 317 transitions, 2774 flow [2025-03-04 15:30:04,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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) [2025-03-04 15:30:04,752 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:30:04,752 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:30:04,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-04 15:30:04,753 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-04 15:30:04,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:30:04,753 INFO L85 PathProgramCache]: Analyzing trace with hash -2104909787, now seen corresponding path program 1 times [2025-03-04 15:30:04,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:30:04,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107554237] [2025-03-04 15:30:04,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:04,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:30:04,760 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-04 15:30:04,766 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-04 15:30:04,766 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:04,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:04,849 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-04 15:30:04,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:30:04,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107554237] [2025-03-04 15:30:04,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107554237] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:30:04,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75559015] [2025-03-04 15:30:04,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:04,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:30:04,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:30:04,852 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:30:04,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-04 15:30:04,936 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-04 15:30:04,961 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-04 15:30:04,961 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:04,961 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:04,963 INFO L256 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 15:30:04,964 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:30:04,992 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-04 15:30:04,993 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:30:05,020 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-04 15:30:05,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75559015] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-04 15:30:05,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-04 15:30:05,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2025-03-04 15:30:05,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405052998] [2025-03-04 15:30:05,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:30:05,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 15:30:05,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:30:05,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 15:30:05,022 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-03-04 15:30:05,022 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2025-03-04 15:30:05,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 317 transitions, 2774 flow. Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 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) [2025-03-04 15:30:05,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:30:05,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2025-03-04 15:30:05,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:30:05,732 INFO L124 PetriNetUnfolderBase]: 3606/6989 cut-off events. [2025-03-04 15:30:05,732 INFO L125 PetriNetUnfolderBase]: For 8570/8570 co-relation queries the response was YES. [2025-03-04 15:30:05,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21680 conditions, 6989 events. 3606/6989 cut-off events. For 8570/8570 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 49478 event pairs, 2504 based on Foata normal form. 4/6460 useless extension candidates. Maximal degree in co-relation 21642. Up to 5170 conditions per place. [2025-03-04 15:30:05,769 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 372 selfloop transitions, 45 changer transitions 4/437 dead transitions. [2025-03-04 15:30:05,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 437 transitions, 4591 flow [2025-03-04 15:30:05,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 15:30:05,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 15:30:05,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 200 transitions. [2025-03-04 15:30:05,770 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5194805194805194 [2025-03-04 15:30:05,770 INFO L175 Difference]: Start difference. First operand has 145 places, 317 transitions, 2774 flow. Second operand 5 states and 200 transitions. [2025-03-04 15:30:05,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 437 transitions, 4591 flow [2025-03-04 15:30:05,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 437 transitions, 4571 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 15:30:05,814 INFO L231 Difference]: Finished difference. Result has 147 places, 315 transitions, 2828 flow [2025-03-04 15:30:05,814 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=2738, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2828, PETRI_PLACES=147, PETRI_TRANSITIONS=315} [2025-03-04 15:30:05,815 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 74 predicate places. [2025-03-04 15:30:05,815 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 315 transitions, 2828 flow [2025-03-04 15:30:05,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 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) [2025-03-04 15:30:05,815 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:30:05,815 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:30:05,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-04 15:30:06,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-04 15:30:06,016 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-04 15:30:06,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:30:06,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1355102765, now seen corresponding path program 1 times [2025-03-04 15:30:06,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:30:06,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709842237] [2025-03-04 15:30:06,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:06,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:30:06,024 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-04 15:30:06,030 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-04 15:30:06,031 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:06,031 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:06,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-04 15:30:06,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:30:06,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709842237] [2025-03-04 15:30:06,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709842237] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:30:06,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:30:06,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 15:30:06,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621821130] [2025-03-04 15:30:06,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:30:06,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:30:06,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:30:06,176 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:30:06,176 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-04 15:30:06,176 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2025-03-04 15:30:06,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 315 transitions, 2828 flow. Second operand has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 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) [2025-03-04 15:30:06,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:30:06,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2025-03-04 15:30:06,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:30:07,361 INFO L124 PetriNetUnfolderBase]: 4702/9909 cut-off events. [2025-03-04 15:30:07,362 INFO L125 PetriNetUnfolderBase]: For 14418/14418 co-relation queries the response was YES. [2025-03-04 15:30:07,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31479 conditions, 9909 events. 4702/9909 cut-off events. For 14418/14418 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 77726 event pairs, 1604 based on Foata normal form. 116/9471 useless extension candidates. Maximal degree in co-relation 31441. Up to 3565 conditions per place. [2025-03-04 15:30:07,418 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 403 selfloop transitions, 27 changer transitions 19/465 dead transitions. [2025-03-04 15:30:07,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 465 transitions, 4931 flow [2025-03-04 15:30:07,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 15:30:07,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 15:30:07,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 237 transitions. [2025-03-04 15:30:07,419 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.512987012987013 [2025-03-04 15:30:07,419 INFO L175 Difference]: Start difference. First operand has 147 places, 315 transitions, 2828 flow. Second operand 6 states and 237 transitions. [2025-03-04 15:30:07,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 465 transitions, 4931 flow [2025-03-04 15:30:07,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 465 transitions, 4864 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 15:30:07,494 INFO L231 Difference]: Finished difference. Result has 151 places, 323 transitions, 2924 flow [2025-03-04 15:30:07,494 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=2771, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2924, PETRI_PLACES=151, PETRI_TRANSITIONS=323} [2025-03-04 15:30:07,494 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 78 predicate places. [2025-03-04 15:30:07,494 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 323 transitions, 2924 flow [2025-03-04 15:30:07,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 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) [2025-03-04 15:30:07,494 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:30:07,494 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2025-03-04 15:30:07,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-04 15:30:07,494 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-04 15:30:07,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:30:07,495 INFO L85 PathProgramCache]: Analyzing trace with hash -923350946, now seen corresponding path program 2 times [2025-03-04 15:30:07,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:30:07,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897920422] [2025-03-04 15:30:07,495 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:30:07,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:30:07,507 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-03-04 15:30:07,519 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-03-04 15:30:07,520 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:30:07,520 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:07,568 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-03-04 15:30:07,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:30:07,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897920422] [2025-03-04 15:30:07,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897920422] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:30:07,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844407597] [2025-03-04 15:30:07,568 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:30:07,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:30:07,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:30:07,570 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:30:07,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-04 15:30:07,661 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-03-04 15:30:07,697 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-03-04 15:30:07,697 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:30:07,697 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:07,699 INFO L256 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 15:30:07,700 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:30:07,721 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-03-04 15:30:07,721 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:30:07,748 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-03-04 15:30:07,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844407597] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:30:07,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:30:07,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-03-04 15:30:07,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619176088] [2025-03-04 15:30:07,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:30:07,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 15:30:07,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:30:07,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 15:30:07,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 15:30:07,754 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 77 [2025-03-04 15:30:07,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 323 transitions, 2924 flow. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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) [2025-03-04 15:30:07,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:30:07,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 77 [2025-03-04 15:30:07,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:30:08,764 INFO L124 PetriNetUnfolderBase]: 4668/9901 cut-off events. [2025-03-04 15:30:08,764 INFO L125 PetriNetUnfolderBase]: For 14798/14798 co-relation queries the response was YES. [2025-03-04 15:30:08,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31703 conditions, 9901 events. 4668/9901 cut-off events. For 14798/14798 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 79212 event pairs, 3158 based on Foata normal form. 12/9310 useless extension candidates. Maximal degree in co-relation 31662. Up to 6548 conditions per place. [2025-03-04 15:30:08,799 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 233 selfloop transitions, 76 changer transitions 0/324 dead transitions. [2025-03-04 15:30:08,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 324 transitions, 3546 flow [2025-03-04 15:30:08,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 15:30:08,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 15:30:08,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 164 transitions. [2025-03-04 15:30:08,800 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42597402597402595 [2025-03-04 15:30:08,800 INFO L175 Difference]: Start difference. First operand has 151 places, 323 transitions, 2924 flow. Second operand 5 states and 164 transitions. [2025-03-04 15:30:08,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 324 transitions, 3546 flow [2025-03-04 15:30:08,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 324 transitions, 3488 flow, removed 1 selfloop flow, removed 6 redundant places. [2025-03-04 15:30:08,867 INFO L231 Difference]: Finished difference. Result has 149 places, 324 transitions, 3042 flow [2025-03-04 15:30:08,867 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=2856, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3042, PETRI_PLACES=149, PETRI_TRANSITIONS=324} [2025-03-04 15:30:08,868 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 76 predicate places. [2025-03-04 15:30:08,868 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 324 transitions, 3042 flow [2025-03-04 15:30:08,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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) [2025-03-04 15:30:08,868 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:30:08,868 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1] [2025-03-04 15:30:08,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-04 15:30:09,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:30:09,068 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-04 15:30:09,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:30:09,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1791170706, now seen corresponding path program 2 times [2025-03-04 15:30:09,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:30:09,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256258204] [2025-03-04 15:30:09,069 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:30:09,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:30:09,082 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-03-04 15:30:09,091 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-03-04 15:30:09,092 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:30:09,092 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:09,250 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-04 15:30:09,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:30:09,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256258204] [2025-03-04 15:30:09,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256258204] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:30:09,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076658414] [2025-03-04 15:30:09,251 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:30:09,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:30:09,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:30:09,253 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:30:09,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-04 15:30:09,349 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-03-04 15:30:09,377 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-03-04 15:30:09,377 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:30:09,377 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:09,380 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 15:30:09,381 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:30:09,429 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-04 15:30:09,430 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:30:09,469 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-04 15:30:09,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076658414] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:30:09,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:30:09,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 3, 3] total 12 [2025-03-04 15:30:09,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242368721] [2025-03-04 15:30:09,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:30:09,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-04 15:30:09,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:30:09,470 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-04 15:30:09,470 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-03-04 15:30:09,542 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 77 [2025-03-04 15:30:09,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 324 transitions, 3042 flow. Second operand has 13 states, 13 states have (on average 17.692307692307693) internal successors, (230), 13 states have internal predecessors, (230), 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) [2025-03-04 15:30:09,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:30:09,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 77 [2025-03-04 15:30:09,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:30:11,005 INFO L124 PetriNetUnfolderBase]: 6617/13767 cut-off events. [2025-03-04 15:30:11,005 INFO L125 PetriNetUnfolderBase]: For 21519/21519 co-relation queries the response was YES. [2025-03-04 15:30:11,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45138 conditions, 13767 events. 6617/13767 cut-off events. For 21519/21519 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 115270 event pairs, 4491 based on Foata normal form. 8/12918 useless extension candidates. Maximal degree in co-relation 45100. Up to 8470 conditions per place. [2025-03-04 15:30:11,071 INFO L140 encePairwiseOnDemand]: 67/77 looper letters, 384 selfloop transitions, 97 changer transitions 0/492 dead transitions. [2025-03-04 15:30:11,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 492 transitions, 5616 flow [2025-03-04 15:30:11,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-04 15:30:11,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-04 15:30:11,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 299 transitions. [2025-03-04 15:30:11,072 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2987012987012987 [2025-03-04 15:30:11,072 INFO L175 Difference]: Start difference. First operand has 149 places, 324 transitions, 3042 flow. Second operand 13 states and 299 transitions. [2025-03-04 15:30:11,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 492 transitions, 5616 flow [2025-03-04 15:30:11,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 492 transitions, 5326 flow, removed 2 selfloop flow, removed 7 redundant places. [2025-03-04 15:30:11,174 INFO L231 Difference]: Finished difference. Result has 153 places, 348 transitions, 3297 flow [2025-03-04 15:30:11,174 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=2884, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3297, PETRI_PLACES=153, PETRI_TRANSITIONS=348} [2025-03-04 15:30:11,175 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 80 predicate places. [2025-03-04 15:30:11,175 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 348 transitions, 3297 flow [2025-03-04 15:30:11,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 17.692307692307693) internal successors, (230), 13 states have internal predecessors, (230), 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) [2025-03-04 15:30:11,175 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:30:11,175 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:30:11,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-04 15:30:11,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2025-03-04 15:30:11,376 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-04 15:30:11,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:30:11,376 INFO L85 PathProgramCache]: Analyzing trace with hash -217570594, now seen corresponding path program 1 times [2025-03-04 15:30:11,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:30:11,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162716886] [2025-03-04 15:30:11,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:11,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:30:11,384 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-04 15:30:11,391 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-04 15:30:11,391 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:11,391 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:11,562 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-04 15:30:11,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:30:11,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162716886] [2025-03-04 15:30:11,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162716886] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:30:11,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792223701] [2025-03-04 15:30:11,562 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:11,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:30:11,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:30:11,564 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:30:11,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-04 15:30:11,660 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-04 15:30:11,690 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-04 15:30:11,690 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:11,690 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:11,692 INFO L256 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 15:30:11,695 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:30:11,722 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-04 15:30:11,722 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 15:30:11,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792223701] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:30:11,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 15:30:11,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2025-03-04 15:30:11,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726376916] [2025-03-04 15:30:11,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:30:11,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 15:30:11,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:30:11,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 15:30:11,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-04 15:30:11,723 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2025-03-04 15:30:11,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 348 transitions, 3297 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:30:11,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:30:11,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2025-03-04 15:30:11,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:30:12,890 INFO L124 PetriNetUnfolderBase]: 6098/13022 cut-off events. [2025-03-04 15:30:12,891 INFO L125 PetriNetUnfolderBase]: For 18830/18830 co-relation queries the response was YES. [2025-03-04 15:30:12,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41896 conditions, 13022 events. 6098/13022 cut-off events. For 18830/18830 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 109750 event pairs, 4095 based on Foata normal form. 0/12412 useless extension candidates. Maximal degree in co-relation 41861. Up to 11313 conditions per place. [2025-03-04 15:30:12,941 INFO L140 encePairwiseOnDemand]: 75/77 looper letters, 330 selfloop transitions, 1 changer transitions 2/347 dead transitions. [2025-03-04 15:30:12,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 347 transitions, 3957 flow [2025-03-04 15:30:12,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 15:30:12,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 15:30:12,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2025-03-04 15:30:12,942 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2025-03-04 15:30:12,942 INFO L175 Difference]: Start difference. First operand has 153 places, 348 transitions, 3297 flow. Second operand 3 states and 119 transitions. [2025-03-04 15:30:12,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 347 transitions, 3957 flow [2025-03-04 15:30:13,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 347 transitions, 3938 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-04 15:30:13,031 INFO L231 Difference]: Finished difference. Result has 150 places, 345 transitions, 3269 flow [2025-03-04 15:30:13,031 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=3272, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3269, PETRI_PLACES=150, PETRI_TRANSITIONS=345} [2025-03-04 15:30:13,031 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 77 predicate places. [2025-03-04 15:30:13,031 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 345 transitions, 3269 flow [2025-03-04 15:30:13,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:30:13,031 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:30:13,031 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:30:13,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-03-04 15:30:13,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2025-03-04 15:30:13,232 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-04 15:30:13,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:30:13,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1619620486, now seen corresponding path program 1 times [2025-03-04 15:30:13,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:30:13,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204708411] [2025-03-04 15:30:13,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:13,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:30:13,241 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-04 15:30:13,248 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-04 15:30:13,248 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:13,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:13,364 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-04 15:30:13,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:30:13,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204708411] [2025-03-04 15:30:13,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204708411] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:30:13,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156176535] [2025-03-04 15:30:13,364 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:13,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:30:13,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:30:13,367 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:30:13,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-04 15:30:13,460 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-04 15:30:13,489 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-04 15:30:13,490 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:13,490 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:13,491 INFO L256 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 15:30:13,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:30:13,535 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-04 15:30:13,536 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:30:13,573 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-04 15:30:13,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156176535] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:30:13,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:30:13,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 2, 2] total 8 [2025-03-04 15:30:13,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865111220] [2025-03-04 15:30:13,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:30:13,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-04 15:30:13,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:30:13,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-04 15:30:13,575 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-04 15:30:13,602 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 77 [2025-03-04 15:30:13,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 345 transitions, 3269 flow. Second operand has 9 states, 9 states have (on average 22.22222222222222) internal successors, (200), 9 states have internal predecessors, (200), 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) [2025-03-04 15:30:13,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:30:13,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 77 [2025-03-04 15:30:13,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:30:15,427 INFO L124 PetriNetUnfolderBase]: 6928/15616 cut-off events. [2025-03-04 15:30:15,427 INFO L125 PetriNetUnfolderBase]: For 28165/28165 co-relation queries the response was YES. [2025-03-04 15:30:15,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54046 conditions, 15616 events. 6928/15616 cut-off events. For 28165/28165 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 137635 event pairs, 2242 based on Foata normal form. 324/14912 useless extension candidates. Maximal degree in co-relation 54010. Up to 5221 conditions per place. [2025-03-04 15:30:15,505 INFO L140 encePairwiseOnDemand]: 65/77 looper letters, 427 selfloop transitions, 89 changer transitions 0/527 dead transitions. [2025-03-04 15:30:15,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 527 transitions, 5734 flow [2025-03-04 15:30:15,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 15:30:15,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-04 15:30:15,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 279 transitions. [2025-03-04 15:30:15,506 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36233766233766235 [2025-03-04 15:30:15,506 INFO L175 Difference]: Start difference. First operand has 150 places, 345 transitions, 3269 flow. Second operand 10 states and 279 transitions. [2025-03-04 15:30:15,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 527 transitions, 5734 flow [2025-03-04 15:30:15,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 527 transitions, 5730 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 15:30:15,731 INFO L231 Difference]: Finished difference. Result has 157 places, 395 transitions, 4179 flow [2025-03-04 15:30:15,732 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=3262, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4179, PETRI_PLACES=157, PETRI_TRANSITIONS=395} [2025-03-04 15:30:15,732 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 84 predicate places. [2025-03-04 15:30:15,732 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 395 transitions, 4179 flow [2025-03-04 15:30:15,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.22222222222222) internal successors, (200), 9 states have internal predecessors, (200), 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) [2025-03-04 15:30:15,732 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:30:15,732 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:30:15,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-04 15:30:15,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2025-03-04 15:30:15,935 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-04 15:30:15,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:30:15,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1619620485, now seen corresponding path program 1 times [2025-03-04 15:30:15,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:30:15,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696339108] [2025-03-04 15:30:15,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:15,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:30:15,948 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-04 15:30:15,958 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-04 15:30:15,958 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:15,958 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:16,015 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-04 15:30:16,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:30:16,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696339108] [2025-03-04 15:30:16,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696339108] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:30:16,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312654365] [2025-03-04 15:30:16,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:16,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:30:16,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:30:16,018 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:30:16,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-04 15:30:16,123 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-04 15:30:16,153 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-04 15:30:16,153 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:16,153 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:16,155 INFO L256 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 15:30:16,156 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:30:16,289 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-04 15:30:16,290 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 15:30:16,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312654365] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:30:16,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 15:30:16,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2025-03-04 15:30:16,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237761418] [2025-03-04 15:30:16,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:30:16,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:30:16,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:30:16,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:30:16,291 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-04 15:30:16,291 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2025-03-04 15:30:16,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 395 transitions, 4179 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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) [2025-03-04 15:30:16,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:30:16,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2025-03-04 15:30:16,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:30:18,057 INFO L124 PetriNetUnfolderBase]: 7087/15946 cut-off events. [2025-03-04 15:30:18,058 INFO L125 PetriNetUnfolderBase]: For 42856/42856 co-relation queries the response was YES. [2025-03-04 15:30:18,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59515 conditions, 15946 events. 7087/15946 cut-off events. For 42856/42856 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 139762 event pairs, 1347 based on Foata normal form. 468/15866 useless extension candidates. Maximal degree in co-relation 59476. Up to 8689 conditions per place. [2025-03-04 15:30:18,182 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 387 selfloop transitions, 6 changer transitions 0/407 dead transitions. [2025-03-04 15:30:18,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 407 transitions, 4997 flow [2025-03-04 15:30:18,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:30:18,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:30:18,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 158 transitions. [2025-03-04 15:30:18,183 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.512987012987013 [2025-03-04 15:30:18,183 INFO L175 Difference]: Start difference. First operand has 157 places, 395 transitions, 4179 flow. Second operand 4 states and 158 transitions. [2025-03-04 15:30:18,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 407 transitions, 4997 flow [2025-03-04 15:30:18,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 407 transitions, 4934 flow, removed 7 selfloop flow, removed 4 redundant places. [2025-03-04 15:30:18,370 INFO L231 Difference]: Finished difference. Result has 155 places, 395 transitions, 4142 flow [2025-03-04 15:30:18,370 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=4099, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4142, PETRI_PLACES=155, PETRI_TRANSITIONS=395} [2025-03-04 15:30:18,371 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 82 predicate places. [2025-03-04 15:30:18,371 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 395 transitions, 4142 flow [2025-03-04 15:30:18,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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) [2025-03-04 15:30:18,371 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:30:18,371 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:30:18,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-04 15:30:18,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:30:18,571 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-04 15:30:18,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:30:18,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1619620492, now seen corresponding path program 1 times [2025-03-04 15:30:18,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:30:18,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792117356] [2025-03-04 15:30:18,572 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:18,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:30:18,582 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-04 15:30:18,589 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-04 15:30:18,589 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:18,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:18,625 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-04 15:30:18,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:30:18,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792117356] [2025-03-04 15:30:18,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792117356] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:30:18,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133922813] [2025-03-04 15:30:18,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:18,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:30:18,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:30:18,628 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:30:18,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-04 15:30:18,730 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-04 15:30:18,758 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-04 15:30:18,758 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:18,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:18,759 INFO L256 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 15:30:18,760 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:30:18,785 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-04 15:30:18,786 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:30:18,815 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-04 15:30:18,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133922813] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:30:18,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:30:18,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2025-03-04 15:30:18,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727762815] [2025-03-04 15:30:18,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:30:18,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 15:30:18,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:30:18,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 15:30:18,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-04 15:30:18,817 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2025-03-04 15:30:18,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 395 transitions, 4142 flow. Second operand has 7 states, 7 states have (on average 33.714285714285715) internal successors, (236), 7 states have internal predecessors, (236), 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) [2025-03-04 15:30:18,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:30:18,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2025-03-04 15:30:18,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:30:21,855 INFO L124 PetriNetUnfolderBase]: 15571/29470 cut-off events. [2025-03-04 15:30:21,855 INFO L125 PetriNetUnfolderBase]: For 62734/62734 co-relation queries the response was YES. [2025-03-04 15:30:22,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98856 conditions, 29470 events. 15571/29470 cut-off events. For 62734/62734 co-relation queries the response was YES. Maximal size of possible extension queue 736. Compared 249500 event pairs, 1755 based on Foata normal form. 156/29078 useless extension candidates. Maximal degree in co-relation 98816. Up to 8107 conditions per place. [2025-03-04 15:30:22,099 INFO L140 encePairwiseOnDemand]: 73/77 looper letters, 428 selfloop transitions, 10 changer transitions 0/452 dead transitions. [2025-03-04 15:30:22,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 452 transitions, 5230 flow [2025-03-04 15:30:22,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 15:30:22,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 15:30:22,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 251 transitions. [2025-03-04 15:30:22,100 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5432900432900433 [2025-03-04 15:30:22,100 INFO L175 Difference]: Start difference. First operand has 155 places, 395 transitions, 4142 flow. Second operand 6 states and 251 transitions. [2025-03-04 15:30:22,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 452 transitions, 5230 flow [2025-03-04 15:30:22,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 452 transitions, 5211 flow, removed 9 selfloop flow, removed 1 redundant places. [2025-03-04 15:30:22,394 INFO L231 Difference]: Finished difference. Result has 163 places, 402 transitions, 4237 flow [2025-03-04 15:30:22,394 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=4135, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4237, PETRI_PLACES=163, PETRI_TRANSITIONS=402} [2025-03-04 15:30:22,395 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 90 predicate places. [2025-03-04 15:30:22,395 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 402 transitions, 4237 flow [2025-03-04 15:30:22,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.714285714285715) internal successors, (236), 7 states have internal predecessors, (236), 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) [2025-03-04 15:30:22,395 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:30:22,395 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 1, 1, 1] [2025-03-04 15:30:22,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-03-04 15:30:22,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:30:22,595 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-04 15:30:22,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:30:22,596 INFO L85 PathProgramCache]: Analyzing trace with hash 592872315, now seen corresponding path program 2 times [2025-03-04 15:30:22,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:30:22,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066823388] [2025-03-04 15:30:22,596 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:30:22,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:30:22,607 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-03-04 15:30:22,610 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 5 of 35 statements. [2025-03-04 15:30:22,610 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 15:30:22,610 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:22,636 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-04 15:30:22,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:30:22,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066823388] [2025-03-04 15:30:22,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066823388] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:30:22,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299185616] [2025-03-04 15:30:22,637 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:30:22,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:30:22,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:30:22,639 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:30:22,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-04 15:30:22,751 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-03-04 15:30:22,761 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 5 of 35 statements. [2025-03-04 15:30:22,761 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 15:30:22,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:22,761 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 15:30:22,762 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:30:22,797 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-04 15:30:22,797 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:30:22,838 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-04 15:30:22,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299185616] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:30:22,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:30:22,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-03-04 15:30:22,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184381412] [2025-03-04 15:30:22,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:30:22,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 15:30:22,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:30:22,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 15:30:22,839 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 15:30:22,853 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 77 [2025-03-04 15:30:22,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 402 transitions, 4237 flow. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:30:22,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:30:22,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 77 [2025-03-04 15:30:22,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:30:26,997 INFO L124 PetriNetUnfolderBase]: 15493/29318 cut-off events. [2025-03-04 15:30:26,997 INFO L125 PetriNetUnfolderBase]: For 79396/79396 co-relation queries the response was YES. [2025-03-04 15:30:27,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102907 conditions, 29318 events. 15493/29318 cut-off events. For 79396/79396 co-relation queries the response was YES. Maximal size of possible extension queue 728. Compared 248432 event pairs, 9935 based on Foata normal form. 2/29216 useless extension candidates. Maximal degree in co-relation 102862. Up to 25603 conditions per place. [2025-03-04 15:30:27,249 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 334 selfloop transitions, 56 changer transitions 0/401 dead transitions. [2025-03-04 15:30:27,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 401 transitions, 4995 flow [2025-03-04 15:30:27,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 15:30:27,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 15:30:27,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2025-03-04 15:30:27,250 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33246753246753247 [2025-03-04 15:30:27,250 INFO L175 Difference]: Start difference. First operand has 163 places, 402 transitions, 4237 flow. Second operand 5 states and 128 transitions. [2025-03-04 15:30:27,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 401 transitions, 4995 flow [2025-03-04 15:30:27,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 401 transitions, 4991 flow, removed 2 selfloop flow, removed 0 redundant places. [2025-03-04 15:30:27,566 INFO L231 Difference]: Finished difference. Result has 166 places, 401 transitions, 4323 flow [2025-03-04 15:30:27,567 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=4211, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4323, PETRI_PLACES=166, PETRI_TRANSITIONS=401} [2025-03-04 15:30:27,567 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 93 predicate places. [2025-03-04 15:30:27,567 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 401 transitions, 4323 flow [2025-03-04 15:30:27,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:30:27,567 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:30:27,567 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 1, 1, 1, 1] [2025-03-04 15:30:27,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-03-04 15:30:27,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-03-04 15:30:27,768 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-04 15:30:27,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:30:27,768 INFO L85 PathProgramCache]: Analyzing trace with hash -305039772, now seen corresponding path program 1 times [2025-03-04 15:30:27,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:30:27,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354494961] [2025-03-04 15:30:27,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:27,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:30:27,780 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-03-04 15:30:27,790 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-04 15:30:27,790 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:27,790 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:28,052 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:28,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:30:28,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354494961] [2025-03-04 15:30:28,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354494961] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:30:28,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938783681] [2025-03-04 15:30:28,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:30:28,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:30:28,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:30:28,054 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:30:28,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-04 15:30:28,159 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-03-04 15:30:28,189 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-04 15:30:28,190 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:30:28,190 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:28,191 INFO L256 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-03-04 15:30:28,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:30:28,243 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:28,243 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:30:28,636 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:30:28,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938783681] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:30:28,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:30:28,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2025-03-04 15:30:28,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595426481] [2025-03-04 15:30:28,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:30:28,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-03-04 15:30:28,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:30:28,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-03-04 15:30:28,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2025-03-04 15:30:28,750 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 77 [2025-03-04 15:30:28,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 401 transitions, 4323 flow. Second operand has 48 states, 48 states have (on average 19.0625) internal successors, (915), 48 states have internal predecessors, (915), 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) [2025-03-04 15:30:28,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:30:28,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 77 [2025-03-04 15:30:28,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:30:34,910 INFO L124 PetriNetUnfolderBase]: 17065/35606 cut-off events. [2025-03-04 15:30:34,910 INFO L125 PetriNetUnfolderBase]: For 198883/198883 co-relation queries the response was YES. [2025-03-04 15:30:35,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135337 conditions, 35606 events. 17065/35606 cut-off events. For 198883/198883 co-relation queries the response was YES. Maximal size of possible extension queue 740. Compared 313939 event pairs, 9935 based on Foata normal form. 1536/37038 useless extension candidates. Maximal degree in co-relation 135290. Up to 24575 conditions per place. [2025-03-04 15:30:35,257 INFO L140 encePairwiseOnDemand]: 61/77 looper letters, 100 selfloop transitions, 614 changer transitions 0/725 dead transitions. [2025-03-04 15:30:35,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 725 transitions, 9447 flow [2025-03-04 15:30:35,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2025-03-04 15:30:35,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2025-03-04 15:30:35,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 1153 transitions. [2025-03-04 15:30:35,260 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3255223037831734 [2025-03-04 15:30:35,260 INFO L175 Difference]: Start difference. First operand has 166 places, 401 transitions, 4323 flow. Second operand 46 states and 1153 transitions. [2025-03-04 15:30:35,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 725 transitions, 9447 flow [2025-03-04 15:30:35,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 725 transitions, 9238 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 15:30:35,828 INFO L231 Difference]: Finished difference. Result has 220 places, 725 transitions, 9328 flow [2025-03-04 15:30:35,828 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=4222, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=315, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=9328, PETRI_PLACES=220, PETRI_TRANSITIONS=725} [2025-03-04 15:30:35,829 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 147 predicate places. [2025-03-04 15:30:35,829 INFO L471 AbstractCegarLoop]: Abstraction has has 220 places, 725 transitions, 9328 flow [2025-03-04 15:30:35,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 19.0625) internal successors, (915), 48 states have internal predecessors, (915), 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) [2025-03-04 15:30:35,829 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:30:35,829 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:30:35,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-04 15:30:36,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-03-04 15:30:36,030 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-04 15:30:36,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:30:36,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1458402995, now seen corresponding path program 2 times [2025-03-04 15:30:36,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:30:36,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212367224] [2025-03-04 15:30:36,030 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:30:36,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:30:36,040 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-03-04 15:30:36,048 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-03-04 15:30:36,049 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:30:36,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:36,140 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-04 15:30:36,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:30:36,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212367224] [2025-03-04 15:30:36,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212367224] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:30:36,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212311187] [2025-03-04 15:30:36,140 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:30:36,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:30:36,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:30:36,142 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:30:36,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-04 15:30:36,258 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-03-04 15:30:36,291 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-03-04 15:30:36,291 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:30:36,291 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:36,294 INFO L256 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 15:30:36,295 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:30:36,330 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-04 15:30:36,330 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:30:36,395 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-04 15:30:36,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212311187] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:30:36,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:30:36,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-04 15:30:36,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756797473] [2025-03-04 15:30:36,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:30:36,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-04 15:30:36,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:30:36,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-04 15:30:36,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-03-04 15:30:36,397 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2025-03-04 15:30:36,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 725 transitions, 9328 flow. Second operand has 13 states, 13 states have (on average 31.53846153846154) internal successors, (410), 13 states have internal predecessors, (410), 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) [2025-03-04 15:30:36,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:30:36,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2025-03-04 15:30:36,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:30:49,248 INFO L124 PetriNetUnfolderBase]: 46609/82016 cut-off events. [2025-03-04 15:30:49,248 INFO L125 PetriNetUnfolderBase]: For 283420/283420 co-relation queries the response was YES. [2025-03-04 15:30:50,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281993 conditions, 82016 events. 46609/82016 cut-off events. For 283420/283420 co-relation queries the response was YES. Maximal size of possible extension queue 1261. Compared 704216 event pairs, 4299 based on Foata normal form. 3816/85752 useless extension candidates. Maximal degree in co-relation 281934. Up to 15955 conditions per place. [2025-03-04 15:30:50,520 INFO L140 encePairwiseOnDemand]: 73/77 looper letters, 824 selfloop transitions, 47 changer transitions 0/884 dead transitions. [2025-03-04 15:30:50,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 884 transitions, 11790 flow [2025-03-04 15:30:50,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-04 15:30:50,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-04 15:30:50,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 497 transitions. [2025-03-04 15:30:50,521 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5378787878787878 [2025-03-04 15:30:50,521 INFO L175 Difference]: Start difference. First operand has 220 places, 725 transitions, 9328 flow. Second operand 12 states and 497 transitions. [2025-03-04 15:30:50,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 884 transitions, 11790 flow [2025-03-04 15:30:51,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 884 transitions, 10320 flow, removed 421 selfloop flow, removed 21 redundant places. [2025-03-04 15:30:51,580 INFO L231 Difference]: Finished difference. Result has 220 places, 764 transitions, 8460 flow [2025-03-04 15:30:51,581 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=7858, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=725, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=711, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8460, PETRI_PLACES=220, PETRI_TRANSITIONS=764} [2025-03-04 15:30:51,581 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 147 predicate places. [2025-03-04 15:30:51,581 INFO L471 AbstractCegarLoop]: Abstraction has has 220 places, 764 transitions, 8460 flow [2025-03-04 15:30:51,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 31.53846153846154) internal successors, (410), 13 states have internal predecessors, (410), 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) [2025-03-04 15:30:51,581 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:30:51,581 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:30:51,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-03-04 15:30:51,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-03-04 15:30:51,785 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-04 15:30:51,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:30:51,786 INFO L85 PathProgramCache]: Analyzing trace with hash -872175025, now seen corresponding path program 3 times [2025-03-04 15:30:51,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:30:51,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014553981] [2025-03-04 15:30:51,786 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 15:30:51,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:30:51,798 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 62 statements into 11 equivalence classes. [2025-03-04 15:30:51,820 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 30 of 62 statements. [2025-03-04 15:30:51,820 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-04 15:30:51,820 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:51,984 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 2 proven. 39 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2025-03-04 15:30:51,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:30:51,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014553981] [2025-03-04 15:30:51,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014553981] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:30:51,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674429452] [2025-03-04 15:30:51,985 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 15:30:51,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:30:51,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:30:51,987 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:30:51,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-04 15:30:52,111 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 62 statements into 11 equivalence classes. [2025-03-04 15:30:52,140 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 30 of 62 statements. [2025-03-04 15:30:52,140 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-04 15:30:52,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:30:52,141 INFO L256 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-04 15:30:52,143 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:30:52,300 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2025-03-04 15:30:52,300 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:30:52,756 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2025-03-04 15:30:52,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674429452] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:30:52,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:30:52,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2025-03-04 15:30:52,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012616095] [2025-03-04 15:30:52,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:30:52,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-04 15:30:52,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:30:52,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-04 15:30:52,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2025-03-04 15:30:52,859 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 77 [2025-03-04 15:30:52,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 764 transitions, 8460 flow. Second operand has 19 states, 19 states have (on average 21.263157894736842) internal successors, (404), 19 states have internal predecessors, (404), 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) [2025-03-04 15:30:52,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:30:52,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 77 [2025-03-04 15:30:52,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand