./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-three-array-sum.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 c1d27b7f98ac68d2da6120346c107c87df7f6f708200f0d5d2c806741122116e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:28:18,572 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:28:18,637 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:28:18,644 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:28:18,645 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:28:18,672 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:28:18,673 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:28:18,674 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:28:18,675 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:28:18,676 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:28:18,677 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:28:18,677 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:28:18,678 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:28:18,679 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:28:18,679 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:28:18,680 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:28:18,680 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:28:18,681 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:28:18,684 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:28:18,684 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:28:18,685 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:28:18,685 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:28:18,686 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:28:18,686 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:28:18,687 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:28:18,687 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:28:18,687 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:28:18,687 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:28:18,688 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:28:18,688 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:28:18,689 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:28:18,689 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:28:18,689 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:28:18,690 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:28:18,690 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:28:18,690 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:28:18,690 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:28:18,691 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:28:18,691 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:28:18,691 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:28:18,691 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:28:18,692 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:28:18,692 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:28:18,692 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:28:18,693 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1d27b7f98ac68d2da6120346c107c87df7f6f708200f0d5d2c806741122116e [2024-11-10 22:28:18,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:28:18,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:28:18,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:28:18,973 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:28:18,973 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:28:18,974 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2024-11-10 22:28:20,370 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:28:20,558 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:28:20,558 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2024-11-10 22:28:20,565 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bb09c73e/d926e707fdb64a59b8a0654aaf8b1fea/FLAG64bd58234 [2024-11-10 22:28:20,936 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bb09c73e/d926e707fdb64a59b8a0654aaf8b1fea [2024-11-10 22:28:20,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:28:20,939 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:28:20,942 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:28:20,942 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:28:20,947 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:28:20,948 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:28:20" (1/1) ... [2024-11-10 22:28:20,949 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a33f8fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:20, skipping insertion in model container [2024-11-10 22:28:20,949 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:28:20" (1/1) ... [2024-11-10 22:28:20,972 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:28:21,187 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:28:21,195 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:28:21,226 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:28:21,242 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:28:21,242 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:21 WrapperNode [2024-11-10 22:28:21,242 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:28:21,243 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:28:21,243 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:28:21,244 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:28:21,250 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:21" (1/1) ... [2024-11-10 22:28:21,256 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:21" (1/1) ... [2024-11-10 22:28:21,281 INFO L138 Inliner]: procedures = 25, calls = 30, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 143 [2024-11-10 22:28:21,282 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:28:21,282 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:28:21,283 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:28:21,283 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:28:21,291 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:21" (1/1) ... [2024-11-10 22:28:21,291 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:21" (1/1) ... [2024-11-10 22:28:21,294 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:21" (1/1) ... [2024-11-10 22:28:21,311 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-11-10 22:28:21,312 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:21" (1/1) ... [2024-11-10 22:28:21,312 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:21" (1/1) ... [2024-11-10 22:28:21,318 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:21" (1/1) ... [2024-11-10 22:28:21,319 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:21" (1/1) ... [2024-11-10 22:28:21,320 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:21" (1/1) ... [2024-11-10 22:28:21,321 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:21" (1/1) ... [2024-11-10 22:28:21,324 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:28:21,325 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:28:21,325 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:28:21,326 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:28:21,326 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:21" (1/1) ... [2024-11-10 22:28:21,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:28:21,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:21,366 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 22:28:21,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 22:28:21,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:28:21,411 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 22:28:21,411 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 22:28:21,411 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 22:28:21,411 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 22:28:21,412 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 22:28:21,412 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 22:28:21,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:28:21,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 22:28:21,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 22:28:21,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 22:28:21,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 22:28:21,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 22:28:21,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 22:28:21,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:28:21,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:28:21,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 22:28:21,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 22:28:21,415 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 22:28:21,511 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:28:21,513 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:28:21,888 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:28:21,888 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:28:22,130 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:28:22,130 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:28:22,131 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:28:22 BoogieIcfgContainer [2024-11-10 22:28:22,131 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:28:22,134 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:28:22,135 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:28:22,138 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:28:22,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:28:20" (1/3) ... [2024-11-10 22:28:22,139 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@708ac4ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:28:22, skipping insertion in model container [2024-11-10 22:28:22,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:21" (2/3) ... [2024-11-10 22:28:22,139 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@708ac4ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:28:22, skipping insertion in model container [2024-11-10 22:28:22,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:28:22" (3/3) ... [2024-11-10 22:28:22,141 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-sum.wvr.c [2024-11-10 22:28:22,158 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:28:22,158 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2024-11-10 22:28:22,158 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:28:22,222 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 22:28:22,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 81 transitions, 183 flow [2024-11-10 22:28:22,308 INFO L124 PetriNetUnfolderBase]: 13/78 cut-off events. [2024-11-10 22:28:22,311 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 22:28:22,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 78 events. 13/78 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 177 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2024-11-10 22:28:22,319 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 81 transitions, 183 flow [2024-11-10 22:28:22,322 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 76 transitions, 167 flow [2024-11-10 22:28:22,332 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:28:22,338 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;@665d4e25, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:28:22,338 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-11-10 22:28:22,343 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:28:22,344 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2024-11-10 22:28:22,345 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:28:22,345 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:22,346 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 22:28:22,346 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-10 22:28:22,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:22,354 INFO L85 PathProgramCache]: Analyzing trace with hash 17090865, now seen corresponding path program 1 times [2024-11-10 22:28:22,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:22,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196431057] [2024-11-10 22:28:22,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:22,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:22,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:22,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:22,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196431057] [2024-11-10 22:28:22,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196431057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:22,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:28:22,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:28:22,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778901484] [2024-11-10 22:28:22,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:22,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:28:22,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:22,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:28:22,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:28:22,839 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 81 [2024-11-10 22:28:22,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 76 transitions, 167 flow. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:22,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:22,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 81 [2024-11-10 22:28:22,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:23,201 INFO L124 PetriNetUnfolderBase]: 830/1675 cut-off events. [2024-11-10 22:28:23,202 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2024-11-10 22:28:23,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2907 conditions, 1675 events. 830/1675 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 10967 event pairs, 594 based on Foata normal form. 192/1554 useless extension candidates. Maximal degree in co-relation 2574. Up to 1126 conditions per place. [2024-11-10 22:28:23,223 INFO L140 encePairwiseOnDemand]: 59/81 looper letters, 38 selfloop transitions, 10 changer transitions 0/79 dead transitions. [2024-11-10 22:28:23,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 79 transitions, 269 flow [2024-11-10 22:28:23,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:28:23,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:28:23,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 199 transitions. [2024-11-10 22:28:23,235 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6141975308641975 [2024-11-10 22:28:23,236 INFO L175 Difference]: Start difference. First operand has 73 places, 76 transitions, 167 flow. Second operand 4 states and 199 transitions. [2024-11-10 22:28:23,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 79 transitions, 269 flow [2024-11-10 22:28:23,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 79 transitions, 260 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-10 22:28:23,248 INFO L231 Difference]: Finished difference. Result has 74 places, 79 transitions, 234 flow [2024-11-10 22:28:23,250 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=234, PETRI_PLACES=74, PETRI_TRANSITIONS=79} [2024-11-10 22:28:23,255 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 1 predicate places. [2024-11-10 22:28:23,255 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 79 transitions, 234 flow [2024-11-10 22:28:23,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:23,255 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:23,256 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-10 22:28:23,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 22:28:23,256 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-10 22:28:23,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:23,257 INFO L85 PathProgramCache]: Analyzing trace with hash -218263280, now seen corresponding path program 1 times [2024-11-10 22:28:23,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:23,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654202319] [2024-11-10 22:28:23,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:23,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:23,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:23,389 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:23,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:23,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654202319] [2024-11-10 22:28:23,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654202319] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:23,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636511279] [2024-11-10 22:28:23,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:23,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:23,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:23,394 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:28:23,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 22:28:23,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:23,497 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:28:23,501 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:23,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:23,557 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:28:23,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636511279] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:23,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:28:23,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-10 22:28:23,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674227791] [2024-11-10 22:28:23,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:23,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:28:23,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:23,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:28:23,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:28:23,609 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 81 [2024-11-10 22:28:23,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 79 transitions, 234 flow. Second operand has 6 states, 6 states have (on average 34.833333333333336) internal successors, (209), 6 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:23,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:23,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 81 [2024-11-10 22:28:23,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:23,944 INFO L124 PetriNetUnfolderBase]: 830/1672 cut-off events. [2024-11-10 22:28:23,945 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2024-11-10 22:28:23,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2892 conditions, 1672 events. 830/1672 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 10933 event pairs, 594 based on Foata normal form. 3/1362 useless extension candidates. Maximal degree in co-relation 2813. Up to 1111 conditions per place. [2024-11-10 22:28:23,960 INFO L140 encePairwiseOnDemand]: 68/81 looper letters, 28 selfloop transitions, 17 changer transitions 0/76 dead transitions. [2024-11-10 22:28:23,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 76 transitions, 312 flow [2024-11-10 22:28:23,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:28:23,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:28:23,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 252 transitions. [2024-11-10 22:28:23,964 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-11-10 22:28:23,964 INFO L175 Difference]: Start difference. First operand has 74 places, 79 transitions, 234 flow. Second operand 6 states and 252 transitions. [2024-11-10 22:28:23,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 76 transitions, 312 flow [2024-11-10 22:28:23,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 76 transitions, 312 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:28:23,967 INFO L231 Difference]: Finished difference. Result has 76 places, 76 transitions, 256 flow [2024-11-10 22:28:23,967 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=256, PETRI_PLACES=76, PETRI_TRANSITIONS=76} [2024-11-10 22:28:23,968 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 3 predicate places. [2024-11-10 22:28:23,968 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 76 transitions, 256 flow [2024-11-10 22:28:23,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.833333333333336) internal successors, (209), 6 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:23,969 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:23,969 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-10 22:28:23,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-10 22:28:24,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:24,170 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-10 22:28:24,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:24,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1823773357, now seen corresponding path program 1 times [2024-11-10 22:28:24,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:24,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121070563] [2024-11-10 22:28:24,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:24,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:24,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:24,280 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:24,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:24,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121070563] [2024-11-10 22:28:24,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121070563] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:24,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912385213] [2024-11-10 22:28:24,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:24,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:24,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:24,283 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:28:24,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 22:28:24,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:24,354 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:28:24,355 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:24,385 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:24,385 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:24,434 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:24,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912385213] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:24,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:24,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-10 22:28:24,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737995631] [2024-11-10 22:28:24,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:24,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:28:24,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:24,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:28:24,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:28:24,522 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 81 [2024-11-10 22:28:24,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 76 transitions, 256 flow. Second operand has 12 states, 12 states have (on average 35.083333333333336) internal successors, (421), 12 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:24,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:24,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 81 [2024-11-10 22:28:24,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:24,899 INFO L124 PetriNetUnfolderBase]: 839/1726 cut-off events. [2024-11-10 22:28:24,899 INFO L125 PetriNetUnfolderBase]: For 213/213 co-relation queries the response was YES. [2024-11-10 22:28:24,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3051 conditions, 1726 events. 839/1726 cut-off events. For 213/213 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 11459 event pairs, 594 based on Foata normal form. 9/1425 useless extension candidates. Maximal degree in co-relation 2815. Up to 1126 conditions per place. [2024-11-10 22:28:24,911 INFO L140 encePairwiseOnDemand]: 68/81 looper letters, 35 selfloop transitions, 37 changer transitions 0/103 dead transitions. [2024-11-10 22:28:24,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 103 transitions, 574 flow [2024-11-10 22:28:24,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:28:24,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:28:24,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 421 transitions. [2024-11-10 22:28:24,914 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.519753086419753 [2024-11-10 22:28:24,914 INFO L175 Difference]: Start difference. First operand has 76 places, 76 transitions, 256 flow. Second operand 10 states and 421 transitions. [2024-11-10 22:28:24,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 103 transitions, 574 flow [2024-11-10 22:28:24,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 103 transitions, 491 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-10 22:28:24,918 INFO L231 Difference]: Finished difference. Result has 83 places, 103 transitions, 471 flow [2024-11-10 22:28:24,918 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=471, PETRI_PLACES=83, PETRI_TRANSITIONS=103} [2024-11-10 22:28:24,919 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 10 predicate places. [2024-11-10 22:28:24,919 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 103 transitions, 471 flow [2024-11-10 22:28:24,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 35.083333333333336) internal successors, (421), 12 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:24,920 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:24,920 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:24,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-10 22:28:25,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-10 22:28:25,122 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-10 22:28:25,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:25,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1172645359, now seen corresponding path program 1 times [2024-11-10 22:28:25,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:25,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511911666] [2024-11-10 22:28:25,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:25,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:25,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:25,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:25,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:25,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511911666] [2024-11-10 22:28:25,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511911666] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:25,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:28:25,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:28:25,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472994151] [2024-11-10 22:28:25,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:25,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:28:25,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:25,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:28:25,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:28:25,201 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 81 [2024-11-10 22:28:25,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 103 transitions, 471 flow. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:25,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:25,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 81 [2024-11-10 22:28:25,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:25,577 INFO L124 PetriNetUnfolderBase]: 1707/3271 cut-off events. [2024-11-10 22:28:25,577 INFO L125 PetriNetUnfolderBase]: For 258/258 co-relation queries the response was YES. [2024-11-10 22:28:25,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5831 conditions, 3271 events. 1707/3271 cut-off events. For 258/258 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 23137 event pairs, 914 based on Foata normal form. 86/2766 useless extension candidates. Maximal degree in co-relation 5727. Up to 1771 conditions per place. [2024-11-10 22:28:25,601 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 102 selfloop transitions, 4 changer transitions 0/138 dead transitions. [2024-11-10 22:28:25,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 138 transitions, 759 flow [2024-11-10 22:28:25,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:28:25,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:28:25,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 224 transitions. [2024-11-10 22:28:25,603 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.691358024691358 [2024-11-10 22:28:25,603 INFO L175 Difference]: Start difference. First operand has 83 places, 103 transitions, 471 flow. Second operand 4 states and 224 transitions. [2024-11-10 22:28:25,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 138 transitions, 759 flow [2024-11-10 22:28:25,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 138 transitions, 722 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-10 22:28:25,611 INFO L231 Difference]: Finished difference. Result has 86 places, 106 transitions, 463 flow [2024-11-10 22:28:25,613 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=463, PETRI_PLACES=86, PETRI_TRANSITIONS=106} [2024-11-10 22:28:25,614 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 13 predicate places. [2024-11-10 22:28:25,614 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 106 transitions, 463 flow [2024-11-10 22:28:25,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:25,615 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:25,615 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:25,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 22:28:25,615 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-10 22:28:25,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:25,616 INFO L85 PathProgramCache]: Analyzing trace with hash 756414975, now seen corresponding path program 1 times [2024-11-10 22:28:25,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:25,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263074418] [2024-11-10 22:28:25,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:25,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:25,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:25,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:25,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:25,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263074418] [2024-11-10 22:28:25,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263074418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:25,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:28:25,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:28:25,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606381143] [2024-11-10 22:28:25,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:25,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:28:25,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:25,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:28:25,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:28:25,704 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 81 [2024-11-10 22:28:25,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 106 transitions, 463 flow. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:25,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:25,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 81 [2024-11-10 22:28:25,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:26,099 INFO L124 PetriNetUnfolderBase]: 1889/3864 cut-off events. [2024-11-10 22:28:26,099 INFO L125 PetriNetUnfolderBase]: For 1412/1620 co-relation queries the response was YES. [2024-11-10 22:28:26,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7686 conditions, 3864 events. 1889/3864 cut-off events. For 1412/1620 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 28124 event pairs, 898 based on Foata normal form. 0/3269 useless extension candidates. Maximal degree in co-relation 7584. Up to 1970 conditions per place. [2024-11-10 22:28:26,125 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 88 selfloop transitions, 3 changer transitions 0/125 dead transitions. [2024-11-10 22:28:26,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 125 transitions, 705 flow [2024-11-10 22:28:26,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:28:26,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:28:26,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 171 transitions. [2024-11-10 22:28:26,127 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7037037037037037 [2024-11-10 22:28:26,127 INFO L175 Difference]: Start difference. First operand has 86 places, 106 transitions, 463 flow. Second operand 3 states and 171 transitions. [2024-11-10 22:28:26,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 125 transitions, 705 flow [2024-11-10 22:28:26,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 125 transitions, 699 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:28:26,133 INFO L231 Difference]: Finished difference. Result has 88 places, 108 transitions, 481 flow [2024-11-10 22:28:26,133 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=481, PETRI_PLACES=88, PETRI_TRANSITIONS=108} [2024-11-10 22:28:26,135 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 15 predicate places. [2024-11-10 22:28:26,135 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 108 transitions, 481 flow [2024-11-10 22:28:26,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:26,136 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:26,136 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:26,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 22:28:26,137 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-10 22:28:26,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:26,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1065337955, now seen corresponding path program 1 times [2024-11-10 22:28:26,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:26,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404198484] [2024-11-10 22:28:26,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:26,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:26,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:26,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:26,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:26,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404198484] [2024-11-10 22:28:26,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404198484] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:26,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:28:26,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:28:26,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327190] [2024-11-10 22:28:26,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:26,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:28:26,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:26,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:28:26,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:28:26,229 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 81 [2024-11-10 22:28:26,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 108 transitions, 481 flow. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:26,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:26,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 81 [2024-11-10 22:28:26,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:26,721 INFO L124 PetriNetUnfolderBase]: 2770/4992 cut-off events. [2024-11-10 22:28:26,721 INFO L125 PetriNetUnfolderBase]: For 2384/2707 co-relation queries the response was YES. [2024-11-10 22:28:26,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11093 conditions, 4992 events. 2770/4992 cut-off events. For 2384/2707 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 34463 event pairs, 1387 based on Foata normal form. 180/4698 useless extension candidates. Maximal degree in co-relation 10990. Up to 2904 conditions per place. [2024-11-10 22:28:26,757 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 107 selfloop transitions, 4 changer transitions 0/142 dead transitions. [2024-11-10 22:28:26,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 142 transitions, 809 flow [2024-11-10 22:28:26,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:28:26,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:28:26,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 216 transitions. [2024-11-10 22:28:26,759 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-10 22:28:26,759 INFO L175 Difference]: Start difference. First operand has 88 places, 108 transitions, 481 flow. Second operand 4 states and 216 transitions. [2024-11-10 22:28:26,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 142 transitions, 809 flow [2024-11-10 22:28:26,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 142 transitions, 806 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:28:26,764 INFO L231 Difference]: Finished difference. Result has 92 places, 109 transitions, 499 flow [2024-11-10 22:28:26,764 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=499, PETRI_PLACES=92, PETRI_TRANSITIONS=109} [2024-11-10 22:28:26,765 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 19 predicate places. [2024-11-10 22:28:26,765 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 109 transitions, 499 flow [2024-11-10 22:28:26,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:26,766 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:26,766 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:26,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 22:28:26,766 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-10 22:28:26,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:26,777 INFO L85 PathProgramCache]: Analyzing trace with hash 520349227, now seen corresponding path program 1 times [2024-11-10 22:28:26,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:26,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120594953] [2024-11-10 22:28:26,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:26,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:26,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:26,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 22:28:26,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:26,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120594953] [2024-11-10 22:28:26,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120594953] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:26,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:28:26,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:28:26,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331620499] [2024-11-10 22:28:26,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:26,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:28:26,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:26,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:28:26,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:28:26,929 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 81 [2024-11-10 22:28:26,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 109 transitions, 499 flow. Second operand has 5 states, 5 states have (on average 39.4) internal successors, (197), 5 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:26,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:26,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 81 [2024-11-10 22:28:26,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:27,545 INFO L124 PetriNetUnfolderBase]: 2618/5278 cut-off events. [2024-11-10 22:28:27,546 INFO L125 PetriNetUnfolderBase]: For 3588/3779 co-relation queries the response was YES. [2024-11-10 22:28:27,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11776 conditions, 5278 events. 2618/5278 cut-off events. For 3588/3779 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 38517 event pairs, 1530 based on Foata normal form. 110/4701 useless extension candidates. Maximal degree in co-relation 11605. Up to 2352 conditions per place. [2024-11-10 22:28:27,578 INFO L140 encePairwiseOnDemand]: 68/81 looper letters, 129 selfloop transitions, 24 changer transitions 0/185 dead transitions. [2024-11-10 22:28:27,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 185 transitions, 1140 flow [2024-11-10 22:28:27,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:28:27,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:28:27,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 322 transitions. [2024-11-10 22:28:27,580 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6625514403292181 [2024-11-10 22:28:27,580 INFO L175 Difference]: Start difference. First operand has 92 places, 109 transitions, 499 flow. Second operand 6 states and 322 transitions. [2024-11-10 22:28:27,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 185 transitions, 1140 flow [2024-11-10 22:28:27,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 185 transitions, 1122 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:28:27,587 INFO L231 Difference]: Finished difference. Result has 98 places, 120 transitions, 631 flow [2024-11-10 22:28:27,588 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=631, PETRI_PLACES=98, PETRI_TRANSITIONS=120} [2024-11-10 22:28:27,588 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 25 predicate places. [2024-11-10 22:28:27,588 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 120 transitions, 631 flow [2024-11-10 22:28:27,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.4) internal successors, (197), 5 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:27,589 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:27,589 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-10 22:28:27,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 22:28:27,589 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-10 22:28:27,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:27,590 INFO L85 PathProgramCache]: Analyzing trace with hash -678511696, now seen corresponding path program 2 times [2024-11-10 22:28:27,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:27,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228203276] [2024-11-10 22:28:27,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:27,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:27,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:27,746 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:27,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:27,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228203276] [2024-11-10 22:28:27,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228203276] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:27,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254554870] [2024-11-10 22:28:27,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:28:27,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:27,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:27,750 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:28:27,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 22:28:27,814 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 22:28:27,814 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:28:27,815 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:28:27,816 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:27,876 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:28:27,878 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:27,925 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:28:27,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254554870] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:27,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:27,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-10 22:28:27,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933543174] [2024-11-10 22:28:27,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:27,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 22:28:27,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:27,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 22:28:27,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-10 22:28:27,978 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 81 [2024-11-10 22:28:27,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 120 transitions, 631 flow. Second operand has 14 states, 14 states have (on average 32.142857142857146) internal successors, (450), 14 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:27,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:27,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 81 [2024-11-10 22:28:27,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:28,804 INFO L124 PetriNetUnfolderBase]: 2693/5473 cut-off events. [2024-11-10 22:28:28,805 INFO L125 PetriNetUnfolderBase]: For 4498/4498 co-relation queries the response was YES. [2024-11-10 22:28:28,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12906 conditions, 5473 events. 2693/5473 cut-off events. For 4498/4498 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 40865 event pairs, 2000 based on Foata normal form. 6/4960 useless extension candidates. Maximal degree in co-relation 12632. Up to 3654 conditions per place. [2024-11-10 22:28:28,840 INFO L140 encePairwiseOnDemand]: 66/81 looper letters, 45 selfloop transitions, 69 changer transitions 0/143 dead transitions. [2024-11-10 22:28:28,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 143 transitions, 979 flow [2024-11-10 22:28:28,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-10 22:28:28,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-10 22:28:28,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 846 transitions. [2024-11-10 22:28:28,843 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4351851851851852 [2024-11-10 22:28:28,844 INFO L175 Difference]: Start difference. First operand has 98 places, 120 transitions, 631 flow. Second operand 24 states and 846 transitions. [2024-11-10 22:28:28,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 143 transitions, 979 flow [2024-11-10 22:28:28,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 143 transitions, 979 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:28:28,865 INFO L231 Difference]: Finished difference. Result has 123 places, 139 transitions, 909 flow [2024-11-10 22:28:28,865 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=909, PETRI_PLACES=123, PETRI_TRANSITIONS=139} [2024-11-10 22:28:28,866 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 50 predicate places. [2024-11-10 22:28:28,866 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 139 transitions, 909 flow [2024-11-10 22:28:28,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 32.142857142857146) internal successors, (450), 14 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:28,866 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:28,867 INFO L204 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] [2024-11-10 22:28:28,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-10 22:28:29,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:29,068 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-10 22:28:29,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:29,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1184497894, now seen corresponding path program 1 times [2024-11-10 22:28:29,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:29,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006795867] [2024-11-10 22:28:29,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:29,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:29,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:29,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:29,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:29,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006795867] [2024-11-10 22:28:29,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006795867] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:29,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:28:29,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:28:29,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159044544] [2024-11-10 22:28:29,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:29,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:28:29,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:29,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:28:29,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:28:29,144 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 81 [2024-11-10 22:28:29,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 139 transitions, 909 flow. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:29,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:29,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 81 [2024-11-10 22:28:29,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:30,160 INFO L124 PetriNetUnfolderBase]: 5963/10723 cut-off events. [2024-11-10 22:28:30,160 INFO L125 PetriNetUnfolderBase]: For 9481/9689 co-relation queries the response was YES. [2024-11-10 22:28:30,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25947 conditions, 10723 events. 5963/10723 cut-off events. For 9481/9689 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 80886 event pairs, 2828 based on Foata normal form. 162/9783 useless extension candidates. Maximal degree in co-relation 25828. Up to 5186 conditions per place. [2024-11-10 22:28:30,243 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 137 selfloop transitions, 3 changer transitions 0/184 dead transitions. [2024-11-10 22:28:30,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 184 transitions, 1385 flow [2024-11-10 22:28:30,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:28:30,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:28:30,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 217 transitions. [2024-11-10 22:28:30,245 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6697530864197531 [2024-11-10 22:28:30,245 INFO L175 Difference]: Start difference. First operand has 123 places, 139 transitions, 909 flow. Second operand 4 states and 217 transitions. [2024-11-10 22:28:30,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 184 transitions, 1385 flow [2024-11-10 22:28:30,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 184 transitions, 1235 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-11-10 22:28:30,275 INFO L231 Difference]: Finished difference. Result has 119 places, 141 transitions, 781 flow [2024-11-10 22:28:30,275 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=759, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=781, PETRI_PLACES=119, PETRI_TRANSITIONS=141} [2024-11-10 22:28:30,276 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 46 predicate places. [2024-11-10 22:28:30,276 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 141 transitions, 781 flow [2024-11-10 22:28:30,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:30,277 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:30,277 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:30,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 22:28:30,277 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-10 22:28:30,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:30,278 INFO L85 PathProgramCache]: Analyzing trace with hash 946723705, now seen corresponding path program 1 times [2024-11-10 22:28:30,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:30,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76642440] [2024-11-10 22:28:30,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:30,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:30,345 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:30,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:30,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76642440] [2024-11-10 22:28:30,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76642440] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:30,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897500004] [2024-11-10 22:28:30,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:30,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:30,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:30,348 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:28:30,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 22:28:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:30,521 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:28:30,522 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:30,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 22:28:30,588 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:28:30,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897500004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:30,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:28:30,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2024-11-10 22:28:30,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859264906] [2024-11-10 22:28:30,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:30,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:28:30,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:30,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:28:30,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:28:30,615 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-11-10 22:28:30,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 141 transitions, 781 flow. Second operand has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:30,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:30,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-11-10 22:28:30,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:31,352 INFO L124 PetriNetUnfolderBase]: 4004/7770 cut-off events. [2024-11-10 22:28:31,352 INFO L125 PetriNetUnfolderBase]: For 6590/7187 co-relation queries the response was YES. [2024-11-10 22:28:31,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19258 conditions, 7770 events. 4004/7770 cut-off events. For 6590/7187 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 57870 event pairs, 2847 based on Foata normal form. 136/7374 useless extension candidates. Maximal degree in co-relation 19150. Up to 4838 conditions per place. [2024-11-10 22:28:31,410 INFO L140 encePairwiseOnDemand]: 68/81 looper letters, 146 selfloop transitions, 27 changer transitions 2/206 dead transitions. [2024-11-10 22:28:31,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 206 transitions, 1469 flow [2024-11-10 22:28:31,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:28:31,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:28:31,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 308 transitions. [2024-11-10 22:28:31,412 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6337448559670782 [2024-11-10 22:28:31,412 INFO L175 Difference]: Start difference. First operand has 119 places, 141 transitions, 781 flow. Second operand 6 states and 308 transitions. [2024-11-10 22:28:31,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 206 transitions, 1469 flow [2024-11-10 22:28:31,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 206 transitions, 1463 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:28:31,432 INFO L231 Difference]: Finished difference. Result has 125 places, 143 transitions, 861 flow [2024-11-10 22:28:31,432 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=861, PETRI_PLACES=125, PETRI_TRANSITIONS=143} [2024-11-10 22:28:31,433 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 52 predicate places. [2024-11-10 22:28:31,434 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 143 transitions, 861 flow [2024-11-10 22:28:31,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:31,435 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:31,435 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1] [2024-11-10 22:28:31,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-10 22:28:31,635 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 [2024-11-10 22:28:31,636 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-10 22:28:31,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:31,636 INFO L85 PathProgramCache]: Analyzing trace with hash -601208539, now seen corresponding path program 1 times [2024-11-10 22:28:31,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:31,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088418488] [2024-11-10 22:28:31,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:31,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:31,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:31,744 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-10 22:28:31,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:31,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088418488] [2024-11-10 22:28:31,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088418488] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:31,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:28:31,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:28:31,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252605354] [2024-11-10 22:28:31,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:31,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:28:31,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:31,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:28:31,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:28:31,781 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 81 [2024-11-10 22:28:31,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 143 transitions, 861 flow. Second operand has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:31,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:31,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 81 [2024-11-10 22:28:31,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:32,474 INFO L124 PetriNetUnfolderBase]: 3434/6721 cut-off events. [2024-11-10 22:28:32,475 INFO L125 PetriNetUnfolderBase]: For 6944/7382 co-relation queries the response was YES. [2024-11-10 22:28:32,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16658 conditions, 6721 events. 3434/6721 cut-off events. For 6944/7382 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 49035 event pairs, 2480 based on Foata normal form. 3/6000 useless extension candidates. Maximal degree in co-relation 16567. Up to 3916 conditions per place. [2024-11-10 22:28:32,516 INFO L140 encePairwiseOnDemand]: 69/81 looper letters, 99 selfloop transitions, 18 changer transitions 1/150 dead transitions. [2024-11-10 22:28:32,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 150 transitions, 1055 flow [2024-11-10 22:28:32,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:28:32,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:28:32,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 254 transitions. [2024-11-10 22:28:32,518 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6271604938271605 [2024-11-10 22:28:32,518 INFO L175 Difference]: Start difference. First operand has 125 places, 143 transitions, 861 flow. Second operand 5 states and 254 transitions. [2024-11-10 22:28:32,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 150 transitions, 1055 flow [2024-11-10 22:28:32,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 150 transitions, 1006 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 22:28:32,533 INFO L231 Difference]: Finished difference. Result has 126 places, 136 transitions, 774 flow [2024-11-10 22:28:32,533 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=774, PETRI_PLACES=126, PETRI_TRANSITIONS=136} [2024-11-10 22:28:32,534 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 53 predicate places. [2024-11-10 22:28:32,534 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 136 transitions, 774 flow [2024-11-10 22:28:32,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:32,535 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:32,535 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:32,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-10 22:28:32,535 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-10 22:28:32,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:32,536 INFO L85 PathProgramCache]: Analyzing trace with hash -431084871, now seen corresponding path program 1 times [2024-11-10 22:28:32,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:32,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147003220] [2024-11-10 22:28:32,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:32,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:32,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:32,608 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 22:28:32,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:32,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147003220] [2024-11-10 22:28:32,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147003220] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:32,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277725369] [2024-11-10 22:28:32,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:32,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:32,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:32,611 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:28:32,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 22:28:32,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:32,693 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 22:28:32,695 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:32,826 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:28:32,827 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:32,967 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:28:32,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277725369] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:32,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:32,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-11-10 22:28:32,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733661943] [2024-11-10 22:28:32,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:32,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-10 22:28:32,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:32,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-10 22:28:32,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-10 22:28:33,326 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 81 [2024-11-10 22:28:33,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 136 transitions, 774 flow. Second operand has 19 states, 19 states have (on average 30.42105263157895) internal successors, (578), 19 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:33,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:33,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 81 [2024-11-10 22:28:33,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:35,517 INFO L124 PetriNetUnfolderBase]: 7331/13087 cut-off events. [2024-11-10 22:28:35,518 INFO L125 PetriNetUnfolderBase]: For 11599/12306 co-relation queries the response was YES. [2024-11-10 22:28:35,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33193 conditions, 13087 events. 7331/13087 cut-off events. For 11599/12306 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 96651 event pairs, 1162 based on Foata normal form. 476/12720 useless extension candidates. Maximal degree in co-relation 33080. Up to 1998 conditions per place. [2024-11-10 22:28:35,599 INFO L140 encePairwiseOnDemand]: 62/81 looper letters, 281 selfloop transitions, 78 changer transitions 0/386 dead transitions. [2024-11-10 22:28:35,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 386 transitions, 2585 flow [2024-11-10 22:28:35,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-10 22:28:35,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-10 22:28:35,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 793 transitions. [2024-11-10 22:28:35,604 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5152696556205328 [2024-11-10 22:28:35,604 INFO L175 Difference]: Start difference. First operand has 126 places, 136 transitions, 774 flow. Second operand 19 states and 793 transitions. [2024-11-10 22:28:35,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 386 transitions, 2585 flow [2024-11-10 22:28:35,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 386 transitions, 2534 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:28:35,639 INFO L231 Difference]: Finished difference. Result has 144 places, 173 transitions, 1278 flow [2024-11-10 22:28:35,640 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1278, PETRI_PLACES=144, PETRI_TRANSITIONS=173} [2024-11-10 22:28:35,641 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 71 predicate places. [2024-11-10 22:28:35,642 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 173 transitions, 1278 flow [2024-11-10 22:28:35,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 30.42105263157895) internal successors, (578), 19 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:35,643 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:35,643 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:35,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-10 22:28:35,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-10 22:28:35,844 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-10 22:28:35,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:35,844 INFO L85 PathProgramCache]: Analyzing trace with hash 403776516, now seen corresponding path program 1 times [2024-11-10 22:28:35,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:35,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503846095] [2024-11-10 22:28:35,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:35,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:36,067 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:28:36,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:36,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503846095] [2024-11-10 22:28:36,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503846095] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:36,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087204968] [2024-11-10 22:28:36,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:36,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:36,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:36,070 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:28:36,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 22:28:36,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:36,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 22:28:36,151 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:36,285 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:28:36,286 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:36,424 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:28:36,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087204968] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:36,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:36,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-10 22:28:36,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026811557] [2024-11-10 22:28:36,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:36,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-10 22:28:36,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:36,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-10 22:28:36,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2024-11-10 22:28:36,780 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 81 [2024-11-10 22:28:36,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 173 transitions, 1278 flow. Second operand has 22 states, 22 states have (on average 32.36363636363637) internal successors, (712), 22 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:36,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:36,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 81 [2024-11-10 22:28:36,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:38,458 INFO L124 PetriNetUnfolderBase]: 6118/12271 cut-off events. [2024-11-10 22:28:38,458 INFO L125 PetriNetUnfolderBase]: For 18412/19083 co-relation queries the response was YES. [2024-11-10 22:28:38,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32681 conditions, 12271 events. 6118/12271 cut-off events. For 18412/19083 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 100485 event pairs, 4737 based on Foata normal form. 87/11289 useless extension candidates. Maximal degree in co-relation 32572. Up to 4539 conditions per place. [2024-11-10 22:28:38,640 INFO L140 encePairwiseOnDemand]: 68/81 looper letters, 68 selfloop transitions, 76 changer transitions 0/176 dead transitions. [2024-11-10 22:28:38,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 176 transitions, 1453 flow [2024-11-10 22:28:38,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-10 22:28:38,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-10 22:28:38,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 533 transitions. [2024-11-10 22:28:38,643 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47001763668430335 [2024-11-10 22:28:38,643 INFO L175 Difference]: Start difference. First operand has 144 places, 173 transitions, 1278 flow. Second operand 14 states and 533 transitions. [2024-11-10 22:28:38,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 176 transitions, 1453 flow [2024-11-10 22:28:38,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 176 transitions, 1325 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-11-10 22:28:38,689 INFO L231 Difference]: Finished difference. Result has 151 places, 153 transitions, 1106 flow [2024-11-10 22:28:38,689 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=937, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1106, PETRI_PLACES=151, PETRI_TRANSITIONS=153} [2024-11-10 22:28:38,689 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 78 predicate places. [2024-11-10 22:28:38,690 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 153 transitions, 1106 flow [2024-11-10 22:28:38,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 32.36363636363637) internal successors, (712), 22 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:38,690 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:38,690 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:38,703 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 22:28:38,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:38,892 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-10 22:28:38,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:38,892 INFO L85 PathProgramCache]: Analyzing trace with hash 661131405, now seen corresponding path program 1 times [2024-11-10 22:28:38,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:38,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922599143] [2024-11-10 22:28:38,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:38,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:38,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:39,063 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-10 22:28:39,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:39,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922599143] [2024-11-10 22:28:39,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922599143] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:39,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:28:39,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:28:39,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777808] [2024-11-10 22:28:39,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:39,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:28:39,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:39,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:28:39,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:28:39,087 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-11-10 22:28:39,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 153 transitions, 1106 flow. Second operand has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:39,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:39,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-11-10 22:28:39,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:40,412 INFO L124 PetriNetUnfolderBase]: 6906/12567 cut-off events. [2024-11-10 22:28:40,416 INFO L125 PetriNetUnfolderBase]: For 11034/11812 co-relation queries the response was YES. [2024-11-10 22:28:40,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32011 conditions, 12567 events. 6906/12567 cut-off events. For 11034/11812 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 97452 event pairs, 5369 based on Foata normal form. 120/11960 useless extension candidates. Maximal degree in co-relation 31899. Up to 9256 conditions per place. [2024-11-10 22:28:40,475 INFO L140 encePairwiseOnDemand]: 69/81 looper letters, 89 selfloop transitions, 17 changer transitions 31/170 dead transitions. [2024-11-10 22:28:40,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 170 transitions, 1450 flow [2024-11-10 22:28:40,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:28:40,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:28:40,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 289 transitions. [2024-11-10 22:28:40,476 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5946502057613169 [2024-11-10 22:28:40,477 INFO L175 Difference]: Start difference. First operand has 151 places, 153 transitions, 1106 flow. Second operand 6 states and 289 transitions. [2024-11-10 22:28:40,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 170 transitions, 1450 flow [2024-11-10 22:28:40,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 170 transitions, 1306 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-11-10 22:28:40,520 INFO L231 Difference]: Finished difference. Result has 146 places, 139 transitions, 900 flow [2024-11-10 22:28:40,521 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=962, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=900, PETRI_PLACES=146, PETRI_TRANSITIONS=139} [2024-11-10 22:28:40,521 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 73 predicate places. [2024-11-10 22:28:40,521 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 139 transitions, 900 flow [2024-11-10 22:28:40,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:40,522 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:40,522 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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, 1] [2024-11-10 22:28:40,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-10 22:28:40,522 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-10 22:28:40,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:40,522 INFO L85 PathProgramCache]: Analyzing trace with hash 281487623, now seen corresponding path program 1 times [2024-11-10 22:28:40,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:40,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061825194] [2024-11-10 22:28:40,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:40,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:40,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:40,613 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 22:28:40,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:40,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061825194] [2024-11-10 22:28:40,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061825194] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:40,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519628814] [2024-11-10 22:28:40,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:40,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:40,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:40,616 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:28:40,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 22:28:40,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:40,710 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:28:40,711 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:40,737 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 22:28:40,737 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:40,771 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 22:28:40,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519628814] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:40,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:40,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-10 22:28:40,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684405147] [2024-11-10 22:28:40,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:40,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 22:28:40,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:40,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 22:28:40,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-10 22:28:40,801 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 81 [2024-11-10 22:28:40,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 139 transitions, 900 flow. Second operand has 10 states, 10 states have (on average 39.7) internal successors, (397), 10 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:40,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:40,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 81 [2024-11-10 22:28:40,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:43,161 INFO L124 PetriNetUnfolderBase]: 12412/21676 cut-off events. [2024-11-10 22:28:43,161 INFO L125 PetriNetUnfolderBase]: For 18209/19938 co-relation queries the response was YES. [2024-11-10 22:28:43,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55209 conditions, 21676 events. 12412/21676 cut-off events. For 18209/19938 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 173606 event pairs, 2079 based on Foata normal form. 653/21808 useless extension candidates. Maximal degree in co-relation 55109. Up to 4333 conditions per place. [2024-11-10 22:28:43,300 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 258 selfloop transitions, 15 changer transitions 0/317 dead transitions. [2024-11-10 22:28:43,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 317 transitions, 2176 flow [2024-11-10 22:28:43,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:28:43,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:28:43,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 526 transitions. [2024-11-10 22:28:43,302 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6493827160493827 [2024-11-10 22:28:43,303 INFO L175 Difference]: Start difference. First operand has 146 places, 139 transitions, 900 flow. Second operand 10 states and 526 transitions. [2024-11-10 22:28:43,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 317 transitions, 2176 flow [2024-11-10 22:28:43,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 317 transitions, 2045 flow, removed 40 selfloop flow, removed 9 redundant places. [2024-11-10 22:28:43,415 INFO L231 Difference]: Finished difference. Result has 141 places, 147 transitions, 925 flow [2024-11-10 22:28:43,415 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=925, PETRI_PLACES=141, PETRI_TRANSITIONS=147} [2024-11-10 22:28:43,416 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 68 predicate places. [2024-11-10 22:28:43,416 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 147 transitions, 925 flow [2024-11-10 22:28:43,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 39.7) internal successors, (397), 10 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:43,416 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:43,416 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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, 1] [2024-11-10 22:28:43,431 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-10 22:28:43,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:43,617 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-10 22:28:43,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:43,618 INFO L85 PathProgramCache]: Analyzing trace with hash 281487622, now seen corresponding path program 1 times [2024-11-10 22:28:43,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:43,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151976689] [2024-11-10 22:28:43,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:43,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:43,703 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 22:28:43,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:43,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151976689] [2024-11-10 22:28:43,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151976689] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:43,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524190034] [2024-11-10 22:28:43,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:43,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:43,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:43,706 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:28:43,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 22:28:43,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:43,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 22:28:43,802 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:43,819 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 22:28:43,820 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:28:43,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524190034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:43,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:28:43,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-10 22:28:43,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349937353] [2024-11-10 22:28:43,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:43,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:28:43,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:43,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:28:43,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-10 22:28:43,832 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-11-10 22:28:43,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 147 transitions, 925 flow. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:43,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:43,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-11-10 22:28:43,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:45,858 INFO L124 PetriNetUnfolderBase]: 12022/20848 cut-off events. [2024-11-10 22:28:45,858 INFO L125 PetriNetUnfolderBase]: For 27731/28978 co-relation queries the response was YES. [2024-11-10 22:28:45,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56199 conditions, 20848 events. 12022/20848 cut-off events. For 27731/28978 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 162773 event pairs, 2051 based on Foata normal form. 1550/21039 useless extension candidates. Maximal degree in co-relation 56106. Up to 7539 conditions per place. [2024-11-10 22:28:45,978 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 130 selfloop transitions, 11 changer transitions 0/184 dead transitions. [2024-11-10 22:28:45,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 184 transitions, 1330 flow [2024-11-10 22:28:45,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:28:45,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:28:45,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 207 transitions. [2024-11-10 22:28:45,980 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-11-10 22:28:45,980 INFO L175 Difference]: Start difference. First operand has 141 places, 147 transitions, 925 flow. Second operand 4 states and 207 transitions. [2024-11-10 22:28:45,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 184 transitions, 1330 flow [2024-11-10 22:28:46,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 184 transitions, 1315 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-10 22:28:46,035 INFO L231 Difference]: Finished difference. Result has 137 places, 142 transitions, 897 flow [2024-11-10 22:28:46,036 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=875, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=897, PETRI_PLACES=137, PETRI_TRANSITIONS=142} [2024-11-10 22:28:46,036 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 64 predicate places. [2024-11-10 22:28:46,036 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 142 transitions, 897 flow [2024-11-10 22:28:46,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:46,036 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:46,037 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 3, 2, 2, 2, 1, 1, 1, 1] [2024-11-10 22:28:46,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-10 22:28:46,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-10 22:28:46,237 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-10 22:28:46,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:46,238 INFO L85 PathProgramCache]: Analyzing trace with hash -46041245, now seen corresponding path program 2 times [2024-11-10 22:28:46,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:46,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124729419] [2024-11-10 22:28:46,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:46,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:46,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:46,649 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 42 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:46,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:46,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124729419] [2024-11-10 22:28:46,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124729419] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:46,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936866795] [2024-11-10 22:28:46,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:28:46,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:46,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:46,652 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) [2024-11-10 22:28:46,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 22:28:46,732 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 22:28:46,732 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:28:46,733 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:28:46,734 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:46,819 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-10 22:28:46,819 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:46,888 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-10 22:28:46,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936866795] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:46,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:46,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 3, 3] total 21 [2024-11-10 22:28:46,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740406809] [2024-11-10 22:28:46,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:46,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-10 22:28:46,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:46,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-10 22:28:46,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2024-11-10 22:28:47,228 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 81 [2024-11-10 22:28:47,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 142 transitions, 897 flow. Second operand has 22 states, 22 states have (on average 32.27272727272727) internal successors, (710), 22 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:47,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:47,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 81 [2024-11-10 22:28:47,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:50,117 INFO L124 PetriNetUnfolderBase]: 12106/22403 cut-off events. [2024-11-10 22:28:50,117 INFO L125 PetriNetUnfolderBase]: For 35303/36051 co-relation queries the response was YES. [2024-11-10 22:28:50,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61740 conditions, 22403 events. 12106/22403 cut-off events. For 35303/36051 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 183980 event pairs, 8830 based on Foata normal form. 128/20831 useless extension candidates. Maximal degree in co-relation 61642. Up to 9998 conditions per place. [2024-11-10 22:28:50,294 INFO L140 encePairwiseOnDemand]: 66/81 looper letters, 72 selfloop transitions, 81 changer transitions 0/185 dead transitions. [2024-11-10 22:28:50,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 185 transitions, 1430 flow [2024-11-10 22:28:50,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-10 22:28:50,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-10 22:28:50,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 760 transitions. [2024-11-10 22:28:50,296 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4467960023515579 [2024-11-10 22:28:50,296 INFO L175 Difference]: Start difference. First operand has 137 places, 142 transitions, 897 flow. Second operand 21 states and 760 transitions. [2024-11-10 22:28:50,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 185 transitions, 1430 flow [2024-11-10 22:28:50,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 185 transitions, 1352 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-11-10 22:28:50,349 INFO L231 Difference]: Finished difference. Result has 149 places, 153 transitions, 1080 flow [2024-11-10 22:28:50,350 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=819, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1080, PETRI_PLACES=149, PETRI_TRANSITIONS=153} [2024-11-10 22:28:50,350 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 76 predicate places. [2024-11-10 22:28:50,350 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 153 transitions, 1080 flow [2024-11-10 22:28:50,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 32.27272727272727) internal successors, (710), 22 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:50,350 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:50,350 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:50,363 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-10 22:28:50,551 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,SelfDestructingSolverStorable16 [2024-11-10 22:28:50,551 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-10 22:28:50,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:50,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1077147996, now seen corresponding path program 1 times [2024-11-10 22:28:50,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:50,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642247219] [2024-11-10 22:28:50,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:50,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:50,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:50,908 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 22:28:50,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:50,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642247219] [2024-11-10 22:28:50,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642247219] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:50,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094973293] [2024-11-10 22:28:50,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:50,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:50,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:50,911 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) [2024-11-10 22:28:50,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 22:28:51,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:51,011 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:28:51,013 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:51,037 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 22:28:51,037 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:51,075 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-10 22:28:51,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094973293] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:51,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:51,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-10 22:28:51,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10302009] [2024-11-10 22:28:51,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:51,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:28:51,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:51,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:28:51,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:28:51,094 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 81 [2024-11-10 22:28:51,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 153 transitions, 1080 flow. Second operand has 12 states, 12 states have (on average 40.0) internal successors, (480), 12 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:51,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:51,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 81 [2024-11-10 22:28:51,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:55,034 INFO L124 PetriNetUnfolderBase]: 20670/39294 cut-off events. [2024-11-10 22:28:55,035 INFO L125 PetriNetUnfolderBase]: For 42928/44110 co-relation queries the response was YES. [2024-11-10 22:28:55,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102227 conditions, 39294 events. 20670/39294 cut-off events. For 42928/44110 co-relation queries the response was YES. Maximal size of possible extension queue 840. Compared 352806 event pairs, 3934 based on Foata normal form. 1622/39336 useless extension candidates. Maximal degree in co-relation 102124. Up to 13413 conditions per place. [2024-11-10 22:28:55,325 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 271 selfloop transitions, 17 changer transitions 0/338 dead transitions. [2024-11-10 22:28:55,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 338 transitions, 2498 flow [2024-11-10 22:28:55,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:28:55,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:28:55,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 548 transitions. [2024-11-10 22:28:55,327 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6765432098765433 [2024-11-10 22:28:55,327 INFO L175 Difference]: Start difference. First operand has 149 places, 153 transitions, 1080 flow. Second operand 10 states and 548 transitions. [2024-11-10 22:28:55,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 338 transitions, 2498 flow [2024-11-10 22:28:55,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 338 transitions, 2303 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-11-10 22:28:55,379 INFO L231 Difference]: Finished difference. Result has 150 places, 162 transitions, 979 flow [2024-11-10 22:28:55,379 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=885, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=979, PETRI_PLACES=150, PETRI_TRANSITIONS=162} [2024-11-10 22:28:55,380 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 77 predicate places. [2024-11-10 22:28:55,380 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 162 transitions, 979 flow [2024-11-10 22:28:55,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 40.0) internal successors, (480), 12 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:55,381 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:55,381 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:55,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-10 22:28:55,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-10 22:28:55,581 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-10 22:28:55,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:55,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1787424042, now seen corresponding path program 1 times [2024-11-10 22:28:55,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:55,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57702060] [2024-11-10 22:28:55,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:55,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:55,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:55,644 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 22:28:55,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:55,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57702060] [2024-11-10 22:28:55,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57702060] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:55,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:28:55,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:28:55,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820796221] [2024-11-10 22:28:55,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:55,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:28:55,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:55,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:28:55,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:28:55,654 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 81 [2024-11-10 22:28:55,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 162 transitions, 979 flow. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:55,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:55,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 81 [2024-11-10 22:28:55,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:00,002 INFO L124 PetriNetUnfolderBase]: 25173/44733 cut-off events. [2024-11-10 22:29:00,002 INFO L125 PetriNetUnfolderBase]: For 77879/79777 co-relation queries the response was YES. [2024-11-10 22:29:00,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130514 conditions, 44733 events. 25173/44733 cut-off events. For 77879/79777 co-relation queries the response was YES. Maximal size of possible extension queue 914. Compared 383210 event pairs, 7368 based on Foata normal form. 1225/44220 useless extension candidates. Maximal degree in co-relation 130423. Up to 15990 conditions per place. [2024-11-10 22:29:00,614 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 165 selfloop transitions, 10 changer transitions 0/222 dead transitions. [2024-11-10 22:29:00,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 222 transitions, 1661 flow [2024-11-10 22:29:00,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:29:00,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:29:00,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 210 transitions. [2024-11-10 22:29:00,615 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6481481481481481 [2024-11-10 22:29:00,615 INFO L175 Difference]: Start difference. First operand has 150 places, 162 transitions, 979 flow. Second operand 4 states and 210 transitions. [2024-11-10 22:29:00,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 222 transitions, 1661 flow [2024-11-10 22:29:00,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 222 transitions, 1612 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-11-10 22:29:00,940 INFO L231 Difference]: Finished difference. Result has 149 places, 162 transitions, 987 flow [2024-11-10 22:29:00,941 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=954, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=987, PETRI_PLACES=149, PETRI_TRANSITIONS=162} [2024-11-10 22:29:00,941 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 76 predicate places. [2024-11-10 22:29:00,941 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 162 transitions, 987 flow [2024-11-10 22:29:00,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:00,941 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:00,941 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2024-11-10 22:29:00,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-10 22:29:00,942 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-10 22:29:00,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:00,942 INFO L85 PathProgramCache]: Analyzing trace with hash 988947135, now seen corresponding path program 1 times [2024-11-10 22:29:00,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:00,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661926778] [2024-11-10 22:29:00,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:00,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:01,034 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 22:29:01,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:01,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661926778] [2024-11-10 22:29:01,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661926778] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:29:01,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138449433] [2024-11-10 22:29:01,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:01,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:29:01,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:29:01,037 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) [2024-11-10 22:29:01,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-10 22:29:01,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:01,143 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 22:29:01,145 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:29:01,288 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:29:01,288 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:29:01,431 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:29:01,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138449433] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:29:01,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:29:01,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-11-10 22:29:01,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231286786] [2024-11-10 22:29:01,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:29:01,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-10 22:29:01,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:01,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-10 22:29:01,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-10 22:29:01,690 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 81 [2024-11-10 22:29:01,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 162 transitions, 987 flow. Second operand has 19 states, 19 states have (on average 29.63157894736842) internal successors, (563), 19 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:01,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:01,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 81 [2024-11-10 22:29:01,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:07,297 INFO L124 PetriNetUnfolderBase]: 32862/50587 cut-off events. [2024-11-10 22:29:07,298 INFO L125 PetriNetUnfolderBase]: For 132386/133301 co-relation queries the response was YES. [2024-11-10 22:29:07,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165309 conditions, 50587 events. 32862/50587 cut-off events. For 132386/133301 co-relation queries the response was YES. Maximal size of possible extension queue 1004. Compared 374788 event pairs, 3186 based on Foata normal form. 564/46739 useless extension candidates. Maximal degree in co-relation 165217. Up to 9508 conditions per place. [2024-11-10 22:29:07,769 INFO L140 encePairwiseOnDemand]: 62/81 looper letters, 334 selfloop transitions, 73 changer transitions 14/446 dead transitions. [2024-11-10 22:29:07,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 446 transitions, 3609 flow [2024-11-10 22:29:07,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-10 22:29:07,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-10 22:29:07,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 700 transitions. [2024-11-10 22:29:07,772 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4548408057179987 [2024-11-10 22:29:07,772 INFO L175 Difference]: Start difference. First operand has 149 places, 162 transitions, 987 flow. Second operand 19 states and 700 transitions. [2024-11-10 22:29:07,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 446 transitions, 3609 flow [2024-11-10 22:29:08,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 446 transitions, 3504 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-11-10 22:29:08,012 INFO L231 Difference]: Finished difference. Result has 165 places, 167 transitions, 1139 flow [2024-11-10 22:29:08,012 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=968, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1139, PETRI_PLACES=165, PETRI_TRANSITIONS=167} [2024-11-10 22:29:08,013 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 92 predicate places. [2024-11-10 22:29:08,013 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 167 transitions, 1139 flow [2024-11-10 22:29:08,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 29.63157894736842) internal successors, (563), 19 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:08,013 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:08,014 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:08,026 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-10 22:29:08,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:29:08,215 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-10 22:29:08,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:08,216 INFO L85 PathProgramCache]: Analyzing trace with hash -144516423, now seen corresponding path program 2 times [2024-11-10 22:29:08,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:08,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338250578] [2024-11-10 22:29:08,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:08,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:08,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:08,290 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-10 22:29:08,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:08,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338250578] [2024-11-10 22:29:08,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338250578] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:29:08,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960930096] [2024-11-10 22:29:08,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:29:08,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:29:08,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:29:08,293 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) [2024-11-10 22:29:08,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-10 22:29:08,395 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 22:29:08,395 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:29:08,396 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 22:29:08,397 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:29:08,449 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-10 22:29:08,450 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:29:08,508 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-10 22:29:08,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960930096] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:29:08,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:29:08,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-10 22:29:08,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597898602] [2024-11-10 22:29:08,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:29:08,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:29:08,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:08,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:29:08,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:29:08,522 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 81 [2024-11-10 22:29:08,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 167 transitions, 1139 flow. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:08,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:08,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 81 [2024-11-10 22:29:08,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:29:14,417 INFO L124 PetriNetUnfolderBase]: 31334/57526 cut-off events. [2024-11-10 22:29:14,417 INFO L125 PetriNetUnfolderBase]: For 91245/92062 co-relation queries the response was YES. [2024-11-10 22:29:14,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162631 conditions, 57526 events. 31334/57526 cut-off events. For 91245/92062 co-relation queries the response was YES. Maximal size of possible extension queue 1140. Compared 517253 event pairs, 11215 based on Foata normal form. 643/54087 useless extension candidates. Maximal degree in co-relation 162530. Up to 21406 conditions per place. [2024-11-10 22:29:14,846 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 121 selfloop transitions, 7 changer transitions 33/200 dead transitions. [2024-11-10 22:29:14,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 200 transitions, 1604 flow [2024-11-10 22:29:14,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:29:14,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:29:14,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 202 transitions. [2024-11-10 22:29:14,847 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6234567901234568 [2024-11-10 22:29:14,847 INFO L175 Difference]: Start difference. First operand has 165 places, 167 transitions, 1139 flow. Second operand 4 states and 202 transitions. [2024-11-10 22:29:14,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 200 transitions, 1604 flow [2024-11-10 22:29:15,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 200 transitions, 1491 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-11-10 22:29:15,106 INFO L231 Difference]: Finished difference. Result has 156 places, 140 transitions, 889 flow [2024-11-10 22:29:15,106 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1024, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=889, PETRI_PLACES=156, PETRI_TRANSITIONS=140} [2024-11-10 22:29:15,107 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 83 predicate places. [2024-11-10 22:29:15,107 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 140 transitions, 889 flow [2024-11-10 22:29:15,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:15,107 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:29:15,107 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:29:15,120 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-10 22:29:15,307 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,SelfDestructingSolverStorable20 [2024-11-10 22:29:15,308 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-10 22:29:15,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:29:15,308 INFO L85 PathProgramCache]: Analyzing trace with hash 659710998, now seen corresponding path program 2 times [2024-11-10 22:29:15,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:29:15,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972636760] [2024-11-10 22:29:15,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:29:15,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:29:15,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:29:15,483 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-10 22:29:15,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:29:15,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972636760] [2024-11-10 22:29:15,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972636760] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:29:15,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008457787] [2024-11-10 22:29:15,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:29:15,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:29:15,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:29:15,486 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) [2024-11-10 22:29:15,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-10 22:29:15,589 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 22:29:15,590 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:29:15,591 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:29:15,594 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:29:15,674 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-10 22:29:15,674 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:29:15,742 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-10 22:29:15,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008457787] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:29:15,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:29:15,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 2, 2] total 9 [2024-11-10 22:29:15,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37503081] [2024-11-10 22:29:15,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:29:15,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 22:29:15,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:29:15,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 22:29:15,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-10 22:29:15,894 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 81 [2024-11-10 22:29:15,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 140 transitions, 889 flow. Second operand has 11 states, 11 states have (on average 32.63636363636363) internal successors, (359), 11 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:29:15,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:29:15,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 81 [2024-11-10 22:29:15,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand