./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3289d67d 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-simple-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 0c7c5c48eda3eba87519854c38b7495ee97c35417d2a6e287791b53fe49d6c07 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 07:57:15,872 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 07:57:15,967 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 07:57:15,972 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 07:57:15,972 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 07:57:15,990 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 07:57:15,990 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 07:57:15,991 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 07:57:15,991 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 07:57:15,992 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 07:57:15,992 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 07:57:15,992 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 07:57:15,993 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 07:57:15,994 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 07:57:15,994 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 07:57:15,995 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 07:57:15,995 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 07:57:15,995 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 07:57:15,995 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 07:57:15,996 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 07:57:15,996 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 07:57:15,999 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 07:57:15,999 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 07:57:16,000 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 07:57:16,000 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 07:57:16,000 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 07:57:16,000 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 07:57:16,001 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 07:57:16,001 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 07:57:16,001 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 07:57:16,001 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 07:57:16,001 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 07:57:16,002 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 07:57:16,002 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 07:57:16,002 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:57:16,002 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 07:57:16,003 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 07:57:16,003 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 07:57:16,003 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 07:57:16,006 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 07:57:16,006 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 07:57:16,007 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 07:57:16,007 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 07:57:16,008 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 07:57:16,008 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c7c5c48eda3eba87519854c38b7495ee97c35417d2a6e287791b53fe49d6c07 [2024-11-17 07:57:16,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 07:57:16,271 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 07:57:16,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 07:57:16,274 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 07:57:16,275 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 07:57:16,276 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2024-11-17 07:57:17,645 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 07:57:17,843 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 07:57:17,843 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2024-11-17 07:57:17,850 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e82d6fc8/11e6a13e83664583af95ec5442b3d4d3/FLAG45554471e [2024-11-17 07:57:17,861 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e82d6fc8/11e6a13e83664583af95ec5442b3d4d3 [2024-11-17 07:57:17,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 07:57:17,865 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 07:57:17,866 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 07:57:17,867 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 07:57:17,871 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 07:57:17,872 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:57:17" (1/1) ... [2024-11-17 07:57:17,873 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e5cb9fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:17, skipping insertion in model container [2024-11-17 07:57:17,873 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:57:17" (1/1) ... [2024-11-17 07:57:17,896 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 07:57:18,109 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:57:18,121 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 07:57:18,163 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:57:18,201 INFO L204 MainTranslator]: Completed translation [2024-11-17 07:57:18,202 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:18 WrapperNode [2024-11-17 07:57:18,202 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 07:57:18,203 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 07:57:18,204 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 07:57:18,204 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 07:57:18,210 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:18" (1/1) ... [2024-11-17 07:57:18,216 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:18" (1/1) ... [2024-11-17 07:57:18,242 INFO L138 Inliner]: procedures = 23, calls = 21, calls flagged for inlining = 8, calls inlined = 10, statements flattened = 113 [2024-11-17 07:57:18,243 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 07:57:18,243 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 07:57:18,244 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 07:57:18,244 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 07:57:18,252 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:18" (1/1) ... [2024-11-17 07:57:18,253 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:18" (1/1) ... [2024-11-17 07:57:18,255 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:18" (1/1) ... [2024-11-17 07:57:18,271 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-17 07:57:18,271 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:18" (1/1) ... [2024-11-17 07:57:18,271 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:18" (1/1) ... [2024-11-17 07:57:18,278 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:18" (1/1) ... [2024-11-17 07:57:18,279 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:18" (1/1) ... [2024-11-17 07:57:18,280 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:18" (1/1) ... [2024-11-17 07:57:18,281 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:18" (1/1) ... [2024-11-17 07:57:18,284 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 07:57:18,285 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 07:57:18,285 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 07:57:18,285 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 07:57:18,286 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:18" (1/1) ... [2024-11-17 07:57:18,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:57:18,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:18,317 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) [2024-11-17 07:57:18,324 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 [2024-11-17 07:57:18,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 07:57:18,374 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-17 07:57:18,374 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-17 07:57:18,375 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-17 07:57:18,375 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-17 07:57:18,375 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-17 07:57:18,375 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-17 07:57:18,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 07:57:18,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 07:57:18,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 07:57:18,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 07:57:18,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-17 07:57:18,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 07:57:18,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 07:57:18,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 07:57:18,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 07:57:18,379 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 07:57:18,477 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 07:57:18,480 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 07:57:18,738 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 07:57:18,738 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 07:57:18,924 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 07:57:18,925 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 07:57:18,926 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:57:18 BoogieIcfgContainer [2024-11-17 07:57:18,926 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 07:57:18,929 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 07:57:18,930 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 07:57:18,933 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 07:57:18,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:57:17" (1/3) ... [2024-11-17 07:57:18,935 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47767a20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:57:18, skipping insertion in model container [2024-11-17 07:57:18,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:57:18" (2/3) ... [2024-11-17 07:57:18,935 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47767a20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:57:18, skipping insertion in model container [2024-11-17 07:57:18,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:57:18" (3/3) ... [2024-11-17 07:57:18,938 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2024-11-17 07:57:18,954 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 07:57:18,955 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-17 07:57:18,955 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 07:57:19,028 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-17 07:57:19,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 74 transitions, 169 flow [2024-11-17 07:57:19,110 INFO L124 PetriNetUnfolderBase]: 11/71 cut-off events. [2024-11-17 07:57:19,110 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-17 07:57:19,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 71 events. 11/71 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 167 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 54. Up to 3 conditions per place. [2024-11-17 07:57:19,114 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 74 transitions, 169 flow [2024-11-17 07:57:19,118 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 69 transitions, 153 flow [2024-11-17 07:57:19,127 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:57:19,133 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;@3fea033f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:57:19,134 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-11-17 07:57:19,138 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:57:19,138 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2024-11-17 07:57:19,139 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:57:19,139 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:19,139 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 07:57:19,140 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-17 07:57:19,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:19,149 INFO L85 PathProgramCache]: Analyzing trace with hash 14205099, now seen corresponding path program 1 times [2024-11-17 07:57:19,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:19,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114417120] [2024-11-17 07:57:19,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:19,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:19,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:19,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:19,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:19,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114417120] [2024-11-17 07:57:19,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114417120] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:19,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:57:19,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:57:19,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404006348] [2024-11-17 07:57:19,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:19,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:57:19,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:19,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:57:19,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:57:19,539 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 74 [2024-11-17 07:57:19,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 69 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 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) [2024-11-17 07:57:19,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:19,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 74 [2024-11-17 07:57:19,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:19,954 INFO L124 PetriNetUnfolderBase]: 1153/2327 cut-off events. [2024-11-17 07:57:19,955 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2024-11-17 07:57:19,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4044 conditions, 2327 events. 1153/2327 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 15829 event pairs, 880 based on Foata normal form. 235/2244 useless extension candidates. Maximal degree in co-relation 3689. Up to 1594 conditions per place. [2024-11-17 07:57:19,978 INFO L140 encePairwiseOnDemand]: 58/74 looper letters, 35 selfloop transitions, 7 changer transitions 0/70 dead transitions. [2024-11-17 07:57:19,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 70 transitions, 239 flow [2024-11-17 07:57:19,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:57:19,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:57:19,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 177 transitions. [2024-11-17 07:57:19,991 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.597972972972973 [2024-11-17 07:57:19,993 INFO L175 Difference]: Start difference. First operand has 68 places, 69 transitions, 153 flow. Second operand 4 states and 177 transitions. [2024-11-17 07:57:19,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 70 transitions, 239 flow [2024-11-17 07:57:19,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 70 transitions, 230 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-17 07:57:20,004 INFO L231 Difference]: Finished difference. Result has 69 places, 70 transitions, 194 flow [2024-11-17 07:57:20,007 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=69, PETRI_TRANSITIONS=70} [2024-11-17 07:57:20,011 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 1 predicate places. [2024-11-17 07:57:20,011 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 70 transitions, 194 flow [2024-11-17 07:57:20,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 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) [2024-11-17 07:57:20,012 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:20,012 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-17 07:57:20,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 07:57:20,013 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-17 07:57:20,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:20,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1888814250, now seen corresponding path program 1 times [2024-11-17 07:57:20,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:20,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522836040] [2024-11-17 07:57:20,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:20,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:20,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:20,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:20,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:20,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522836040] [2024-11-17 07:57:20,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522836040] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:20,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402678054] [2024-11-17 07:57:20,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:20,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:20,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:20,184 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) [2024-11-17 07:57:20,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 07:57:20,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:20,265 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:57:20,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:20,336 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:20,337 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:57:20,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402678054] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:20,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:57:20,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-17 07:57:20,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497380737] [2024-11-17 07:57:20,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:20,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:57:20,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:20,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:57:20,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:57:20,373 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 74 [2024-11-17 07:57:20,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 70 transitions, 194 flow. Second operand has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 6 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) [2024-11-17 07:57:20,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:20,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 74 [2024-11-17 07:57:20,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:20,672 INFO L124 PetriNetUnfolderBase]: 1153/2325 cut-off events. [2024-11-17 07:57:20,672 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-11-17 07:57:20,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4014 conditions, 2325 events. 1153/2325 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 15803 event pairs, 880 based on Foata normal form. 2/2009 useless extension candidates. Maximal degree in co-relation 3960. Up to 1584 conditions per place. [2024-11-17 07:57:20,688 INFO L140 encePairwiseOnDemand]: 65/74 looper letters, 28 selfloop transitions, 12 changer transitions 0/68 dead transitions. [2024-11-17 07:57:20,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 68 transitions, 266 flow [2024-11-17 07:57:20,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:57:20,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:57:20,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 228 transitions. [2024-11-17 07:57:20,694 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-11-17 07:57:20,694 INFO L175 Difference]: Start difference. First operand has 69 places, 70 transitions, 194 flow. Second operand 6 states and 228 transitions. [2024-11-17 07:57:20,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 68 transitions, 266 flow [2024-11-17 07:57:20,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 68 transitions, 266 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:57:20,698 INFO L231 Difference]: Finished difference. Result has 72 places, 68 transitions, 210 flow [2024-11-17 07:57:20,698 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=210, PETRI_PLACES=72, PETRI_TRANSITIONS=68} [2024-11-17 07:57:20,699 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 4 predicate places. [2024-11-17 07:57:20,699 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 68 transitions, 210 flow [2024-11-17 07:57:20,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 6 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) [2024-11-17 07:57:20,699 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:20,700 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-17 07:57:20,718 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 07:57:20,900 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 [2024-11-17 07:57:20,901 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-17 07:57:20,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:20,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1576300016, now seen corresponding path program 1 times [2024-11-17 07:57:20,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:20,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820111203] [2024-11-17 07:57:20,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:20,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:20,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:21,020 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:21,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:21,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820111203] [2024-11-17 07:57:21,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820111203] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:21,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38990367] [2024-11-17 07:57:21,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:21,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:21,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:21,023 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) [2024-11-17 07:57:21,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 07:57:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:21,094 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:57:21,095 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:21,130 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:21,130 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:21,178 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:21,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38990367] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:21,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:21,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-17 07:57:21,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017958752] [2024-11-17 07:57:21,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:21,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 07:57:21,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:21,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 07:57:21,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-17 07:57:21,231 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 74 [2024-11-17 07:57:21,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 68 transitions, 210 flow. Second operand has 12 states, 12 states have (on average 32.083333333333336) internal successors, (385), 12 states have internal predecessors, (385), 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) [2024-11-17 07:57:21,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:21,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 74 [2024-11-17 07:57:21,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:21,582 INFO L124 PetriNetUnfolderBase]: 1159/2361 cut-off events. [2024-11-17 07:57:21,582 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-11-17 07:57:21,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4120 conditions, 2361 events. 1159/2361 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 16194 event pairs, 880 based on Foata normal form. 6/2051 useless extension candidates. Maximal degree in co-relation 3962. Up to 1595 conditions per place. [2024-11-17 07:57:21,595 INFO L140 encePairwiseOnDemand]: 65/74 looper letters, 33 selfloop transitions, 25 changer transitions 0/86 dead transitions. [2024-11-17 07:57:21,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 86 transitions, 440 flow [2024-11-17 07:57:21,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 07:57:21,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 07:57:21,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 374 transitions. [2024-11-17 07:57:21,597 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5054054054054054 [2024-11-17 07:57:21,598 INFO L175 Difference]: Start difference. First operand has 72 places, 68 transitions, 210 flow. Second operand 10 states and 374 transitions. [2024-11-17 07:57:21,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 86 transitions, 440 flow [2024-11-17 07:57:21,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 86 transitions, 382 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-17 07:57:21,602 INFO L231 Difference]: Finished difference. Result has 79 places, 86 transitions, 350 flow [2024-11-17 07:57:21,602 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=350, PETRI_PLACES=79, PETRI_TRANSITIONS=86} [2024-11-17 07:57:21,603 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 11 predicate places. [2024-11-17 07:57:21,603 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 86 transitions, 350 flow [2024-11-17 07:57:21,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 32.083333333333336) internal successors, (385), 12 states have internal predecessors, (385), 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) [2024-11-17 07:57:21,604 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:21,604 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:21,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-17 07:57:21,804 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 [2024-11-17 07:57:21,805 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-17 07:57:21,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:21,806 INFO L85 PathProgramCache]: Analyzing trace with hash -882723301, now seen corresponding path program 1 times [2024-11-17 07:57:21,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:21,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815241628] [2024-11-17 07:57:21,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:21,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:21,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:21,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:21,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:21,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815241628] [2024-11-17 07:57:21,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815241628] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:21,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:57:21,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:57:21,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390419758] [2024-11-17 07:57:21,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:21,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:57:21,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:21,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:57:21,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:57:21,891 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 74 [2024-11-17 07:57:21,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 86 transitions, 350 flow. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2024-11-17 07:57:21,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:21,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 74 [2024-11-17 07:57:21,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:22,334 INFO L124 PetriNetUnfolderBase]: 2267/4229 cut-off events. [2024-11-17 07:57:22,334 INFO L125 PetriNetUnfolderBase]: For 191/191 co-relation queries the response was YES. [2024-11-17 07:57:22,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7610 conditions, 4229 events. 2267/4229 cut-off events. For 191/191 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 29331 event pairs, 1240 based on Foata normal form. 86/3805 useless extension candidates. Maximal degree in co-relation 7539. Up to 2283 conditions per place. [2024-11-17 07:57:22,366 INFO L140 encePairwiseOnDemand]: 68/74 looper letters, 92 selfloop transitions, 4 changer transitions 0/124 dead transitions. [2024-11-17 07:57:22,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 124 transitions, 624 flow [2024-11-17 07:57:22,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:57:22,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:57:22,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 206 transitions. [2024-11-17 07:57:22,368 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6959459459459459 [2024-11-17 07:57:22,369 INFO L175 Difference]: Start difference. First operand has 79 places, 86 transitions, 350 flow. Second operand 4 states and 206 transitions. [2024-11-17 07:57:22,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 124 transitions, 624 flow [2024-11-17 07:57:22,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 124 transitions, 600 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-17 07:57:22,374 INFO L231 Difference]: Finished difference. Result has 82 places, 89 transitions, 355 flow [2024-11-17 07:57:22,374 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=355, PETRI_PLACES=82, PETRI_TRANSITIONS=89} [2024-11-17 07:57:22,375 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 14 predicate places. [2024-11-17 07:57:22,375 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 89 transitions, 355 flow [2024-11-17 07:57:22,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2024-11-17 07:57:22,375 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:22,376 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:22,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 07:57:22,376 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-17 07:57:22,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:22,377 INFO L85 PathProgramCache]: Analyzing trace with hash -235762647, now seen corresponding path program 1 times [2024-11-17 07:57:22,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:22,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126027171] [2024-11-17 07:57:22,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:22,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:22,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:22,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:22,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:22,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126027171] [2024-11-17 07:57:22,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126027171] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:22,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:57:22,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:57:22,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089432847] [2024-11-17 07:57:22,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:22,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:57:22,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:22,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:57:22,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:57:22,466 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 74 [2024-11-17 07:57:22,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 89 transitions, 355 flow. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2024-11-17 07:57:22,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:22,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 74 [2024-11-17 07:57:22,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:23,183 INFO L124 PetriNetUnfolderBase]: 4381/7611 cut-off events. [2024-11-17 07:57:23,186 INFO L125 PetriNetUnfolderBase]: For 2366/2622 co-relation queries the response was YES. [2024-11-17 07:57:23,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16026 conditions, 7611 events. 4381/7611 cut-off events. For 2366/2622 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 51905 event pairs, 2041 based on Foata normal form. 118/7096 useless extension candidates. Maximal degree in co-relation 15955. Up to 3941 conditions per place. [2024-11-17 07:57:23,245 INFO L140 encePairwiseOnDemand]: 68/74 looper letters, 100 selfloop transitions, 4 changer transitions 0/131 dead transitions. [2024-11-17 07:57:23,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 131 transitions, 691 flow [2024-11-17 07:57:23,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:57:23,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:57:23,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 201 transitions. [2024-11-17 07:57:23,247 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6790540540540541 [2024-11-17 07:57:23,247 INFO L175 Difference]: Start difference. First operand has 82 places, 89 transitions, 355 flow. Second operand 4 states and 201 transitions. [2024-11-17 07:57:23,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 131 transitions, 691 flow [2024-11-17 07:57:23,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 131 transitions, 682 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:57:23,252 INFO L231 Difference]: Finished difference. Result has 86 places, 92 transitions, 381 flow [2024-11-17 07:57:23,253 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=381, PETRI_PLACES=86, PETRI_TRANSITIONS=92} [2024-11-17 07:57:23,255 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 18 predicate places. [2024-11-17 07:57:23,255 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 92 transitions, 381 flow [2024-11-17 07:57:23,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2024-11-17 07:57:23,256 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:23,256 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:23,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 07:57:23,256 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-17 07:57:23,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:23,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1675122484, now seen corresponding path program 1 times [2024-11-17 07:57:23,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:23,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927641356] [2024-11-17 07:57:23,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:23,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:23,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:23,349 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 07:57:23,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:23,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927641356] [2024-11-17 07:57:23,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927641356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:23,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:57:23,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 07:57:23,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356393066] [2024-11-17 07:57:23,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:23,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:57:23,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:23,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:57:23,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:57:23,378 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 74 [2024-11-17 07:57:23,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 92 transitions, 381 flow. Second operand has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 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) [2024-11-17 07:57:23,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:23,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 74 [2024-11-17 07:57:23,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:24,453 INFO L124 PetriNetUnfolderBase]: 4991/10097 cut-off events. [2024-11-17 07:57:24,453 INFO L125 PetriNetUnfolderBase]: For 3206/3242 co-relation queries the response was YES. [2024-11-17 07:57:24,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20942 conditions, 10097 events. 4991/10097 cut-off events. For 3206/3242 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 82071 event pairs, 3632 based on Foata normal form. 170/9399 useless extension candidates. Maximal degree in co-relation 20867. Up to 5352 conditions per place. [2024-11-17 07:57:24,526 INFO L140 encePairwiseOnDemand]: 63/74 looper letters, 98 selfloop transitions, 12 changer transitions 0/138 dead transitions. [2024-11-17 07:57:24,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 138 transitions, 732 flow [2024-11-17 07:57:24,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:57:24,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:57:24,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 277 transitions. [2024-11-17 07:57:24,528 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6238738738738738 [2024-11-17 07:57:24,528 INFO L175 Difference]: Start difference. First operand has 86 places, 92 transitions, 381 flow. Second operand 6 states and 277 transitions. [2024-11-17 07:57:24,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 138 transitions, 732 flow [2024-11-17 07:57:24,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 138 transitions, 723 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:57:24,537 INFO L231 Difference]: Finished difference. Result has 94 places, 96 transitions, 443 flow [2024-11-17 07:57:24,537 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=443, PETRI_PLACES=94, PETRI_TRANSITIONS=96} [2024-11-17 07:57:24,538 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 26 predicate places. [2024-11-17 07:57:24,538 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 96 transitions, 443 flow [2024-11-17 07:57:24,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 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) [2024-11-17 07:57:24,539 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:24,539 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] [2024-11-17 07:57:24,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 07:57:24,540 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-17 07:57:24,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:24,540 INFO L85 PathProgramCache]: Analyzing trace with hash 148160343, now seen corresponding path program 1 times [2024-11-17 07:57:24,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:24,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792948784] [2024-11-17 07:57:24,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:24,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:24,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:24,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:24,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:24,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792948784] [2024-11-17 07:57:24,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792948784] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:24,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:57:24,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:57:24,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379293171] [2024-11-17 07:57:24,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:24,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:57:24,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:24,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:57:24,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:57:24,608 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 74 [2024-11-17 07:57:24,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 96 transitions, 443 flow. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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) [2024-11-17 07:57:24,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:24,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 74 [2024-11-17 07:57:24,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:25,446 INFO L124 PetriNetUnfolderBase]: 3900/7838 cut-off events. [2024-11-17 07:57:25,446 INFO L125 PetriNetUnfolderBase]: For 4498/4908 co-relation queries the response was YES. [2024-11-17 07:57:25,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17326 conditions, 7838 events. 3900/7838 cut-off events. For 4498/4908 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 60717 event pairs, 817 based on Foata normal form. 218/7645 useless extension candidates. Maximal degree in co-relation 17246. Up to 4005 conditions per place. [2024-11-17 07:57:25,492 INFO L140 encePairwiseOnDemand]: 70/74 looper letters, 96 selfloop transitions, 4 changer transitions 2/134 dead transitions. [2024-11-17 07:57:25,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 134 transitions, 797 flow [2024-11-17 07:57:25,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:57:25,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:57:25,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 199 transitions. [2024-11-17 07:57:25,494 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6722972972972973 [2024-11-17 07:57:25,495 INFO L175 Difference]: Start difference. First operand has 94 places, 96 transitions, 443 flow. Second operand 4 states and 199 transitions. [2024-11-17 07:57:25,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 134 transitions, 797 flow [2024-11-17 07:57:25,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 134 transitions, 790 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:57:25,502 INFO L231 Difference]: Finished difference. Result has 98 places, 99 transitions, 461 flow [2024-11-17 07:57:25,502 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=461, PETRI_PLACES=98, PETRI_TRANSITIONS=99} [2024-11-17 07:57:25,504 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 30 predicate places. [2024-11-17 07:57:25,504 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 99 transitions, 461 flow [2024-11-17 07:57:25,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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) [2024-11-17 07:57:25,505 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:25,505 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-17 07:57:25,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 07:57:25,506 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-17 07:57:25,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:25,506 INFO L85 PathProgramCache]: Analyzing trace with hash -895470925, now seen corresponding path program 2 times [2024-11-17 07:57:25,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:25,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821327510] [2024-11-17 07:57:25,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:25,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:25,659 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:25,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:25,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821327510] [2024-11-17 07:57:25,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821327510] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:25,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454291092] [2024-11-17 07:57:25,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:57:25,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:25,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:25,664 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) [2024-11-17 07:57:25,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 07:57:25,724 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 07:57:25,724 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:57:25,725 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 07:57:25,726 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:25,786 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 07:57:25,787 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:25,828 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 07:57:25,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454291092] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:25,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:25,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-17 07:57:25,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342742988] [2024-11-17 07:57:25,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:25,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-17 07:57:25,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:25,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-17 07:57:25,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-17 07:57:25,862 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 74 [2024-11-17 07:57:25,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 99 transitions, 461 flow. Second operand has 14 states, 14 states have (on average 30.142857142857142) internal successors, (422), 14 states have internal predecessors, (422), 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) [2024-11-17 07:57:25,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:25,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 74 [2024-11-17 07:57:25,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:26,672 INFO L124 PetriNetUnfolderBase]: 3456/6923 cut-off events. [2024-11-17 07:57:26,673 INFO L125 PetriNetUnfolderBase]: For 4569/4970 co-relation queries the response was YES. [2024-11-17 07:57:26,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16324 conditions, 6923 events. 3456/6923 cut-off events. For 4569/4970 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 52626 event pairs, 2703 based on Foata normal form. 126/6737 useless extension candidates. Maximal degree in co-relation 16208. Up to 4931 conditions per place. [2024-11-17 07:57:26,722 INFO L140 encePairwiseOnDemand]: 64/74 looper letters, 46 selfloop transitions, 40 changer transitions 0/113 dead transitions. [2024-11-17 07:57:26,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 113 transitions, 700 flow [2024-11-17 07:57:26,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-17 07:57:26,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-17 07:57:26,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 774 transitions. [2024-11-17 07:57:26,725 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4358108108108108 [2024-11-17 07:57:26,725 INFO L175 Difference]: Start difference. First operand has 98 places, 99 transitions, 461 flow. Second operand 24 states and 774 transitions. [2024-11-17 07:57:26,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 113 transitions, 700 flow [2024-11-17 07:57:26,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 113 transitions, 700 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:57:26,743 INFO L231 Difference]: Finished difference. Result has 123 places, 109 transitions, 612 flow [2024-11-17 07:57:26,743 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=612, PETRI_PLACES=123, PETRI_TRANSITIONS=109} [2024-11-17 07:57:26,744 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 55 predicate places. [2024-11-17 07:57:26,744 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 109 transitions, 612 flow [2024-11-17 07:57:26,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 30.142857142857142) internal successors, (422), 14 states have internal predecessors, (422), 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) [2024-11-17 07:57:26,745 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:26,745 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, 1, 1, 1, 1] [2024-11-17 07:57:26,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-17 07:57:26,945 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 [2024-11-17 07:57:26,947 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-17 07:57:26,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:26,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1734270349, now seen corresponding path program 1 times [2024-11-17 07:57:26,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:26,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723005296] [2024-11-17 07:57:26,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:26,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:27,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:27,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:27,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723005296] [2024-11-17 07:57:27,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723005296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:27,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:57:27,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 07:57:27,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954739169] [2024-11-17 07:57:27,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:27,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:57:27,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:27,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:57:27,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:57:27,061 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 74 [2024-11-17 07:57:27,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 109 transitions, 612 flow. Second operand has 5 states, 5 states have (on average 37.4) internal successors, (187), 5 states have internal predecessors, (187), 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) [2024-11-17 07:57:27,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:27,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 74 [2024-11-17 07:57:27,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:28,218 INFO L124 PetriNetUnfolderBase]: 5048/10415 cut-off events. [2024-11-17 07:57:28,218 INFO L125 PetriNetUnfolderBase]: For 7032/7538 co-relation queries the response was YES. [2024-11-17 07:57:28,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24171 conditions, 10415 events. 5048/10415 cut-off events. For 7032/7538 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 87654 event pairs, 1699 based on Foata normal form. 386/10300 useless extension candidates. Maximal degree in co-relation 24109. Up to 4275 conditions per place. [2024-11-17 07:57:28,276 INFO L140 encePairwiseOnDemand]: 67/74 looper letters, 141 selfloop transitions, 11 changer transitions 0/188 dead transitions. [2024-11-17 07:57:28,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 188 transitions, 1232 flow [2024-11-17 07:57:28,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:57:28,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:57:28,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 300 transitions. [2024-11-17 07:57:28,278 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6756756756756757 [2024-11-17 07:57:28,278 INFO L175 Difference]: Start difference. First operand has 123 places, 109 transitions, 612 flow. Second operand 6 states and 300 transitions. [2024-11-17 07:57:28,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 188 transitions, 1232 flow [2024-11-17 07:57:28,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 188 transitions, 1148 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-11-17 07:57:28,300 INFO L231 Difference]: Finished difference. Result has 123 places, 117 transitions, 613 flow [2024-11-17 07:57:28,301 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=613, PETRI_PLACES=123, PETRI_TRANSITIONS=117} [2024-11-17 07:57:28,301 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 55 predicate places. [2024-11-17 07:57:28,301 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 117 transitions, 613 flow [2024-11-17 07:57:28,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.4) internal successors, (187), 5 states have internal predecessors, (187), 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) [2024-11-17 07:57:28,302 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:28,302 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, 1, 1, 1, 1] [2024-11-17 07:57:28,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-17 07:57:28,302 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-17 07:57:28,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:28,303 INFO L85 PathProgramCache]: Analyzing trace with hash -259145485, now seen corresponding path program 2 times [2024-11-17 07:57:28,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:28,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626763782] [2024-11-17 07:57:28,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:28,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:28,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:28,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:28,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:28,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626763782] [2024-11-17 07:57:28,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626763782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:28,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:57:28,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 07:57:28,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570189940] [2024-11-17 07:57:28,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:28,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:57:28,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:28,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:57:28,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:57:28,384 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 74 [2024-11-17 07:57:28,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 117 transitions, 613 flow. Second operand has 5 states, 5 states have (on average 37.4) internal successors, (187), 5 states have internal predecessors, (187), 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) [2024-11-17 07:57:28,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:28,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 74 [2024-11-17 07:57:28,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:29,657 INFO L124 PetriNetUnfolderBase]: 7408/14465 cut-off events. [2024-11-17 07:57:29,658 INFO L125 PetriNetUnfolderBase]: For 15668/17066 co-relation queries the response was YES. [2024-11-17 07:57:29,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36096 conditions, 14465 events. 7408/14465 cut-off events. For 15668/17066 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 120992 event pairs, 2757 based on Foata normal form. 480/13969 useless extension candidates. Maximal degree in co-relation 36033. Up to 4621 conditions per place. [2024-11-17 07:57:29,756 INFO L140 encePairwiseOnDemand]: 67/74 looper letters, 143 selfloop transitions, 11 changer transitions 0/190 dead transitions. [2024-11-17 07:57:29,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 190 transitions, 1238 flow [2024-11-17 07:57:29,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:57:29,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:57:29,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 293 transitions. [2024-11-17 07:57:29,758 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6599099099099099 [2024-11-17 07:57:29,758 INFO L175 Difference]: Start difference. First operand has 123 places, 117 transitions, 613 flow. Second operand 6 states and 293 transitions. [2024-11-17 07:57:29,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 190 transitions, 1238 flow [2024-11-17 07:57:29,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 190 transitions, 1227 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-17 07:57:29,796 INFO L231 Difference]: Finished difference. Result has 131 places, 122 transitions, 685 flow [2024-11-17 07:57:29,796 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=685, PETRI_PLACES=131, PETRI_TRANSITIONS=122} [2024-11-17 07:57:29,797 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 63 predicate places. [2024-11-17 07:57:29,797 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 122 transitions, 685 flow [2024-11-17 07:57:29,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.4) internal successors, (187), 5 states have internal predecessors, (187), 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) [2024-11-17 07:57:29,798 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:29,798 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, 1, 1, 1, 1] [2024-11-17 07:57:29,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-17 07:57:29,798 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-17 07:57:29,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:29,799 INFO L85 PathProgramCache]: Analyzing trace with hash -622884475, now seen corresponding path program 3 times [2024-11-17 07:57:29,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:29,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673295550] [2024-11-17 07:57:29,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:29,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:29,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:30,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:30,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:30,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673295550] [2024-11-17 07:57:30,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673295550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:30,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:57:30,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 07:57:30,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877440690] [2024-11-17 07:57:30,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:30,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:57:30,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:30,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:57:30,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:57:30,028 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 74 [2024-11-17 07:57:30,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 122 transitions, 685 flow. Second operand has 5 states, 5 states have (on average 37.4) internal successors, (187), 5 states have internal predecessors, (187), 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) [2024-11-17 07:57:30,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:30,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 74 [2024-11-17 07:57:30,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:31,461 INFO L124 PetriNetUnfolderBase]: 7634/14713 cut-off events. [2024-11-17 07:57:31,461 INFO L125 PetriNetUnfolderBase]: For 25180/26516 co-relation queries the response was YES. [2024-11-17 07:57:31,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38324 conditions, 14713 events. 7634/14713 cut-off events. For 25180/26516 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 117320 event pairs, 1650 based on Foata normal form. 290/14161 useless extension candidates. Maximal degree in co-relation 38257. Up to 5968 conditions per place. [2024-11-17 07:57:31,660 INFO L140 encePairwiseOnDemand]: 67/74 looper letters, 136 selfloop transitions, 18 changer transitions 0/190 dead transitions. [2024-11-17 07:57:31,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 190 transitions, 1283 flow [2024-11-17 07:57:31,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:57:31,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:57:31,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 296 transitions. [2024-11-17 07:57:31,662 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-17 07:57:31,662 INFO L175 Difference]: Start difference. First operand has 131 places, 122 transitions, 685 flow. Second operand 6 states and 296 transitions. [2024-11-17 07:57:31,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 190 transitions, 1283 flow [2024-11-17 07:57:31,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 190 transitions, 1262 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-17 07:57:31,699 INFO L231 Difference]: Finished difference. Result has 137 places, 124 transitions, 750 flow [2024-11-17 07:57:31,699 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=750, PETRI_PLACES=137, PETRI_TRANSITIONS=124} [2024-11-17 07:57:31,700 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 69 predicate places. [2024-11-17 07:57:31,700 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 124 transitions, 750 flow [2024-11-17 07:57:31,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.4) internal successors, (187), 5 states have internal predecessors, (187), 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) [2024-11-17 07:57:31,701 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:31,701 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] [2024-11-17 07:57:31,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-17 07:57:31,701 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-17 07:57:31,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:31,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1504573388, now seen corresponding path program 1 times [2024-11-17 07:57:31,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:31,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746048118] [2024-11-17 07:57:31,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:31,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:31,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:31,777 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 07:57:31,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:31,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746048118] [2024-11-17 07:57:31,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746048118] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:31,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072248433] [2024-11-17 07:57:31,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:31,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:31,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:31,780 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) [2024-11-17 07:57:31,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 07:57:31,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:31,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-17 07:57:31,857 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:32,012 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:57:32,012 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:32,167 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:57:32,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072248433] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:32,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:32,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-11-17 07:57:32,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467231211] [2024-11-17 07:57:32,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:32,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-17 07:57:32,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:32,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-17 07:57:32,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-17 07:57:32,501 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 74 [2024-11-17 07:57:32,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 124 transitions, 750 flow. Second operand has 19 states, 19 states have (on average 27.526315789473685) internal successors, (523), 19 states have internal predecessors, (523), 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) [2024-11-17 07:57:32,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:32,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 74 [2024-11-17 07:57:32,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:36,282 INFO L124 PetriNetUnfolderBase]: 16123/28438 cut-off events. [2024-11-17 07:57:36,282 INFO L125 PetriNetUnfolderBase]: For 52028/53523 co-relation queries the response was YES. [2024-11-17 07:57:36,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77733 conditions, 28438 events. 16123/28438 cut-off events. For 52028/53523 co-relation queries the response was YES. Maximal size of possible extension queue 599. Compared 229261 event pairs, 3523 based on Foata normal form. 776/27799 useless extension candidates. Maximal degree in co-relation 77634. Up to 3936 conditions per place. [2024-11-17 07:57:36,440 INFO L140 encePairwiseOnDemand]: 58/74 looper letters, 455 selfloop transitions, 53 changer transitions 0/531 dead transitions. [2024-11-17 07:57:36,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 531 transitions, 4752 flow [2024-11-17 07:57:36,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-17 07:57:36,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-17 07:57:36,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 729 transitions. [2024-11-17 07:57:36,443 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5184921763869133 [2024-11-17 07:57:36,444 INFO L175 Difference]: Start difference. First operand has 137 places, 124 transitions, 750 flow. Second operand 19 states and 729 transitions. [2024-11-17 07:57:36,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 531 transitions, 4752 flow [2024-11-17 07:57:36,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 531 transitions, 4343 flow, removed 89 selfloop flow, removed 4 redundant places. [2024-11-17 07:57:36,543 INFO L231 Difference]: Finished difference. Result has 155 places, 144 transitions, 1024 flow [2024-11-17 07:57:36,543 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1024, PETRI_PLACES=155, PETRI_TRANSITIONS=144} [2024-11-17 07:57:36,544 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 87 predicate places. [2024-11-17 07:57:36,544 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 144 transitions, 1024 flow [2024-11-17 07:57:36,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 27.526315789473685) internal successors, (523), 19 states have internal predecessors, (523), 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) [2024-11-17 07:57:36,545 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:36,545 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:36,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-17 07:57:36,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:36,749 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-17 07:57:36,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:36,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1103386030, now seen corresponding path program 1 times [2024-11-17 07:57:36,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:36,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719268420] [2024-11-17 07:57:36,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:36,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:36,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:36,878 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-17 07:57:36,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:36,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719268420] [2024-11-17 07:57:36,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719268420] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:57:36,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:57:36,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 07:57:36,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791131431] [2024-11-17 07:57:36,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:57:36,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:57:36,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:36,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:57:36,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:57:36,909 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 74 [2024-11-17 07:57:36,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 144 transitions, 1024 flow. Second operand has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 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) [2024-11-17 07:57:36,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:36,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 74 [2024-11-17 07:57:36,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:39,301 INFO L124 PetriNetUnfolderBase]: 11289/21444 cut-off events. [2024-11-17 07:57:39,301 INFO L125 PetriNetUnfolderBase]: For 38179/39816 co-relation queries the response was YES. [2024-11-17 07:57:39,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60038 conditions, 21444 events. 11289/21444 cut-off events. For 38179/39816 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 177547 event pairs, 8677 based on Foata normal form. 161/20759 useless extension candidates. Maximal degree in co-relation 59920. Up to 15595 conditions per place. [2024-11-17 07:57:39,424 INFO L140 encePairwiseOnDemand]: 64/74 looper letters, 98 selfloop transitions, 9 changer transitions 31/167 dead transitions. [2024-11-17 07:57:39,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 167 transitions, 1427 flow [2024-11-17 07:57:39,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:57:39,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:57:39,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 259 transitions. [2024-11-17 07:57:39,425 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-17 07:57:39,425 INFO L175 Difference]: Start difference. First operand has 155 places, 144 transitions, 1024 flow. Second operand 6 states and 259 transitions. [2024-11-17 07:57:39,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 167 transitions, 1427 flow [2024-11-17 07:57:39,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 167 transitions, 1389 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-11-17 07:57:39,510 INFO L231 Difference]: Finished difference. Result has 158 places, 136 transitions, 953 flow [2024-11-17 07:57:39,510 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=990, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=953, PETRI_PLACES=158, PETRI_TRANSITIONS=136} [2024-11-17 07:57:39,511 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 90 predicate places. [2024-11-17 07:57:39,511 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 136 transitions, 953 flow [2024-11-17 07:57:39,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 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) [2024-11-17 07:57:39,512 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:39,512 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:39,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-17 07:57:39,512 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-17 07:57:39,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:39,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1684144982, now seen corresponding path program 1 times [2024-11-17 07:57:39,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:39,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365531048] [2024-11-17 07:57:39,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:39,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:39,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:39,734 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 07:57:39,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:39,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365531048] [2024-11-17 07:57:39,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365531048] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:39,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842122040] [2024-11-17 07:57:39,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:39,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:39,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:39,737 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) [2024-11-17 07:57:39,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 07:57:39,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:39,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-17 07:57:39,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:39,919 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 07:57:39,920 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:40,028 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 07:57:40,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842122040] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:40,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:40,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-17 07:57:40,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851911615] [2024-11-17 07:57:40,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:40,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-17 07:57:40,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:40,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-17 07:57:40,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2024-11-17 07:57:40,218 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 74 [2024-11-17 07:57:40,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 136 transitions, 953 flow. Second operand has 22 states, 22 states have (on average 30.363636363636363) internal successors, (668), 22 states have internal predecessors, (668), 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) [2024-11-17 07:57:40,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:40,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 74 [2024-11-17 07:57:40,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:42,126 INFO L124 PetriNetUnfolderBase]: 9858/19445 cut-off events. [2024-11-17 07:57:42,126 INFO L125 PetriNetUnfolderBase]: For 27316/28951 co-relation queries the response was YES. [2024-11-17 07:57:42,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50278 conditions, 19445 events. 9858/19445 cut-off events. For 27316/28951 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 166959 event pairs, 7722 based on Foata normal form. 38/18369 useless extension candidates. Maximal degree in co-relation 50195. Up to 8364 conditions per place. [2024-11-17 07:57:42,264 INFO L140 encePairwiseOnDemand]: 65/74 looper letters, 95 selfloop transitions, 45 changer transitions 1/170 dead transitions. [2024-11-17 07:57:42,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 170 transitions, 1421 flow [2024-11-17 07:57:42,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-17 07:57:42,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-17 07:57:42,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 454 transitions. [2024-11-17 07:57:42,266 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47193347193347196 [2024-11-17 07:57:42,266 INFO L175 Difference]: Start difference. First operand has 158 places, 136 transitions, 953 flow. Second operand 13 states and 454 transitions. [2024-11-17 07:57:42,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 170 transitions, 1421 flow [2024-11-17 07:57:42,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 170 transitions, 1294 flow, removed 16 selfloop flow, removed 12 redundant places. [2024-11-17 07:57:42,318 INFO L231 Difference]: Finished difference. Result has 152 places, 128 transitions, 848 flow [2024-11-17 07:57:42,318 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=848, PETRI_PLACES=152, PETRI_TRANSITIONS=128} [2024-11-17 07:57:42,319 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 84 predicate places. [2024-11-17 07:57:42,319 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 128 transitions, 848 flow [2024-11-17 07:57:42,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 30.363636363636363) internal successors, (668), 22 states have internal predecessors, (668), 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) [2024-11-17 07:57:42,319 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:42,319 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 3, 2, 2, 2, 1, 1, 1, 1] [2024-11-17 07:57:42,332 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-17 07:57:42,520 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,SelfDestructingSolverStorable13 [2024-11-17 07:57:42,520 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-17 07:57:42,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:42,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1757174825, now seen corresponding path program 2 times [2024-11-17 07:57:42,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:42,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286011175] [2024-11-17 07:57:42,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:42,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:42,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:42,880 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 42 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:57:42,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:42,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286011175] [2024-11-17 07:57:42,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286011175] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:42,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990281924] [2024-11-17 07:57:42,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:57:42,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:42,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:42,883 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) [2024-11-17 07:57:42,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 07:57:42,953 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 07:57:42,953 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:57:42,954 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 07:57:42,955 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:43,041 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-17 07:57:43,041 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:43,307 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-17 07:57:43,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990281924] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:43,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:43,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 3, 3] total 21 [2024-11-17 07:57:43,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582416829] [2024-11-17 07:57:43,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:43,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-17 07:57:43,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:43,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-17 07:57:43,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2024-11-17 07:57:43,520 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 74 [2024-11-17 07:57:43,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 128 transitions, 848 flow. Second operand has 22 states, 22 states have (on average 30.272727272727273) internal successors, (666), 22 states have internal predecessors, (666), 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) [2024-11-17 07:57:43,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:43,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 74 [2024-11-17 07:57:43,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:46,988 INFO L124 PetriNetUnfolderBase]: 15843/31084 cut-off events. [2024-11-17 07:57:46,988 INFO L125 PetriNetUnfolderBase]: For 37285/39034 co-relation queries the response was YES. [2024-11-17 07:57:47,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78091 conditions, 31084 events. 15843/31084 cut-off events. For 37285/39034 co-relation queries the response was YES. Maximal size of possible extension queue 758. Compared 284625 event pairs, 12516 based on Foata normal form. 169/29215 useless extension candidates. Maximal degree in co-relation 78022. Up to 13882 conditions per place. [2024-11-17 07:57:47,178 INFO L140 encePairwiseOnDemand]: 64/74 looper letters, 102 selfloop transitions, 51 changer transitions 0/182 dead transitions. [2024-11-17 07:57:47,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 182 transitions, 1487 flow [2024-11-17 07:57:47,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-17 07:57:47,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-17 07:57:47,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 699 transitions. [2024-11-17 07:57:47,180 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4498069498069498 [2024-11-17 07:57:47,180 INFO L175 Difference]: Start difference. First operand has 152 places, 128 transitions, 848 flow. Second operand 21 states and 699 transitions. [2024-11-17 07:57:47,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 182 transitions, 1487 flow [2024-11-17 07:57:47,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 182 transitions, 1389 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-11-17 07:57:47,263 INFO L231 Difference]: Finished difference. Result has 159 places, 134 transitions, 911 flow [2024-11-17 07:57:47,264 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=911, PETRI_PLACES=159, PETRI_TRANSITIONS=134} [2024-11-17 07:57:47,264 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 91 predicate places. [2024-11-17 07:57:47,264 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 134 transitions, 911 flow [2024-11-17 07:57:47,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 30.272727272727273) internal successors, (666), 22 states have internal predecessors, (666), 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) [2024-11-17 07:57:47,265 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:47,265 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] [2024-11-17 07:57:47,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-17 07:57:47,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-17 07:57:47,466 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-17 07:57:47,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:47,466 INFO L85 PathProgramCache]: Analyzing trace with hash -585944342, now seen corresponding path program 1 times [2024-11-17 07:57:47,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:47,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703653677] [2024-11-17 07:57:47,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:47,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:47,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:47,554 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 07:57:47,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:47,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703653677] [2024-11-17 07:57:47,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703653677] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:47,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102701601] [2024-11-17 07:57:47,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:47,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:47,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:47,556 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) [2024-11-17 07:57:47,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-17 07:57:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:47,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-17 07:57:47,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:47,755 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:57:47,755 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:47,867 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:57:47,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102701601] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:47,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:47,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-11-17 07:57:47,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232083884] [2024-11-17 07:57:47,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:47,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-17 07:57:47,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:47,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-17 07:57:47,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-17 07:57:48,110 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 74 [2024-11-17 07:57:48,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 134 transitions, 911 flow. Second operand has 19 states, 19 states have (on average 27.263157894736842) internal successors, (518), 19 states have internal predecessors, (518), 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) [2024-11-17 07:57:48,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:48,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 74 [2024-11-17 07:57:48,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:52,061 INFO L124 PetriNetUnfolderBase]: 21341/37570 cut-off events. [2024-11-17 07:57:52,062 INFO L125 PetriNetUnfolderBase]: For 42068/42958 co-relation queries the response was YES. [2024-11-17 07:57:52,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95695 conditions, 37570 events. 21341/37570 cut-off events. For 42068/42958 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 315698 event pairs, 3410 based on Foata normal form. 476/35160 useless extension candidates. Maximal degree in co-relation 95626. Up to 12342 conditions per place. [2024-11-17 07:57:52,308 INFO L140 encePairwiseOnDemand]: 58/74 looper letters, 171 selfloop transitions, 45 changer transitions 76/313 dead transitions. [2024-11-17 07:57:52,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 313 transitions, 2245 flow [2024-11-17 07:57:52,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-17 07:57:52,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-17 07:57:52,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 655 transitions. [2024-11-17 07:57:52,310 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46586059743954483 [2024-11-17 07:57:52,310 INFO L175 Difference]: Start difference. First operand has 159 places, 134 transitions, 911 flow. Second operand 19 states and 655 transitions. [2024-11-17 07:57:52,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 313 transitions, 2245 flow [2024-11-17 07:57:52,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 313 transitions, 2122 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-11-17 07:57:52,426 INFO L231 Difference]: Finished difference. Result has 166 places, 119 transitions, 789 flow [2024-11-17 07:57:52,426 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=784, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=789, PETRI_PLACES=166, PETRI_TRANSITIONS=119} [2024-11-17 07:57:52,426 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 98 predicate places. [2024-11-17 07:57:52,426 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 119 transitions, 789 flow [2024-11-17 07:57:52,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 27.263157894736842) internal successors, (518), 19 states have internal predecessors, (518), 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) [2024-11-17 07:57:52,427 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:52,427 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:52,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-17 07:57:52,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:52,627 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-17 07:57:52,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:52,628 INFO L85 PathProgramCache]: Analyzing trace with hash 670896320, now seen corresponding path program 1 times [2024-11-17 07:57:52,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:52,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506966262] [2024-11-17 07:57:52,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:52,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:52,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:52,707 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-17 07:57:52,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:52,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506966262] [2024-11-17 07:57:52,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506966262] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:52,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186746679] [2024-11-17 07:57:52,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:52,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:52,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:52,710 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) [2024-11-17 07:57:52,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-17 07:57:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:52,795 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:57:52,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:52,827 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-17 07:57:52,827 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:52,866 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-17 07:57:52,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186746679] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:52,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:52,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-17 07:57:52,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991276124] [2024-11-17 07:57:52,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:52,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 07:57:52,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:52,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 07:57:52,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-17 07:57:52,901 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 74 [2024-11-17 07:57:52,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 119 transitions, 789 flow. Second operand has 12 states, 12 states have (on average 35.166666666666664) internal successors, (422), 12 states have internal predecessors, (422), 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) [2024-11-17 07:57:52,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:52,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 74 [2024-11-17 07:57:52,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:57:57,989 INFO L124 PetriNetUnfolderBase]: 26163/49361 cut-off events. [2024-11-17 07:57:57,989 INFO L125 PetriNetUnfolderBase]: For 67722/68926 co-relation queries the response was YES. [2024-11-17 07:57:58,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131015 conditions, 49361 events. 26163/49361 cut-off events. For 67722/68926 co-relation queries the response was YES. Maximal size of possible extension queue 1019. Compared 459220 event pairs, 5700 based on Foata normal form. 1646/49633 useless extension candidates. Maximal degree in co-relation 130950. Up to 15298 conditions per place. [2024-11-17 07:57:58,380 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 382 selfloop transitions, 13 changer transitions 0/428 dead transitions. [2024-11-17 07:57:58,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 428 transitions, 3717 flow [2024-11-17 07:57:58,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 07:57:58,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 07:57:58,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 518 transitions. [2024-11-17 07:57:58,382 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-11-17 07:57:58,382 INFO L175 Difference]: Start difference. First operand has 166 places, 119 transitions, 789 flow. Second operand 10 states and 518 transitions. [2024-11-17 07:57:58,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 428 transitions, 3717 flow [2024-11-17 07:57:58,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 428 transitions, 3382 flow, removed 12 selfloop flow, removed 15 redundant places. [2024-11-17 07:57:58,497 INFO L231 Difference]: Finished difference. Result has 149 places, 128 transitions, 724 flow [2024-11-17 07:57:58,497 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=724, PETRI_PLACES=149, PETRI_TRANSITIONS=128} [2024-11-17 07:57:58,498 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 81 predicate places. [2024-11-17 07:57:58,498 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 128 transitions, 724 flow [2024-11-17 07:57:58,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 35.166666666666664) internal successors, (422), 12 states have internal predecessors, (422), 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) [2024-11-17 07:57:58,498 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:57:58,499 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:57:58,511 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-17 07:57:58,700 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,SelfDestructingSolverStorable16 [2024-11-17 07:57:58,700 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-17 07:57:58,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:57:58,701 INFO L85 PathProgramCache]: Analyzing trace with hash 447697265, now seen corresponding path program 1 times [2024-11-17 07:57:58,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:57:58,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458545043] [2024-11-17 07:57:58,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:58,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:57:58,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:58,781 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-17 07:57:58,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:57:58,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458545043] [2024-11-17 07:57:58,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458545043] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:57:58,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239426166] [2024-11-17 07:57:58,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:57:58,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:57:58,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:57:58,784 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) [2024-11-17 07:57:58,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-17 07:57:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:57:58,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:57:58,877 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:57:58,902 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-17 07:57:58,903 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:57:58,936 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-17 07:57:58,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239426166] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:57:58,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:57:58,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-17 07:57:58,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842651024] [2024-11-17 07:57:58,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:57:58,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 07:57:58,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:57:58,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 07:57:58,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-17 07:57:58,962 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 74 [2024-11-17 07:57:58,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 128 transitions, 724 flow. Second operand has 12 states, 12 states have (on average 35.166666666666664) internal successors, (422), 12 states have internal predecessors, (422), 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) [2024-11-17 07:57:58,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:57:58,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 74 [2024-11-17 07:57:58,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:58:10,255 INFO L124 PetriNetUnfolderBase]: 60057/105015 cut-off events. [2024-11-17 07:58:10,256 INFO L125 PetriNetUnfolderBase]: For 153016/155012 co-relation queries the response was YES. [2024-11-17 07:58:10,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281026 conditions, 105015 events. 60057/105015 cut-off events. For 153016/155012 co-relation queries the response was YES. Maximal size of possible extension queue 1604. Compared 977504 event pairs, 12742 based on Foata normal form. 2724/105699 useless extension candidates. Maximal degree in co-relation 280970. Up to 29816 conditions per place. [2024-11-17 07:58:11,092 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 311 selfloop transitions, 19 changer transitions 0/361 dead transitions. [2024-11-17 07:58:11,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 361 transitions, 2552 flow [2024-11-17 07:58:11,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 07:58:11,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 07:58:11,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 493 transitions. [2024-11-17 07:58:11,094 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6662162162162162 [2024-11-17 07:58:11,094 INFO L175 Difference]: Start difference. First operand has 149 places, 128 transitions, 724 flow. Second operand 10 states and 493 transitions. [2024-11-17 07:58:11,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 361 transitions, 2552 flow [2024-11-17 07:58:11,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 361 transitions, 2453 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-11-17 07:58:11,418 INFO L231 Difference]: Finished difference. Result has 159 places, 137 transitions, 805 flow [2024-11-17 07:58:11,418 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=805, PETRI_PLACES=159, PETRI_TRANSITIONS=137} [2024-11-17 07:58:11,418 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 91 predicate places. [2024-11-17 07:58:11,419 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 137 transitions, 805 flow [2024-11-17 07:58:11,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 35.166666666666664) internal successors, (422), 12 states have internal predecessors, (422), 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) [2024-11-17 07:58:11,419 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:58:11,419 INFO L204 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:58:11,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-17 07:58:11,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-17 07:58:11,620 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-17 07:58:11,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:58:11,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1918220672, now seen corresponding path program 1 times [2024-11-17 07:58:11,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:58:11,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997255932] [2024-11-17 07:58:11,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:11,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:58:11,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:11,702 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-17 07:58:11,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:58:11,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997255932] [2024-11-17 07:58:11,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997255932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:58:11,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:58:11,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:58:11,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195044961] [2024-11-17 07:58:11,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:58:11,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:58:11,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:58:11,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:58:11,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:58:11,724 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 74 [2024-11-17 07:58:11,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 137 transitions, 805 flow. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:58:11,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:58:11,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 74 [2024-11-17 07:58:11,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand